hedgewars/uFloat.pas
author unc0rr
Thu, 18 Apr 2013 17:37:50 +0400
changeset 8919 67214340fa53
parent 8917 263f2a8475bc
child 8921 e5db2a42e7e8
permissions -rw-r--r--
lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue #613.
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 *)
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{$INCLUDE "options.inc"}
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unit uFloat;
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(*
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 * This unit provides a custom data type, hwFloat.
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 *
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 * hwFloat represents a floating point number - the value and operations
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 * of this numbers are independent from the hardware architecture
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 * the game runs on.
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 *
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 * This is important for calculations that affect the course of the game
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 * and would lead to different results if based on a hardware dependent
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 * data type.
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 *
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 * Note: Not all comparisons are implemented.
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 *
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 * Note: Below you'll find a list of hwFloat constants:
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 *       E.g. _1 is an hwFloat with value 1.0, and -_0_9 is -0.9
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 *       Use and extend the list if needed, rather than using int2hwFloat()
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 *       with integer constants.
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 *)
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interface
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{$IFDEF FPC}
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{$IFDEF ENDIAN_LITTLE}
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type hwFloat = record
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    isNegative: boolean;
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    case byte of
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        0: (Frac, Round: Longword);
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        1: (QWordValue : QWord);
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        end;
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{$ELSE}
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type hwFloat = record
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    isNegative: boolean;
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    case byte of
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    0: (Round, Frac: Longword);
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    1: (QWordValue : QWord);
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    end;
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{$ENDIF}
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// Returns an hwFloat that represents the value of integer parameter i
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function int2hwFloat (const i: LongInt) : hwFloat; inline;
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function hwFloat2Float (const i: hwFloat) : extended; inline;
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// The implemented operators
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operator = (const z1, z2: hwFloat) z : boolean; inline;
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operator + (const z1, z2: hwFloat) z : hwFloat; inline;
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operator - (const z1, z2: hwFloat) z : hwFloat; inline;
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operator - (const z1: hwFloat) z : hwFloat; inline;
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operator * (const z1, z2: hwFloat) z : hwFloat; inline;
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operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
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operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat; inline;
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operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
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operator < (const z1, z2: hwFloat) b : boolean; inline;
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operator > (const z1, z2: hwFloat) b : boolean; inline;
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// Various functions for hwFloat (some are inlined in the resulting code for better performance)
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function cstr(const z: hwFloat): shortstring; // Returns a shortstring representations of the hwFloat.
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function hwRound(const t: hwFloat): LongInt; inline; // Does NOT really round but returns the integer representation of the hwFloat without fractional digits. (-_0_9 -> -0, _1_5 -> _1)
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function hwAbs(const t: hwFloat): hwFloat; inline; // Returns the value of t with positive sign.
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function hwSqr(const t: hwFloat): hwFloat; inline; // Returns the square value of parameter t.
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function hwPow(const t: hwFloat; p: LongWord): hwFloat; inline; // Returns the power of the value
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function hwSqrt1(const t: hwFloat): hwFloat; inline; // Returns the the positive square root of parameter t.
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function hwSqrt(const x: hwFloat): hwFloat; inline; // Returns the the positive square root of parameter t.
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function Distance(const dx, dy: hwFloat): hwFloat; // Returns the distance between two points in 2-dimensional space, of which the parameters are the horizontal and vertical distance.
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function DistanceI(const dx, dy: LongInt): hwFloat; // Same as above for integer parameters.
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function AngleSin(const Angle: Longword): hwFloat;
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function AngleCos(const Angle: Longword): hwFloat;
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function vector2Angle(const x, y: hwFloat): LongInt;
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function SignAs(const num, signum: hwFloat): hwFloat; inline; // Returns an hwFloat with the value of parameter num and the sign of signum.
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function hwSign(r: hwFloat): LongInt; inline; // Returns an integer with value 1 and sign of parameter r.
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function hwSignf(r: real): LongInt; inline; // Returns an integer with value 1 and sign of parameter r.
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function isZero(const z: hwFloat): boolean; inline;
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{$IFDEF FPC}
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{$J-}
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{$ENDIF}
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{$WARNINGS OFF}
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// some hwFloat constants
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const  _1div1024: hwFloat = (isNegative: false; QWordValue:     4194304);
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      _1div10000: hwFloat = (isNegative: false; QWordValue:      429496);
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      _1div50000: hwFloat = (isNegative: false; QWordValue:       85899);
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     _1div100000: hwFloat = (isNegative: false; QWordValue:       42950);
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          _1div3: hwFloat = (isNegative: false; QWordValue:  1431655766);
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            hwPi: hwFloat = (isNegative: false; QWordValue: 13493037704);
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       _0_000004: hwFloat = (isNegative: false; QWordValue:       17179);
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       _0_000064: hwFloat = (isNegative: false; QWordValue:      274878);
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         _0_0002: hwFloat = (isNegative: false; QWordValue:      858993);
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         _0_0005: hwFloat = (isNegative: false; QWordValue:     2147484);
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          _0_001: hwFloat = (isNegative: false; QWordValue:     4294967);
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          _0_003: hwFloat = (isNegative: false; QWordValue:    12884902);
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         _0_0032: hwFloat = (isNegative: false; QWordValue:    13743895);
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          _0_004: hwFloat = (isNegative: false; QWordValue:    17179869);
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          _0_005: hwFloat = (isNegative: false; QWordValue:    21474836);
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          _0_008: hwFloat = (isNegative: false; QWordValue:    34359738);
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           _0_01: hwFloat = (isNegative: false; QWordValue:    42949673);
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         _0_0128: hwFloat = (isNegative: false; QWordValue:    54975581);
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           _0_02: hwFloat = (isNegative: false; QWordValue:    85899345);
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           _0_03: hwFloat = (isNegative: false; QWordValue:   128849018);
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           _0_07: hwFloat = (isNegative: false; QWordValue:   300647710);
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           _0_08: hwFloat = (isNegative: false; QWordValue:   343597383);
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            _0_1: hwFloat = (isNegative: false; QWordValue:   429496730);
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           _0_15: hwFloat = (isNegative: false; QWordValue:   644245094);
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            _0_2: hwFloat = (isNegative: false; QWordValue:   858993459);
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           _0_25: hwFloat = (isNegative: false; QWordValue:  1073741824);
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            _0_3: hwFloat = (isNegative: false; QWordValue:  1288490189);
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           _0_35: hwFloat = (isNegative: false; QWordValue:  1503238553);
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          _0_375: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3 div 8);
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           _0_39: hwFloat = (isNegative: false; QWordValue:  1675037245);
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            _0_4: hwFloat = (isNegative: false; QWordValue:  1717986918);
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           _0_45: hwFloat = (isNegative: false; QWordValue:  1932735283);
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            _0_5: hwFloat = (isNegative: false; QWordValue:  2147483648);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   139
           _0_55: hwFloat = (isNegative: false; QWordValue:  2362232012);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   140
            _0_6: hwFloat = (isNegative: false; QWordValue:  2576980377);
3583
13818670ad9e rope: tiny optimisation
sheepluva
parents: 3428
diff changeset
   141
           _0_64: hwFloat = (isNegative: false; QWordValue:  2748779064);
358
236bbd12d4d9 - New Land Generator
unc0rr
parents: 357
diff changeset
   142
            _0_7: hwFloat = (isNegative: false; QWordValue:  3006477107);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   143
            _0_8: hwFloat = (isNegative: false; QWordValue:  3435973837);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   144
           _0_84: hwFloat = (isNegative: false; QWordValue:  3607772528);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   145
           _0_87: hwFloat = (isNegative: false; QWordValue:  3736621547);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   146
            _0_9: hwFloat = (isNegative: false; QWordValue:  3865470566);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   147
           _0_93: hwFloat = (isNegative: false; QWordValue:  3994319585);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   148
           _0_96: hwFloat = (isNegative: false; QWordValue:  4123168604);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   149
          _0_995: hwFloat = (isNegative: false; QWordValue:  4273492459);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   150
          _0_999: hwFloat = (isNegative: false; QWordValue:  4290672328);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   151
              _0: hwFloat = (isNegative: false; QWordValue:           0);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   152
              _1: hwFloat = (isNegative: false; QWordValue:  4294967296);
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7638
diff changeset
   153
            _1_2: hwFloat = (isNegative: false; QWordValue:  1288490189*4);
513
69e06d710d46 Moving hedgehog could get another hedgehog moving forward
unc0rr
parents: 498
diff changeset
   154
            _1_5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3 div 2);
7593
b966e2d833f2 An attempt to run main rope code only every 8th tick:
unc0rr
parents: 7515
diff changeset
   155
            _1_6: hwFloat = (isNegative: false; QWordValue:  4294967296 * 8 div 5);
3584
7c05f2e0a8b5 rope: another small optimization
sheepluva
parents: 3583
diff changeset
   156
            _1_9: hwFloat = (isNegative: false; QWordValue:  8160437862);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   157
              _2: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2);
7593
b966e2d833f2 An attempt to run main rope code only every 8th tick:
unc0rr
parents: 7515
diff changeset
   158
            _2_4: hwFloat = (isNegative: false; QWordValue:  4294967296 * 12 div 5);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   159
              _3: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3);
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7638
diff changeset
   160
            _3_2: hwFloat = (isNegative: false; QWordValue:  3435973837*4);
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   161
             _PI: hwFloat = (isNegative: false; QWordValue: 13493037704);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   162
              _4: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4);
6498
5678806aafca Some tiny optimizations
unc0rr
parents: 6443
diff changeset
   163
            _4_5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 9 div 2);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   164
              _5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 5);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   165
              _6: hwFloat = (isNegative: false; QWordValue:  4294967296 * 6);
7594
5f03595335e6 fromdos + fix end of turn velocity
nemo
parents: 7593
diff changeset
   166
            _6_4: hwFloat = (isNegative: false; QWordValue:  3435973837 * 8);
7593
b966e2d833f2 An attempt to run main rope code only every 8th tick:
unc0rr
parents: 7515
diff changeset
   167
              _7: hwFloat = (isNegative: false; QWordValue:  4294967296 * 7);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   168
             _10: hwFloat = (isNegative: false; QWordValue:  4294967296 * 10);
3422
41ae3c48faa0 * some changes/cleanups to portal, still much to do :/ * reverted nemo's temporary loop fix * notice: small loops possible again, so take care :P, bigger onces should be interrupted
sheepluva
parents: 3407
diff changeset
   169
             _12: hwFloat = (isNegative: false; QWordValue:  4294967296 * 12);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   170
             _16: hwFloat = (isNegative: false; QWordValue:  4294967296 * 16);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   171
             _19: hwFloat = (isNegative: false; QWordValue:  4294967296 * 19);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   172
             _20: hwFloat = (isNegative: false; QWordValue:  4294967296 * 20);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   173
             _25: hwFloat = (isNegative: false; QWordValue:  4294967296 * 25);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   174
             _30: hwFloat = (isNegative: false; QWordValue:  4294967296 * 30);
2955
fb361d137524 Tweak to joke in french locale (everyone always fixes the spelling) updated explosive frames from Palewolf, increase explosive fall damage from 30 to 40
nemo
parents: 2948
diff changeset
   175
             _40: hwFloat = (isNegative: false; QWordValue:  4294967296 * 40);
7594
5f03595335e6 fromdos + fix end of turn velocity
nemo
parents: 7593
diff changeset
   176
             _41: hwFloat = (isNegative: false; QWordValue:  4294967296 * 41);
7593
b966e2d833f2 An attempt to run main rope code only every 8th tick:
unc0rr
parents: 7515
diff changeset
   177
             _49: hwFloat = (isNegative: false; QWordValue:  4294967296 * 49);
3036
c6ba6531cb4b Make barrels a little more likely to blow up. 25% more damage in fall
nemo
parents: 2955
diff changeset
   178
             _50: hwFloat = (isNegative: false; QWordValue:  4294967296 * 50);
2933
02af54eb7e1e Experiment with barrels. Add rolling.
nemo
parents: 2905
diff changeset
   179
             _70: hwFloat = (isNegative: false; QWordValue:  4294967296 * 70);
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   180
             _90: hwFloat = (isNegative: false; QWordValue:  4294967296 * 90);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   181
            _128: hwFloat = (isNegative: false; QWordValue:  4294967296 * 128);
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   182
            _180: hwFloat = (isNegative: false; QWordValue:  4294967296 * 180);
5319
51d8e4747876 bounce. tweak of values, remove friction modifier, move to weapon, to match timer behaviour
nemo
parents: 5192
diff changeset
   183
            _250: hwFloat = (isNegative: false; QWordValue:  4294967296 * 250);
1915
c357f5b55320 patch by nemo:
unc0rr
parents: 1753
diff changeset
   184
            _256: hwFloat = (isNegative: false; QWordValue:  4294967296 * 256);
1124
1636a3c7c061 - Airplane is higher
unc0rr
parents: 1066
diff changeset
   185
            _300: hwFloat = (isNegative: false; QWordValue:  4294967296 * 300);
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   186
            _360: hwFloat = (isNegative: false; QWordValue:  4294967296 * 360);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   187
            _450: hwFloat = (isNegative: false; QWordValue:  4294967296 * 450);
5319
51d8e4747876 bounce. tweak of values, remove friction modifier, move to weapon, to match timer behaviour
nemo
parents: 5192
diff changeset
   188
           _1000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1000);
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   189
           _1024: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1024);
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   190
           _2048: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2048);
1753
2ccba26f1aa4 Apply nemo's world resize patch
unc0rr
parents: 1652
diff changeset
   191
           _4096: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4096);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   192
          _10000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 10000);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   193
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   194
         cLittle: hwFloat = (isNegative: false; QWordValue:           1);
967
8be3938d73c2 Don't let jumping hedgehog to move others
unc0rr
parents: 953
diff changeset
   195
         cHHKick: hwFloat = (isNegative: false; QWordValue:    42949673);  // _0_01
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   196
{$WARNINGS ON}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   197
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   198
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   199
{$IFNDEF FPC}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   200
type hwFloat = Extended;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   201
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   202
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   203
implementation
4415
941251bad467 SinTable.inc -> uSinTable.pas
unc0rr
parents: 4374
diff changeset
   204
uses uSinTable;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   205
3599
715a43602da8 sheepluva's inline patch, fix a crash in overlay
koda
parents: 3591
diff changeset
   206
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   207
{$IFDEF FPC}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   208
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   209
function int2hwFloat (const i: LongInt) : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   210
begin
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   211
int2hwFloat.isNegative:= i < 0;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   212
int2hwFloat.Round:= abs(i);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   213
int2hwFloat.Frac:= 0
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   214
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   215
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   216
function hwFloat2Float (const i: hwFloat) : extended; inline;
5151
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   217
begin
7614
3ae60c8a15f2 Starting to rewrite uFloat routines to avoid QWordValue - in the interests of JS which may get uint64/int64 in the spec in the future but does not have it now.
nemo
parents: 7594
diff changeset
   218
hwFloat2Float:= i.Frac / $100000000 + i.Round;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   219
if i.isNegative then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   220
    hwFloat2Float:= -hwFloat2Float;
5151
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   221
end;
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   222
6415
af2047bb4f70 GSoC 2011: Android port - merged mainstream
koda
parents: 6328
diff changeset
   223
operator = (const z1, z2: hwFloat) z : boolean; inline;
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   224
begin
5665
8805f3167058 fixed = operator in uFloat
Xeli
parents: 5599
diff changeset
   225
    z:= (z1.isNegative = z2.isNegative) and (z1.QWordValue = z2.QWordValue);
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   226
end;
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   227
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   228
operator + (const z1, z2: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   229
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   230
if z1.isNegative = z2.isNegative then
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   231
    begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   232
    z.isNegative:= z1.isNegative;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   233
    z.QWordValue:= z1.QWordValue + z2.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   234
    end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   235
else
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   236
    if z1.QWordValue > z2.QWordValue then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   237
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   238
        z.isNegative:= z1.isNegative;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   239
        z.QWordValue:= z1.QWordValue - z2.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   240
        end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   241
    else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   242
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   243
        z.isNegative:= z2.isNegative;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   244
        z.QWordValue:= z2.QWordValue - z1.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   245
        end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   246
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   247
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   248
operator - (const z1, z2: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   249
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   250
if z1.isNegative = z2.isNegative then
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   251
    if z1.QWordValue > z2.QWordValue then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   252
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   253
        z.isNegative:= z1.isNegative;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   254
        z.QWordValue:= z1.QWordValue - z2.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   255
        end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   256
    else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   257
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   258
        z.isNegative:= not z2.isNegative;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   259
        z.QWordValue:= z2.QWordValue - z1.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   260
        end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   261
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   262
    begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   263
    z.isNegative:= z1.isNegative;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   264
    z.QWordValue:= z1.QWordValue + z2.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   265
    end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   266
end;
7623
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   267
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   268
function isZero(const z: hwFloat): boolean; inline; 
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   269
begin
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   270
isZero := z.QWordValue = 0;
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   271
end;
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   272
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   273
operator < (const z1, z2: hwFloat) b : boolean; inline;
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   274
begin
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   275
if z1.isNegative xor z2.isNegative then
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   276
    b:= z1.isNegative
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   277
else
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   278
    if z1.QWordValue = z2.QWordValue then
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   279
        b:= false
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   280
    else
8915
36e1574e989d Trivial optimization. Wonder if compiler was smart enough about it.
unc0rr
parents: 8905
diff changeset
   281
        b:= (z2.QWordValue < z1.QWordValue) = z1.isNegative
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   282
end;
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   283
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   284
operator > (const z1, z2: hwFloat) b : boolean; inline;
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   285
begin
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   286
if z1.isNegative xor z2.isNegative then
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   287
    b:= z2.isNegative
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   288
else
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   289
    if z1.QWordValue = z2.QWordValue then
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   290
        b:= false
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   291
    else
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   292
        b:= (z1.QWordValue > z2.QWordValue) <> z2.isNegative
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   293
end;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   294
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   295
operator - (const z1: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   296
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   297
z:= z1;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   298
z.isNegative:= not z.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   299
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   300
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   301
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   302
operator * (const z1, z2: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   303
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   304
z.isNegative:= z1.isNegative xor z2.isNegative;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   305
z.QWordValue:= QWord(z1.Round) * z2.Frac + QWord(z1.Frac) * z2.Round + ((QWord(z1.Frac) * z2.Frac) shr 32);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   306
z.Round:= z.Round + QWord(z1.Round) * z2.Round;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   307
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   308
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   309
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   310
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   311
z.isNegative:= z1.isNegative xor (z2 < 0);
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   312
z.QWordValue:= z1.QWordValue * abs(z2)
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   313
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   314
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   315
operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat; inline;
8919
67214340fa53 lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue 613.
unc0rr
parents: 8917
diff changeset
   316
var t: QWord;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   317
begin
8917
263f2a8475bc why would we ever want to divide by 0?
nemo
parents: 8916
diff changeset
   318
if z2.QWordValue = 0 then inc(z2.QWordValue);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   319
z.isNegative:= z1.isNegative xor z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   320
z.Round:= z1.QWordValue div z2.QWordValue;
8919
67214340fa53 lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue 613.
unc0rr
parents: 8917
diff changeset
   321
t:= z1.QWordValue - z2.QWordValue * z.Round;
8916
71485c03a507 hwFloat division is ~1.6 times faster now
unc0rr
parents: 8915
diff changeset
   322
z.Frac:= 0;
71485c03a507 hwFloat division is ~1.6 times faster now
unc0rr
parents: 8915
diff changeset
   323
8919
67214340fa53 lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue 613.
unc0rr
parents: 8917
diff changeset
   324
if t <> 0 then
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   325
    begin
8919
67214340fa53 lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue 613.
unc0rr
parents: 8917
diff changeset
   326
    while ((t and $FF00000000000000) = 0) and ((z2.QWordValue and $FF00000000000000) = 0) do
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   327
        begin
8919
67214340fa53 lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue 613.
unc0rr
parents: 8917
diff changeset
   328
        t:= t shl 8;
8916
71485c03a507 hwFloat division is ~1.6 times faster now
unc0rr
parents: 8915
diff changeset
   329
        z2.QWordValue:= z2.QWordValue shl 8
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   330
        end;
8916
71485c03a507 hwFloat division is ~1.6 times faster now
unc0rr
parents: 8915
diff changeset
   331
        
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   332
    if z2.Round > 0 then
8919
67214340fa53 lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue 613.
unc0rr
parents: 8917
diff changeset
   333
        inc(z.QWordValue, t div z2.Round);
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   334
    end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   335
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   336
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   337
operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   338
begin
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   339
z.isNegative:= z1.isNegative xor (z2 < 0);
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   340
z.QWordValue:= z1.QWordValue div abs(z2)
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   341
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   342
2905
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   343
function cstr(const z: hwFloat): shortstring;
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   344
var tmpstr: shortstring;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   345
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   346
str(z.Round, cstr);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   347
if z.Frac <> 0 then
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   348
    begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   349
    str(z.Frac / $100000000, tmpstr);
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   350
    delete(tmpstr, 1, 2);
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   351
    cstr:= cstr + '.' + copy(tmpstr, 1, 10)
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   352
    end;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   353
if z.isNegative then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   354
    cstr:= '-' + cstr
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   355
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   356
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   357
function hwRound(const t: hwFloat): LongInt;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   358
begin
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   359
if t.isNegative then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   360
    hwRound:= -(t.Round and $7FFFFFFF)
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   361
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   362
    hwRound:= t.Round and $7FFFFFFF
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   363
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   364
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   365
function hwAbs(const t: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   366
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   367
hwAbs:= t;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   368
hwAbs.isNegative:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   369
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   370
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   371
function hwSqr(const t: hwFloat): hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   372
begin
1433
4af291d5d79c Repair flame dependancy on wind
unc0rr
parents: 1124
diff changeset
   373
hwSqr.isNegative:= false;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   374
hwSqr.QWordValue:= ((QWord(t.Round) * t.Round) shl 32) + QWord(t.Round) * t.Frac * 2 + ((QWord(t.Frac) * t.Frac) shr 32);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   375
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   376
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   377
function hwPow(const t: hwFloat;p: LongWord): hwFloat;
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   378
begin
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   379
hwPow:= t;
7515
nemo
parents: 7043
diff changeset
   380
if p mod 2 = 0 then hwPow.isNegative:= false;
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   381
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   382
while p > 0 do
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   383
    begin
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   384
    hwPow.QWordValue:= QWord(hwPow.Round) * t.Frac + QWord(hwPow.Frac) * t.Round + ((QWord(hwPow.Frac) * t.Frac) shr 32);
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   385
    dec(p)
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   386
    end
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   387
end;
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   388
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   389
function hwSqrt1(const t: hwFloat): hwFloat;
7688
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   390
const pwr = 8; // even value, feel free to adjust
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   391
      rThreshold = 1 shl (pwr + 32);
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   392
      lThreshold = 1 shl (pwr div 2 + 32);
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   393
var l, r: QWord;
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   394
    c: hwFloat;
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   395
begin
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   396
hwSqrt1.isNegative:= false;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   397
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   398
if t.Round = 0 then
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   399
    begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   400
    l:= t.QWordValue;
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   401
    r:= $100000000
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   402
    end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   403
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   404
    begin
7688
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   405
    if t.QWordValue > $FFFFFFFFFFFF then // t.Round > 65535.9999
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   406
        begin
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   407
        l:= $10000000000; // 256
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   408
        r:= $FFFFFFFFFFFF; // 65535.9999
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   409
        end else
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   410
        if t.QWordValue >= rThreshold then
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   411
            begin
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   412
            l:= lThreshold;
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   413
            r:= $10000000000; // 256
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   414
            end else
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   415
            begin
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   416
            l:= $100000000;
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   417
            r:= lThreshold;
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   418
            end;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   419
    end;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   420
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   421
repeat
7688
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   422
    c.QWordValue:= (l + r) shr 1;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   423
    if hwSqr(c).QWordValue > t.QWordValue then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   424
        r:= c.QWordValue
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   425
    else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   426
        l:= c.QWordValue
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   427
until r - l <= 1;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   428
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   429
hwSqrt1.QWordValue:= l
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   430
end;
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   431
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   432
function hwSqrt(const x: hwFloat): hwFloat;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   433
var r, t, s, q: QWord;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   434
    i: integer;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   435
begin
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   436
hwSqrt.isNegative:= false;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   437
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   438
t:= $4000000000000000;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   439
r:= 0;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   440
q:= x.QWordValue;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   441
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   442
for i:= 0 to 31 do
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   443
    begin
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   444
    s:= r + t;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   445
    r:= r shr 1;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   446
    if s <= q then
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   447
        begin
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   448
        dec(q, s);
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   449
        inc(r, t);
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   450
        end;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   451
    t:= t shr 2;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   452
    end;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   453
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   454
hwSqrt.QWordValue:= r shl 16
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   455
end;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   456
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   457
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   458
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   459
function Distance(const dx, dy: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   460
begin
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   461
Distance:= hwSqrt(hwSqr(dx) + hwSqr(dy))
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   462
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   463
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   464
function DistanceI(const dx, dy: LongInt): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   465
begin
856
beecc5c5c71c - Fix braindead shotgun shot arithmetics
unc0rr
parents: 835
diff changeset
   466
DistanceI:= hwSqrt(int2hwFloat(sqr(dx) + sqr(dy)))
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   467
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   468
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   469
function SignAs(const num, signum: hwFloat): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   470
begin
856
beecc5c5c71c - Fix braindead shotgun shot arithmetics
unc0rr
parents: 835
diff changeset
   471
SignAs.QWordValue:= num.QWordValue;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   472
SignAs.isNegative:= signum.isNegative
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   473
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   474
4374
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   475
function hwSign(r: hwFloat): LongInt;
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   476
begin
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   477
// yes, we have negative zero for a reason
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   478
if r.isNegative then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   479
    hwSign:= -1
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   480
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   481
    hwSign:= 1
4374
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   482
end;
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   483
6879
f44042ba755c Simplify converter's life
unc0rr
parents: 6785
diff changeset
   484
function hwSignf(r: real): LongInt;
6775
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   485
begin
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   486
if r < 0 then
6879
f44042ba755c Simplify converter's life
unc0rr
parents: 6785
diff changeset
   487
    hwSignf:= -1
6775
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   488
else
6879
f44042ba755c Simplify converter's life
unc0rr
parents: 6785
diff changeset
   489
    hwSignf:= 1
6775
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   490
end;
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   491
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   492
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   493
function AngleSin(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   494
begin
3929
9a4bbc1f67a2 Inline most of uFloat (saves ~7.5% opcount on a test game), inline a few very short candidates in uMisc, comment out some unused functions in uMisc
nemo
parents: 3599
diff changeset
   495
//TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   496
AngleSin.isNegative:= false;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   497
if Angle < 1024 then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   498
    AngleSin.QWordValue:= SinTable[Angle]
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   499
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   500
    AngleSin.QWordValue:= SinTable[2048 - Angle]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   501
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   502
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   503
function AngleCos(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   504
begin
3929
9a4bbc1f67a2 Inline most of uFloat (saves ~7.5% opcount on a test game), inline a few very short candidates in uMisc, comment out some unused functions in uMisc
nemo
parents: 3599
diff changeset
   505
//TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true);
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   506
AngleCos.isNegative:= Angle > 1024;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   507
if Angle < 1024 then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   508
    AngleCos.QWordValue:= SinTable[1024 - Angle]
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   509
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   510
    AngleCos.QWordValue:= SinTable[Angle - 1024]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   511
end;
7714
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   512
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   513
function vector2Angle(const x, y: hwFloat): LongInt;
7715
8b653edac2a2 Shutup pas2c
unc0rr
parents: 7714
diff changeset
   514
var d, nf: hwFloat;
7714
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   515
    l, r, c, oc: Longword;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   516
    n: QWord;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   517
begin
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   518
    d:= _1 / Distance(x, y);
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   519
7715
8b653edac2a2 Shutup pas2c
unc0rr
parents: 7714
diff changeset
   520
    nf:= y * d;
8b653edac2a2 Shutup pas2c
unc0rr
parents: 7714
diff changeset
   521
    n:= nf.QWordValue;
7714
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   522
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   523
    l:= 0;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   524
    r:= 1024;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   525
    c:= 0;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   526
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   527
    repeat
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   528
        oc:= c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   529
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   530
        c:= (l + r) shr 1;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   531
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   532
        if n >= SinTable[c] then
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   533
            l:= c
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   534
        else
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   535
            r:= c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   536
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   537
    until (oc = c);
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   538
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   539
    if x.isNegative then c:= 2048 - c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   540
    if y.isNegative then c:= - c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   541
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   542
    vector2Angle:= c
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   543
end;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   544
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   545
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   546
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   547
end.