hedgewars/uFloat.pas
author nemo
Wed, 29 Jan 2014 09:17:25 -0500
changeset 10089 c6e5ed83fb83
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aaaand remove switch
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2014 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 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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{$IFDEF PAS2C}
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operator <> (const z1, z2: hwFloat) z : boolean; inline;
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{$ENDIF}
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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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{$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);
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           _0_55: hwFloat = (isNegative: false; QWordValue:  2362232012);
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            _0_6: hwFloat = (isNegative: false; QWordValue:  2576980377);
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           _0_64: hwFloat = (isNegative: false; QWordValue:  2748779064);
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236bbd12d4d9 - New Land Generator
unc0rr
parents: 357
diff changeset
   138
            _0_7: hwFloat = (isNegative: false; QWordValue:  3006477107);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   139
            _0_8: hwFloat = (isNegative: false; QWordValue:  3435973837);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   140
           _0_84: hwFloat = (isNegative: false; QWordValue:  3607772528);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   141
           _0_87: hwFloat = (isNegative: false; QWordValue:  3736621547);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   142
            _0_9: hwFloat = (isNegative: false; QWordValue:  3865470566);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   143
           _0_93: hwFloat = (isNegative: false; QWordValue:  3994319585);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   144
           _0_96: hwFloat = (isNegative: false; QWordValue:  4123168604);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   145
          _0_995: hwFloat = (isNegative: false; QWordValue:  4273492459);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   146
          _0_999: hwFloat = (isNegative: false; QWordValue:  4290672328);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   147
              _0: hwFloat = (isNegative: false; QWordValue:           0);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   148
              _1: hwFloat = (isNegative: false; QWordValue:  4294967296);
9968
7fb2f35bdd5b Fix two desync causes
unc0rr
parents: 9127
diff changeset
   149
            _1_2: hwFloat = (isNegative: false; QWordValue:  4294967296 * 6 div 5 + 1);
513
69e06d710d46 Moving hedgehog could get another hedgehog moving forward
unc0rr
parents: 498
diff changeset
   150
            _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
   151
            _1_6: hwFloat = (isNegative: false; QWordValue:  4294967296 * 8 div 5);
3584
7c05f2e0a8b5 rope: another small optimization
sheepluva
parents: 3583
diff changeset
   152
            _1_9: hwFloat = (isNegative: false; QWordValue:  8160437862);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   153
              _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
   154
            _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
   155
              _3: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3);
9970
88353250ad7d Fix these too
unc0rr
parents: 9968
diff changeset
   156
            _3_2: hwFloat = (isNegative: false; QWordValue:  4294967296 * 16 div 5);
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   157
             _PI: hwFloat = (isNegative: false; QWordValue: 13493037704);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   158
              _4: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4);
6498
5678806aafca Some tiny optimizations
unc0rr
parents: 6443
diff changeset
   159
            _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
   160
              _5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 5);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   161
              _6: hwFloat = (isNegative: false; QWordValue:  4294967296 * 6);
9970
88353250ad7d Fix these too
unc0rr
parents: 9968
diff changeset
   162
            _6_4: hwFloat = (isNegative: false; QWordValue:  4294967296 * 32 div 5);
7593
b966e2d833f2 An attempt to run main rope code only every 8th tick:
unc0rr
parents: 7515
diff changeset
   163
              _7: hwFloat = (isNegative: false; QWordValue:  4294967296 * 7);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   164
             _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
   165
             _12: hwFloat = (isNegative: false; QWordValue:  4294967296 * 12);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   166
             _16: hwFloat = (isNegative: false; QWordValue:  4294967296 * 16);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   167
             _19: hwFloat = (isNegative: false; QWordValue:  4294967296 * 19);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   168
             _20: hwFloat = (isNegative: false; QWordValue:  4294967296 * 20);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   169
             _25: hwFloat = (isNegative: false; QWordValue:  4294967296 * 25);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   170
             _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
   171
             _40: hwFloat = (isNegative: false; QWordValue:  4294967296 * 40);
7594
5f03595335e6 fromdos + fix end of turn velocity
nemo
parents: 7593
diff changeset
   172
             _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
   173
             _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
   174
             _50: hwFloat = (isNegative: false; QWordValue:  4294967296 * 50);
2933
02af54eb7e1e Experiment with barrels. Add rolling.
nemo
parents: 2905
diff changeset
   175
             _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
   176
             _90: hwFloat = (isNegative: false; QWordValue:  4294967296 * 90);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   177
            _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
   178
            _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
   179
            _250: hwFloat = (isNegative: false; QWordValue:  4294967296 * 250);
1915
c357f5b55320 patch by nemo:
unc0rr
parents: 1753
diff changeset
   180
            _256: hwFloat = (isNegative: false; QWordValue:  4294967296 * 256);
1124
1636a3c7c061 - Airplane is higher
unc0rr
parents: 1066
diff changeset
   181
            _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
   182
            _360: hwFloat = (isNegative: false; QWordValue:  4294967296 * 360);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   183
            _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
   184
           _1000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1000);
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   185
           _1024: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1024);
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   186
           _2048: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2048);
1753
2ccba26f1aa4 Apply nemo's world resize patch
unc0rr
parents: 1652
diff changeset
   187
           _4096: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4096);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   188
          _10000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 10000);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   189
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   190
         cLittle: hwFloat = (isNegative: false; QWordValue:           1);
967
8be3938d73c2 Don't let jumping hedgehog to move others
unc0rr
parents: 953
diff changeset
   191
         cHHKick: hwFloat = (isNegative: false; QWordValue:    42949673);  // _0_01
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   192
{$WARNINGS ON}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   193
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   194
implementation
4415
941251bad467 SinTable.inc -> uSinTable.pas
unc0rr
parents: 4374
diff changeset
   195
uses uSinTable;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   196
3599
715a43602da8 sheepluva's inline patch, fix a crash in overlay
koda
parents: 3591
diff changeset
   197
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   198
function int2hwFloat (const i: LongInt) : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   199
begin
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   200
int2hwFloat.isNegative:= i < 0;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   201
int2hwFloat.Round:= abs(i);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   202
int2hwFloat.Frac:= 0
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   203
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   204
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   205
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
   206
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
   207
hwFloat2Float:= i.Frac / $100000000 + i.Round;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   208
if i.isNegative then
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   209
    hwFloat2Float:= -hwFloat2Float;
5151
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   210
end;
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   211
6415
af2047bb4f70 GSoC 2011: Android port - merged mainstream
koda
parents: 6328
diff changeset
   212
operator = (const z1, z2: hwFloat) z : boolean; inline;
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   213
begin
5665
8805f3167058 fixed = operator in uFloat
Xeli
parents: 5599
diff changeset
   214
    z:= (z1.isNegative = z2.isNegative) and (z1.QWordValue = z2.QWordValue);
5599
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   215
end;
2e4b90f33a83 aiming fixed, inverted cursor on ammo menu, added equal and isZero function to uFloat, changed the way ammo menu opens, you must now click on the hog rather than anywhere on the screen
Xeli
parents: 5319
diff changeset
   216
7043
7c080e5ac8d0 Some work to make more units compile after conversion to c
unc0rr
parents: 7042
diff changeset
   217
{$IFDEF PAS2C}
7042
de20086a6bcc Support overloaded operators on (hwFloat op hwFloat) calls
unc0rr
parents: 6879
diff changeset
   218
operator <> (const z1, z2: hwFloat) z : boolean; inline;
de20086a6bcc Support overloaded operators on (hwFloat op hwFloat) calls
unc0rr
parents: 6879
diff changeset
   219
begin
de20086a6bcc Support overloaded operators on (hwFloat op hwFloat) calls
unc0rr
parents: 6879
diff changeset
   220
    z:= (z1.isNegative <> z2.isNegative) or (z1.QWordValue <> z2.QWordValue);
de20086a6bcc Support overloaded operators on (hwFloat op hwFloat) calls
unc0rr
parents: 6879
diff changeset
   221
end;
7043
7c080e5ac8d0 Some work to make more units compile after conversion to c
unc0rr
parents: 7042
diff changeset
   222
{$ENDIF}
7042
de20086a6bcc Support overloaded operators on (hwFloat op hwFloat) calls
unc0rr
parents: 6879
diff changeset
   223
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   224
operator + (const z1, z2: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   225
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   226
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
   227
    begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   228
    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
   229
    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
   230
    end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   231
else
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   232
    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
   233
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   234
        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
   235
        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
   236
        end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   237
    else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   238
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   239
        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
   240
        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
   241
        end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   242
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   243
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   244
operator - (const z1, z2: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   245
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   246
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
   247
    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
   248
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   249
        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
   250
        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
   251
        end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   252
    else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   253
        begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   254
        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
   255
        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
   256
        end
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   257
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   258
    begin
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   259
    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
   260
    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
   261
    end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   262
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
   263
8924
13ac59499066 update 0.9.19 with dev branch
koda
parents: 8921
diff changeset
   264
function isZero(const z: hwFloat): boolean; inline;
7623
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   265
begin
addc5b262617 isZero appears to be never used. Use it in a few obvious cases and add web variant.
nemo
parents: 7614
diff changeset
   266
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
   267
end;
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   268
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   269
operator < (const z1, z2: hwFloat) b : boolean; inline;
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nemo
parents: 7623
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   270
begin
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   271
if z1.isNegative xor z2.isNegative then
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nemo
parents: 7623
diff changeset
   272
    b:= z1.isNegative
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nemo
parents: 7623
diff changeset
   273
else
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   274
    if z1.QWordValue = z2.QWordValue then
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nemo
parents: 7623
diff changeset
   275
        b:= false
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nemo
parents: 7623
diff changeset
   276
    else
8915
36e1574e989d Trivial optimization. Wonder if compiler was smart enough about it.
unc0rr
parents: 8905
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   277
        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
   278
end;
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   279
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   280
operator > (const z1, z2: hwFloat) b : boolean; inline;
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nemo
parents: 7623
diff changeset
   281
begin
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   282
if z1.isNegative xor z2.isNegative then
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   283
    b:= z2.isNegative
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   284
else
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   285
    if z1.QWordValue = z2.QWordValue then
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   286
        b:= false
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   287
    else
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   288
        b:= (z1.QWordValue > z2.QWordValue) <> z2.isNegative
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   289
end;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   290
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   291
operator - (const z1: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   292
begin
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diff changeset
   293
    z:= z1;
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diff changeset
   294
    z.isNegative:= not z.isNegative
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   295
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   296
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   297
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   298
operator * (const z1, z2: hwFloat) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   299
begin
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   300
    z.isNegative:= z1.isNegative xor z2.isNegative;
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   301
    z.QWordValue:= QWord(z1.Round) * z2.Frac + QWord(z1.Frac) * z2.Round + ((QWord(z1.Frac) * z2.Frac) shr 32);
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diff changeset
   302
    z.Round:= z.Round + QWord(z1.Round) * z2.Round;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   303
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   304
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   305
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   306
begin
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diff changeset
   307
    z.isNegative:= z1.isNegative xor (z2 < 0);
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parents: 9998 9970
diff changeset
   308
    z.QWordValue:= z1.QWordValue * abs(z2)
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   309
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   310
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   311
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
   312
var t: QWord;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   313
begin
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parents: 9998 9970
diff changeset
   314
    z.isNegative:= z1.isNegative xor z2.isNegative;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   315
    z.Round:= z1.QWordValue div z2.QWordValue;
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   316
    t:= z1.QWordValue - z2.QWordValue * z.Round;
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parents: 9998 9970
diff changeset
   317
    z.Frac:= 0;
8916
71485c03a507 hwFloat division is ~1.6 times faster now
unc0rr
parents: 8915
diff changeset
   318
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4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   319
    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
   320
        begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   321
        while ((t and $FF00000000000000) = 0) and ((z2.QWordValue and $FF00000000000000) = 0) do
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   322
            begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   323
            t:= t shl 8;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   324
            z2.QWordValue:= z2.QWordValue shl 8
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   325
            end;
8921
e5db2a42e7e8 - Revert division hack nonsense
unc0rr
parents: 8919
diff changeset
   326
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   327
        if z2.Round > 0 then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   328
            inc(z.QWordValue, t div z2.Round);
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   329
        end
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   330
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   331
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   332
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
   333
begin
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4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   334
    z.isNegative:= z1.isNegative xor (z2 < 0);
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   335
    z.QWordValue:= z1.QWordValue div abs(z2)
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   336
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   337
2905
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   338
function cstr(const z: hwFloat): shortstring;
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   339
var tmpstr: shortstring;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   340
begin
10015
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parents: 9998 9970
diff changeset
   341
    str(z.Round, cstr);
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   342
    if z.Frac <> 0 then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   343
        begin
4feced261c68 partial merge of the webgl branch
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diff changeset
   344
        str(z.Frac / $100000000, tmpstr);
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   345
        delete(tmpstr, 1, 2);
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   346
        cstr:= cstr + '.' + copy(tmpstr, 1, 10)
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   347
        end;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   348
    if z.isNegative then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   349
        cstr:= '-' + cstr
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   350
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   351
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   352
function hwRound(const t: hwFloat): LongInt;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   353
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   354
    if t.isNegative then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   355
        hwRound:= -(t.Round and $7FFFFFFF)
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   356
    else
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   357
        hwRound:= t.Round and $7FFFFFFF
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   358
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   359
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   360
function hwAbs(const t: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   361
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   362
    hwAbs:= t;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   363
    hwAbs.isNegative:= false
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   364
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   365
7624
03d662ff9c41 A few more operators. Committing in case unc0rr wants to fiddle.
nemo
parents: 7623
diff changeset
   366
function hwSqr(const t: hwFloat): hwFloat; inline;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   367
begin
10015
4feced261c68 partial merge of the webgl branch
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parents: 9998 9970
diff changeset
   368
    hwSqr.isNegative:= false;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   369
    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
   370
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   371
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   372
function hwPow(const t: hwFloat;p: LongWord): hwFloat;
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   373
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   374
    hwPow:= t;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   375
    if p mod 2 = 0 then hwPow.isNegative:= false;
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   376
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   377
    while p > 0 do
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   378
        begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   379
        hwPow.QWordValue:= QWord(hwPow.Round) * t.Frac + QWord(hwPow.Frac) * t.Round + ((QWord(hwPow.Frac) * t.Frac) shr 32);
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   380
        dec(p)
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   381
        end
6785
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   382
end;
a8aa5984185f Allow RC plane to go through portals
nemo
parents: 6775
diff changeset
   383
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   384
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
   385
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
   386
      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
   387
      lThreshold = 1 shl (pwr div 2 + 32);
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   388
var l, r: QWord;
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   389
    c: hwFloat;
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   390
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   391
    hwSqrt1.isNegative:= false;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   392
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   393
    if t.Round = 0 then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   394
        begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   395
        l:= t.QWordValue;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   396
        r:= $100000000
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   397
        end
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   398
    else
7688
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   399
        begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   400
        if t.QWordValue > $FFFFFFFFFFFF then // t.Round > 65535.9999
7688
9daa06188551 New hwSqrt which is up to 8.7% more efficient than old one on synthetic tests
unc0rr
parents: 7663
diff changeset
   401
            begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   402
            l:= $10000000000; // 256
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   403
            r:= $FFFFFFFFFFFF; // 65535.9999
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   404
            end
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   405
        else
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   406
            if t.QWordValue >= rThreshold then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   407
                begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   408
                l:= lThreshold;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   409
                r:= $10000000000; // 256
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   410
                end
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   411
            else
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   412
                begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   413
                l:= $100000000;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   414
                r:= lThreshold;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   415
                end;
6580
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   416
    end;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   417
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   418
    repeat
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   419
        c.QWordValue:= (l + r) shr 1;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   420
        if hwSqr(c).QWordValue > t.QWordValue then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   421
            r:= c.QWordValue
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   422
        else
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   423
            l:= c.QWordValue
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   424
    until r - l <= 1;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   425
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   426
    hwSqrt1.QWordValue:= l
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   427
end;
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   428
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   429
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
   430
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
   431
    i: integer;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   432
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   433
    hwSqrt.isNegative:= false;
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   434
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   435
    t:= $4000000000000000;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   436
    r:= 0;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   437
    q:= x.QWordValue;
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   438
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   439
    for i:= 0 to 31 do
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   440
        begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   441
        s:= r + t;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   442
        r:= r shr 1;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   443
        if s <= q then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   444
            begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   445
            dec(q, s);
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   446
            inc(r, t);
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   447
            end;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   448
        t:= t shr 2;
8905
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   449
        end;
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   450
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   451
    hwSqrt.QWordValue:= r shl 16
8905
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
82b1400f4a08 New hwSqrt implementation which is 46/19 times faster than the old one!
unc0rr
parents: 8838
diff changeset
   455
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   456
function Distance(const dx, dy: hwFloat): hwFloat;
8921
e5db2a42e7e8 - Revert division hack nonsense
unc0rr
parents: 8919
diff changeset
   457
var r: QWord;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   458
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   459
    r:= dx.QWordValue or dy.QWordValue;
8921
e5db2a42e7e8 - Revert division hack nonsense
unc0rr
parents: 8919
diff changeset
   460
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   461
    if r < $10000 then
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   462
        begin
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   463
        Distance.QWordValue:= r;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   464
        Distance.isNegative:= false
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   465
        end
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   466
    else
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   467
        Distance:= hwSqrt(hwSqr(dx) + hwSqr(dy))
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   468
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   469
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   470
function DistanceI(const dx, dy: LongInt): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   471
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   472
    DistanceI:= hwSqrt(int2hwFloat(sqr(dx) + sqr(dy)))
498
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
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   475
function SignAs(const num, signum: hwFloat): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   476
begin
10015
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   477
    SignAs.QWordValue:= num.QWordValue;
4feced261c68 partial merge of the webgl branch
koda
parents: 9998 9970
diff changeset
   478
    SignAs.isNegative:= signum.isNegative
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   479
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   480
4374
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   481
function hwSign(r: hwFloat): LongInt;
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   482
begin
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   483
// 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
   484
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
   485
    hwSign:= -1
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   486
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   487
    hwSign:= 1
4374
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   488
end;
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   489
6879
f44042ba755c Simplify converter's life
unc0rr
parents: 6785
diff changeset
   490
function hwSignf(r: real): LongInt;
6775
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   491
begin
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   492
if r < 0 then
6879
f44042ba755c Simplify converter's life
unc0rr
parents: 6785
diff changeset
   493
    hwSignf:= -1
6775
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   494
else
6879
f44042ba755c Simplify converter's life
unc0rr
parents: 6785
diff changeset
   495
    hwSignf:= 1
6775
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   496
end;
22b5fb7217db Change rest of AI tests to floats, reenable snowball
nemo
parents: 6700
diff changeset
   497
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   498
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   499
function AngleSin(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   500
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
   501
//TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   502
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
   503
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
   504
    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
   505
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   506
    AngleSin.QWordValue:= SinTable[2048 - Angle]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   507
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   508
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   509
function AngleCos(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   510
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
   511
//TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true);
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   512
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
   513
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
   514
    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
   515
else
6155187bf599 A partial reformatting of the pascal code to have consistent syntax. Things that are still inconsistent.
lovelacer
parents: 6498
diff changeset
   516
    AngleCos.QWordValue:= SinTable[Angle - 1024]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   517
end;
7714
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   518
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   519
function vector2Angle(const x, y: hwFloat): LongInt;
7715
8b653edac2a2 Shutup pas2c
unc0rr
parents: 7714
diff changeset
   520
var d, nf: hwFloat;
7714
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   521
    l, r, c, oc: Longword;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   522
    n: QWord;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   523
begin
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   524
    d:= _1 / Distance(x, y);
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   525
7715
8b653edac2a2 Shutup pas2c
unc0rr
parents: 7714
diff changeset
   526
    nf:= y * d;
8b653edac2a2 Shutup pas2c
unc0rr
parents: 7714
diff changeset
   527
    n:= nf.QWordValue;
7714
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   528
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   529
    l:= 0;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   530
    r:= 1024;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   531
    c:= 0;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   532
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   533
    repeat
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   534
        oc:= c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   535
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   536
        c:= (l + r) shr 1;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   537
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   538
        if n >= SinTable[c] then
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   539
            l:= c
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   540
        else
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   541
            r:= c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   542
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   543
    until (oc = c);
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   544
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   545
    if x.isNegative then c:= 2048 - c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   546
    if y.isNegative then c:= - c;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   547
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   548
    vector2Angle:= c
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   549
end;
981001b84f0b vector2Angle function which converts vector to angle from -2048 to 2048
unc0rr
parents: 7688
diff changeset
   550
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   551
end.