hedgewars/uFloat.pas
author nemo
Sun, 02 Oct 2011 10:36:43 -0400
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parent 5843 8c5168e3194c
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child 6295 5b2b304a91ec
permissions -rw-r--r--
Basic test implementation of an ice flag. Allows for slick parts of terrain. Intended for ice gun, or "ice" mask on portions of land objects. In this test variant it is triggered on girders/objects/bridges of the snow/christmas theme, or on a map that uses blue as a mask colour. Probably needs sheepluva's slope detection to make slopes more slippery to climb.
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2011 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 : 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 hwSqrt(const t: 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 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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{$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_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_02: hwFloat = (isNegative: false; QWordValue:    85899345);
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           _0_03: hwFloat = (isNegative: false; QWordValue:   128849018);
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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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            _0_7: hwFloat = (isNegative: false; QWordValue:  3006477107);
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            _0_8: hwFloat = (isNegative: false; QWordValue:  3435973837);
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           _0_84: hwFloat = (isNegative: false; QWordValue:  3607772528);
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           _0_87: hwFloat = (isNegative: false; QWordValue:  3736621547);
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            _0_9: hwFloat = (isNegative: false; QWordValue:  3865470566);
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parents:
diff changeset
   138
           _0_93: hwFloat = (isNegative: false; QWordValue:  3994319585);
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unc0rr
parents:
diff changeset
   139
           _0_96: hwFloat = (isNegative: false; QWordValue:  4123168604);
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unc0rr
parents:
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   140
          _0_995: hwFloat = (isNegative: false; QWordValue:  4273492459);
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unc0rr
parents:
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   141
          _0_999: hwFloat = (isNegative: false; QWordValue:  4290672328);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   142
              _0: hwFloat = (isNegative: false; QWordValue:           0);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   143
              _1: hwFloat = (isNegative: false; QWordValue:  4294967296);
513
69e06d710d46 Moving hedgehog could get another hedgehog moving forward
unc0rr
parents: 498
diff changeset
   144
            _1_5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3 div 2);
3584
7c05f2e0a8b5 rope: another small optimization
sheepluva
parents: 3583
diff changeset
   145
            _1_9: hwFloat = (isNegative: false; QWordValue:  8160437862);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   146
              _2: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   147
              _3: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   148
              _4: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   149
              _5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 5);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   150
              _6: hwFloat = (isNegative: false; QWordValue:  4294967296 * 6);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   151
             _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
   152
             _12: hwFloat = (isNegative: false; QWordValue:  4294967296 * 12);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   153
             _16: hwFloat = (isNegative: false; QWordValue:  4294967296 * 16);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   154
             _19: hwFloat = (isNegative: false; QWordValue:  4294967296 * 19);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   155
             _20: hwFloat = (isNegative: false; QWordValue:  4294967296 * 20);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   156
             _25: hwFloat = (isNegative: false; QWordValue:  4294967296 * 25);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   157
             _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
   158
             _40: hwFloat = (isNegative: false; QWordValue:  4294967296 * 40);
3036
c6ba6531cb4b Make barrels a little more likely to blow up. 25% more damage in fall
nemo
parents: 2955
diff changeset
   159
             _50: hwFloat = (isNegative: false; QWordValue:  4294967296 * 50);
2933
02af54eb7e1e Experiment with barrels. Add rolling.
nemo
parents: 2905
diff changeset
   160
             _70: hwFloat = (isNegative: false; QWordValue:  4294967296 * 70);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   161
            _128: hwFloat = (isNegative: false; QWordValue:  4294967296 * 128);
5319
51d8e4747876 bounce. tweak of values, remove friction modifier, move to weapon, to match timer behaviour
nemo
parents: 5192
diff changeset
   162
            _250: hwFloat = (isNegative: false; QWordValue:  4294967296 * 250);
1915
c357f5b55320 patch by nemo:
unc0rr
parents: 1753
diff changeset
   163
            _256: hwFloat = (isNegative: false; QWordValue:  4294967296 * 256);
1124
1636a3c7c061 - Airplane is higher
unc0rr
parents: 1066
diff changeset
   164
            _300: hwFloat = (isNegative: false; QWordValue:  4294967296 * 300);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   165
            _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
   166
           _1000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1000);
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   167
           _1024: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1024);
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   168
           _2048: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2048);
1753
2ccba26f1aa4 Apply nemo's world resize patch
unc0rr
parents: 1652
diff changeset
   169
           _4096: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4096);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   170
          _10000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 10000);
351
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unc0rr
parents:
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   171
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   172
         cLittle: hwFloat = (isNegative: false; QWordValue:           1);
967
8be3938d73c2 Don't let jumping hedgehog to move others
unc0rr
parents: 953
diff changeset
   173
         cHHKick: hwFloat = (isNegative: false; QWordValue:    42949673);  // _0_01
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   174
{$WARNINGS ON}
351
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unc0rr
parents:
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   175
{$ENDIF}
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parents:
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   176
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unc0rr
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   177
{$IFNDEF FPC}
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   178
type hwFloat = Extended;
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parents:
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   179
{$ENDIF}
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unc0rr
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   180
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
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   181
implementation
4415
941251bad467 SinTable.inc -> uSinTable.pas
unc0rr
parents: 4374
diff changeset
   182
uses uSinTable;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   183
3599
715a43602da8 sheepluva's inline patch, fix a crash in overlay
koda
parents: 3591
diff changeset
   184
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   185
{$IFDEF FPC}
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unc0rr
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   186
515
270f10276d2e - Remove deprecated code
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   187
function int2hwFloat (const i: LongInt) : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   188
begin
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
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diff changeset
   189
int2hwFloat.isNegative:= i < 0;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
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diff changeset
   190
int2hwFloat.Round:= abs(i);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
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diff changeset
   191
int2hwFloat.Frac:= 0
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   192
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   193
5151
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   194
function hwFloat2Float (const i: hwFloat) : extended;
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   195
begin
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   196
hwFloat2Float:= i.QWordValue / $100000000;
5192
881c14f81d12 Optimize hwFloat2Float a bit
unc0rr
parents: 5151
diff changeset
   197
if i.isNegative then 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
   198
end;
cbadb9fa52fc An experiment - make bazooka AI use float instead of hwFloat - should be as accurate, but faster.
nemo
parents: 5124
diff changeset
   199
515
270f10276d2e - Remove deprecated code
unc0rr
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operator + (const z1, z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
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   201
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   202
if z1.isNegative = z2.isNegative then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   203
   begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   204
   z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
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   205
   z.QWordValue:= z1.QWordValue + z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   206
   end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
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   207
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   208
   if z1.QWordValue > z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   209
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   210
      z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   211
      z.QWordValue:= z1.QWordValue - z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   212
      end else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   213
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   214
      z.isNegative:= z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   215
      z.QWordValue:= z2.QWordValue - z1.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   216
      end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   217
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
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   218
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
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   219
operator - (const z1, z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
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   220
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   221
if z1.isNegative = z2.isNegative then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   222
   if z1.QWordValue > z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   223
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   224
      z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   225
      z.QWordValue:= z1.QWordValue - z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   226
      end else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   227
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   228
      z.isNegative:= not z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   229
      z.QWordValue:= z2.QWordValue - z1.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   230
      end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   231
else begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   232
     z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   233
     z.QWordValue:= z1.QWordValue + z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   234
     end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   235
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   236
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   237
operator - (const z1: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   238
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   239
z:= z1;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   240
z.isNegative:= not z.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   241
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   242
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   243
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   244
operator * (const z1, z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   245
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   246
z.isNegative:= z1.isNegative xor z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   247
z.QWordValue:= QWord(z1.Round) * z2.Frac +
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   248
               QWord(z1.Frac) * z2.Round +
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   249
               ((QWord(z1.Frac) * z2.Frac) shr 32);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   250
z.Round:= z.Round + QWord(z1.Round) * z2.Round;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   251
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   252
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   253
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   254
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   255
z.isNegative:= z1.isNegative xor (z2 < 0);
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   256
z.QWordValue:= z1.QWordValue * abs(z2)
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   257
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   258
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   259
operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   260
var t: hwFloat;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   261
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   262
z.isNegative:= z1.isNegative xor z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   263
z.Round:= z1.QWordValue div z2.QWordValue;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   264
t:= z1 - z2 * z.Round;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   265
if t.QWordValue = 0 then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   266
   z.Frac:= 0
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   267
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   268
   begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   269
   while ((t.QWordValue and $8000000000000000) = 0) and
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   270
         ((z2.QWordValue and $8000000000000000) = 0) do
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   271
         begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   272
         t.QWordValue:= t.QWordValue shl 1;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   273
         z2.QWordValue:= z2.QWordValue shl 1
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   274
         end;
543
465e2ec8f05f - Better randomness of placing hedgehogs on the land
unc0rr
parents: 538
diff changeset
   275
   if z2.Round > 0 then z.Frac:= (t.QWordValue) div (z2.Round)
465e2ec8f05f - Better randomness of placing hedgehogs on the land
unc0rr
parents: 538
diff changeset
   276
                   else z.Frac:= 0
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   277
   end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   278
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   279
515
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unc0rr
parents: 513
diff changeset
   280
operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   281
begin
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   282
z.isNegative:= z1.isNegative xor (z2 < 0);
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   283
z.QWordValue:= z1.QWordValue div abs(z2)
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   284
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   285
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   286
operator < (const z1, z2: hwFloat) b : boolean;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   287
begin
916
1d0022336fbb - Small optimization in hwFloat
unc0rr
parents: 883
diff changeset
   288
if z1.isNegative xor z2.isNegative then
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   289
   b:= z1.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   290
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   291
   if z1.QWordValue = z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   292
      b:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   293
   else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   294
      b:= (z1.QWordValue < z2.QWordValue) xor z1.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   295
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   296
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   297
operator > (const z1, z2: hwFloat) b : boolean;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   298
begin
916
1d0022336fbb - Small optimization in hwFloat
unc0rr
parents: 883
diff changeset
   299
if z1.isNegative xor z2.isNegative then
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   300
   b:= z2.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   301
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   302
   if z1.QWordValue = z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   303
      b:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   304
   else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   305
      b:= (z1.QWordValue > z2.QWordValue) xor z2.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   306
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   307
2905
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   308
function cstr(const z: hwFloat): shortstring;
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   309
var tmpstr: shortstring;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   310
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   311
str(z.Round, cstr);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   312
if z.Frac <> 0 then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   313
   begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   314
   str(z.Frac / $100000000:1:15, tmpstr);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   315
   delete(tmpstr, 1, 2);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   316
   cstr:= cstr + '.' + tmpstr
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   317
   end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   318
if z.isNegative then cstr:= '-' + cstr
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   319
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   320
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   321
function hwRound(const t: hwFloat): LongInt;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   322
begin
2300
d633bc70c893 prevent overflow
nemo
parents: 1915
diff changeset
   323
if t.isNegative then hwRound:= -(t.Round and $7FFFFFFF)
d633bc70c893 prevent overflow
nemo
parents: 1915
diff changeset
   324
                else hwRound:= t.Round and $7FFFFFFF
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   325
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   326
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   327
function hwAbs(const t: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   328
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   329
hwAbs:= t;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   330
hwAbs.isNegative:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   331
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   332
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   333
function hwSqr(const t: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   334
begin
1433
4af291d5d79c Repair flame dependancy on wind
unc0rr
parents: 1124
diff changeset
   335
hwSqr.isNegative:= false;
4af291d5d79c Repair flame dependancy on wind
unc0rr
parents: 1124
diff changeset
   336
hwSqr.QWordValue:=
2948
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2933
diff changeset
   337
      ((QWord(t.Round) * t.Round) shl 32)
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2933
diff changeset
   338
    + QWord(t.Round) * t.Frac * 2
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2933
diff changeset
   339
    + ((QWord(t.Frac) * t.Frac) shr 32);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   340
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   341
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   342
function hwSqrt(const t: hwFloat): hwFloat;
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   343
var l, r: QWord;
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   344
    c: hwFloat;
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   345
begin
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   346
hwSqrt.isNegative:= false;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   347
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   348
if t.Round = 0 then
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   349
   begin
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   350
   l:= t.QWordValue;
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   351
   r:= $100000000
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   352
   end else
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   353
   begin
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   354
   l:= $100000000;
953
237fc147950c Fix bug in hwSqrt when calculating square root of number >= 65536
unc0rr
parents: 916
diff changeset
   355
   r:= t.QWordValue div 2 + $80000000; // r:= t / 2 + 0.5
237fc147950c Fix bug in hwSqrt when calculating square root of number >= 65536
unc0rr
parents: 916
diff changeset
   356
   if r > $FFFFFFFFFFFF then r:= $FFFFFFFFFFFF
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   357
   end;
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   358
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   359
repeat
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   360
  c.QWordValue:= (l + r) div 2;
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   361
  if hwSqr(c).QWordValue > t.QWordValue then r:= c.QWordValue else l:= c.QWordValue
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   362
until r - l <= 1;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   363
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   364
hwSqrt.QWordValue:= l
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   365
end;
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   366
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   367
function Distance(const dx, dy: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   368
begin
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   369
Distance:= hwSqrt(hwSqr(dx) + hwSqr(dy))
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   370
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   371
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   372
function DistanceI(const dx, dy: LongInt): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   373
begin
856
beecc5c5c71c - Fix braindead shotgun shot arithmetics
unc0rr
parents: 835
diff changeset
   374
DistanceI:= hwSqrt(int2hwFloat(sqr(dx) + sqr(dy)))
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   375
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   376
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   377
function SignAs(const num, signum: hwFloat): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   378
begin
856
beecc5c5c71c - Fix braindead shotgun shot arithmetics
unc0rr
parents: 835
diff changeset
   379
SignAs.QWordValue:= num.QWordValue;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   380
SignAs.isNegative:= signum.isNegative
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   381
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   382
4374
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   383
function hwSign(r: hwFloat): LongInt;
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   384
begin
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   385
// yes, we have negative zero for a reason
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   386
if r.isNegative then hwSign:= -1 else hwSign:= 1
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   387
end;
bcefeeabaa33 Move some stuff from uMisc to uUtils
unC0Rr
parents: 3929
diff changeset
   388
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   389
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   390
function AngleSin(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   391
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
   392
//TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   393
AngleSin.isNegative:= false;
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   394
if Angle < 1024 then AngleSin.QWordValue:= SinTable[Angle]
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   395
                else AngleSin.QWordValue:= SinTable[2048 - Angle]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   396
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   397
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   398
function AngleCos(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   399
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
   400
//TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true);
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   401
AngleCos.isNegative:= Angle > 1024;
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   402
if Angle < 1024 then AngleCos.QWordValue:= SinTable[1024 - Angle]
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   403
                else AngleCos.QWordValue:= SinTable[Angle - 1024]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   404
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   405
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   406
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   407
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   408
end.