hedgewars/uFloat.pas
author sheepluva
Tue, 29 Jun 2010 06:27:59 +0200
changeset 3584 7c05f2e0a8b5
parent 3583 13818670ad9e
child 3591 c447d5218f6f
permissions -rw-r--r--
rope: another small optimization
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     1
(*
1066
1f1b3686a2b0 Update copyright headers a bit
unc0rr
parents: 967
diff changeset
     2
 * Hedgewars, a free turn based strategy game
883
07a568ba44e0 Update copyright info in source files headers
unc0rr
parents: 856
diff changeset
     3
 * Copyright (c) 2007, 2008 Andrey Korotaev <unC0Rr@gmail.com>
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     4
 *
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     5
 * This program is free software; you can redistribute it and/or modify
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     6
 * it under the terms of the GNU General Public License as published by
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     7
 * the Free Software Foundation; version 2 of the License
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     8
 *
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
     9
 * This program is distributed in the hope that it will be useful,
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    10
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    11
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    12
 * GNU General Public License for more details.
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    13
 *
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    14
 * You should have received a copy of the GNU General Public License
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    15
 * along with this program; if not, write to the Free Software
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    16
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    17
 *)
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    18
2630
079ef82eac75 revamped file access and debug display
koda
parents: 2599
diff changeset
    19
{$INCLUDE "options.inc"}
079ef82eac75 revamped file access and debug display
koda
parents: 2599
diff changeset
    20
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    21
unit uFloat;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    22
interface
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    23
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    24
{$IFDEF FPC}
2599
c7153d2348f3 move compiler directives to standard pascal
koda
parents: 2587
diff changeset
    25
{$IFDEF ENDIAN_LITTLE}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    26
type hwFloat = record
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    27
               isNegative: boolean;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    28
               case byte of
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    29
               0: (Frac, Round: Longword);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    30
               1: (QWordValue : QWord);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    31
               end;
2599
c7153d2348f3 move compiler directives to standard pascal
koda
parents: 2587
diff changeset
    32
{$ELSE}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    33
type hwFloat = record
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    34
               isNegative: boolean;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    35
               case byte of
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    36
               0: (Round, Frac: Longword);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    37
               1: (QWordValue : QWord);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    38
               end;
2599
c7153d2348f3 move compiler directives to standard pascal
koda
parents: 2587
diff changeset
    39
{$ENDIF}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    40
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    41
function int2hwFloat (const i: LongInt) : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    42
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    43
operator + (const z1, z2: hwFloat) z : hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    44
operator - (const z1, z2: hwFloat) z : hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    45
operator - (const z1: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    46
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    47
operator * (const z1, z2: hwFloat) z : hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    48
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    49
operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    50
operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    51
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    52
operator < (const z1, z2: hwFloat) b : boolean;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    53
operator > (const z1, z2: hwFloat) b : boolean;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    54
2905
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
    55
function cstr(const z: hwFloat): shortstring;
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    56
function hwRound(const t: hwFloat): LongInt;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    57
function hwAbs(const t: hwFloat): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    58
function hwSqr(const t: hwFloat): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    59
function hwSqrt(const t: hwFloat): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    60
function Distance(const dx, dy: hwFloat): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    61
function DistanceI(const dx, dy: LongInt): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    62
function AngleSin(const Angle: Longword): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    63
function AngleCos(const Angle: Longword): hwFloat;
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
    64
function SignAs(const num, signum: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    65
2599
c7153d2348f3 move compiler directives to standard pascal
koda
parents: 2587
diff changeset
    66
{$IFDEF FPC}
538
74219eadab5e - Various small fixes
unc0rr
parents: 515
diff changeset
    67
{$J-}
2599
c7153d2348f3 move compiler directives to standard pascal
koda
parents: 2587
diff changeset
    68
{$ENDIF}
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
    69
{$WARNINGS OFF}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    70
const  _1div1024: hwFloat = (isNegative: false; QWordValue:     4194304);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    71
      _1div10000: hwFloat = (isNegative: false; QWordValue:      429496);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    72
      _1div50000: hwFloat = (isNegative: false; QWordValue:       85899);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    73
     _1div100000: hwFloat = (isNegative: false; QWordValue:       42950);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    74
          _1div3: hwFloat = (isNegative: false; QWordValue:  1431655766);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    75
            hwPi: hwFloat = (isNegative: false; QWordValue: 13493037704);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    76
       _0_000004: hwFloat = (isNegative: false; QWordValue:       17179);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    77
         _0_0002: hwFloat = (isNegative: false; QWordValue:      858993);
1586
2c6f1d1f43c1 Adjust flame parameters to produce more damage
unc0rr
parents: 1433
diff changeset
    78
         _0_0005: hwFloat = (isNegative: false; QWordValue:     2147484);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    79
          _0_001: hwFloat = (isNegative: false; QWordValue:     4294967);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    80
          _0_003: hwFloat = (isNegative: false; QWordValue:    12884902);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    81
          _0_004: hwFloat = (isNegative: false; QWordValue:    17179869);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    82
          _0_005: hwFloat = (isNegative: false; QWordValue:    21474836);
3428
46a2694867bc portal:
sheepluva
parents: 3422
diff changeset
    83
          _0_008: hwFloat = (isNegative: false; QWordValue:    34359738);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    84
           _0_01: hwFloat = (isNegative: false; QWordValue:    42949673);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    85
           _0_02: hwFloat = (isNegative: false; QWordValue:    85899345);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    86
           _0_03: hwFloat = (isNegative: false; QWordValue:   128849018);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    87
           _0_08: hwFloat = (isNegative: false; QWordValue:   343597383);
365
a26cec847dd7 - New land generator feature: islands in the sky
unc0rr
parents: 358
diff changeset
    88
            _0_1: hwFloat = (isNegative: false; QWordValue:   429496730);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    89
           _0_15: hwFloat = (isNegative: false; QWordValue:   644245094);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    90
            _0_2: hwFloat = (isNegative: false; QWordValue:   858993459);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    91
           _0_25: hwFloat = (isNegative: false; QWordValue:  1073741824);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    92
            _0_3: hwFloat = (isNegative: false; QWordValue:  1288490189);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    93
           _0_35: hwFloat = (isNegative: false; QWordValue:  1503238553);
2784
1a2e3c7c6a46 King health proportional to team size
nemo
parents: 2630
diff changeset
    94
          _0_375: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3 div 8);
835
6f567934cc44 Automatically use parachute when vertical speed is high enough
unc0rr
parents: 745
diff changeset
    95
           _0_39: hwFloat = (isNegative: false; QWordValue:  1675037245);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    96
            _0_4: hwFloat = (isNegative: false; QWordValue:  1717986918);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    97
           _0_45: hwFloat = (isNegative: false; QWordValue:  1932735283);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    98
            _0_5: hwFloat = (isNegative: false; QWordValue:  2147483648);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
    99
           _0_55: hwFloat = (isNegative: false; QWordValue:  2362232012);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   100
            _0_6: hwFloat = (isNegative: false; QWordValue:  2576980377);
3583
13818670ad9e rope: tiny optimisation
sheepluva
parents: 3428
diff changeset
   101
           _0_64: hwFloat = (isNegative: false; QWordValue:  2748779064);
358
236bbd12d4d9 - New Land Generator
unc0rr
parents: 357
diff changeset
   102
            _0_7: hwFloat = (isNegative: false; QWordValue:  3006477107);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   103
            _0_8: hwFloat = (isNegative: false; QWordValue:  3435973837);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   104
           _0_84: hwFloat = (isNegative: false; QWordValue:  3607772528);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   105
           _0_87: hwFloat = (isNegative: false; QWordValue:  3736621547);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   106
            _0_9: hwFloat = (isNegative: false; QWordValue:  3865470566);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   107
           _0_93: hwFloat = (isNegative: false; QWordValue:  3994319585);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   108
           _0_96: hwFloat = (isNegative: false; QWordValue:  4123168604);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   109
          _0_995: hwFloat = (isNegative: false; QWordValue:  4273492459);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   110
          _0_999: hwFloat = (isNegative: false; QWordValue:  4290672328);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   111
              _0: hwFloat = (isNegative: false; QWordValue:           0);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   112
              _1: hwFloat = (isNegative: false; QWordValue:  4294967296);
513
69e06d710d46 Moving hedgehog could get another hedgehog moving forward
unc0rr
parents: 498
diff changeset
   113
            _1_5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3 div 2);
3584
7c05f2e0a8b5 rope: another small optimization
sheepluva
parents: 3583
diff changeset
   114
            _1_9: hwFloat = (isNegative: false; QWordValue:  8160437862);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   115
              _2: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   116
              _3: hwFloat = (isNegative: false; QWordValue:  4294967296 * 3);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   117
              _4: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   118
              _5: hwFloat = (isNegative: false; QWordValue:  4294967296 * 5);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   119
              _6: hwFloat = (isNegative: false; QWordValue:  4294967296 * 6);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   120
             _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
   121
             _12: hwFloat = (isNegative: false; QWordValue:  4294967296 * 12);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   122
             _16: hwFloat = (isNegative: false; QWordValue:  4294967296 * 16);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   123
             _19: hwFloat = (isNegative: false; QWordValue:  4294967296 * 19);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   124
             _20: hwFloat = (isNegative: false; QWordValue:  4294967296 * 20);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   125
             _25: hwFloat = (isNegative: false; QWordValue:  4294967296 * 25);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   126
             _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
   127
             _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
   128
             _50: hwFloat = (isNegative: false; QWordValue:  4294967296 * 50);
2933
02af54eb7e1e Experiment with barrels. Add rolling.
nemo
parents: 2905
diff changeset
   129
             _70: hwFloat = (isNegative: false; QWordValue:  4294967296 * 70);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   130
            _128: hwFloat = (isNegative: false; QWordValue:  4294967296 * 128);
1915
c357f5b55320 patch by nemo:
unc0rr
parents: 1753
diff changeset
   131
            _256: hwFloat = (isNegative: false; QWordValue:  4294967296 * 256);
1124
1636a3c7c061 - Airplane is higher
unc0rr
parents: 1066
diff changeset
   132
            _300: hwFloat = (isNegative: false; QWordValue:  4294967296 * 300);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   133
            _450: hwFloat = (isNegative: false; QWordValue:  4294967296 * 450);
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   134
           _1024: hwFloat = (isNegative: false; QWordValue:  4294967296 * 1024);
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   135
           _2048: hwFloat = (isNegative: false; QWordValue:  4294967296 * 2048);
1753
2ccba26f1aa4 Apply nemo's world resize patch
unc0rr
parents: 1652
diff changeset
   136
           _4096: hwFloat = (isNegative: false; QWordValue:  4294967296 * 4096);
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   137
          _10000: hwFloat = (isNegative: false; QWordValue:  4294967296 * 10000);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   138
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   139
         cLittle: hwFloat = (isNegative: false; QWordValue:           1);
967
8be3938d73c2 Don't let jumping hedgehog to move others
unc0rr
parents: 953
diff changeset
   140
         cHHKick: hwFloat = (isNegative: false; QWordValue:    42949673);  // _0_01
611
8cf6d27cec86 Fix warnings
unc0rr
parents: 543
diff changeset
   141
{$WARNINGS ON}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   142
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   143
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   144
{$IFNDEF FPC}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   145
type hwFloat = Extended;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   146
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   147
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   148
implementation
3407
dcc129c4352e Engine:
smxx
parents: 3384
diff changeset
   149
uses uMisc;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   150
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   151
{$IFDEF FPC}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   152
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   153
function int2hwFloat (const i: LongInt) : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   154
begin
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   155
int2hwFloat.isNegative:= i < 0;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   156
int2hwFloat.Round:= abs(i);
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   157
int2hwFloat.Frac:= 0
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   158
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   159
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   160
operator + (const z1, z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   161
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   162
if z1.isNegative = z2.isNegative then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   163
   begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   164
   z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   165
   z.QWordValue:= z1.QWordValue + z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   166
   end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   167
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   168
   if z1.QWordValue > z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   169
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   170
      z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   171
      z.QWordValue:= z1.QWordValue - z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   172
      end else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   173
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   174
      z.isNegative:= z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   175
      z.QWordValue:= z2.QWordValue - z1.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   176
      end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   177
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   178
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   179
operator - (const z1, z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   180
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   181
if z1.isNegative = z2.isNegative then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   182
   if z1.QWordValue > z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   183
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   184
      z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   185
      z.QWordValue:= z1.QWordValue - z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   186
      end else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   187
      begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   188
      z.isNegative:= not z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   189
      z.QWordValue:= z2.QWordValue - z1.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   190
      end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   191
else begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   192
     z.isNegative:= z1.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   193
     z.QWordValue:= z1.QWordValue + z2.QWordValue
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   194
     end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   195
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   196
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   197
operator - (const z1: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   198
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   199
z:= z1;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   200
z.isNegative:= not z.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   201
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   202
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   203
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   204
operator * (const z1, z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   205
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   206
z.isNegative:= z1.isNegative xor z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   207
z.QWordValue:= QWord(z1.Round) * z2.Frac +
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   208
               QWord(z1.Frac) * z2.Round +
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   209
               ((QWord(z1.Frac) * z2.Frac) shr 32);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   210
z.Round:= z.Round + QWord(z1.Round) * z2.Round;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   211
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   212
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   213
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   214
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   215
z.isNegative:= z1.isNegative xor (z2 < 0);
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   216
z.QWordValue:= z1.QWordValue * abs(z2)
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   217
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   218
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   219
operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   220
var t: hwFloat;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   221
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   222
z.isNegative:= z1.isNegative xor z2.isNegative;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   223
z.Round:= z1.QWordValue div z2.QWordValue;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   224
t:= z1 - z2 * z.Round;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   225
if t.QWordValue = 0 then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   226
   z.Frac:= 0
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   227
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   228
   begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   229
   while ((t.QWordValue and $8000000000000000) = 0) and
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   230
         ((z2.QWordValue and $8000000000000000) = 0) do
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   231
         begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   232
         t.QWordValue:= t.QWordValue shl 1;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   233
         z2.QWordValue:= z2.QWordValue shl 1
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   234
         end;
543
465e2ec8f05f - Better randomness of placing hedgehogs on the land
unc0rr
parents: 538
diff changeset
   235
   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
   236
                   else z.Frac:= 0
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   237
   end
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   238
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   239
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   240
operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   241
begin
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   242
z.isNegative:= z1.isNegative xor (z2 < 0);
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   243
z.QWordValue:= z1.QWordValue div abs(z2)
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   244
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   245
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   246
operator < (const z1, z2: hwFloat) b : boolean;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   247
begin
916
1d0022336fbb - Small optimization in hwFloat
unc0rr
parents: 883
diff changeset
   248
if z1.isNegative xor z2.isNegative then
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   249
   b:= z1.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   250
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   251
   if z1.QWordValue = z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   252
      b:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   253
   else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   254
      b:= (z1.QWordValue < z2.QWordValue) xor z1.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   255
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   256
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   257
operator > (const z1, z2: hwFloat) b : boolean;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   258
begin
916
1d0022336fbb - Small optimization in hwFloat
unc0rr
parents: 883
diff changeset
   259
if z1.isNegative xor z2.isNegative then
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   260
   b:= z2.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   261
else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   262
   if z1.QWordValue = z2.QWordValue then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   263
      b:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   264
   else
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   265
      b:= (z1.QWordValue > z2.QWordValue) xor z2.isNegative
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   266
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   267
2905
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   268
function cstr(const z: hwFloat): shortstring;
f3c79f7193a9 Engine:
smxx
parents: 2784
diff changeset
   269
var tmpstr: shortstring;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   270
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   271
str(z.Round, cstr);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   272
if z.Frac <> 0 then
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   273
   begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   274
   str(z.Frac / $100000000:1:15, tmpstr);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   275
   delete(tmpstr, 1, 2);
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   276
   cstr:= cstr + '.' + tmpstr
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   277
   end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   278
if z.isNegative then cstr:= '-' + cstr
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   279
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   280
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   281
function hwRound(const t: hwFloat): LongInt;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   282
begin
2300
d633bc70c893 prevent overflow
nemo
parents: 1915
diff changeset
   283
if t.isNegative then hwRound:= -(t.Round and $7FFFFFFF)
d633bc70c893 prevent overflow
nemo
parents: 1915
diff changeset
   284
                else hwRound:= t.Round and $7FFFFFFF
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   285
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   286
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   287
function hwAbs(const t: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   288
begin
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   289
hwAbs:= t;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   290
hwAbs.isNegative:= false
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   291
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   292
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   293
function hwSqr(const t: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   294
begin
1433
4af291d5d79c Repair flame dependancy on wind
unc0rr
parents: 1124
diff changeset
   295
hwSqr.isNegative:= false;
4af291d5d79c Repair flame dependancy on wind
unc0rr
parents: 1124
diff changeset
   296
hwSqr.QWordValue:=
2948
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2933
diff changeset
   297
      ((QWord(t.Round) * t.Round) shl 32)
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2933
diff changeset
   298
    + QWord(t.Round) * t.Frac * 2
3f21a9dc93d0 Replace tabs with spaces using 'expand -t 4' command
unc0rr
parents: 2933
diff changeset
   299
    + ((QWord(t.Frac) * t.Frac) shr 32);
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   300
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   301
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   302
function hwSqrt(const t: hwFloat): hwFloat;
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   303
var l, r: QWord;
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   304
    c: hwFloat;
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   305
begin
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   306
hwSqrt.isNegative:= false;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   307
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   308
if t.Round = 0 then
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   309
   begin
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   310
   l:= t.QWordValue;
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   311
   r:= $100000000
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   312
   end else
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   313
   begin
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   314
   l:= $100000000;
953
237fc147950c Fix bug in hwSqrt when calculating square root of number >= 65536
unc0rr
parents: 916
diff changeset
   315
   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
   316
   if r > $FFFFFFFFFFFF then r:= $FFFFFFFFFFFF
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   317
   end;
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   318
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   319
repeat
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   320
  c.QWordValue:= (l + r) div 2;
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   321
  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
   322
until r - l <= 1;
744
7a9663194767 - Remove debug
unc0rr
parents: 738
diff changeset
   323
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   324
hwSqrt.QWordValue:= l
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   325
end;
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   326
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   327
function Distance(const dx, dy: hwFloat): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   328
begin
738
d7f640e99b17 Ignore many files, created by build system
unc0rr
parents: 611
diff changeset
   329
Distance:= hwSqrt(hwSqr(dx) + hwSqr(dy))
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   330
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   331
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   332
function DistanceI(const dx, dy: LongInt): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   333
begin
856
beecc5c5c71c - Fix braindead shotgun shot arithmetics
unc0rr
parents: 835
diff changeset
   334
DistanceI:= hwSqrt(int2hwFloat(sqr(dx) + sqr(dy)))
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   335
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   336
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   337
function SignAs(const num, signum: hwFloat): hwFloat;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   338
begin
856
beecc5c5c71c - Fix braindead shotgun shot arithmetics
unc0rr
parents: 835
diff changeset
   339
SignAs.QWordValue:= num.QWordValue;
498
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   340
SignAs.isNegative:= signum.isNegative
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   341
end;
9c8b385dc9a1 - Get rid of operator := to have GPC support
unc0rr
parents: 493
diff changeset
   342
2599
c7153d2348f3 move compiler directives to standard pascal
koda
parents: 2587
diff changeset
   343
{$INCLUDE "SinTable.inc"}
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   344
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   345
function AngleSin(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   346
begin
1629
9f12da88d769 - More debug stuff
unc0rr
parents: 1586
diff changeset
   347
{$IFDEF DEBUGFILE}
1640
31cf38df07ef Fix wrong assert
unc0rr
parents: 1629
diff changeset
   348
TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true);
1629
9f12da88d769 - More debug stuff
unc0rr
parents: 1586
diff changeset
   349
{$ENDIF}
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   350
AngleSin.isNegative:= false;
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   351
if Angle < 1024 then AngleSin.QWordValue:= SinTable[Angle]
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   352
                else AngleSin.QWordValue:= SinTable[2048 - Angle]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   353
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   354
515
270f10276d2e - Remove deprecated code
unc0rr
parents: 513
diff changeset
   355
function AngleCos(const Angle: Longword): hwFloat;
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   356
begin
1629
9f12da88d769 - More debug stuff
unc0rr
parents: 1586
diff changeset
   357
{$IFDEF DEBUGFILE}
1640
31cf38df07ef Fix wrong assert
unc0rr
parents: 1629
diff changeset
   358
TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true);
1629
9f12da88d769 - More debug stuff
unc0rr
parents: 1586
diff changeset
   359
{$ENDIF}
357
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   360
AngleCos.isNegative:= Angle > 1024;
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   361
if Angle < 1024 then AngleCos.QWordValue:= SinTable[1024 - Angle]
165a040e4cfa - Fix Blow Torch and Air Attack
unc0rr
parents: 355
diff changeset
   362
                else AngleCos.QWordValue:= SinTable[Angle - 1024]
351
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   363
end;
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   364
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   365
{$ENDIF}
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   366
29bc9c36ad5f Fixed-point arithmetics in engine.
unc0rr
parents:
diff changeset
   367
end.