author | unc0rr |
Sun, 04 Apr 2010 07:50:01 +0000 | |
changeset 3300 | 4adaad1d5027 |
parent 3036 | c6ba6531cb4b |
child 3303 | 397a8f048bb3 |
permissions | -rw-r--r-- |
351 | 1 |
(* |
1066 | 2 |
* Hedgewars, a free turn based strategy game |
883 | 3 |
* Copyright (c) 2007, 2008 Andrey Korotaev <unC0Rr@gmail.com> |
351 | 4 |
* |
5 |
* This program is free software; you can redistribute it and/or modify |
|
6 |
* it under the terms of the GNU General Public License as published by |
|
7 |
* the Free Software Foundation; version 2 of the License |
|
8 |
* |
|
9 |
* This program is distributed in the hope that it will be useful, |
|
10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
12 |
* GNU General Public License for more details. |
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13 |
* |
|
14 |
* You should have received a copy of the GNU General Public License |
|
15 |
* along with this program; if not, write to the Free Software |
|
16 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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17 |
*) |
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18 |
||
2630 | 19 |
{$INCLUDE "options.inc"} |
20 |
||
351 | 21 |
unit uFloat; |
22 |
interface |
|
23 |
||
24 |
{$IFDEF FPC} |
|
2599 | 25 |
{$IFDEF ENDIAN_LITTLE} |
351 | 26 |
type hwFloat = record |
27 |
isNegative: boolean; |
|
28 |
case byte of |
|
29 |
0: (Frac, Round: Longword); |
|
30 |
1: (QWordValue : QWord); |
|
31 |
end; |
|
2599 | 32 |
{$ELSE} |
351 | 33 |
type hwFloat = record |
34 |
isNegative: boolean; |
|
35 |
case byte of |
|
36 |
0: (Round, Frac: Longword); |
|
37 |
1: (QWordValue : QWord); |
|
38 |
end; |
|
2599 | 39 |
{$ENDIF} |
351 | 40 |
|
515 | 41 |
function int2hwFloat (const i: LongInt) : hwFloat; |
351 | 42 |
|
515 | 43 |
operator + (const z1, z2: hwFloat) z : hwFloat; |
44 |
operator - (const z1, z2: hwFloat) z : hwFloat; |
|
45 |
operator - (const z1: hwFloat) z : hwFloat; |
|
351 | 46 |
|
515 | 47 |
operator * (const z1, z2: hwFloat) z : hwFloat; |
48 |
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; |
|
49 |
operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat; |
|
50 |
operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat; |
|
351 | 51 |
|
515 | 52 |
operator < (const z1, z2: hwFloat) b : boolean; |
53 |
operator > (const z1, z2: hwFloat) b : boolean; |
|
351 | 54 |
|
2905 | 55 |
function cstr(const z: hwFloat): shortstring; |
515 | 56 |
function hwRound(const t: hwFloat): LongInt; |
57 |
function hwAbs(const t: hwFloat): hwFloat; |
|
58 |
function hwSqr(const t: hwFloat): hwFloat; |
|
59 |
function hwSqrt(const t: hwFloat): hwFloat; |
|
60 |
function Distance(const dx, dy: hwFloat): hwFloat; |
|
61 |
function DistanceI(const dx, dy: LongInt): hwFloat; |
|
62 |
function AngleSin(const Angle: Longword): hwFloat; |
|
63 |
function AngleCos(const Angle: Longword): hwFloat; |
|
64 |
function SignAs(const num, signum: hwFloat): hwFloat; |
|
351 | 65 |
|
2599 | 66 |
{$IFDEF FPC} |
538 | 67 |
{$J-} |
2599 | 68 |
{$ENDIF} |
611 | 69 |
{$WARNINGS OFF} |
351 | 70 |
const _1div1024: hwFloat = (isNegative: false; QWordValue: 4194304); |
71 |
_1div10000: hwFloat = (isNegative: false; QWordValue: 429496); |
|
72 |
_1div50000: hwFloat = (isNegative: false; QWordValue: 85899); |
|
73 |
_1div100000: hwFloat = (isNegative: false; QWordValue: 42950); |
|
74 |
_1div3: hwFloat = (isNegative: false; QWordValue: 1431655766); |
|
75 |
hwPi: hwFloat = (isNegative: false; QWordValue: 13493037704); |
|
76 |
_0_000004: hwFloat = (isNegative: false; QWordValue: 17179); |
|
77 |
_0_0002: hwFloat = (isNegative: false; QWordValue: 858993); |
|
1586 | 78 |
_0_0005: hwFloat = (isNegative: false; QWordValue: 2147484); |
351 | 79 |
_0_001: hwFloat = (isNegative: false; QWordValue: 4294967); |
80 |
_0_003: hwFloat = (isNegative: false; QWordValue: 12884902); |
|
81 |
_0_004: hwFloat = (isNegative: false; QWordValue: 17179869); |
|
82 |
_0_005: hwFloat = (isNegative: false; QWordValue: 21474836); |
|
83 |
_0_01: hwFloat = (isNegative: false; QWordValue: 42949673); |
|
84 |
_0_02: hwFloat = (isNegative: false; QWordValue: 85899345); |
|
85 |
_0_03: hwFloat = (isNegative: false; QWordValue: 128849018); |
|
86 |
_0_08: hwFloat = (isNegative: false; QWordValue: 343597383); |
|
365 | 87 |
_0_1: hwFloat = (isNegative: false; QWordValue: 429496730); |
351 | 88 |
_0_15: hwFloat = (isNegative: false; QWordValue: 644245094); |
89 |
_0_2: hwFloat = (isNegative: false; QWordValue: 858993459); |
|
90 |
_0_25: hwFloat = (isNegative: false; QWordValue: 1073741824); |
|
91 |
_0_3: hwFloat = (isNegative: false; QWordValue: 1288490189); |
|
92 |
_0_35: hwFloat = (isNegative: false; QWordValue: 1503238553); |
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2784 | 93 |
_0_375: hwFloat = (isNegative: false; QWordValue: 4294967296 * 3 div 8); |
835
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Automatically use parachute when vertical speed is high enough
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94 |
_0_39: hwFloat = (isNegative: false; QWordValue: 1675037245); |
351 | 95 |
_0_4: hwFloat = (isNegative: false; QWordValue: 1717986918); |
96 |
_0_45: hwFloat = (isNegative: false; QWordValue: 1932735283); |
|
97 |
_0_5: hwFloat = (isNegative: false; QWordValue: 2147483648); |
|
98 |
_0_55: hwFloat = (isNegative: false; QWordValue: 2362232012); |
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99 |
_0_6: hwFloat = (isNegative: false; QWordValue: 2576980377); |
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358 | 100 |
_0_7: hwFloat = (isNegative: false; QWordValue: 3006477107); |
351 | 101 |
_0_8: hwFloat = (isNegative: false; QWordValue: 3435973837); |
102 |
_0_84: hwFloat = (isNegative: false; QWordValue: 3607772528); |
|
103 |
_0_87: hwFloat = (isNegative: false; QWordValue: 3736621547); |
|
104 |
_0_9: hwFloat = (isNegative: false; QWordValue: 3865470566); |
|
105 |
_0_93: hwFloat = (isNegative: false; QWordValue: 3994319585); |
|
106 |
_0_96: hwFloat = (isNegative: false; QWordValue: 4123168604); |
|
107 |
_0_995: hwFloat = (isNegative: false; QWordValue: 4273492459); |
|
1433 | 108 |
_0_998: hwFloat = (isNegative: false; QWordValue: 4294967296); |
351 | 109 |
_0_999: hwFloat = (isNegative: false; QWordValue: 4290672328); |
110 |
_1_9: hwFloat = (isNegative: false; QWordValue: 8160437862); |
|
498 | 111 |
_0: hwFloat = (isNegative: false; QWordValue: 0); |
112 |
_1: hwFloat = (isNegative: false; QWordValue: 4294967296); |
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Moving hedgehog could get another hedgehog moving forward
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113 |
_1_5: hwFloat = (isNegative: false; QWordValue: 4294967296 * 3 div 2); |
498 | 114 |
_2: hwFloat = (isNegative: false; QWordValue: 4294967296 * 2); |
115 |
_3: hwFloat = (isNegative: false; QWordValue: 4294967296 * 3); |
|
116 |
_4: hwFloat = (isNegative: false; QWordValue: 4294967296 * 4); |
|
117 |
_5: hwFloat = (isNegative: false; QWordValue: 4294967296 * 5); |
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118 |
_6: hwFloat = (isNegative: false; QWordValue: 4294967296 * 6); |
|
119 |
_10: hwFloat = (isNegative: false; QWordValue: 4294967296 * 10); |
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120 |
_16: hwFloat = (isNegative: false; QWordValue: 4294967296 * 16); |
|
121 |
_19: hwFloat = (isNegative: false; QWordValue: 4294967296 * 19); |
|
122 |
_20: hwFloat = (isNegative: false; QWordValue: 4294967296 * 20); |
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1652 | 123 |
_0_3x70: hwFloat = (isNegative: false; QWordValue: 1288490189 * 70); |
498 | 124 |
_25: hwFloat = (isNegative: false; QWordValue: 4294967296 * 25); |
125 |
_30: hwFloat = (isNegative: false; QWordValue: 4294967296 * 30); |
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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
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126 |
_40: hwFloat = (isNegative: false; QWordValue: 4294967296 * 40); |
3036
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127 |
_50: hwFloat = (isNegative: false; QWordValue: 4294967296 * 50); |
2933 | 128 |
_70: hwFloat = (isNegative: false; QWordValue: 4294967296 * 70); |
498 | 129 |
_128: hwFloat = (isNegative: false; QWordValue: 4294967296 * 128); |
1915 | 130 |
_256: hwFloat = (isNegative: false; QWordValue: 4294967296 * 256); |
1124 | 131 |
_300: hwFloat = (isNegative: false; QWordValue: 4294967296 * 300); |
498 | 132 |
_450: hwFloat = (isNegative: false; QWordValue: 4294967296 * 450); |
611 | 133 |
_1024: hwFloat = (isNegative: false; QWordValue: 4294967296 * 1024); |
134 |
_2048: hwFloat = (isNegative: false; QWordValue: 4294967296 * 2048); |
|
1753 | 135 |
_4096: hwFloat = (isNegative: false; QWordValue: 4294967296 * 4096); |
498 | 136 |
_10000: hwFloat = (isNegative: false; QWordValue: 4294967296 * 10000); |
351 | 137 |
|
138 |
cLittle: hwFloat = (isNegative: false; QWordValue: 1); |
|
967 | 139 |
cHHKick: hwFloat = (isNegative: false; QWordValue: 42949673); // _0_01 |
611 | 140 |
{$WARNINGS ON} |
351 | 141 |
{$ENDIF} |
142 |
||
143 |
{$IFNDEF FPC} |
|
144 |
type hwFloat = Extended; |
|
145 |
{$ENDIF} |
|
146 |
||
147 |
implementation |
|
744 | 148 |
uses uConsts, uMisc; |
351 | 149 |
|
150 |
{$IFDEF FPC} |
|
151 |
||
515 | 152 |
function int2hwFloat (const i: LongInt) : hwFloat; |
351 | 153 |
begin |
498 | 154 |
int2hwFloat.isNegative:= i < 0; |
155 |
int2hwFloat.Round:= abs(i); |
|
156 |
int2hwFloat.Frac:= 0 |
|
351 | 157 |
end; |
158 |
||
515 | 159 |
operator + (const z1, z2: hwFloat) z : hwFloat; |
351 | 160 |
begin |
161 |
if z1.isNegative = z2.isNegative then |
|
162 |
begin |
|
163 |
z.isNegative:= z1.isNegative; |
|
164 |
z.QWordValue:= z1.QWordValue + z2.QWordValue |
|
165 |
end |
|
166 |
else |
|
167 |
if z1.QWordValue > z2.QWordValue then |
|
168 |
begin |
|
169 |
z.isNegative:= z1.isNegative; |
|
170 |
z.QWordValue:= z1.QWordValue - z2.QWordValue |
|
171 |
end else |
|
172 |
begin |
|
173 |
z.isNegative:= z2.isNegative; |
|
174 |
z.QWordValue:= z2.QWordValue - z1.QWordValue |
|
175 |
end |
|
176 |
end; |
|
177 |
||
515 | 178 |
operator - (const z1, z2: hwFloat) z : hwFloat; |
351 | 179 |
begin |
180 |
if z1.isNegative = z2.isNegative then |
|
181 |
if z1.QWordValue > z2.QWordValue then |
|
182 |
begin |
|
183 |
z.isNegative:= z1.isNegative; |
|
184 |
z.QWordValue:= z1.QWordValue - z2.QWordValue |
|
185 |
end else |
|
186 |
begin |
|
187 |
z.isNegative:= not z2.isNegative; |
|
188 |
z.QWordValue:= z2.QWordValue - z1.QWordValue |
|
189 |
end |
|
190 |
else begin |
|
191 |
z.isNegative:= z1.isNegative; |
|
192 |
z.QWordValue:= z1.QWordValue + z2.QWordValue |
|
193 |
end |
|
194 |
end; |
|
195 |
||
515 | 196 |
operator - (const z1: hwFloat) z : hwFloat; |
351 | 197 |
begin |
198 |
z:= z1; |
|
199 |
z.isNegative:= not z.isNegative |
|
200 |
end; |
|
201 |
||
202 |
||
515 | 203 |
operator * (const z1, z2: hwFloat) z : hwFloat; |
351 | 204 |
begin |
205 |
z.isNegative:= z1.isNegative xor z2.isNegative; |
|
206 |
z.QWordValue:= QWord(z1.Round) * z2.Frac + |
|
207 |
QWord(z1.Frac) * z2.Round + |
|
208 |
((QWord(z1.Frac) * z2.Frac) shr 32); |
|
209 |
z.Round:= z.Round + QWord(z1.Round) * z2.Round; |
|
210 |
end; |
|
211 |
||
515 | 212 |
operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; |
351 | 213 |
begin |
214 |
z.isNegative:= z1.isNegative xor (z2 < 0); |
|
515 | 215 |
z.QWordValue:= z1.QWordValue * abs(z2) |
351 | 216 |
end; |
217 |
||
515 | 218 |
operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat; |
351 | 219 |
var t: hwFloat; |
220 |
begin |
|
221 |
z.isNegative:= z1.isNegative xor z2.isNegative; |
|
222 |
z.Round:= z1.QWordValue div z2.QWordValue; |
|
223 |
t:= z1 - z2 * z.Round; |
|
224 |
if t.QWordValue = 0 then |
|
225 |
z.Frac:= 0 |
|
226 |
else |
|
227 |
begin |
|
228 |
while ((t.QWordValue and $8000000000000000) = 0) and |
|
229 |
((z2.QWordValue and $8000000000000000) = 0) do |
|
230 |
begin |
|
231 |
t.QWordValue:= t.QWordValue shl 1; |
|
232 |
z2.QWordValue:= z2.QWordValue shl 1 |
|
233 |
end; |
|
543
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- Better randomness of placing hedgehogs on the land
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diff
changeset
|
234 |
if z2.Round > 0 then z.Frac:= (t.QWordValue) div (z2.Round) |
465e2ec8f05f
- Better randomness of placing hedgehogs on the land
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diff
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|
235 |
else z.Frac:= 0 |
351 | 236 |
end |
237 |
end; |
|
238 |
||
515 | 239 |
operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat; |
498 | 240 |
begin |
241 |
z.isNegative:= z1.isNegative xor (z2 < 0); |
|
515 | 242 |
z.QWordValue:= z1.QWordValue div abs(z2) |
498 | 243 |
end; |
244 |
||
515 | 245 |
operator < (const z1, z2: hwFloat) b : boolean; |
351 | 246 |
begin |
916 | 247 |
if z1.isNegative xor z2.isNegative then |
351 | 248 |
b:= z1.isNegative |
249 |
else |
|
250 |
if z1.QWordValue = z2.QWordValue then |
|
251 |
b:= false |
|
252 |
else |
|
253 |
b:= (z1.QWordValue < z2.QWordValue) xor z1.isNegative |
|
254 |
end; |
|
255 |
||
515 | 256 |
operator > (const z1, z2: hwFloat) b : boolean; |
351 | 257 |
begin |
916 | 258 |
if z1.isNegative xor z2.isNegative then |
351 | 259 |
b:= z2.isNegative |
260 |
else |
|
261 |
if z1.QWordValue = z2.QWordValue then |
|
262 |
b:= false |
|
263 |
else |
|
264 |
b:= (z1.QWordValue > z2.QWordValue) xor z2.isNegative |
|
265 |
end; |
|
266 |
||
2905 | 267 |
function cstr(const z: hwFloat): shortstring; |
268 |
var tmpstr: shortstring; |
|
351 | 269 |
begin |
270 |
str(z.Round, cstr); |
|
271 |
if z.Frac <> 0 then |
|
272 |
begin |
|
273 |
str(z.Frac / $100000000:1:15, tmpstr); |
|
274 |
delete(tmpstr, 1, 2); |
|
275 |
cstr:= cstr + '.' + tmpstr |
|
276 |
end; |
|
277 |
if z.isNegative then cstr:= '-' + cstr |
|
278 |
end; |
|
279 |
||
515 | 280 |
function hwRound(const t: hwFloat): LongInt; |
351 | 281 |
begin |
2300 | 282 |
if t.isNegative then hwRound:= -(t.Round and $7FFFFFFF) |
283 |
else hwRound:= t.Round and $7FFFFFFF |
|
351 | 284 |
end; |
285 |
||
515 | 286 |
function hwAbs(const t: hwFloat): hwFloat; |
351 | 287 |
begin |
288 |
hwAbs:= t; |
|
289 |
hwAbs.isNegative:= false |
|
290 |
end; |
|
291 |
||
515 | 292 |
function hwSqr(const t: hwFloat): hwFloat; |
351 | 293 |
begin |
1433 | 294 |
hwSqr.isNegative:= false; |
295 |
hwSqr.QWordValue:= |
|
2948
3f21a9dc93d0
Replace tabs with spaces using 'expand -t 4' command
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|
296 |
((QWord(t.Round) * t.Round) shl 32) |
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Replace tabs with spaces using 'expand -t 4' command
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changeset
|
297 |
+ QWord(t.Round) * t.Frac * 2 |
3f21a9dc93d0
Replace tabs with spaces using 'expand -t 4' command
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changeset
|
298 |
+ ((QWord(t.Frac) * t.Frac) shr 32); |
351 | 299 |
end; |
300 |
||
515 | 301 |
function hwSqrt(const t: hwFloat): hwFloat; |
738 | 302 |
var l, r: QWord; |
303 |
c: hwFloat; |
|
357 | 304 |
begin |
305 |
hwSqrt.isNegative:= false; |
|
744 | 306 |
|
307 |
if t.Round = 0 then |
|
308 |
begin |
|
309 |
l:= t.QWordValue; |
|
310 |
r:= $100000000 |
|
311 |
end else |
|
312 |
begin |
|
313 |
l:= $100000000; |
|
953
237fc147950c
Fix bug in hwSqrt when calculating square root of number >= 65536
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916
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|
314 |
r:= t.QWordValue div 2 + $80000000; // r:= t / 2 + 0.5 |
237fc147950c
Fix bug in hwSqrt when calculating square root of number >= 65536
unc0rr
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diff
changeset
|
315 |
if r > $FFFFFFFFFFFF then r:= $FFFFFFFFFFFF |
744 | 316 |
end; |
317 |
||
738 | 318 |
repeat |
319 |
c.QWordValue:= (l + r) div 2; |
|
320 |
if hwSqr(c).QWordValue > t.QWordValue then r:= c.QWordValue else l:= c.QWordValue |
|
321 |
until r - l <= 1; |
|
744 | 322 |
|
738 | 323 |
hwSqrt.QWordValue:= l |
357 | 324 |
end; |
325 |
||
515 | 326 |
function Distance(const dx, dy: hwFloat): hwFloat; |
351 | 327 |
begin |
738 | 328 |
Distance:= hwSqrt(hwSqr(dx) + hwSqr(dy)) |
351 | 329 |
end; |
330 |
||
515 | 331 |
function DistanceI(const dx, dy: LongInt): hwFloat; |
498 | 332 |
begin |
856 | 333 |
DistanceI:= hwSqrt(int2hwFloat(sqr(dx) + sqr(dy))) |
498 | 334 |
end; |
335 |
||
515 | 336 |
function SignAs(const num, signum: hwFloat): hwFloat; |
498 | 337 |
begin |
856 | 338 |
SignAs.QWordValue:= num.QWordValue; |
498 | 339 |
SignAs.isNegative:= signum.isNegative |
340 |
end; |
|
341 |
||
2599 | 342 |
{$INCLUDE "SinTable.inc"} |
357 | 343 |
|
515 | 344 |
function AngleSin(const Angle: Longword): hwFloat; |
351 | 345 |
begin |
1629 | 346 |
{$IFDEF DEBUGFILE} |
1640 | 347 |
TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true); |
1629 | 348 |
{$ENDIF} |
351 | 349 |
AngleSin.isNegative:= false; |
357 | 350 |
if Angle < 1024 then AngleSin.QWordValue:= SinTable[Angle] |
351 |
else AngleSin.QWordValue:= SinTable[2048 - Angle] |
|
351 | 352 |
end; |
353 |
||
515 | 354 |
function AngleCos(const Angle: Longword): hwFloat; |
351 | 355 |
begin |
1629 | 356 |
{$IFDEF DEBUGFILE} |
1640 | 357 |
TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true); |
1629 | 358 |
{$ENDIF} |
357 | 359 |
AngleCos.isNegative:= Angle > 1024; |
360 |
if Angle < 1024 then AngleCos.QWordValue:= SinTable[1024 - Angle] |
|
361 |
else AngleCos.QWordValue:= SinTable[Angle - 1024] |
|
351 | 362 |
end; |
363 |
||
364 |
{$ENDIF} |
|
365 |
||
366 |
end. |