1 //-------------------------------------------------------------------------
2 /*
3 Copyright (C) 2010-2019 EDuke32 developers and contributors
4 Copyright (C) 2019 Nuke.YKT
5 
6 This file is part of NBlood.
7 
8 NBlood is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License version 2
10 as published by the Free Software Foundation.
11 
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 
16 See the GNU General Public License for more details.
17 
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 */
22 //-------------------------------------------------------------------------
23 #include "compat.h"
24 #include "build.h"
25 #include "pragmas.h"
26 #include "mmulti.h"
27 #include "common_game.h"
28 
29 
30 #include "actor.h"
31 #include "ai.h"
32 #include "aipod.h"
33 #include "blood.h"
34 #include "db.h"
35 #include "dude.h"
36 #include "eventq.h"
37 #include "levels.h"
38 #include "player.h"
39 #include "seq.h"
40 #include "sfx.h"
41 #include "trig.h"
42 
43 static void sub_6FF08(int, int);
44 static void sub_6FF54(int, int);
45 static void sub_6FFA0(int, int);
46 static void sub_70284(int, int);
47 static void sub_7034C(spritetype *, XSPRITE *);
48 static void sub_70380(spritetype *, XSPRITE *);
49 static void sub_704D8(spritetype *, XSPRITE *);
50 
51 static int dword_279B34 = seqRegisterClient(sub_6FFA0);
52 static int dword_279B38 = seqRegisterClient(sub_70284);
53 static int dword_279B3C = seqRegisterClient(sub_6FF08);
54 static int dword_279B40 = seqRegisterClient(sub_6FF54);
55 
56 AISTATE podIdle = { kAiStateIdle, 0, -1, 0, NULL, NULL, aiThinkTarget, NULL };
57 AISTATE pod13A600 = { kAiStateMove, 7, -1, 3600, NULL, aiMoveTurn, sub_70380, &podSearch };
58 AISTATE podSearch = { kAiStateSearch, 0, -1, 3600, NULL, aiMoveTurn, sub_7034C, &podSearch };
59 AISTATE pod13A638 = { kAiStateChase, 8, dword_279B34, 600, NULL, NULL, NULL, &podChase };
60 AISTATE podRecoil = { kAiStateRecoil, 5, -1, 0, NULL, NULL, NULL, &podChase };
61 AISTATE podChase = { kAiStateChase, 6, -1, 0, NULL, aiMoveTurn, sub_704D8, NULL };
62 AISTATE tentacleIdle = { kAiStateIdle, 0, -1, 0, NULL, NULL, aiThinkTarget, NULL };
63 AISTATE tentacle13A6A8 = { kAiStateOther, 7, dword_279B3C, 0, NULL, NULL, NULL, &tentacle13A6C4 };
64 AISTATE tentacle13A6C4 = { kAiStateOther, -1, -1, 0, NULL, NULL, NULL, &tentacleChase };
65 AISTATE tentacle13A6E0 = { kAiStateOther, 8, dword_279B40, 0, NULL, NULL, NULL, &tentacle13A6FC };
66 AISTATE tentacle13A6FC = { kAiStateOther, -1, -1, 0, NULL, NULL, NULL, &tentacleIdle };
67 AISTATE tentacle13A718 = { kAiStateOther, 8, -1, 3600, NULL, aiMoveTurn, sub_70380, &tentacleSearch };
68 AISTATE tentacleSearch = { kAiStateOther, 0, -1, 3600, NULL, aiMoveTurn, sub_7034C, NULL };
69 AISTATE tentacle13A750 = { kAiStateOther, 6, dword_279B38, 120, NULL, NULL, NULL, &tentacleChase };
70 AISTATE tentacleRecoil = { kAiStateRecoil, 5, -1, 0, NULL, NULL, NULL, &tentacleChase };
71 AISTATE tentacleChase = { kAiStateChase, 6, -1, 0, NULL, aiMoveTurn, sub_704D8, NULL };
72 
sub_6FF08(int,int nXSprite)73 static void sub_6FF08(int, int nXSprite)
74 {
75     XSPRITE *pXSprite = &xsprite[nXSprite];
76     int nSprite = pXSprite->reference;
77     sfxPlay3DSound(&sprite[nSprite], 2503, -1, 0);
78 }
79 
sub_6FF54(int,int nXSprite)80 static void sub_6FF54(int, int nXSprite)
81 {
82     XSPRITE *pXSprite = &xsprite[nXSprite];
83     int nSprite = pXSprite->reference;
84     sfxPlay3DSound(&sprite[nSprite], 2500, -1, 0);
85 }
86 
sub_6FFA0(int,int nXSprite)87 static void sub_6FFA0(int, int nXSprite)
88 {
89     XSPRITE *pXSprite = &xsprite[nXSprite];
90     int nSprite = pXSprite->reference;
91     spritetype *pSprite = &sprite[nSprite];
92     ///dassert(pXSprite->target >= 0 && pXSprite->target < kMaxSprites);
93     if (!(pXSprite->target >= 0 && pXSprite->target < kMaxSprites)) {
94         consoleSysMsg("pXSprite->target >= 0 && pXSprite->target < kMaxSprites");
95         return;
96     }
97 
98     spritetype *pTarget = &sprite[pXSprite->target];
99 
100     ///dassert(pSprite->type >= kDudeBase && pSprite->type < kDudeMax);
101     if (!(pSprite->type >= kDudeBase && pSprite->type < kDudeMax)) {
102         consoleSysMsg("pSprite->type >= kDudeBase && pSprite->type < kDudeMax");
103         return;
104     }
105     DUDEINFO *pDudeInfo = getDudeInfo(pSprite->type);
106     int x = pTarget->x-pSprite->x;
107     int y = pTarget->y-pSprite->y;
108     int dz = pTarget->z-pSprite->z;
109     x += Random2(1000);
110     y += Random2(1000);
111     int nDist = approxDist(x, y);
112     int nDist2 = nDist / 540;
113     spritetype *pMissile = NULL;
114     switch (pSprite->type)
115     {
116     case kDudePodGreen:
117         dz += 8000;
118         if (pDudeInfo->seeDist*0.1 < nDist)
119         {
120             if (Chance(0x8000))
121                 sfxPlay3DSound(pSprite, 2474, -1, 0);
122             else
123                 sfxPlay3DSound(pSprite, 2475, -1, 0);
124             pMissile = actFireThing(pSprite, 0, -8000, dz/128-14500, kThingPodGreenBall, (nDist2<<23)/120);
125         }
126         if (pMissile)
127             seqSpawn(68, 3, pMissile->extra, -1);
128         break;
129     case kDudePodFire:
130         dz += 8000;
131         if (pDudeInfo->seeDist*0.1 < nDist)
132         {
133             sfxPlay3DSound(pSprite, 2454, -1, 0);
134             pMissile = actFireThing(pSprite, 0, -8000, dz/128-14500, kThingPodFireBall, (nDist2<<23)/120);
135         }
136         if (pMissile)
137             seqSpawn(22, 3, pMissile->extra, -1);
138         break;
139     }
140     for (int i = 0; i < 4; i++)
141         sub_746D4(pSprite, 240);
142 }
143 
sub_70284(int,int nXSprite)144 static void sub_70284(int, int nXSprite)
145 {
146     XSPRITE *pXSprite = &xsprite[nXSprite];
147     int nSprite = pXSprite->reference;
148     spritetype *pSprite = &sprite[nSprite];
149     sfxPlay3DSound(pSprite, 2502, -1, 0);
150     int nDist, nBurn;
151     DAMAGE_TYPE dmgType;
152     switch (pSprite->type) {
153         case kDudeTentacleGreen:
154         default: // ???
155             nBurn = 0;
156             dmgType = kDamageBullet;
157             nDist = 50;
158             break;
159         case kDudeTentacleFire: // ???
160             nBurn = (gGameOptions.nDifficulty*120)>>2;
161             dmgType = kDamageExplode;
162             nDist = 75;
163             break;
164     }
165     sub_2A620(nSprite, pSprite->x, pSprite->y, pSprite->z, pSprite->sectnum, nDist, 1, 5*(1+gGameOptions.nDifficulty), dmgType, 2, nBurn, 0, 0);
166 }
167 
sub_7034C(spritetype * pSprite,XSPRITE * pXSprite)168 static void sub_7034C(spritetype *pSprite, XSPRITE *pXSprite)
169 {
170     aiChooseDirection(pSprite, pXSprite, pXSprite->goalAng);
171     aiThinkTarget(pSprite, pXSprite);
172 }
173 
sub_70380(spritetype * pSprite,XSPRITE * pXSprite)174 static void sub_70380(spritetype *pSprite, XSPRITE *pXSprite)
175 {
176     ///dassert(pSprite->type >= kDudeBase && pSprite->type < kDudeMax);
177     if (!(pSprite->type >= kDudeBase && pSprite->type < kDudeMax)) {
178         consoleSysMsg("pSprite->type >= kDudeBase && pSprite->type < kDudeMax");
179         return;
180     }
181 
182     DUDEINFO *pDudeInfo = getDudeInfo(pSprite->type);
183     int dx = pXSprite->targetX-pSprite->x;
184     int dy = pXSprite->targetY-pSprite->y;
185     int nAngle = getangle(dx, dy);
186     int nDist = approxDist(dx, dy);
187     aiChooseDirection(pSprite, pXSprite, nAngle);
188     if (nDist < 512 && klabs(pSprite->ang - nAngle) < pDudeInfo->periphery) {
189         switch (pSprite->type) {
190             case kDudePodGreen:
191             case kDudePodFire:
192                 aiNewState(pSprite, pXSprite, &podSearch);
193                 break;
194             case kDudeTentacleGreen:
195             case kDudeTentacleFire:
196                 aiNewState(pSprite, pXSprite, &tentacleSearch);
197                 break;
198         }
199     }
200     aiThinkTarget(pSprite, pXSprite);
201 }
202 
sub_704D8(spritetype * pSprite,XSPRITE * pXSprite)203 static void sub_704D8(spritetype *pSprite, XSPRITE *pXSprite)
204 {
205     if (pXSprite->target == -1) {
206         switch (pSprite->type) {
207             case kDudePodGreen:
208             case kDudePodFire:
209                 aiNewState(pSprite, pXSprite, &pod13A600);
210                 break;
211             case kDudeTentacleGreen:
212             case kDudeTentacleFire:
213                 aiNewState(pSprite, pXSprite, &tentacle13A718);
214                 break;
215         }
216         return;
217     }
218     ///dassert(pSprite->type >= kDudeBase && pSprite->type < kDudeMax);
219     if (!(pSprite->type >= kDudeBase && pSprite->type < kDudeMax)) {
220         consoleSysMsg("pSprite->type >= kDudeBase && pSprite->type < kDudeMax");
221         return;
222     }
223     DUDEINFO *pDudeInfo = getDudeInfo(pSprite->type);
224     ///dassert(pXSprite->target >= 0 && pXSprite->target < kMaxSprites);
225     if (!(pXSprite->target >= 0 && pXSprite->target < kMaxSprites)) {
226         consoleSysMsg("pXSprite->target >= 0 && pXSprite->target < kMaxSprites");
227         return;
228     }
229     spritetype *pTarget = &sprite[pXSprite->target];
230     XSPRITE *pXTarget = &xsprite[pTarget->extra];
231     int dx = pTarget->x-pSprite->x;
232     int dy = pTarget->y-pSprite->y;
233     aiChooseDirection(pSprite, pXSprite, getangle(dx, dy));
234     if (pXTarget->health == 0) {
235 
236         switch (pSprite->type) {
237             case kDudePodGreen:
238             case kDudePodFire:
239                 aiNewState(pSprite, pXSprite, &podSearch);
240                 break;
241             case kDudeTentacleGreen:
242             case kDudeTentacleFire:
243                 aiNewState(pSprite, pXSprite, &tentacleSearch);
244                 break;
245         }
246         return;
247     }
248     int nDist = approxDist(dx, dy);
249     if (nDist <= pDudeInfo->seeDist)
250     {
251         int nDeltaAngle = ((getangle(dx,dy)+1024-pSprite->ang)&2047)-1024;
252         int height = (pDudeInfo->eyeHeight*pSprite->yrepeat)<<2;
253         if (cansee(pTarget->x, pTarget->y, pTarget->z, pTarget->sectnum, pSprite->x, pSprite->y, pSprite->z - height, pSprite->sectnum))
254         {
255             if (nDist < pDudeInfo->seeDist && klabs(nDeltaAngle) <= pDudeInfo->periphery)
256             {
257                 aiSetTarget(pXSprite, pXSprite->target);
258                 if (klabs(nDeltaAngle) < 85 && pTarget->type != kDudePodGreen && pTarget->type != kDudePodFire) {
259                     switch (pSprite->type) {
260                         case kDudePodGreen:
261                         case kDudePodFire:
262                             aiNewState(pSprite, pXSprite, &pod13A638);
263                             break;
264                         case kDudeTentacleGreen:
265                         case kDudeTentacleFire:
266                             aiNewState(pSprite, pXSprite, &tentacle13A750);
267                             break;
268                     }
269                 }
270                 return;
271             }
272         }
273     }
274 
275     switch (pSprite->type) {
276         case kDudePodGreen:
277         case kDudePodFire:
278             aiNewState(pSprite, pXSprite, &pod13A600);
279             break;
280         case kDudeTentacleGreen:
281         case kDudeTentacleFire:
282             aiNewState(pSprite, pXSprite, &tentacle13A718);
283             break;
284     }
285     pXSprite->target = -1;
286 }
287