1 // ----------------------------------------------------------------------------
3 // ----------------------------------------------------------------------------
5 #include "Explosions.h"
7 static void LetExplodeFieldSP(int tsi, int cx, int dh);
8 static int subExplodeInfotron(int tsi, int cx);
9 static int subExplodeZonk(int tsi, int cx);
11 // static char *VB_Name = "modExplosions";
12 // --- Option Explicit
14 // ==========================================================================
17 // ==========================================================================
18 int subAnimateExplosion(int si)
20 int subAnimateExplosion;
22 // int ax, bx, bl, X, Y;
25 if (LowByte(PlayField16[si]) != fiExplosion)
26 return subAnimateExplosion;
30 return subAnimateExplosion;
32 bl = HighByte(PlayField16[si]);
33 if ((bl & 0x80) != 0) // infotron explosion!
37 MovHighByte(&PlayField16[si], bl);
38 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
41 StretchedSprites.BltEx(X, Y, aniExplosion[bl]);
42 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
46 ExplosionShake = 0; // nothing explodes
49 return subAnimateExplosion;
51 loc_g_28D0: // explosion produces infotron
55 PlayField16[si] = fiInfotron;
56 MovLowByte(&ExplosionShake, 0); // nothing explodes
57 return subAnimateExplosion;
60 MovHighByte(&PlayField16[si], bl);
61 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
64 StretchedSprites.BltEx(X, Y, aniExplosionInfo + bl - 0x80);
65 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
67 return subAnimateExplosion;
68 } // subAnimateExplosion
70 // ==========================================================================
73 // ==========================================================================
75 void ExplodeFieldSP(int si)
77 // int ax, al, cx, dl, dh;
80 ax = LowByte(PlayField16[si]);
84 ExplosionShake = 1; // something explodes
90 cx = 0x801F; // produce infotrons
95 cx = 0x1F; // normal explosion
99 LetExplodeFieldSP(si - FieldWidth - 1, cx, dl);
100 LetExplodeFieldSP(si - FieldWidth, cx, dl);
101 LetExplodeFieldSP(si - FieldWidth + 1, cx, dl);
102 LetExplodeFieldSP(si - 1, cx, dl);
103 PlayField16[si] = cx;
104 LetExplodeFieldSP(si + 1, cx, dl);
105 LetExplodeFieldSP(si + FieldWidth - 1, cx, dl);
106 LetExplodeFieldSP(si + FieldWidth, cx, dl);
107 LetExplodeFieldSP(si + FieldWidth + 1, cx, dl);
110 subSoundFXExplosion();
113 static void LetExplodeFieldSP(int tsi, int cx, int dh)
117 if (tsi < (-FieldWidth))
120 al = LowByte(PlayField16[tsi]);
131 PlayField8[tsi] = dh;
132 PlayField16[tsi] = cx;
136 subExplodeZonk(tsi, cx);
140 subExplodeInfotron(tsi, cx);
144 PlayField8[tsi] = (-dh) & 0xFF;
145 PlayField16[tsi] = 0x801F;
150 PlayField8[tsi] = dh;
151 PlayField16[tsi] = cx;
155 PlayField16[tsi] = cx;
160 static int subExplodeZonk(int tsi, int cx)
162 static int subExplodeZonk;
166 ah = HighByte(PlayField16[tsi]) & 0xF0;
167 PlayField16[tsi] = cx;
172 subClearFieldDueToExplosion(tsi - FieldWidth);
173 tsi = tsi + FieldWidth;
174 if (PlayField16[tsi] == 0x9999)
175 subClearFieldDueToExplosion(tsi);
180 subClearFieldDueToExplosion(tsi + 1);
181 subClearFieldDueToExplosion(tsi + FieldWidth);
185 subClearFieldDueToExplosion(tsi - 1);
186 subClearFieldDueToExplosion(tsi + FieldWidth);
190 subClearFieldDueToExplosion(tsi - 1);
194 subClearFieldDueToExplosion(tsi + 1);
197 case 0xFF000070: // !!! 0x70; this will never be reached! ...??
198 subClearFieldDueToExplosion(tsi + FieldWidth);
202 return subExplodeZonk;
205 static int subExplodeInfotron(int tsi, int cx)
207 static int subExplodeInfotron;
211 ah = HighByte(PlayField16[tsi]) & 0xF0;
212 PlayField16[tsi] = cx;
217 subClearFieldDueToExplosion(tsi - FieldWidth);
218 tsi = tsi + FieldWidth;
219 if (PlayField16[tsi] == 0x9999)
220 subClearFieldDueToExplosion(tsi);
225 subClearFieldDueToExplosion(tsi + 1);
226 tsi = tsi + FieldWidth; // differnt from zonk version
227 if (PlayField16[tsi] == 0x9999)
228 subClearFieldDueToExplosion(tsi);
233 subClearFieldDueToExplosion(tsi - 1);
234 tsi = tsi + FieldWidth; // differnt from zonk version
235 if (PlayField16[tsi] == 0x9999)
236 subClearFieldDueToExplosion(tsi);
241 subClearFieldDueToExplosion(tsi - 1);
245 subClearFieldDueToExplosion(tsi + 1);
248 case 0xFF000070: // !!! 0x70; this will never be reached! ...??
249 subClearFieldDueToExplosion(tsi + FieldWidth);
253 return subExplodeInfotron;
254 } // subExplodeInfotron
256 int subClearFieldDueToExplosion(int si)
258 int subClearFieldDueToExplosion;
262 if (LowByte(PlayField16[si]) == fiExplosion)
263 return subClearFieldDueToExplosion;
266 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
269 StretchedSprites.BltEx(X, Y, fiSpace);
270 // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
272 return subClearFieldDueToExplosion;
273 } // subClearFieldDueToExplosion
275 int subRedDiskReleaseExplosion()
277 int subRedDiskReleaseExplosion;
281 al = RedDiskReleasePhase; // Red disk release phase
283 return subRedDiskReleaseExplosion;
285 si = RedDiskReleaseMurphyPos;
286 if (PlayField16[si] == 0) // Release red disk
287 PlayField16[si] = fiRedDisk;
289 // +++++++++++++++++++++++++++++++++++++++++
292 StretchedSprites.BltEx(X, Y, fiRedDisk);
293 // +++++++++++++++++++++++++++++++++++++++++
294 RedDiskReleasePhase = RedDiskReleasePhase + 1;
295 if (RedDiskReleasePhase >= 0x28)
297 // si = RedDiskReleaseMurphyPos ' Red disk was released here
298 ExplodeFieldSP(si); // Explode
299 RedDiskReleasePhase = 0;
302 return subRedDiskReleaseExplosion;
305 int subFollowUpExplosions()
307 int subFollowUpExplosions;
312 for (si = 0; si <= LevelMax; si++)
314 ax = ByteToInt(PlayField8[si]);
320 PlayField8[si] = ax & 0xFF;
323 PlayField16[si] = 0xFF18;
324 ExplodeFieldSP(si); // Explode
338 return subFollowUpExplosions;
339 } // subFollowUpExplosions