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1 | /* |
2 | * Elite - The New Kind. |
3 | * |
4 | * Reverse engineered from the BBC disk version of Elite. |
5 | * Additional material by C.J.Pinder. |
6 | * |
7 | * The original Elite code is (C) I.Bell & D.Braben 1984. |
8 | * This version re-engineered in C by C.J.Pinder 1999-2001. |
9 | * |
10 | * email: <christian@newkind.co.uk> |
11 | * |
12 | * |
13 | */ |
14 | |
15 | /* |
16 | * swat.c |
17 | * |
18 | * Special Weapons And Tactics. |
19 | */ |
20 | |
40471f00 |
21 | #include <stdio.h> |
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22 | #include <math.h> |
23 | #include <stdlib.h> |
24 | #include <string.h> |
25 | |
26 | #include "config.h" |
27 | #include "gfx.h" |
28 | #include "elite.h" |
29 | #include "vector.h" |
30 | #include "swat.h" |
31 | #include "shipdata.h" |
32 | #include "space.h" |
33 | #include "main.h" |
34 | #include "sound.h" |
35 | #include "random.h" |
36 | #include "trade.h" |
37 | #include "pilot.h" |
38 | |
39 | int laser_counter; |
40 | int laser; |
41 | int laser2; |
42 | int laser_x; |
43 | int laser_y; |
44 | |
45 | int ecm_active; |
46 | int missile_target; |
47 | int ecm_ours; |
48 | int in_battle; |
49 | |
50 | struct univ_object universe[MAX_UNIV_OBJECTS]; |
51 | int ship_count[NO_OF_SHIPS + 1]; /* many */ |
52 | |
53 | |
54 | int initial_flags[NO_OF_SHIPS + 1] = |
55 | { |
56 | 0, // NULL, |
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57 | FLG_TARGET, // missile |
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58 | 0, // coriolis |
59 | FLG_SLOW | FLG_FLY_TO_PLANET, // escape |
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60 | FLG_INACTIVE | FLG_TARGET, // alloy |
61 | FLG_INACTIVE | FLG_TARGET, // cargo |
62 | FLG_INACTIVE | FLG_TARGET, // boulder |
63 | FLG_INACTIVE | FLG_TARGET, // asteroid |
64 | FLG_INACTIVE | FLG_TARGET, // rock |
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65 | FLG_FLY_TO_PLANET | FLG_SLOW, // shuttle |
66 | FLG_FLY_TO_PLANET | FLG_SLOW, // transporter |
67 | 0, // cobra3 |
68 | 0, // python |
69 | 0, // boa |
70 | FLG_SLOW, // anaconda |
71 | FLG_SLOW, // hermit |
72 | FLG_BOLD | FLG_POLICE, // viper |
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73 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // sidewinder |
74 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // mamba |
75 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // krait |
76 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // adder |
77 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // gecko |
78 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // cobra1 |
79 | FLG_SLOW | FLG_ANGRY | FLG_TARGET, // worm |
80 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // cobra3 |
81 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // asp2 |
82 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // python |
83 | FLG_POLICE, // fer_de_lance |
84 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // moray |
85 | FLG_BOLD | FLG_ANGRY | FLG_TARGET, // thargoid |
86 | FLG_ANGRY | FLG_TARGET, // thargon |
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87 | FLG_ANGRY, // constrictor |
88 | FLG_POLICE | FLG_CLOAKED, // cougar |
89 | 0 // dodec |
90 | }; |
91 | |
92 | |
93 | |
94 | |
95 | void clear_universe (void) |
96 | { |
97 | int i; |
98 | |
99 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
100 | universe[i].type = 0; |
101 | |
102 | for (i = 0; i <= NO_OF_SHIPS; i++) |
103 | ship_count[i] = 0; |
104 | |
105 | in_battle = 0; |
106 | } |
107 | |
108 | |
109 | int add_new_ship (int ship_type, int x, int y, int z, struct vector *rotmat, int rotx, int rotz) |
110 | { |
111 | int i; |
112 | |
113 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
114 | { |
115 | if (universe[i].type == 0) |
116 | { |
117 | universe[i].type = ship_type; |
118 | universe[i].location.x = x; |
119 | universe[i].location.y = y; |
120 | universe[i].location.z = z; |
121 | |
122 | universe[i].distance = sqrt(x*x + y*y + z*z); |
123 | |
124 | universe[i].rotmat[0] = rotmat[0]; |
125 | universe[i].rotmat[1] = rotmat[1]; |
126 | universe[i].rotmat[2] = rotmat[2]; |
127 | |
128 | universe[i].rotx = rotx; |
129 | universe[i].rotz = rotz; |
130 | |
131 | universe[i].velocity = 0; |
132 | universe[i].acceleration = 0; |
133 | universe[i].bravery = 0; |
134 | universe[i].target = 0; |
135 | |
136 | universe[i].flags = initial_flags[ship_type]; |
137 | |
138 | if ((ship_type != SHIP_PLANET) && (ship_type != SHIP_SUN)) |
139 | { |
140 | universe[i].energy = ship_list[ship_type]->energy; |
141 | universe[i].missiles = ship_list[ship_type]->missiles; |
142 | ship_count[ship_type]++; |
143 | } |
144 | |
145 | return i; |
146 | } |
147 | } |
148 | |
149 | return -1; |
150 | } |
151 | |
152 | |
153 | |
154 | |
155 | void check_missiles (int un) |
156 | { |
157 | int i; |
158 | |
159 | if (missile_target == un) |
160 | { |
161 | missile_target = MISSILE_UNARMED; |
162 | info_message ("Target Lost"); |
163 | } |
164 | |
165 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
166 | { |
167 | if ((universe[i].type == SHIP_MISSILE) && (universe[i].target == un)) |
168 | universe[i].flags |= FLG_DEAD; |
169 | } |
170 | } |
171 | |
172 | |
173 | void remove_ship (int un) |
174 | { |
175 | int type; |
176 | Matrix rotmat; |
177 | int px,py,pz; |
178 | |
179 | type = universe[un].type; |
180 | |
181 | if (type == 0) |
182 | return; |
183 | |
184 | if (type > 0) |
185 | ship_count[type]--; |
186 | |
187 | universe[un].type = 0; |
188 | |
189 | check_missiles (un); |
190 | |
191 | if ((type == SHIP_CORIOLIS) || (type == SHIP_DODEC)) |
192 | { |
193 | set_init_matrix (rotmat); |
194 | px = universe[un].location.x; |
195 | py = universe[un].location.y; |
196 | pz = universe[un].location.z; |
197 | |
198 | py &= 0xFFFF; |
199 | py |= 0x60000; |
200 | |
201 | add_new_ship (SHIP_SUN, px, py, pz, rotmat, 0, 0); |
202 | } |
203 | } |
204 | |
205 | |
206 | void add_new_station (double sx, double sy, double sz, Matrix rotmat) |
207 | { |
208 | int station; |
209 | |
210 | station = (current_planet_data.techlevel >= 10) ? SHIP_DODEC : SHIP_CORIOLIS; |
211 | universe[1].type = 0; |
212 | add_new_ship (station, sx, sy, sz, rotmat, 0, -127); |
213 | } |
214 | |
215 | |
216 | |
217 | |
218 | void reset_weapons (void) |
219 | { |
220 | laser_temp = 0; |
221 | laser_counter = 0; |
222 | laser = 0; |
223 | ecm_active = 0; |
224 | missile_target = MISSILE_UNARMED; |
225 | } |
226 | |
227 | |
228 | void launch_enemy (int un, int type, int flags, int bravery) |
229 | { |
230 | int newship; |
231 | struct univ_object *ns; |
232 | |
233 | newship = add_new_ship (type, universe[un].location.x, universe[un].location.y, |
234 | universe[un].location.z, universe[un].rotmat, |
235 | universe[un].rotx, universe[un].rotz); |
236 | |
237 | if (newship == -1) |
238 | { |
239 | return; |
240 | } |
241 | |
242 | ns = &universe[newship]; |
243 | |
244 | if ((universe[un].type == SHIP_CORIOLIS) || (universe[un].type == SHIP_DODEC)) |
245 | { |
246 | ns->velocity = 32; |
247 | ns->location.x += ns->rotmat[2].x * 2; |
248 | ns->location.y += ns->rotmat[2].y * 2; |
249 | ns->location.z += ns->rotmat[2].z * 2; |
250 | } |
251 | |
252 | ns->flags |= flags; |
253 | ns->rotz /= 2; |
254 | ns->rotz *= 2; |
255 | ns->bravery = bravery; |
256 | |
257 | if ((type == SHIP_CARGO) || (type == SHIP_ALLOY) || (type == SHIP_ROCK)) |
258 | { |
259 | ns->rotz = ((rand255() * 2) & 255) - 128; |
260 | ns->rotx = ((rand255() * 2) & 255) - 128; |
261 | ns->velocity = rand255() & 15; |
262 | } |
263 | } |
264 | |
265 | |
266 | void launch_loot (int un, int loot) |
267 | { |
268 | int i,cnt; |
269 | |
270 | if (loot == SHIP_ROCK) |
271 | { |
272 | cnt = rand255() & 3; |
273 | } |
274 | else |
275 | { |
276 | cnt = rand255(); |
277 | if (cnt >= 128) |
278 | return; |
279 | |
280 | cnt &= ship_list[universe[un].type]->max_loot; |
281 | cnt &= 15; |
282 | } |
283 | |
284 | for (i = 0; i < cnt; i++) |
285 | { |
286 | launch_enemy (un, loot, 0,0); |
287 | } |
288 | } |
289 | |
290 | |
291 | |
292 | |
293 | int in_target (int type, double x, double y, double z) |
294 | { |
295 | double size; |
296 | |
297 | if (z < 0) |
298 | return 0; |
299 | |
300 | size = ship_list[type]->size; |
301 | |
302 | return ((x*x + y*y) <= size); |
303 | } |
304 | |
305 | |
306 | |
307 | void make_angry (int un) |
308 | { |
309 | int type; |
310 | int flags; |
311 | |
312 | type = universe[un].type; |
313 | flags = universe[un].flags; |
314 | |
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315 | if (flags & FLG_INACTIVE) { |
316 | universe[un].flags |= FLG_TACTICAL; |
317 | return; |
318 | } |
319 | |
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320 | if ((type == SHIP_CORIOLIS) || (type == SHIP_DODEC)) |
321 | { |
322 | universe[un].flags |= FLG_ANGRY; |
323 | return; |
324 | } |
fe23bc52 |
325 | |
326 | if (!(universe[un].flags & FLG_TARGET) && |
327 | (universe[1].type == SHIP_CORIOLIS || |
328 | universe[1].type == SHIP_DODEC)) |
329 | universe[1].flags |= FLG_ANGRY; |
330 | |
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331 | if (type > SHIP_ROCK) |
332 | { |
333 | universe[un].rotx = 4; |
334 | universe[un].acceleration = 2; |
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335 | universe[un].flags |= FLG_ANGRY | FLG_TACTICAL; |
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336 | } |
337 | } |
338 | |
339 | |
340 | void explode_object (int un) |
341 | { |
342 | |
343 | cmdr.score++; |
344 | |
345 | if ((cmdr.score & 255) == 0) |
346 | info_message ("Right On Commander!"); |
347 | |
348 | snd_play_sample (SND_EXPLODE); |
349 | universe[un].flags |= FLG_DEAD; |
350 | |
351 | if (universe[un].type == SHIP_CONSTRICTOR) |
352 | cmdr.mission = 2; |
353 | } |
354 | |
355 | |
356 | void check_target (int un, struct univ_object *flip) |
357 | { |
358 | struct univ_object *univ; |
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359 | char buf[80]; |
360 | |
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361 | univ = &universe[un]; |
362 | |
363 | if (in_target (univ->type, flip->location.x, flip->location.y, flip->location.z)) |
364 | { |
365 | if ((missile_target == MISSILE_ARMED) && (univ->type >= 0)) |
366 | { |
367 | missile_target = un; |
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368 | sprintf(buf, "Target Locked (%s)", |
369 | ship_list[univ->type]->name); |
370 | info_message (buf); |
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371 | snd_play_sample (SND_BEEP); |
372 | } |
373 | |
374 | if (laser) |
375 | { |
376 | snd_play_sample (SND_HIT_ENEMY); |
377 | |
378 | if ((univ->type != SHIP_CORIOLIS) && (univ->type != SHIP_DODEC)) |
379 | { |
380 | if ((univ->type == SHIP_CONSTRICTOR) || (univ->type == SHIP_COUGAR)) |
381 | { |
382 | if (laser == (MILITARY_LASER & 127)) |
383 | univ->energy -= laser / 4; |
384 | } |
385 | else |
386 | { |
387 | univ->energy -= laser; |
388 | } |
389 | } |
390 | |
391 | if (univ->energy <= 0) |
392 | { |
393 | explode_object (un); |
394 | |
395 | if (univ->type == SHIP_ASTEROID) |
396 | { |
397 | if (laser == (MINING_LASER & 127)) |
398 | launch_loot (un, SHIP_ROCK); |
399 | } |
400 | else |
401 | { |
402 | launch_loot (un, SHIP_ALLOY); |
403 | launch_loot (un, SHIP_CARGO); |
404 | } |
405 | } |
406 | |
407 | make_angry (un); |
408 | } |
409 | } |
410 | } |
411 | |
412 | |
413 | |
414 | void activate_ecm (int ours) |
415 | { |
416 | if (ecm_active == 0) |
417 | { |
418 | ecm_active = 32; |
419 | ecm_ours = ours; |
420 | snd_play_sample (SND_ECM); |
421 | } |
422 | } |
423 | |
424 | |
425 | void time_ecm (void) |
426 | { |
427 | if (ecm_active != 0) |
428 | { |
429 | ecm_active--; |
430 | if (ecm_ours) |
431 | decrease_energy (-1); |
432 | } |
433 | } |
434 | |
435 | |
436 | void arm_missile (void) |
437 | { |
438 | if ((cmdr.missiles != 0) && (missile_target == MISSILE_UNARMED)) |
439 | missile_target = MISSILE_ARMED; |
440 | } |
441 | |
442 | |
443 | void unarm_missile (void) |
444 | { |
445 | missile_target = MISSILE_UNARMED; |
446 | snd_play_sample (SND_BOOP); |
447 | } |
448 | |
449 | void fire_missile (void) |
450 | { |
451 | int newship; |
452 | struct univ_object *ns; |
453 | Matrix rotmat; |
454 | |
455 | if (missile_target < 0) |
456 | return; |
457 | |
458 | set_init_matrix (rotmat); |
459 | rotmat[2].z = 1.0; |
460 | rotmat[0].x = -1.0; |
461 | |
462 | newship = add_new_ship (SHIP_MISSILE, 0, -28, 14, rotmat, 0, 0); |
463 | |
464 | if (newship == -1) |
465 | { |
466 | info_message ("Missile Jammed"); |
467 | return; |
468 | } |
469 | |
470 | ns = &universe[newship]; |
471 | |
472 | ns->velocity = flight_speed * 2; |
1a8abebd |
473 | ns->flags |= FLG_TACTICAL; |
84bbd123 |
474 | ns->target = missile_target; |
475 | |
476 | if (universe[missile_target].type > SHIP_ROCK) |
477 | universe[missile_target].flags |= FLG_ANGRY; |
478 | |
479 | cmdr.missiles--; |
480 | missile_target = MISSILE_UNARMED; |
481 | |
482 | snd_play_sample (SND_MISSILE); |
483 | } |
484 | |
485 | |
486 | |
487 | void track_object (struct univ_object *ship, double direction, Vector nvec) |
488 | { |
489 | double dir; |
490 | int rat; |
491 | double rat2; |
492 | |
493 | rat = 3; |
494 | rat2 = 0.111; |
495 | |
496 | dir = vector_dot_product (&nvec, &ship->rotmat[1]); |
497 | |
498 | if (direction < -0.861) |
499 | { |
500 | ship->rotx = (dir < 0) ? 7 : -7; |
501 | ship->rotz = 0; |
502 | return; |
503 | } |
504 | |
505 | ship->rotx = 0; |
506 | |
507 | if ((fabs(dir) * 2) >= rat2) |
508 | { |
509 | ship->rotx = (dir < 0) ? rat : -rat; |
510 | } |
511 | |
512 | if (abs(ship->rotz) < 16) |
513 | { |
514 | dir = vector_dot_product (&nvec, &ship->rotmat[0]); |
515 | |
516 | ship->rotz = 0; |
517 | |
518 | if ((fabs(dir) * 2) > rat2) |
519 | { |
520 | ship->rotz = (dir < 0) ? rat : -rat; |
521 | |
522 | if (ship->rotx < 0) |
523 | ship->rotz = -ship->rotz; |
524 | } |
525 | } |
526 | } |
527 | |
528 | |
529 | |
530 | void missile_tactics (int un) |
531 | { |
532 | struct univ_object *missile; |
533 | struct univ_object *target; |
534 | Vector vec; |
535 | Vector nvec; |
536 | double direction; |
537 | double cnt2 = 0.223; |
538 | |
539 | missile = &universe[un]; |
540 | |
541 | if (ecm_active) |
542 | { |
543 | snd_play_sample (SND_EXPLODE); |
544 | missile->flags |= FLG_DEAD; |
545 | return; |
546 | } |
547 | |
548 | if (missile->target == 0) |
549 | { |
550 | if (missile->distance < 256) |
551 | { |
552 | missile->flags |= FLG_DEAD; |
553 | snd_play_sample (SND_EXPLODE); |
554 | damage_ship (250, missile->location.z >= 0.0); |
555 | return; |
556 | } |
557 | |
558 | vec.x = missile->location.x; |
559 | vec.y = missile->location.y; |
560 | vec.z = missile->location.z; |
561 | } |
562 | else |
563 | { |
564 | target = &universe[missile->target]; |
565 | |
566 | vec.x = missile->location.x - target->location.x; |
567 | vec.y = missile->location.y - target->location.y; |
568 | vec.z = missile->location.z - target->location.z; |
569 | |
570 | if ((fabs(vec.x) < 256) && (fabs(vec.y) < 256) && (fabs(vec.z) < 256)) |
571 | { |
572 | missile->flags |= FLG_DEAD; |
573 | |
574 | if ((target->type != SHIP_CORIOLIS) && (target->type != SHIP_DODEC)) |
575 | explode_object (missile->target); |
576 | else |
577 | snd_play_sample (SND_EXPLODE); |
578 | |
579 | return; |
580 | } |
581 | |
582 | if ((rand255() < 16) && (target->flags & FLG_HAS_ECM)) |
583 | { |
584 | activate_ecm (0); |
585 | return; |
586 | } |
1a8abebd |
587 | } |
588 | |
589 | if ((rand255() < 16) && |
590 | (ship_count[SHIP_CORIOLIS] || ship_count[SHIP_DODEC])) { |
591 | activate_ecm(0); |
592 | return; |
593 | } |
84bbd123 |
594 | |
595 | nvec = unit_vector(&vec); |
596 | direction = vector_dot_product (&nvec, &missile->rotmat[2]); |
597 | nvec.x = -nvec.x; |
598 | nvec.y = -nvec.y; |
599 | nvec.z = -nvec.z; |
600 | direction = -direction; |
601 | |
602 | track_object (missile, direction, nvec); |
603 | |
604 | if (direction <= -0.167) |
605 | { |
606 | missile->acceleration = -2; |
607 | return; |
608 | } |
609 | |
610 | if (direction >= cnt2) |
611 | { |
612 | missile->acceleration = 3; |
613 | return; |
614 | } |
615 | |
616 | if (missile->velocity < 6) |
617 | missile->acceleration = 3; |
618 | else |
619 | if (rand255() >= 200) |
620 | missile->acceleration = -2; |
621 | return; |
622 | } |
623 | |
624 | |
625 | |
626 | void launch_shuttle (void) |
627 | { |
628 | int type; |
629 | |
630 | if ((ship_count[SHIP_TRANSPORTER] != 0) || |
631 | (ship_count[SHIP_SHUTTLE] != 0) || |
632 | (rand255() < 253) || (auto_pilot)) |
633 | return; |
634 | |
635 | type = rand255() & 1 ? SHIP_SHUTTLE : SHIP_TRANSPORTER; |
636 | launch_enemy (1, type, FLG_HAS_ECM | FLG_FLY_TO_PLANET, 113); |
637 | } |
638 | |
639 | |
640 | void tactics (int un) |
641 | { |
642 | int type; |
643 | int energy; |
644 | int maxeng; |
645 | int flags; |
646 | struct univ_object *ship; |
647 | Vector nvec; |
648 | double cnt2 = 0.223; |
649 | double direction; |
650 | int attacking; |
651 | |
652 | ship = &universe[un]; |
653 | type = ship->type; |
654 | flags = ship->flags; |
655 | |
656 | if ((type == SHIP_PLANET) || (type == SHIP_SUN)) |
657 | return; |
658 | |
659 | if (flags & FLG_DEAD) |
660 | return; |
661 | |
662 | if (flags & FLG_INACTIVE) |
663 | return; |
664 | |
665 | if (type == SHIP_MISSILE) |
666 | { |
667 | if (flags & FLG_ANGRY) |
668 | missile_tactics (un); |
669 | return; |
670 | } |
671 | |
672 | if (((un ^ mcount) & 7) != 0) |
673 | return; |
674 | |
675 | if ((type == SHIP_CORIOLIS) || (type == SHIP_DODEC)) |
676 | { |
677 | if (flags & FLG_ANGRY) |
678 | { |
679 | if ((rand() & 255) < 240) |
680 | return; |
681 | |
682 | if (ship_count[SHIP_VIPER] >= 4) |
683 | return; |
684 | |
685 | launch_enemy (un, SHIP_VIPER, FLG_ANGRY | FLG_HAS_ECM, 113); |
686 | return; |
687 | } |
688 | |
689 | launch_shuttle (); |
690 | return; |
691 | } |
692 | |
693 | if (type == SHIP_HERMIT) |
694 | { |
695 | if (rand255() > 200) |
696 | { |
697 | launch_enemy (un, SHIP_SIDEWINDER + (rand255() & 3), FLG_ANGRY | FLG_HAS_ECM, 113); |
1a8abebd |
698 | ship->flags |= FLG_INACTIVE | FLG_TARGET; |
84bbd123 |
699 | } |
700 | |
701 | return; |
702 | } |
703 | |
704 | |
705 | if (ship->energy < ship_list[type]->energy) |
706 | ship->energy++; |
707 | |
708 | if ((type == SHIP_THARGLET) && (ship_count[SHIP_THARGOID] == 0)) |
709 | { |
1a8abebd |
710 | ship->flags &= FLG_TARGET | FLG_TACTICAL; |
84bbd123 |
711 | ship->velocity /= 2; |
712 | return; |
713 | } |
714 | |
715 | if (flags & FLG_SLOW) |
716 | { |
717 | if (rand255() > 50) |
718 | return; |
719 | } |
720 | |
721 | if (flags & FLG_POLICE) |
722 | { |
723 | if (cmdr.legal_status >= 64) |
724 | { |
fe23bc52 |
725 | flags |= FLG_ANGRY | FLG_TARGET; |
84bbd123 |
726 | ship->flags = flags; |
727 | } |
728 | } |
729 | |
730 | if ((flags & FLG_ANGRY) == 0) |
731 | { |
732 | if ((flags & FLG_FLY_TO_PLANET) || (flags & FLG_FLY_TO_STATION)) |
733 | { |
734 | auto_pilot_ship (&universe[un]); |
735 | } |
736 | |
737 | return; |
738 | } |
739 | |
740 | |
741 | /* If we get to here then the ship is angry so start attacking... */ |
742 | |
743 | if (ship_count[SHIP_CORIOLIS] || ship_count[SHIP_DODEC]) |
744 | { |
745 | if ((flags & FLG_BOLD) == 0) |
746 | ship->bravery = 0; |
747 | } |
748 | |
749 | |
750 | if (type == SHIP_ANACONDA) |
751 | { |
752 | if (rand255() > 200) |
753 | { |
754 | launch_enemy (un, rand255() > 100 ? SHIP_WORM : SHIP_SIDEWINDER, |
755 | FLG_ANGRY | FLG_HAS_ECM, 113); |
756 | return; |
757 | } |
758 | } |
759 | |
760 | |
761 | if (rand255() >= 250) |
762 | { |
763 | ship->rotz = rand255() | 0x68; |
764 | if (ship->rotz > 127) |
765 | ship->rotz = -(ship->rotz & 127); |
766 | } |
767 | |
768 | maxeng = ship_list[type]->energy; |
769 | energy = ship->energy; |
770 | |
771 | if (energy < (maxeng / 2)) |
772 | { |
773 | if ((energy < (maxeng / 8)) && (rand255() > 230) && (type != SHIP_THARGOID)) |
774 | { |
775 | ship->flags &= ~FLG_ANGRY; |
776 | ship->flags |= FLG_INACTIVE; |
777 | launch_enemy (un, SHIP_ESCAPE_CAPSULE, 0, 126); |
778 | return; |
779 | } |
780 | |
781 | if ((ship->missiles != 0) && (ecm_active == 0) && |
782 | (ship->missiles >= (rand255() & 31))) |
783 | { |
784 | ship->missiles--; |
1a8abebd |
785 | ship->flags |= FLG_TACTICAL; |
84bbd123 |
786 | if (type == SHIP_THARGOID) |
787 | launch_enemy (un, SHIP_THARGLET, FLG_ANGRY, ship->bravery); |
788 | else |
789 | { |
790 | launch_enemy (un, SHIP_MISSILE, FLG_ANGRY, 126); |
1a8abebd |
791 | ship->flags |= FLG_HOSTILE; |
84bbd123 |
792 | info_message ("INCOMING MISSILE"); |
793 | } |
794 | return; |
795 | } |
796 | } |
797 | |
798 | nvec = unit_vector(&universe[un].location); |
799 | direction = vector_dot_product (&nvec, &ship->rotmat[2]); |
800 | |
801 | if ((ship->distance < 8192) && (direction <= -0.833) && |
802 | (ship_list[type]->laser_strength != 0)) |
803 | { |
804 | if (direction <= -0.917) |
1a8abebd |
805 | ship->flags |= FLG_FIRING | FLG_HOSTILE | FLG_TACTICAL; |
84bbd123 |
806 | |
807 | if (direction <= -0.972) |
808 | { |
809 | damage_ship (ship_list[type]->laser_strength, ship->location.z >= 0.0); |
810 | ship->acceleration--; |
811 | if (((ship->location.z >= 0.0) && (front_shield == 0)) || |
812 | ((ship->location.z < 0.0) && (aft_shield == 0))) |
813 | snd_play_sample (SND_INCOMMING_FIRE_2); |
814 | else |
815 | snd_play_sample (SND_INCOMMING_FIRE_1); |
816 | } |
817 | else |
818 | { |
819 | nvec.x = -nvec.x; |
820 | nvec.y = -nvec.y; |
821 | nvec.z = -nvec.z; |
822 | direction = -direction; |
823 | track_object (&universe[un], direction, nvec); |
824 | } |
825 | |
826 | // if ((fabs(ship->location.z) < 768) && (ship->bravery <= ((rand255() & 127) | 64))) |
827 | if (fabs(ship->location.z) < 768) |
828 | { |
829 | ship->rotx = rand255() & 0x87; |
830 | if (ship->rotx > 127) |
831 | ship->rotx = -(ship->rotx & 127); |
832 | |
833 | ship->acceleration = 3; |
834 | return; |
835 | } |
836 | |
837 | if (ship->distance < 8192) |
838 | ship->acceleration = -1; |
839 | else |
840 | ship->acceleration = 3; |
841 | return; |
842 | } |
843 | |
844 | attacking = 0; |
845 | |
846 | if ((fabs(ship->location.z) >= 768) || |
847 | (fabs(ship->location.x) >= 512) || |
848 | (fabs(ship->location.y) >= 512)) |
849 | { |
850 | if (ship->bravery > (rand255() & 127)) |
851 | { |
852 | attacking = 1; |
853 | nvec.x = -nvec.x; |
854 | nvec.y = -nvec.y; |
855 | nvec.z = -nvec.z; |
856 | direction = -direction; |
857 | } |
858 | } |
859 | |
860 | track_object (&universe[un], direction, nvec); |
861 | |
862 | if ((attacking == 1) && (ship->distance < 2048)) |
863 | { |
864 | if (direction >= cnt2) |
865 | { |
866 | ship->acceleration = -1; |
867 | return; |
868 | } |
869 | |
870 | if (ship->velocity < 6) |
871 | ship->acceleration = 3; |
872 | else |
873 | if (rand255() >= 200) |
874 | ship->acceleration = -1; |
875 | return; |
876 | } |
877 | |
878 | if (direction <= -0.167) |
879 | { |
880 | ship->acceleration = -1; |
881 | return; |
882 | } |
883 | |
884 | if (direction >= cnt2) |
885 | { |
886 | ship->acceleration = 3; |
887 | return; |
888 | } |
889 | |
890 | if (ship->velocity < 6) |
891 | ship->acceleration = 3; |
892 | else |
893 | if (rand255() >= 200) |
894 | ship->acceleration = -1; |
895 | } |
896 | |
897 | |
898 | void draw_laser_lines (void) |
899 | { |
900 | if (wireframe) |
901 | { |
902 | gfx_draw_colour_line (32 * GFX_SCALE, GFX_VIEW_BY, laser_x, laser_y, GFX_COL_WHITE); |
903 | gfx_draw_colour_line (48 * GFX_SCALE, GFX_VIEW_BY, laser_x, laser_y, GFX_COL_WHITE); |
904 | gfx_draw_colour_line (208 * GFX_SCALE, GFX_VIEW_BY, laser_x, laser_y, GFX_COL_WHITE); |
905 | gfx_draw_colour_line (224 * GFX_SCALE, GFX_VIEW_BY, laser_x, laser_y, GFX_COL_WHITE); |
906 | } |
907 | else |
908 | { |
909 | gfx_draw_triangle (32 * GFX_SCALE, GFX_VIEW_BY, laser_x, laser_y, 48 * GFX_SCALE, GFX_VIEW_BY, GFX_COL_RED); |
910 | gfx_draw_triangle (208 * GFX_SCALE, GFX_VIEW_BY, laser_x, laser_y, 224 * GFX_SCALE, GFX_VIEW_BY, GFX_COL_RED); |
911 | } |
912 | } |
913 | |
914 | |
915 | int fire_laser (void) |
916 | { |
917 | if ((laser_counter == 0) && (laser_temp < 242)) |
918 | { |
919 | switch (current_screen) |
920 | { |
921 | case SCR_FRONT_VIEW: |
922 | laser = cmdr.front_laser; |
923 | break; |
924 | |
925 | case SCR_REAR_VIEW: |
926 | laser = cmdr.rear_laser; |
927 | break; |
928 | |
929 | case SCR_RIGHT_VIEW: |
930 | laser = cmdr.right_laser; |
931 | break; |
932 | |
933 | case SCR_LEFT_VIEW: |
934 | laser = cmdr.left_laser; |
935 | break; |
936 | |
937 | default: |
938 | laser = 0; |
939 | } |
940 | |
941 | if (laser != 0) |
942 | { |
943 | laser_counter = (laser > 127) ? 0 : (laser & 0xFA); |
944 | laser &= 127; |
945 | laser2 = laser; |
946 | |
947 | snd_play_sample (SND_PULSE); |
948 | laser_temp += 8; |
949 | if (energy > 1) |
950 | energy--; |
951 | |
952 | laser_x = ((rand() & 3) + 128 - 2) * GFX_SCALE; |
953 | laser_y = ((rand() & 3) + 96 - 2) * GFX_SCALE; |
954 | |
955 | return 2; |
956 | } |
957 | } |
958 | |
959 | return 0; |
960 | } |
961 | |
962 | |
963 | void cool_laser (void) |
964 | { |
965 | laser = 0; |
966 | |
967 | if (laser_temp > 0) |
968 | laser_temp--; |
969 | |
970 | if (laser_counter > 0) |
971 | laser_counter--; |
972 | |
973 | if (laser_counter > 0) |
974 | laser_counter--; |
975 | } |
976 | |
977 | |
978 | int create_other_ship (int type) |
979 | { |
980 | Matrix rotmat; |
981 | int x,y,z; |
982 | int newship; |
983 | |
984 | set_init_matrix (rotmat); |
985 | |
986 | z = 12000; |
987 | x = 1000 + (randint() & 8191); |
988 | y = 1000 + (randint() & 8191); |
989 | |
990 | if (rand255() > 127) |
991 | x = -x; |
992 | if (rand255() > 127) |
993 | y = -y; |
994 | |
995 | newship = add_new_ship (type, x, y, z, rotmat, 0, 0); |
996 | |
997 | return newship; |
998 | } |
999 | |
1000 | |
1001 | void create_thargoid (void) |
1002 | { |
1003 | int newship; |
1004 | |
1005 | newship = create_other_ship (SHIP_THARGOID); |
1006 | if (newship != -1) |
1007 | { |
1a8abebd |
1008 | universe[newship].flags = FLG_ANGRY | FLG_HAS_ECM | FLG_TARGET; |
84bbd123 |
1009 | universe[newship].bravery = 113; |
1010 | |
1011 | if (rand255() > 64) |
1a8abebd |
1012 | launch_enemy (newship, SHIP_THARGLET, FLG_ANGRY | FLG_HAS_ECM, |
1013 | 96); |
1014 | in_battle = 1; |
84bbd123 |
1015 | } |
1016 | } |
1017 | |
1018 | |
1019 | |
1020 | void create_cougar (void) |
1021 | { |
1022 | int newship; |
1023 | |
1024 | if (ship_count[SHIP_COUGAR] != 0) |
1025 | return; |
1026 | |
1027 | newship = create_other_ship (SHIP_COUGAR); |
1028 | if (newship != -1) |
1029 | { |
1030 | universe[newship].flags = FLG_HAS_ECM; // | FLG_CLOAKED; |
1031 | universe[newship].bravery = 121; |
1032 | universe[newship].velocity = 18; |
1033 | } |
1034 | } |
1035 | |
1036 | |
1037 | |
1038 | void create_trader (void) |
1039 | { |
1040 | int newship; |
1041 | int rnd; |
1042 | int type; |
1043 | |
1044 | type = SHIP_COBRA3 + (rand255() & 3); |
1045 | |
1046 | newship = create_other_ship (type); |
1047 | |
1048 | if (newship != -1) |
1049 | { |
1050 | universe[newship].rotmat[2].z = -1.0; |
1051 | universe[newship].rotz = rand255() & 7; |
1052 | |
1053 | rnd = rand255(); |
1054 | universe[newship].velocity = (rnd & 31) | 16; |
1055 | universe[newship].bravery = rnd / 2; |
1056 | |
1057 | if (rnd & 1) |
1058 | universe[newship].flags |= FLG_HAS_ECM; |
1059 | |
ea32c703 |
1060 | if (rnd > (type == SHIP_ANACONDA ? 250 : 220)) |
1a8abebd |
1061 | universe[newship].flags |= FLG_ANGRY | FLG_TARGET; |
84bbd123 |
1062 | } |
1063 | } |
1064 | |
1065 | |
1066 | void create_lone_hunter (void) |
1067 | { |
1068 | int rnd; |
1069 | int type; |
1070 | int newship; |
1071 | |
1072 | if ((cmdr.mission == 1) && (cmdr.galaxy_number == 1) && |
1073 | (docked_planet.d == 144) && (docked_planet.b == 33) && |
1074 | (ship_count[SHIP_CONSTRICTOR] == 0)) |
1075 | { |
1076 | type = SHIP_CONSTRICTOR; |
1077 | } |
1078 | else |
1079 | { |
1080 | rnd = rand255(); |
1081 | type = SHIP_COBRA3_LONE + (rnd & 3) + (rnd > 127); |
1082 | } |
1083 | |
1084 | newship = create_other_ship (type); |
1085 | |
1086 | if (newship != -1) |
1087 | { |
1a8abebd |
1088 | // universe[newship].flags = FLG_ANGRY; |
84bbd123 |
1089 | if ((rand255() > 200) || (type == SHIP_CONSTRICTOR)) |
1090 | universe[newship].flags |= FLG_HAS_ECM; |
1091 | |
1092 | universe[newship].bravery = ((rand255() * 2) | 64) & 127; |
1a8abebd |
1093 | if (type == SHIP_FER_DE_LANCE) { |
1094 | if (rand255() > 160) |
1095 | universe[newship].flags |= FLG_ANGRY | FLG_TARGET; |
1096 | else { |
1097 | universe[newship].rotmat[2].z = -1.0; |
1098 | universe[newship].rotz = rand255() & 7; |
1099 | rnd = rand255(); |
1100 | universe[newship].velocity = (rnd & 31) | 16; |
1101 | } |
1102 | } |
1103 | |
1104 | if (universe[newship].flags & FLG_ANGRY) |
1105 | in_battle = 1; |
84bbd123 |
1106 | } |
1107 | } |
1108 | |
1109 | |
1110 | |
1111 | /* Check for a random asteroid encounter... */ |
1112 | |
1113 | void check_for_asteroids (void) |
1114 | { |
1115 | int newship; |
1116 | int type; |
1117 | |
1118 | if ((rand255() >= 35) || (ship_count[SHIP_ASTEROID] >= 3)) |
1119 | return; |
1120 | |
1121 | if (rand255() > 253) |
1122 | type = SHIP_HERMIT; |
1123 | else |
1124 | type = SHIP_ASTEROID; |
1125 | |
1126 | newship = create_other_ship (type); |
1127 | |
1128 | if (newship != -1) |
1129 | { |
1130 | // universe[newship].velocity = (rand255() & 31) | 16; |
1131 | universe[newship].velocity = 8; |
1132 | universe[newship].rotz = rand255() > 127 ? -127 : 127; |
1133 | universe[newship].rotx = 16; |
1134 | } |
1135 | } |
1136 | |
1137 | |
1138 | |
1139 | /* If we've been a bad boy then send the cops after us... */ |
1140 | |
1141 | void check_for_cops (void) |
1142 | { |
1143 | int newship; |
1144 | int offense; |
1145 | |
1146 | offense = carrying_contraband() * 2; |
1147 | if (ship_count[SHIP_VIPER] == 0) |
1148 | offense |= cmdr.legal_status; |
1149 | |
1150 | if (rand255() >= offense) |
1151 | return; |
1152 | |
1153 | newship = create_other_ship (SHIP_VIPER); |
1154 | |
1155 | if (newship != -1) |
1156 | { |
fe23bc52 |
1157 | universe[newship].flags |= FLG_ANGRY | FLG_TARGET; |
84bbd123 |
1158 | if (rand255() > 245) |
1159 | universe[newship].flags |= FLG_HAS_ECM; |
1160 | |
1161 | universe[newship].bravery = ((rand255() * 2) | 64) & 127; |
1162 | } |
1163 | } |
1164 | |
1165 | |
1166 | void check_for_others (void) |
1167 | { |
1168 | int x,y,z; |
1169 | int newship; |
1170 | Matrix rotmat; |
1171 | int gov; |
1172 | int rnd; |
1173 | int type; |
1174 | int i; |
1175 | |
1176 | gov = current_planet_data.government; |
1177 | rnd = rand255(); |
1178 | |
1179 | if ((gov != 0) && ((rnd >= 90) || ((rnd & 7) < gov))) |
1180 | return; |
1181 | |
1182 | if (rand255() < 100) |
1183 | { |
1184 | create_lone_hunter(); |
1185 | return; |
1186 | } |
1187 | |
1188 | /* Pack hunters... */ |
1189 | |
1190 | set_init_matrix (rotmat); |
1191 | |
1192 | z = 12000; |
1193 | x = 1000 + (randint() & 8191); |
1194 | y = 1000 + (randint() & 8191); |
1195 | |
1196 | if (rand255() > 127) |
1197 | x = -x; |
1198 | if (rand255() > 127) |
1199 | y = -y; |
1200 | |
1201 | rnd = rand255() & 3; |
1202 | |
1203 | for (i = 0; i <= rnd; i++) |
1204 | { |
1205 | type = SHIP_SIDEWINDER + (rand255() & rand255() & 7); |
1206 | newship = add_new_ship (type, x, y, z, rotmat, 0, 0); |
1207 | if (newship != -1) |
1208 | { |
1a8abebd |
1209 | universe[newship].flags |= FLG_ANGRY | FLG_TARGET; |
84bbd123 |
1210 | if (rand255() > 245) |
1211 | universe[newship].flags |= FLG_HAS_ECM; |
1212 | |
1213 | universe[newship].bravery = ((rand255() * 2) | 64) & 127; |
1214 | in_battle++; |
1215 | } |
1216 | } |
1217 | |
1218 | } |
1219 | |
1220 | |
1221 | void random_encounter (void) |
1222 | { |
1223 | if ((ship_count[SHIP_CORIOLIS] != 0) || (ship_count[SHIP_DODEC] != 0)) |
1224 | return; |
1225 | |
1226 | if (rand255() == 136) |
1227 | { |
1228 | if (((int)(universe[0].location.z) & 0x3e) != 0) |
1229 | create_thargoid (); |
1230 | else |
1231 | create_cougar(); |
1232 | |
1233 | return; |
1234 | } |
1235 | |
1236 | if ((rand255() & 7) == 0) |
1237 | { |
1238 | create_trader(); |
1239 | return; |
1240 | } |
1241 | |
1242 | check_for_asteroids(); |
1243 | |
1244 | check_for_cops(); |
1245 | |
1246 | if (ship_count[SHIP_VIPER] != 0) |
1247 | return; |
1248 | |
1249 | if (in_battle) |
1250 | return; |
1251 | |
1252 | if ((cmdr.mission == 5) && (rand255() >= 200)) |
1253 | create_thargoid (); |
1254 | |
1255 | check_for_others(); |
1256 | } |
1257 | |
1258 | |
1259 | void abandon_ship (void) |
1260 | { |
1261 | int i; |
1262 | |
1263 | cmdr.escape_pod = 0; |
1264 | cmdr.legal_status = 0; |
1265 | cmdr.fuel = myship.max_fuel; |
1266 | |
1267 | for (i = 0; i < NO_OF_STOCK_ITEMS; i++) |
1268 | cmdr.current_cargo[i] = 0; |
1269 | |
1270 | snd_play_sample (SND_DOCK); |
1271 | dock_player(); |
1272 | current_screen = SCR_BREAK_PATTERN; |
1273 | } |
1274 | |