84bbd123 |
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 | * space.c |
17 | * |
18 | * This module handles all the flight system and management of the space universe. |
19 | */ |
20 | |
21 | #include <stdio.h> |
22 | #include <string.h> |
23 | #include <math.h> |
24 | #include <stdlib.h> |
25 | |
26 | #include "vector.h" |
27 | |
28 | #include "alg_data.h" |
29 | |
30 | #include "config.h" |
31 | #include "elite.h" |
4c1c1a84 |
32 | #include "keyboard.h" |
84bbd123 |
33 | #include "gfx.h" |
34 | #include "docked.h" |
35 | #include "intro.h" |
36 | #include "shipdata.h" |
37 | #include "shipface.h" |
38 | #include "space.h" |
39 | #include "threed.h" |
40 | #include "sound.h" |
41 | #include "main.h" |
42 | #include "swat.h" |
43 | #include "random.h" |
44 | #include "trade.h" |
45 | #include "stars.h" |
46 | #include "pilot.h" |
47 | |
48 | extern int flight_climb; |
49 | extern int flight_roll; |
50 | extern int flight_speed; |
51 | |
52 | struct galaxy_seed destination_planet; |
53 | int hyper_ready; |
54 | int hyper_countdown; |
55 | char hyper_name[16]; |
56 | int hyper_distance; |
57 | int hyper_galactic; |
58 | |
59 | |
60 | |
61 | |
62 | |
63 | |
64 | void rotate_x_first (double *a, double *b, int direction) |
65 | { |
66 | double fx,ux; |
67 | |
68 | fx = *a; |
69 | ux = *b; |
70 | |
71 | if (direction < 0) |
72 | { |
73 | *a = fx - (fx / 512) + (ux / 19); |
74 | *b = ux - (ux / 512) - (fx / 19); |
75 | } |
76 | else |
77 | { |
78 | *a = fx - (fx / 512) - (ux / 19); |
79 | *b = ux - (ux / 512) + (fx / 19); |
80 | } |
81 | } |
82 | |
83 | |
84 | void rotate_vec (struct vector *vec, double alpha, double beta) |
85 | { |
86 | double x,y,z; |
87 | |
88 | x = vec->x; |
89 | y = vec->y; |
90 | z = vec->z; |
91 | |
92 | y = y - alpha * x; |
93 | x = x + alpha * y; |
94 | y = y - beta * z; |
95 | z = z + beta * y; |
96 | |
97 | vec->x = x; |
98 | vec->y = y; |
99 | vec->z = z; |
100 | } |
101 | |
102 | |
103 | /* |
104 | * Update an objects location in the universe. |
105 | */ |
106 | |
107 | void move_univ_object (struct univ_object *obj) |
108 | { |
109 | double x,y,z; |
110 | double k2; |
111 | double alpha; |
112 | double beta; |
113 | int rotx,rotz; |
114 | double speed; |
115 | |
116 | alpha = flight_roll / 256.0; |
117 | beta = flight_climb / 256.0; |
118 | |
119 | x = obj->location.x; |
120 | y = obj->location.y; |
121 | z = obj->location.z; |
122 | |
123 | if (!(obj->flags & FLG_DEAD)) |
124 | { |
125 | if (obj->velocity != 0) |
126 | { |
127 | speed = obj->velocity; |
128 | speed *= 1.5; |
129 | x += obj->rotmat[2].x * speed; |
130 | y += obj->rotmat[2].y * speed; |
131 | z += obj->rotmat[2].z * speed; |
132 | } |
133 | |
134 | if (obj->acceleration != 0) |
135 | { |
136 | obj->velocity += obj->acceleration; |
137 | obj->acceleration = 0; |
138 | if (obj->velocity > ship_list[obj->type]->velocity) |
139 | obj->velocity = ship_list[obj->type]->velocity; |
140 | |
141 | if (obj->velocity <= 0) |
142 | obj->velocity = 1; |
143 | } |
144 | } |
145 | |
146 | k2 = y - alpha * x; |
147 | z = z + beta * k2; |
148 | y = k2 - z * beta; |
149 | x = x + alpha * y; |
150 | |
151 | z = z - flight_speed; |
152 | |
153 | obj->location.x = x; |
154 | obj->location.y = y; |
155 | obj->location.z = z; |
156 | |
157 | obj->distance = sqrt (x*x + y*y + z*z); |
158 | |
159 | if (obj->type == SHIP_PLANET) |
160 | beta = 0.0; |
161 | |
162 | rotate_vec (&obj->rotmat[2], alpha, beta); |
163 | rotate_vec (&obj->rotmat[1], alpha, beta); |
164 | rotate_vec (&obj->rotmat[0], alpha, beta); |
165 | |
166 | if (obj->flags & FLG_DEAD) |
167 | return; |
168 | |
169 | |
170 | rotx = obj->rotx; |
171 | rotz = obj->rotz; |
172 | |
173 | /* If necessary rotate the object around the X axis... */ |
174 | |
175 | if (rotx != 0) |
176 | { |
177 | rotate_x_first (&obj->rotmat[2].x, &obj->rotmat[1].x, rotx); |
178 | rotate_x_first (&obj->rotmat[2].y, &obj->rotmat[1].y, rotx); |
179 | rotate_x_first (&obj->rotmat[2].z, &obj->rotmat[1].z, rotx); |
180 | |
181 | if ((rotx != 127) && (rotx != -127)) |
182 | obj->rotx -= (rotx < 0) ? -1 : 1; |
183 | } |
184 | |
185 | |
186 | /* If necessary rotate the object around the Z axis... */ |
187 | |
188 | if (rotz != 0) |
189 | { |
190 | rotate_x_first (&obj->rotmat[0].x, &obj->rotmat[1].x, rotz); |
191 | rotate_x_first (&obj->rotmat[0].y, &obj->rotmat[1].y, rotz); |
192 | rotate_x_first (&obj->rotmat[0].z, &obj->rotmat[1].z, rotz); |
193 | |
194 | if ((rotz != 127) && (rotz != -127)) |
195 | obj->rotz -= (rotz < 0) ? -1 : 1; |
196 | } |
197 | |
198 | |
199 | /* Orthonormalize the rotation matrix... */ |
200 | |
201 | tidy_matrix (obj->rotmat); |
202 | } |
203 | |
204 | |
205 | /* |
206 | * Dock the player into the space station. |
207 | */ |
208 | |
209 | void dock_player (void) |
210 | { |
211 | disengage_auto_pilot(); |
212 | docked = 1; |
213 | flight_speed = 0; |
214 | flight_roll = 0; |
215 | flight_climb = 0; |
216 | front_shield = 255; |
217 | aft_shield = 255; |
218 | energy = 255; |
219 | myship.altitude = 255; |
220 | myship.cabtemp = 30; |
221 | reset_weapons(); |
222 | } |
223 | |
224 | |
225 | /* |
226 | * Check if we are correctly aligned to dock. |
227 | */ |
228 | |
229 | int is_docking (int sn) |
230 | { |
231 | struct vector vec; |
232 | double fz; |
233 | double ux; |
234 | |
4c1c1a84 |
235 | if (universe[sn].flags & FLG_ANGRY) |
236 | return (0); |
237 | |
84bbd123 |
238 | if (auto_pilot) // Don't want it to kill anyone! |
239 | return 1; |
240 | |
241 | fz = universe[sn].rotmat[2].z; |
242 | |
243 | if (fz > -0.90) |
244 | return 0; |
245 | |
246 | vec = unit_vector (&universe[sn].location); |
247 | |
248 | if (vec.z < 0.927) |
249 | return 0; |
250 | |
251 | ux = universe[sn].rotmat[1].x; |
252 | if (ux < 0) |
253 | ux = -ux; |
254 | |
255 | if (ux < 0.84) |
256 | return 0; |
257 | |
258 | return 1; |
259 | } |
260 | |
261 | |
262 | /* |
263 | * Game Over... |
264 | */ |
265 | |
266 | void do_game_over (void) |
267 | { |
268 | snd_play_sample (SND_GAMEOVER); |
269 | game_over = 1; |
270 | } |
271 | |
272 | |
273 | void update_altitude (void) |
274 | { |
275 | double x,y,z; |
276 | double dist; |
277 | |
278 | myship.altitude = 255; |
279 | |
280 | if (witchspace) |
281 | return; |
282 | |
283 | x = fabs(universe[0].location.x); |
284 | y = fabs(universe[0].location.y); |
285 | z = fabs(universe[0].location.z); |
286 | |
287 | if ((x > 65535) || (y > 65535) || (z > 65535)) |
288 | return; |
289 | |
290 | x /= 256; |
291 | y /= 256; |
292 | z /= 256; |
293 | |
294 | dist = (x * x) + (y * y) + (z * z); |
295 | |
296 | if (dist > 65535) |
297 | return; |
298 | |
299 | dist -= 9472; |
300 | if (dist < 1) |
301 | { |
302 | myship.altitude = 0; |
303 | do_game_over (); |
304 | return; |
305 | } |
306 | |
307 | dist = sqrt (dist); |
308 | if (dist < 1) |
309 | { |
310 | myship.altitude = 0; |
311 | do_game_over (); |
312 | return; |
313 | } |
314 | |
315 | myship.altitude = dist; |
316 | } |
317 | |
318 | |
319 | void update_cabin_temp (void) |
320 | { |
321 | int x,y,z; |
322 | int dist; |
323 | |
324 | myship.cabtemp = 30; |
325 | |
326 | if (witchspace) |
327 | return; |
328 | |
329 | if (ship_count[SHIP_CORIOLIS] || ship_count[SHIP_DODEC]) |
330 | return; |
331 | |
332 | x = abs((int)universe[1].location.x); |
333 | y = abs((int)universe[1].location.y); |
334 | z = abs((int)universe[1].location.z); |
335 | |
336 | if ((x > 65535) || (y > 65535) || (z > 65535)) |
337 | return; |
338 | |
339 | x /= 256; |
340 | y /= 256; |
341 | z /= 256; |
342 | |
343 | dist = ((x * x) + (y * y) + (z * z)) / 256; |
344 | |
345 | if (dist > 255) |
346 | return; |
347 | |
348 | dist ^= 255; |
349 | |
350 | myship.cabtemp = dist + 30; |
351 | |
352 | if (myship.cabtemp > 255) |
353 | { |
354 | myship.cabtemp = 255; |
355 | do_game_over (); |
356 | return; |
357 | } |
358 | |
359 | if ((myship.cabtemp < 224) || (cmdr.fuel_scoop == 0)) |
360 | return; |
361 | |
362 | cmdr.fuel += flight_speed / 2; |
363 | if (cmdr.fuel > myship.max_fuel) |
364 | cmdr.fuel = myship.max_fuel; |
365 | |
366 | info_message ("Fuel Scoop On"); |
367 | } |
368 | |
369 | |
370 | |
371 | /* |
372 | * Regenerate the shields and the energy banks. |
373 | */ |
374 | |
375 | void regenerate_shields (void) |
376 | { |
377 | if (energy > 127) |
378 | { |
379 | if (front_shield < 255) |
380 | { |
381 | front_shield++; |
382 | energy--; |
383 | } |
384 | |
385 | if (aft_shield < 255) |
386 | { |
387 | aft_shield++; |
388 | energy--; |
389 | } |
390 | } |
391 | |
392 | energy++; |
393 | energy += cmdr.energy_unit; |
394 | if (energy > 255) |
395 | energy = 255; |
396 | } |
397 | |
398 | |
399 | void decrease_energy (int amount) |
400 | { |
401 | energy += amount; |
402 | |
403 | if (energy <= 0) |
404 | do_game_over(); |
405 | } |
406 | |
407 | |
408 | /* |
409 | * Deplete the shields. Drain the energy banks if the shields fail. |
410 | */ |
411 | |
412 | void damage_ship (int damage, int front) |
413 | { |
414 | int shield; |
415 | |
416 | if (damage <= 0) /* sanity check */ |
417 | return; |
418 | |
419 | shield = front ? front_shield : aft_shield; |
420 | |
421 | shield -= damage; |
422 | if (shield < 0) |
423 | { |
424 | decrease_energy (shield); |
425 | shield = 0; |
426 | } |
427 | |
428 | if (front) |
429 | front_shield = shield; |
430 | else |
431 | aft_shield = shield; |
432 | } |
433 | |
434 | |
435 | |
436 | |
437 | void make_station_appear (void) |
438 | { |
439 | double px,py,pz; |
440 | double sx,sy,sz; |
441 | Vector vec; |
442 | Matrix rotmat; |
443 | |
444 | px = universe[0].location.x; |
445 | py = universe[0].location.y; |
446 | pz = universe[0].location.z; |
447 | |
448 | vec.x = (rand() & 32767) - 16384; |
449 | vec.y = (rand() & 32767) - 16384; |
450 | vec.z = rand() & 32767; |
451 | |
452 | vec = unit_vector (&vec); |
453 | |
454 | sx = px - vec.x * 65792; |
455 | sy = py - vec.y * 65792; |
456 | sz = pz - vec.z * 65792; |
457 | |
458 | // set_init_matrix (rotmat); |
459 | |
460 | rotmat[0].x = 1.0; |
461 | rotmat[0].y = 0.0; |
462 | rotmat[0].z = 0.0; |
463 | |
464 | rotmat[1].x = vec.x; |
465 | rotmat[1].y = vec.z; |
466 | rotmat[1].z = -vec.y; |
467 | |
468 | rotmat[2].x = vec.x; |
469 | rotmat[2].y = vec.y; |
470 | rotmat[2].z = vec.z; |
471 | |
472 | tidy_matrix (rotmat); |
473 | |
474 | add_new_station (sx, sy, sz, rotmat); |
475 | } |
476 | |
477 | |
478 | |
479 | void check_docking (int i) |
480 | { |
481 | if (is_docking(i)) |
482 | { |
483 | snd_play_sample (SND_DOCK); |
484 | dock_player(); |
485 | current_screen = SCR_BREAK_PATTERN; |
486 | return; |
487 | } |
488 | |
489 | if (flight_speed >= 5) |
490 | { |
491 | do_game_over(); |
492 | return; |
493 | } |
494 | |
495 | flight_speed = 1; |
496 | damage_ship (5, universe[i].location.z > 0); |
497 | snd_play_sample (SND_CRASH); |
498 | } |
499 | |
500 | |
501 | void switch_to_view (struct univ_object *flip) |
502 | { |
503 | double tmp; |
504 | |
505 | if ((current_screen == SCR_REAR_VIEW) || |
506 | (current_screen == SCR_GAME_OVER)) |
507 | { |
508 | flip->location.x = -flip->location.x; |
509 | flip->location.z = -flip->location.z; |
510 | |
511 | flip->rotmat[0].x = -flip->rotmat[0].x; |
512 | flip->rotmat[0].z = -flip->rotmat[0].z; |
513 | |
514 | flip->rotmat[1].x = -flip->rotmat[1].x; |
515 | flip->rotmat[1].z = -flip->rotmat[1].z; |
516 | |
517 | flip->rotmat[2].x = -flip->rotmat[2].x; |
518 | flip->rotmat[2].z = -flip->rotmat[2].z; |
519 | return; |
520 | } |
521 | |
522 | |
523 | if (current_screen == SCR_LEFT_VIEW) |
524 | { |
525 | tmp = flip->location.x; |
526 | flip->location.x = flip->location.z; |
527 | flip->location.z = -tmp; |
528 | |
529 | if (flip->type < 0) |
530 | return; |
531 | |
532 | tmp = flip->rotmat[0].x; |
533 | flip->rotmat[0].x = flip->rotmat[0].z; |
534 | flip->rotmat[0].z = -tmp; |
535 | |
536 | tmp = flip->rotmat[1].x; |
537 | flip->rotmat[1].x = flip->rotmat[1].z; |
538 | flip->rotmat[1].z = -tmp; |
539 | |
540 | tmp = flip->rotmat[2].x; |
541 | flip->rotmat[2].x = flip->rotmat[2].z; |
542 | flip->rotmat[2].z = -tmp; |
543 | return; |
544 | } |
545 | |
546 | if (current_screen == SCR_RIGHT_VIEW) |
547 | { |
548 | tmp = flip->location.x; |
549 | flip->location.x = -flip->location.z; |
550 | flip->location.z = tmp; |
551 | |
552 | if (flip->type < 0) |
553 | return; |
554 | |
555 | tmp = flip->rotmat[0].x; |
556 | flip->rotmat[0].x = -flip->rotmat[0].z; |
557 | flip->rotmat[0].z = tmp; |
558 | |
559 | tmp = flip->rotmat[1].x; |
560 | flip->rotmat[1].x = -flip->rotmat[1].z; |
561 | flip->rotmat[1].z = tmp; |
562 | |
563 | tmp = flip->rotmat[2].x; |
564 | flip->rotmat[2].x = -flip->rotmat[2].z; |
565 | flip->rotmat[2].z = tmp; |
566 | |
567 | } |
568 | } |
569 | |
570 | |
571 | /* |
572 | * Update all the objects in the universe and render them. |
573 | */ |
574 | |
575 | void update_universe (void) |
576 | { |
577 | int i; |
578 | int type; |
579 | int bounty; |
580 | char str[80]; |
581 | struct univ_object flip; |
582 | |
583 | |
584 | gfx_start_render(); |
585 | |
586 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
587 | { |
588 | type = universe[i].type; |
589 | |
590 | if (type != 0) |
591 | { |
592 | if (universe[i].flags & FLG_REMOVE) |
593 | { |
4c1c1a84 |
594 | if (!(universe[i].flags & FLG_TARGET)) |
84bbd123 |
595 | cmdr.legal_status |= 64; |
596 | |
597 | bounty = ship_list[type]->bounty; |
598 | |
599 | if ((bounty != 0) && (!witchspace)) |
600 | { |
601 | cmdr.credits += bounty; |
1a8abebd |
602 | sprintf (str, "Bounty: %d.%d CR", bounty / 10, bounty % 10); |
84bbd123 |
603 | info_message (str); |
604 | } |
605 | |
606 | remove_ship (i); |
607 | continue; |
608 | } |
609 | |
610 | if ((detonate_bomb) && ((universe[i].flags & FLG_DEAD) == 0) && |
611 | (type != SHIP_PLANET) && (type != SHIP_SUN) && |
612 | (type != SHIP_CONSTRICTOR) && (type != SHIP_COUGAR) && |
613 | (type != SHIP_CORIOLIS) && (type != SHIP_DODEC)) |
614 | { |
615 | snd_play_sample (SND_EXPLODE); |
616 | universe[i].flags |= FLG_DEAD; |
617 | } |
618 | |
619 | if ((current_screen != SCR_INTRO_ONE) && |
620 | (current_screen != SCR_INTRO_TWO) && |
621 | (current_screen != SCR_GAME_OVER) && |
622 | (current_screen != SCR_ESCAPE_POD)) |
623 | { |
624 | tactics (i); |
625 | } |
626 | |
627 | move_univ_object (&universe[i]); |
628 | |
629 | flip = universe[i]; |
630 | switch_to_view (&flip); |
631 | |
632 | if (type == SHIP_PLANET) |
633 | { |
634 | if ((ship_count[SHIP_CORIOLIS] == 0) && |
635 | (ship_count[SHIP_DODEC] == 0) && |
636 | (universe[i].distance < 65792)) // was 49152 |
637 | { |
638 | make_station_appear(); |
639 | } |
640 | |
641 | draw_ship (&flip); |
642 | continue; |
643 | } |
644 | |
645 | if (type == SHIP_SUN) |
646 | { |
647 | draw_ship (&flip); |
648 | continue; |
649 | } |
650 | |
651 | |
652 | if (universe[i].distance < 170) |
653 | { |
654 | if ((type == SHIP_CORIOLIS) || (type == SHIP_DODEC)) |
655 | check_docking (i); |
656 | else |
657 | scoop_item(i); |
658 | |
659 | continue; |
660 | } |
661 | |
662 | if (universe[i].distance > 57344) |
663 | { |
664 | remove_ship (i); |
665 | continue; |
666 | } |
667 | |
668 | draw_ship (&flip); |
669 | |
670 | universe[i].flags = flip.flags; |
671 | universe[i].exp_seed = flip.exp_seed; |
672 | universe[i].exp_delta = flip.exp_delta; |
673 | |
674 | universe[i].flags &= ~FLG_FIRING; |
675 | |
676 | if (universe[i].flags & FLG_DEAD) |
677 | continue; |
678 | |
679 | check_target (i, &flip); |
680 | } |
681 | } |
682 | |
683 | gfx_finish_render(); |
684 | detonate_bomb = 0; |
685 | } |
686 | |
687 | |
688 | |
689 | |
690 | /* |
691 | * Update the scanner and draw all the lollipops. |
692 | */ |
693 | |
694 | void update_scanner (void) |
695 | { |
696 | int i; |
697 | int x,y,z; |
698 | int x1,y1,y2; |
699 | int colour; |
700 | |
701 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
702 | { |
703 | if ((universe[i].type <= 0) || |
704 | (universe[i].flags & FLG_DEAD) || |
705 | (universe[i].flags & FLG_CLOAKED)) |
706 | continue; |
707 | |
1a8abebd |
708 | x = universe[i].location.x * scanner_zoom / 256; |
709 | y = universe[i].location.y * scanner_zoom / 256; |
710 | z = universe[i].location.z * scanner_zoom / 256; |
84bbd123 |
711 | |
712 | x1 = x; |
713 | y1 = -z / 4; |
714 | y2 = y1 - y / 2; |
715 | |
716 | if ((y2 < -28) || (y2 > 28) || |
717 | (x1 < -50) || (x1 > 50)) |
718 | continue; |
719 | |
720 | x1 += scanner_cx; |
721 | y1 += scanner_cy; |
722 | y2 += scanner_cy; |
723 | |
724 | colour = (universe[i].flags & FLG_HOSTILE) ? GFX_COL_YELLOW_5 : GFX_COL_WHITE; |
725 | |
726 | switch (universe[i].type) |
727 | { |
728 | case SHIP_MISSILE: |
729 | colour = 137; |
730 | break; |
731 | |
732 | case SHIP_DODEC: |
733 | case SHIP_CORIOLIS: |
734 | colour = GFX_COL_GREEN_1; |
735 | break; |
736 | |
737 | case SHIP_VIPER: |
738 | colour = 252; |
739 | break; |
740 | } |
741 | |
742 | gfx_draw_colour_line (x1+2, y2, x1-3, y2, colour); |
743 | gfx_draw_colour_line (x1+2, y2+1, x1-3, y2+1, colour); |
744 | gfx_draw_colour_line (x1+2, y2+2, x1-3, y2+2, colour); |
745 | gfx_draw_colour_line (x1+2, y2+3, x1-3, y2+3, colour); |
746 | |
747 | |
748 | gfx_draw_colour_line (x1, y1, x1, y2, colour); |
749 | gfx_draw_colour_line (x1+1, y1, x1+1, y2, colour); |
750 | gfx_draw_colour_line (x1+2, y1, x1+2, y2, colour); |
751 | } |
752 | } |
753 | |
754 | |
755 | /* |
756 | * Update the compass which tracks the space station / planet. |
757 | */ |
758 | |
759 | void update_compass (void) |
760 | { |
761 | struct vector dest; |
762 | int compass_x; |
763 | int compass_y; |
764 | int un = 0; |
765 | |
766 | if (witchspace) |
767 | return; |
768 | |
769 | if (ship_count[SHIP_CORIOLIS] || ship_count[SHIP_DODEC]) |
770 | un = 1; |
771 | |
772 | dest = unit_vector (&universe[un].location); |
773 | |
774 | compass_x = compass_centre_x + (dest.x * 16); |
775 | compass_y = compass_centre_y + (dest.y * -16); |
776 | |
777 | if (dest.z < 0) |
778 | { |
779 | gfx_draw_sprite (IMG_RED_DOT, compass_x, compass_y); |
780 | } |
781 | else |
782 | { |
783 | gfx_draw_sprite (IMG_GREEN_DOT, compass_x, compass_y); |
784 | } |
785 | |
786 | } |
787 | |
788 | |
789 | /* |
790 | * Display the speed bar. |
791 | */ |
792 | |
793 | void display_speed (void) |
794 | { |
795 | int sx,sy; |
796 | int i; |
797 | int len; |
798 | int colour; |
799 | |
800 | sx = 417; |
801 | sy = 384 + 9; |
802 | |
803 | len = ((flight_speed * 64) / myship.max_speed) - 1; |
804 | |
805 | colour = (flight_speed > (myship.max_speed * 2 / 3)) ? GFX_COL_DARK_RED : GFX_COL_GOLD; |
806 | |
807 | for (i = 0; i < 6; i++) |
808 | { |
809 | gfx_draw_colour_line (sx, sy + i, sx + len, sy + i, colour); |
810 | } |
811 | } |
812 | |
813 | |
814 | /* |
815 | * Draw an indicator bar. |
816 | * Used for shields and energy banks. |
817 | */ |
818 | |
819 | void display_dial_bar (int len, int x, int y) |
820 | { |
821 | int i = 0; |
822 | |
823 | gfx_draw_colour_line (x, y + 384, x + len, y + 384, GFX_COL_GOLD); |
824 | i++; |
825 | gfx_draw_colour_line (x, y + i + 384, x + len, y + i + 384, GFX_COL_GOLD); |
826 | |
827 | for (i = 2; i < 7; i++) |
828 | gfx_draw_colour_line (x, y + i + 384, x + len, y + i + 384, GFX_COL_YELLOW_1); |
829 | |
830 | gfx_draw_colour_line (x, y + i + 384, x + len, y + i + 384, GFX_COL_DARK_RED); |
831 | } |
832 | |
833 | |
834 | /* |
835 | * Display the current shield strengths. |
836 | */ |
837 | |
838 | void display_shields (void) |
839 | { |
840 | if (front_shield > 3) |
841 | display_dial_bar (front_shield / 4, 31, 7); |
842 | |
843 | if (aft_shield > 3) |
844 | display_dial_bar (aft_shield / 4, 31, 23); |
845 | } |
846 | |
847 | |
848 | void display_altitude (void) |
849 | { |
850 | if (myship.altitude > 3) |
851 | display_dial_bar (myship.altitude / 4, 31, 92); |
852 | } |
853 | |
854 | void display_cabin_temp (void) |
855 | { |
856 | if (myship.cabtemp > 3) |
857 | display_dial_bar (myship.cabtemp / 4, 31, 60); |
858 | } |
859 | |
860 | |
861 | void display_laser_temp (void) |
862 | { |
863 | if (laser_temp > 0) |
864 | display_dial_bar (laser_temp / 4, 31, 76); |
865 | } |
866 | |
867 | |
868 | /* |
869 | * Display the energy banks. |
870 | */ |
871 | |
872 | void display_energy (void) |
873 | { |
874 | int e1,e2,e3,e4; |
875 | |
876 | e1 = energy > 64 ? 64 : energy; |
877 | e2 = energy > 128 ? 64 : energy - 64; |
878 | e3 = energy > 192 ? 64 : energy - 128; |
879 | e4 = energy - 192; |
880 | |
881 | if (e4 > 0) |
882 | display_dial_bar (e4, 416, 61); |
883 | |
884 | if (e3 > 0) |
885 | display_dial_bar (e3, 416, 79); |
886 | |
887 | if (e2 > 0) |
888 | display_dial_bar (e2, 416, 97); |
889 | |
890 | if (e1 > 0) |
891 | display_dial_bar (e1, 416, 115); |
892 | } |
893 | |
894 | |
895 | |
896 | void display_flight_roll (void) |
897 | { |
898 | int sx,sy; |
899 | int i; |
900 | int pos; |
901 | |
902 | sx = 416; |
903 | sy = 384 + 9 + 14; |
904 | |
905 | pos = sx - ((flight_roll * 28) / myship.max_roll); |
906 | pos += 32; |
907 | |
908 | for (i = 0; i < 4; i++) |
909 | { |
910 | gfx_draw_colour_line (pos + i, sy, pos + i, sy + 7, GFX_COL_GOLD); |
911 | } |
912 | } |
913 | |
914 | void display_flight_climb (void) |
915 | { |
916 | int sx,sy; |
917 | int i; |
918 | int pos; |
919 | |
920 | sx = 416; |
921 | sy = 384 + 9 + 14 + 16; |
922 | |
923 | pos = sx + ((flight_climb * 28) / myship.max_climb); |
924 | pos += 32; |
925 | |
926 | for (i = 0; i < 4; i++) |
927 | { |
928 | gfx_draw_colour_line (pos + i, sy, pos + i, sy + 7, GFX_COL_GOLD); |
929 | } |
930 | } |
931 | |
932 | |
933 | void display_fuel (void) |
934 | { |
935 | if (cmdr.fuel > 0) |
936 | display_dial_bar ((cmdr.fuel * 64) / myship.max_fuel, 31, 44); |
937 | } |
938 | |
939 | |
940 | void display_missiles (void) |
941 | { |
942 | int nomiss; |
943 | int x,y; |
944 | |
945 | if (cmdr.missiles == 0) |
946 | return; |
947 | |
948 | nomiss = cmdr.missiles > 4 ? 4 : cmdr.missiles; |
949 | |
950 | x = (4 - nomiss) * 16 + 35; |
951 | y = 113 + 385; |
952 | |
953 | if (missile_target != MISSILE_UNARMED) |
954 | { |
955 | gfx_draw_sprite ((missile_target < 0) ? IMG_MISSILE_YELLOW : |
956 | IMG_MISSILE_RED, x, y); |
957 | x += 16; |
958 | nomiss--; |
959 | } |
960 | |
961 | for (; nomiss > 0; nomiss--) |
962 | { |
963 | gfx_draw_sprite (IMG_MISSILE_GREEN, x, y); |
964 | x += 16; |
965 | } |
966 | } |
967 | |
968 | |
1a8abebd |
969 | |
970 | void display_condition(void) |
971 | { |
972 | static const int cc[] = { GFX_COL_BLACK, GFX_COL_GREEN_1, GFX_COL_YELLOW_1, |
973 | GFX_COL_RED, GFX_COL_RED }; |
974 | int c = cc[condition]; |
975 | if (condition == COND_ALERT && (mcount & 4)) |
976 | c = GFX_COL_BLACK; |
977 | gfx_draw_filled_circle(condition_x, condition_y, condition_r, c); |
978 | } |
979 | |
84bbd123 |
980 | void update_console (void) |
981 | { |
84bbd123 |
982 | gfx_draw_scanner(); |
983 | |
984 | display_speed(); |
985 | display_flight_climb(); |
986 | display_flight_roll(); |
987 | display_shields(); |
988 | display_altitude(); |
989 | display_energy(); |
990 | display_cabin_temp(); |
991 | display_laser_temp(); |
992 | display_fuel(); |
993 | display_missiles(); |
1a8abebd |
994 | update_condition(); |
84bbd123 |
995 | |
1a8abebd |
996 | if (docked) { |
997 | gfx_set_clip_region (0, 0, 512, 512); |
998 | return; |
999 | } |
84bbd123 |
1000 | |
1001 | update_scanner(); |
1002 | update_compass(); |
1a8abebd |
1003 | display_condition(); |
1004 | |
1005 | { |
1006 | char buf[5]; |
1007 | sprintf(buf, "x%d", scanner_zoom); |
1008 | gfx_display_text(zoom_x, zoom_y, buf); |
1009 | } |
84bbd123 |
1010 | |
1011 | if (ship_count[SHIP_CORIOLIS] || ship_count[SHIP_DODEC]) |
1012 | gfx_draw_sprite (IMG_BIG_S, 387, 490); |
1013 | |
1014 | if (ecm_active) |
1015 | gfx_draw_sprite (IMG_BIG_E, 115, 490); |
1a8abebd |
1016 | |
1017 | gfx_set_clip_region (0, 0, 512, 512); |
84bbd123 |
1018 | } |
1019 | |
1020 | void increase_flight_roll (void) |
1021 | { |
1022 | if (flight_roll < myship.max_roll) |
1023 | flight_roll++; |
1024 | } |
1025 | |
1026 | |
1027 | void decrease_flight_roll (void) |
1028 | { |
1029 | if (flight_roll > -myship.max_roll) |
1030 | flight_roll--; |
1031 | } |
1032 | |
1033 | |
1034 | void increase_flight_climb (void) |
1035 | { |
1036 | if (flight_climb < myship.max_climb) |
1037 | flight_climb++; |
1038 | } |
1039 | |
1040 | void decrease_flight_climb (void) |
1041 | { |
1042 | if (flight_climb > -myship.max_climb) |
1043 | flight_climb--; |
1044 | } |
1045 | |
1046 | |
1047 | void start_hyperspace (void) |
1048 | { |
1049 | if (hyper_ready) |
1050 | return; |
1051 | |
1052 | hyper_distance = calc_distance_to_planet (docked_planet, hyperspace_planet); |
1053 | |
1a8abebd |
1054 | if ((docked_planet.a == hyperspace_planet.a && |
1055 | docked_planet.b == hyperspace_planet.b && |
1056 | docked_planet.c == hyperspace_planet.c && |
1057 | docked_planet.d == hyperspace_planet.d && |
1058 | docked_planet.e == hyperspace_planet.e && |
1059 | docked_planet.f == hyperspace_planet.f) || |
1060 | (hyper_distance > cmdr.fuel)) |
84bbd123 |
1061 | return; |
1062 | |
1063 | destination_planet = hyperspace_planet; |
1064 | name_planet (hyper_name, destination_planet); |
1065 | capitalise_name (hyper_name); |
1066 | |
1067 | hyper_ready = 1; |
1068 | hyper_countdown = 15; |
1069 | hyper_galactic = 0; |
1070 | |
1071 | disengage_auto_pilot(); |
1072 | } |
1073 | |
1074 | void start_galactic_hyperspace (void) |
1075 | { |
1076 | if (hyper_ready) |
1077 | return; |
1078 | |
1079 | if (cmdr.galactic_hyperdrive == 0) |
1080 | return; |
1081 | |
1082 | hyper_ready = 1; |
1083 | hyper_countdown = 2; |
1084 | hyper_galactic = 1; |
1085 | disengage_auto_pilot(); |
1086 | } |
1087 | |
1088 | |
1089 | |
1090 | void display_hyper_status (void) |
1091 | { |
1092 | char str[80]; |
1093 | |
1094 | sprintf (str, "%d", hyper_countdown); |
1095 | |
1096 | if ((current_screen == SCR_FRONT_VIEW) || (current_screen == SCR_REAR_VIEW) || |
1097 | (current_screen == SCR_LEFT_VIEW) || (current_screen == SCR_RIGHT_VIEW)) |
1098 | { |
1099 | gfx_display_text (5, 5, str); |
1100 | if (hyper_galactic) |
1101 | { |
1102 | gfx_display_centre_text (358, "Galactic Hyperspace", 120, GFX_COL_WHITE); |
1103 | } |
1104 | else |
1105 | { |
1106 | sprintf (str, "Hyperspace - %s", hyper_name); |
1107 | gfx_display_centre_text (358, str, 120, GFX_COL_WHITE); |
1108 | } |
1109 | } |
1110 | else |
1111 | { |
1112 | gfx_clear_area (5, 5, 25, 34); |
1113 | gfx_display_text (5, 5, str); |
1114 | } |
1115 | } |
1116 | |
1117 | |
1118 | int rotate_byte_left (int x) |
1119 | { |
1120 | return ((x << 1) | (x >> 7)) & 255; |
1121 | } |
1122 | |
1123 | void enter_next_galaxy (void) |
1124 | { |
1125 | cmdr.galaxy_number++; |
1126 | cmdr.galaxy_number &= 7; |
1127 | |
1128 | cmdr.galaxy.a = rotate_byte_left (cmdr.galaxy.a); |
1129 | cmdr.galaxy.b = rotate_byte_left (cmdr.galaxy.b); |
1130 | cmdr.galaxy.c = rotate_byte_left (cmdr.galaxy.c); |
1131 | cmdr.galaxy.d = rotate_byte_left (cmdr.galaxy.d); |
1132 | cmdr.galaxy.e = rotate_byte_left (cmdr.galaxy.e); |
1133 | cmdr.galaxy.f = rotate_byte_left (cmdr.galaxy.f); |
1134 | |
1135 | docked_planet = find_planet (0x60, 0x60); |
1136 | hyperspace_planet = docked_planet; |
1137 | } |
1138 | |
1139 | |
1140 | |
1141 | |
1142 | |
1143 | void enter_witchspace (void) |
1144 | { |
1145 | int i; |
1146 | int nthg; |
1147 | |
1148 | witchspace = 1; |
1149 | docked_planet.b ^= 31; |
1150 | in_battle = 1; |
1151 | |
1152 | flight_speed = 12; |
1153 | flight_roll = 0; |
1154 | flight_climb = 0; |
1155 | create_new_stars(); |
1156 | clear_universe(); |
1157 | |
1158 | nthg = (randint() & 3) + 1; |
1159 | |
1160 | for (i = 0; i < nthg; i++) |
1161 | create_thargoid(); |
1162 | |
1163 | current_screen = SCR_BREAK_PATTERN; |
1164 | snd_play_sample (SND_HYPERSPACE); |
1165 | } |
1166 | |
1167 | |
1168 | void complete_hyperspace (void) |
1169 | { |
1170 | Matrix rotmat; |
1171 | int px,py,pz; |
1172 | |
1173 | hyper_ready = 0; |
1174 | witchspace = 0; |
1175 | |
1176 | if (hyper_galactic) |
1177 | { |
1178 | cmdr.galactic_hyperdrive = 0; |
1179 | enter_next_galaxy(); |
1180 | cmdr.legal_status = 0; |
1181 | } |
1182 | else |
1183 | { |
1184 | cmdr.fuel -= hyper_distance; |
1185 | cmdr.legal_status /= 2; |
1186 | |
1187 | if ((rand255() > 253) || (flight_climb == myship.max_climb)) |
1188 | { |
1189 | enter_witchspace(); |
1190 | return; |
1191 | } |
1192 | |
1193 | docked_planet = destination_planet; |
1194 | } |
1195 | |
1196 | cmdr.market_rnd = rand255(); |
1197 | generate_planet_data (¤t_planet_data, docked_planet); |
1198 | generate_stock_market (); |
1199 | |
1200 | flight_speed = 12; |
1201 | flight_roll = 0; |
1202 | flight_climb = 0; |
1203 | create_new_stars(); |
1204 | clear_universe(); |
1205 | |
1206 | generate_landscape(docked_planet.a * 251 + docked_planet.b); |
1207 | set_init_matrix (rotmat); |
1208 | |
1209 | pz = (((docked_planet.b) & 7) + 7) / 2; |
1210 | px = pz / 2; |
1211 | py = px; |
1212 | |
1213 | px <<= 16; |
1214 | py <<= 16; |
1215 | pz <<= 16; |
1216 | |
1217 | if ((docked_planet.b & 1) == 0) |
1218 | { |
1219 | px = -px; |
1220 | py = -py; |
1221 | } |
1222 | |
1223 | add_new_ship (SHIP_PLANET, px, py, pz, rotmat, 0, 0); |
1224 | |
1225 | |
1226 | pz = -(((docked_planet.d & 7) | 1) << 16); |
1227 | px = ((docked_planet.f & 3) << 16) | ((docked_planet.f & 3) << 8); |
1228 | |
1229 | add_new_ship (SHIP_SUN, px, py, pz, rotmat, 0, 0); |
1230 | |
1231 | current_screen = SCR_BREAK_PATTERN; |
1232 | snd_play_sample (SND_HYPERSPACE); |
1233 | } |
1234 | |
1235 | |
1236 | void countdown_hyperspace (void) |
1237 | { |
1238 | if (hyper_countdown == 0) |
1239 | { |
1240 | complete_hyperspace(); |
1241 | return; |
1242 | } |
1243 | |
1244 | hyper_countdown--; |
1245 | } |
1246 | |
1247 | |
1248 | |
1249 | void jump_warp (void) |
1250 | { |
1251 | int i; |
1252 | int type; |
1253 | int jump; |
4c1c1a84 |
1254 | |
1255 | if (!kbd_ctrl_pressed) { |
1256 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
1257 | { |
1258 | type = universe[i].type; |
84bbd123 |
1259 | |
4c1c1a84 |
1260 | if ((type > 0) && (type != SHIP_ASTEROID) && (type != SHIP_CARGO) && |
1261 | (type != SHIP_ALLOY) && (type != SHIP_ROCK) && |
1262 | (type != SHIP_BOULDER) && (type != SHIP_ESCAPE_CAPSULE)) |
1263 | { |
1264 | info_message ("Mass Locked"); |
1265 | return; |
1266 | } |
1267 | } |
1268 | if ((universe[0].distance < 75001) || (universe[1].distance < 75001)) |
1269 | { |
1270 | info_message ("Mass Locked"); |
1271 | return; |
1272 | } |
84bbd123 |
1273 | |
84bbd123 |
1274 | } |
1275 | |
1276 | |
1277 | if (universe[0].distance < universe[1].distance) |
1278 | jump = universe[0].distance - 75000; |
1279 | else |
1280 | jump = universe[1].distance - 75000; |
1281 | |
4c1c1a84 |
1282 | if (jump > 1024 || kbd_ctrl_pressed) |
84bbd123 |
1283 | jump = 1024; |
1284 | |
1285 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) |
1286 | { |
1287 | if (universe[i].type != 0) |
1288 | universe[i].location.z -= jump; |
1289 | } |
1290 | |
1291 | warp_stars = 1; |
4c1c1a84 |
1292 | if (!kbd_ctrl_pressed) { |
1293 | mcount &= 63; |
1294 | in_battle = 0; |
1295 | } |
84bbd123 |
1296 | } |
1297 | |
1298 | |
1299 | void launch_player (void) |
1300 | { |
1301 | Matrix rotmat; |
1302 | |
1303 | docked = 0; |
1304 | flight_speed = 12; |
1305 | flight_roll = -15; |
1306 | flight_climb = 0; |
1307 | cmdr.legal_status |= carrying_contraband(); |
1308 | create_new_stars(); |
1309 | clear_universe(); |
1310 | generate_landscape(docked_planet.a * 251 + docked_planet.b); |
1311 | set_init_matrix (rotmat); |
1312 | add_new_ship (SHIP_PLANET, 0, 0, 65536, rotmat, 0, 0); |
40471f00 |
1313 | #ifdef HACKING |
1a8abebd |
1314 | identify = 0; |
40471f00 |
1315 | #endif |
1a8abebd |
1316 | scanner_zoom = 1; |
84bbd123 |
1317 | |
1318 | rotmat[2].x = -rotmat[2].x; |
1319 | rotmat[2].y = -rotmat[2].y; |
1320 | rotmat[2].z = -rotmat[2].z; |
1321 | add_new_station (0, 0, -256, rotmat); |
1322 | |
1323 | current_screen = SCR_BREAK_PATTERN; |
1324 | snd_play_sample (SND_LAUNCH); |
1325 | } |
1326 | |
1327 | |
1328 | |
1329 | /* |
1330 | * Engage the docking computer. |
1331 | * For the moment we just do an instant dock if we are in the safe zone. |
1332 | */ |
1333 | |
1334 | void engage_docking_computer (void) |
1335 | { |
1336 | if (ship_count[SHIP_CORIOLIS] || ship_count[SHIP_DODEC]) |
1337 | { |
1a8abebd |
1338 | snd_play_sample (SND_DOCK); |
84bbd123 |
1339 | dock_player(); |
1340 | current_screen = SCR_BREAK_PATTERN; |
1341 | } |
1342 | } |
1343 | |
1a8abebd |
1344 | |
1345 | void update_condition(void) |
1346 | { |
1347 | if (docked) |
1348 | condition = COND_DOCKED; |
1349 | else if (energy < 50 || myship.altitude < 32 || myship.cabtemp > 224) |
1350 | condition = COND_ALERT; |
1351 | else if (energy < 128 || myship.altitude < 64 || myship.cabtemp > 192) |
1352 | condition = COND_RED; |
1353 | else { |
1354 | int i; |
1355 | condition = COND_GREEN; |
1356 | if (myship.altitude < 128 || myship.cabtemp >= 128) |
1357 | condition = COND_YELLOW; |
1358 | for (i = 0; i < MAX_UNIV_OBJECTS; i++) { |
1359 | struct univ_object *un = &universe[i]; |
1360 | if (un->type <= 0) |
1361 | continue; |
1362 | if (un->flags & FLG_HOSTILE) { |
1363 | condition = COND_RED; |
1364 | break; |
1365 | } |
1366 | if (condition == COND_GREEN && |
1367 | un->type != SHIP_ASTEROID && un->type != SHIP_CARGO && |
1368 | un->type != SHIP_ALLOY && un->type != SHIP_ROCK && |
1369 | un->type != SHIP_BOULDER && un->type != SHIP_ESCAPE_CAPSULE && |
1370 | un->type != SHIP_CORIOLIS && un->type != SHIP_DODEC) |
1371 | condition = COND_YELLOW; |
1372 | } |
1373 | } |
1374 | } |