| 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 | * sound.c |
| 17 | */ |
| 18 | |
| 19 | #include <stdlib.h> |
| 20 | #include <allegro.h> |
| 21 | #include "sound.h" |
| 22 | #include "alg_data.h" |
| 23 | |
| 24 | #define NUM_SAMPLES 14 |
| 25 | |
| 26 | extern DATAFILE *datafile; |
| 27 | |
| 28 | static int sound_on; |
| 29 | |
| 30 | struct sound_sample |
| 31 | { |
| 32 | SAMPLE *sample; |
| 33 | char filename[256]; |
| 34 | int runtime; |
| 35 | int timeleft; |
| 36 | }; |
| 37 | |
| 38 | struct sound_sample sample_list[NUM_SAMPLES] = |
| 39 | { |
| 40 | {NULL, "launch.wav", 32, 0}, |
| 41 | {NULL, "crash.wav", 7, 0}, |
| 42 | {NULL, "dock.wav", 36, 0}, |
| 43 | {NULL, "gameover.wav", 24, 0}, |
| 44 | {NULL, "pulse.wav", 4, 0}, |
| 45 | {NULL, "hitem.wav", 4, 0}, |
| 46 | {NULL, "explode.wav", 23, 0}, |
| 47 | {NULL, "ecm.wav", 23, 0}, |
| 48 | {NULL, "missile.wav", 25, 0}, |
| 49 | {NULL, "hyper.wav", 37, 0}, |
| 50 | {NULL, "incom1.wav", 4, 0}, |
| 51 | {NULL, "incom2.wav", 5, 0}, |
| 52 | {NULL, "beep.wav", 2, 0}, |
| 53 | {NULL, "boop.wav", 7, 0}, |
| 54 | }; |
| 55 | |
| 56 | |
| 57 | void snd_sound_startup (void) |
| 58 | { |
| 59 | int i; |
| 60 | |
| 61 | /* Install a sound driver.. */ |
| 62 | sound_on = 1; |
| 63 | |
| 64 | if (install_sound(DIGI_AUTODETECT, MIDI_AUTODETECT, ".") != 0) |
| 65 | { |
| 66 | sound_on = 0; |
| 67 | return; |
| 68 | } |
| 69 | |
| 70 | /* Load the sound samples... */ |
| 71 | |
| 72 | for (i = 0; i < NUM_SAMPLES; i++) |
| 73 | { |
| 74 | sample_list[i].sample = load_sample(sample_list[i].filename); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | |
| 79 | void snd_sound_shutdown (void) |
| 80 | { |
| 81 | int i; |
| 82 | |
| 83 | if (!sound_on) |
| 84 | return; |
| 85 | |
| 86 | for (i = 0; i < NUM_SAMPLES; i++) |
| 87 | { |
| 88 | if (sample_list[i].sample != NULL) |
| 89 | { |
| 90 | destroy_sample (sample_list[i].sample); |
| 91 | sample_list[i].sample = NULL; |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | |
| 97 | void snd_play_sample (int sample_no) |
| 98 | { |
| 99 | if (!sound_on) |
| 100 | return; |
| 101 | |
| 102 | if (sample_list[sample_no].timeleft != 0) |
| 103 | return; |
| 104 | |
| 105 | sample_list[sample_no].timeleft = sample_list[sample_no].runtime; |
| 106 | |
| 107 | play_sample (sample_list[sample_no].sample, 255, 128, 1000, FALSE); |
| 108 | } |
| 109 | |
| 110 | |
| 111 | void snd_update_sound (void) |
| 112 | { |
| 113 | int i; |
| 114 | |
| 115 | for (i = 0; i < NUM_SAMPLES; i++) |
| 116 | { |
| 117 | if (sample_list[i].timeleft > 0) |
| 118 | sample_list[i].timeleft--; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | |
| 123 | void snd_play_midi (int midi_no, int repeat) |
| 124 | { |
| 125 | if (!sound_on) |
| 126 | return; |
| 127 | |
| 128 | switch (midi_no) |
| 129 | { |
| 130 | case SND_ELITE_THEME: |
| 131 | play_midi (datafile[THEME].dat, repeat); |
| 132 | break; |
| 133 | |
| 134 | case SND_BLUE_DANUBE: |
| 135 | play_midi (datafile[DANUBE].dat, repeat); |
| 136 | break; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | |
| 141 | void snd_stop_midi (void) |
| 142 | { |
| 143 | if (sound_on); |
| 144 | play_midi (NULL, TRUE); |
| 145 | } |