Rev 18 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | pmbaty | 1 | #include "3d.h" |
| 2 | #include "audio.h" |
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| 3 | #include "harness/trace.h" |
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| 4 | #include "resource.h" |
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| 5 | #include "s3sound.h" |
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| 6 | #include <math.h> |
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| 7 | #include <stdio.h> |
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| 8 | #include <string.h> |
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| 9 | |||
| 10 | tS3_vector3 gS3_listener_position_old; |
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| 11 | tS3_vector3 gS3_listener_position_now; |
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| 12 | tS3_vector3 gS3_listener_vel_now; |
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| 13 | tS3_vector3 gS3_listener_left_now; |
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| 14 | |||
| 15 | void* gS3_listener_pos_ptr; |
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| 16 | void* gS3_listener_vel_ptr; |
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| 17 | void* gS3_listener_left_ptr; |
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| 18 | |||
| 19 | int gS3_listener_pos_is_brender; |
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| 20 | int gS3_listener_vel_is_brender; |
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| 21 | int gS3_listener_left_is_brender; |
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| 22 | |||
| 23 | float dword_531D9C; |
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| 24 | float flt_531D7C; |
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| 25 | float flt_531D98; |
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| 26 | |||
| 20 | pmbaty | 27 | void S3Set3DSoundEnvironment(float a1, float a2, float a3) { |
| 1 | pmbaty | 28 | float tmp; |
| 29 | |||
| 20 | pmbaty | 30 | if (a1 == -1.0f) { |
| 31 | a1 = 0.25f; |
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| 1 | pmbaty | 32 | } |
| 33 | if (a2 == -1.0f) { |
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| 34 | a2 = 1.2f; |
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| 35 | } |
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| 36 | if (a3 == -1.0f) { |
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| 37 | a3 = 130000.0f; |
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| 38 | } |
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| 20 | pmbaty | 39 | dword_531D9C = a1; |
| 1 | pmbaty | 40 | tmp = sqrtf(a3 / a2); |
| 41 | flt_531D7C = tmp; |
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| 42 | flt_531D98 = tmp * dword_531D9C; |
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| 43 | gS3_listener_position_now.x = 0.0; |
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| 44 | gS3_listener_position_now.y = 0.0; |
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| 45 | gS3_listener_position_now.z = 0.0; |
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| 46 | gS3_listener_vel_now.x = 0.0; |
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| 47 | gS3_listener_vel_now.y = 0.0; |
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| 48 | gS3_listener_vel_now.z = 0.0; |
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| 49 | gS3_listener_left_now.x = 0.0; |
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| 50 | gS3_listener_left_now.y = 0.0; |
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| 51 | gS3_listener_left_now.z = 0.0; |
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| 52 | } |
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| 53 | |||
| 54 | void S3CopyVector3(void* a1, void* a2, int pBrender_vector) { |
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| 55 | if (pBrender_vector) { |
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| 56 | S3CopyBrVector3((tS3_vector3*)a1, (br_vector3*)a2); |
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| 57 | } else { |
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| 58 | S3CopyS3Vector3((tS3_vector3*)a1, (tS3_vector3*)a2); |
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| 59 | } |
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| 60 | } |
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| 61 | |||
| 62 | void S3CopyBrVector3(tS3_vector3* a1, br_vector3* a2) { |
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| 63 | a1->x = a2->v[0]; |
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| 64 | a1->y = a2->v[1]; |
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| 65 | a1->z = a2->v[2]; |
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| 66 | } |
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| 67 | |||
| 68 | void S3CopyS3Vector3(tS3_vector3* a1, tS3_vector3* a2) { |
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| 69 | *a1 = *a2; |
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| 70 | } |
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| 71 | |||
| 72 | void S3BindListenerPositionBRender(br_vector3* pos) { |
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| 73 | gS3_listener_pos_ptr = pos; |
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| 74 | gS3_listener_pos_is_brender = 1; |
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| 75 | S3CopyBrVector3(&gS3_listener_position_old, pos); |
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| 76 | } |
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| 77 | |||
| 78 | void S3BindListenerVelocityBRender(br_vector3* vel) { |
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| 79 | gS3_listener_vel_ptr = vel; |
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| 80 | gS3_listener_vel_is_brender = 1; |
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| 81 | } |
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| 82 | |||
| 83 | void S3BindListenerLeftBRender(br_vector3* left) { |
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| 84 | gS3_listener_left_ptr = left; |
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| 85 | gS3_listener_left_is_brender = 1; |
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| 86 | } |
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| 87 | |||
| 88 | void S3UpdateListenerVectors(void) { |
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| 89 | if (gS3_listener_pos_ptr) { |
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| 90 | S3CopyVector3(&gS3_listener_position_now, gS3_listener_pos_ptr, gS3_listener_pos_is_brender); |
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| 91 | } |
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| 92 | if (gS3_listener_vel_ptr) { |
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| 93 | S3CopyVector3(&gS3_listener_vel_now, gS3_listener_vel_ptr, gS3_listener_vel_is_brender); |
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| 94 | } else { |
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| 95 | gS3_listener_vel_now.x = (gS3_listener_position_now.x - gS3_listener_position_old.x) / 1000.0 * gS3_service_time_delta; |
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| 96 | gS3_listener_vel_now.y = (gS3_listener_position_now.y - gS3_listener_position_old.y) / 1000.0 * gS3_service_time_delta; |
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| 97 | gS3_listener_vel_now.z = (gS3_listener_position_now.z - gS3_listener_position_old.z) / 1000.0 * gS3_service_time_delta; |
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| 98 | gS3_listener_position_old = gS3_listener_position_now; |
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| 99 | } |
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| 100 | if (gS3_listener_left_ptr) { |
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| 101 | S3CopyVector3(&gS3_listener_left_now, gS3_listener_left_ptr, gS3_listener_left_is_brender); |
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| 102 | } else { |
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| 103 | gS3_listener_left_now.x = gS3_listener_position_now.x + 1.0; |
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| 104 | gS3_listener_left_now.y = gS3_listener_position_now.y; |
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| 105 | gS3_listener_left_now.z = gS3_listener_position_now.z; |
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| 106 | } |
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| 107 | } |
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| 108 | |||
| 109 | void S3ServiceAmbientSoundSources(void) { |
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| 110 | tS3_sound_source* s; // [esp+Ch] [ebp-4h] |
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| 111 | |||
| 112 | for (s = gS3_sound_sources; s; s = s->next) { |
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| 113 | if (s->ambient == 0) { |
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| 114 | continue; |
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| 115 | } |
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| 116 | if (s->period > 0) { |
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| 117 | s->time_since_last_played += gS3_service_time_delta; |
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| 118 | } |
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| 119 | if (s->channel && s->channel->tag != s->tag) { |
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| 120 | S3StopChannel(s->channel); |
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| 121 | s->channel = NULL; |
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| 122 | s->tag = 0; |
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| 123 | } |
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| 124 | |||
| 125 | if (s->channel != NULL) { |
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| 126 | continue; |
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| 127 | } |
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| 128 | if (s->time_since_last_played <= s->period || !s->period || s->tag) { |
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| 129 | if ((s->ambient_repeats == 0 || s->period == 0) && s->tag == 0) { |
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| 130 | if (s->volume > 0 && S3ServiceSoundSource(s) == 0) { |
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| 131 | s->channel = NULL; |
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| 132 | s->tag = 0; |
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| 133 | } |
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| 134 | s->time_since_last_played = 0; |
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| 135 | } |
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| 136 | } else { |
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| 137 | if (s->volume > 0 && S3ServiceSoundSource(s) == 0) { |
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| 138 | s->channel = NULL; |
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| 139 | s->tag = 0; |
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| 140 | } |
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| 141 | s->time_since_last_played = 0; |
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| 142 | } |
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| 143 | } |
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| 144 | } |
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| 145 | |||
| 146 | int S3UpdateSpatialSound(tS3_channel* chan) { |
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| 147 | int close_enough_to_play; // [esp+10h] [ebp-4h] |
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| 148 | |||
| 149 | if (chan->sound_source_ptr && chan->sound_source_ptr->ambient) { |
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| 150 | close_enough_to_play = S3Calculate3D(chan, 1); |
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| 151 | } else { |
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| 152 | close_enough_to_play = S3Calculate3D(chan, 0); |
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| 153 | } |
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| 154 | if (close_enough_to_play) { |
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| 155 | S3SyncSampleVolumeAndPan(chan); |
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| 156 | S3SyncSampleRate(chan); |
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| 157 | } |
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| 158 | return close_enough_to_play; |
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| 159 | } |
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| 160 | |||
| 161 | int S3BindAmbientSoundToOutlet(tS3_outlet* pOutlet, int pSound, tS3_sound_source* source, float pMax_distance, int pPeriod, int pRepeats, int pVolume, int pPitch, int pSpeed) { |
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| 162 | tS3_descriptor* desc; // [esp+Ch] [ebp-4h] |
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| 163 | |||
| 164 | if (!gS3_enabled) { |
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| 165 | return 0; |
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| 166 | } |
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| 167 | if (!source) { |
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| 168 | return eS3_error_nonexistant_source; |
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| 169 | } |
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| 170 | desc = S3GetDescriptorByID(pSound); |
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| 171 | if (!desc) { |
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| 172 | return eS3_error_bad_id; |
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| 173 | } |
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| 174 | if (desc->type != eS3_ST_sample) { |
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| 175 | return 0; |
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| 176 | } |
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| 177 | if ((!desc->sound_data || (desc->flags & 2) != 0) && !S3LoadSample(pSound)) { |
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| 178 | return eS3_error_load_sound; |
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| 179 | } |
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| 180 | if (pVolume > 255) { |
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| 181 | pVolume = 255; |
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| 182 | } |
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| 183 | if (pVolume < 0) { |
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| 184 | pVolume = 128; |
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| 185 | } |
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| 186 | if (pPitch < 0) { |
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| 187 | pPitch = 0x10000; |
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| 188 | } |
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| 189 | if (pSpeed < 0) { |
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| 190 | pSpeed = 0x10000; |
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| 191 | } |
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| 192 | source->bound_outlet = pOutlet; |
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| 193 | source->sound_id = pSound; |
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| 194 | source->volume = pVolume; |
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| 195 | source->max_distance_sq = pMax_distance; |
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| 196 | source->period = pPeriod; |
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| 197 | source->pitch = pPitch; |
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| 198 | source->speed = pSpeed; |
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| 199 | source->ambient = 1; |
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| 200 | |||
| 201 | source->ambient_repeats = pRepeats < 0 ? 0 : pRepeats; |
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| 202 | source->time_since_last_played = pPeriod; |
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| 203 | source->channel = NULL; |
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| 204 | source->tag = 0; |
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| 205 | return eS3_error_none; |
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| 206 | } |
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| 207 | |||
| 208 | void S3UpdateSoundSource(tS3_outlet* outlet, tS3_sound_tag tag, tS3_sound_source* src, float pMax_distance_squared, int pPeriod, tS3_repeats pAmbient_repeats, tS3_volume pVolume, int pPitch, tS3_speed pSpeed) { |
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| 209 | tS3_channel* chan; // [esp+28h] [ebp-Ch] |
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| 210 | tS3_descriptor* desc; // [esp+2Ch] [ebp-8h] |
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| 211 | int is_sample; // [esp+30h] [ebp-4h] |
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| 212 | |||
| 213 | is_sample = 0; |
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| 214 | if (!gS3_enabled || !src) { |
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| 215 | return; |
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| 216 | } |
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| 217 | chan = src->channel; |
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| 218 | if (tag != -1 && src->sound_id != tag) { |
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| 219 | desc = S3GetDescriptorByID(tag); |
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| 220 | if (desc == NULL) { |
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| 221 | return; |
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| 222 | } |
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| 223 | if (desc->type == eS3_ST_sample) { |
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| 224 | src->sound_id = tag; |
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| 225 | if ((desc->sound_data == NULL || (desc->flags & 2) != 0) && !S3LoadSample(tag)) { |
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| 226 | return; |
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| 227 | } |
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| 228 | is_sample = 1; |
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| 229 | } |
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| 230 | } |
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| 231 | if (pSpeed != -1) { |
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| 232 | if (pSpeed < 1) { |
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| 233 | pSpeed = 0x10000; |
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| 234 | } |
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| 235 | src->speed = pSpeed; |
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| 236 | } |
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| 237 | if (pPitch != -1) { |
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| 238 | if (pPitch < 1) { |
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| 239 | pPitch = 0x10000; |
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| 240 | } |
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| 241 | src->pitch = pPitch; |
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| 242 | if (chan && chan->descriptor && chan->descriptor->type == eS3_ST_sample) { |
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| 243 | chan->initial_pitch = S3IRandomBetweenLog(chan->descriptor->min_pitch, chan->descriptor->max_pitch, ((tS3_sample*)chan->descriptor->sound_data)->rate); |
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| 244 | chan->initial_pitch *= ldexpf(src->pitch, -16); |
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| 245 | chan->initial_pitch *= ldexpf(src->speed, -16); |
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| 246 | } |
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| 247 | } |
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| 248 | if (pAmbient_repeats != -1) { |
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| 249 | src->ambient_repeats = MAX(0, pAmbient_repeats); |
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| 250 | if (chan) { |
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| 251 | chan->repetitions = src->ambient_repeats; |
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| 252 | } |
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| 253 | } |
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| 254 | if (pMax_distance_squared != -1.0f) { |
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| 255 | src->max_distance_sq = pMax_distance_squared; |
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| 256 | if (chan) { |
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| 257 | chan->pMax_distance_squared = pMax_distance_squared; |
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| 258 | } |
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| 259 | } |
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| 260 | if (pPeriod != -1) { |
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| 261 | src->period = pPeriod; |
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| 262 | } |
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| 263 | if (pVolume != -1) { |
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| 264 | if (pVolume > 255) { |
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| 265 | pVolume = 255; |
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| 266 | } |
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| 267 | if (pVolume < 0) { |
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| 268 | pVolume = 128; |
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| 269 | } |
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| 270 | if (src->volume != pVolume) { |
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| 271 | src->volume = pVolume; |
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| 272 | } |
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| 273 | if (chan) { |
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| 274 | chan->initial_volume = pVolume; |
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| 275 | } |
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| 276 | } |
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| 277 | if (chan) { |
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| 278 | if (chan->sound_source_ptr != src) { |
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| 279 | S3StopChannel(chan); |
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| 280 | } |
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| 281 | if (!pVolume || is_sample) { |
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| 282 | chan->spatial_sound = 0; |
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| 283 | chan->needs_service = 1; |
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| 284 | S3StopChannel(chan); |
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| 285 | src->channel = 0; |
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| 286 | src->tag = 0; |
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| 287 | } |
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| 288 | } |
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| 289 | } |
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| 290 | |||
| 291 | void S3StopSoundSource(tS3_sound_source* src) { |
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| 292 | if (!gS3_enabled) { |
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| 293 | return; |
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| 294 | } |
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| 295 | if (src) { |
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| 296 | if (src->channel && src->tag && src->channel->tag == src->tag) { |
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| 297 | src->channel->termination_reason = eS3_tr_stopped; |
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| 298 | src->channel->spatial_sound = 0; |
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| 299 | S3StopChannel(src->channel); |
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| 300 | src->channel->sound_source_ptr = NULL; |
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| 301 | } |
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| 302 | src->ambient = 0; |
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| 303 | } |
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| 304 | } |
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| 305 | |||
| 306 | tS3_sound_tag S3ServiceSoundSource(tS3_sound_source* src) { |
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| 307 | tS3_channel* chan; // [esp+30h] [ebp-10h] |
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| 308 | tS3_outlet* outlet; // [esp+34h] [ebp-Ch] |
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| 309 | tS3_descriptor* desc; // [esp+3Ch] [ebp-4h] |
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| 310 | |||
| 311 | if (!src) { |
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| 312 | return 0; |
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| 313 | } |
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| 314 | if (!gS3_enabled || !src->ambient) { |
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| 315 | src->tag = 0; |
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| 316 | src->channel = 0; |
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| 317 | return 0; |
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| 318 | } |
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| 319 | outlet = src->bound_outlet; |
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| 320 | desc = S3GetDescriptorByID(src->sound_id); |
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| 321 | if (desc == NULL) { |
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| 322 | gS3_last_error = eS3_error_bad_id; |
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| 323 | return 0; |
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| 324 | } |
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| 325 | if (desc->type) { |
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| 326 | return 0; |
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| 327 | } |
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| 328 | memset(&gS3_channel_template, 0, sizeof(gS3_channel_template)); |
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| 329 | gS3_channel_template.initial_volume = src->volume; |
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| 330 | gS3_channel_template.rate = S3IRandomBetweenLog(desc->min_pitch, desc->max_pitch, ((tS3_sample*)desc->sound_data)->rate); |
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| 331 | if (src->pitch < 0) { |
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| 332 | src->pitch = 0x10000; |
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| 333 | } |
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| 334 | if (src->speed < 0) { |
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| 335 | src->speed = 0x10000; |
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| 336 | } |
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| 337 | |||
| 338 | gS3_channel_template.rate = ldexp(src->pitch, -16) * gS3_channel_template.rate; |
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| 339 | if (!outlet->independent_pitch) { |
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| 340 | gS3_channel_template.rate = ldexp(src->speed, -16) * gS3_channel_template.rate; |
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| 341 | } |
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| 342 | gS3_channel_template.initial_pitch = gS3_channel_template.rate; |
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| 343 | gS3_channel_template.sound_source_ptr = src; |
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| 344 | if (!src->velocity_ptr) { |
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| 345 | S3CopyVector3(&gS3_channel_template.lastpos, src->position_ptr, src->brender_vector); |
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| 346 | } |
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| 347 | gS3_channel_template.pMax_distance_squared = src->max_distance_sq; |
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| 348 | if (S3Calculate3D(&gS3_channel_template, 1) == 0) { |
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| 349 | src->tag = 0; |
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| 350 | src->channel = NULL; |
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| 351 | return 0; |
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| 352 | } |
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| 353 | |||
| 354 | chan = S3AllocateChannel(outlet, desc->priority * (gS3_channel_template.right_volume + gS3_channel_template.left_volume + 1)); |
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| 355 | if (chan == NULL) { |
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| 356 | gS3_last_error = eS3_error_channel_alloc; |
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| 357 | src->tag = 0; |
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| 358 | src->channel = NULL; |
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| 359 | return 0; |
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| 360 | } |
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| 361 | |||
| 362 | if ((desc->sound_data && (desc->flags & 2) == 0) || S3LoadSample(src->sound_id)) { |
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| 363 | chan->left_volume = gS3_channel_template.left_volume * chan->volume_multiplier; |
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| 364 | chan->right_volume = gS3_channel_template.right_volume * chan->volume_multiplier; |
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| 365 | chan->rate = gS3_channel_template.rate; |
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| 366 | chan->position.x = gS3_channel_template.position.x; |
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| 367 | chan->position.y = gS3_channel_template.position.y; |
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| 368 | chan->position.z = gS3_channel_template.position.z; |
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| 369 | chan->velocity.x = gS3_channel_template.velocity.x; |
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| 370 | chan->velocity.y = gS3_channel_template.velocity.y; |
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| 371 | chan->velocity.z = gS3_channel_template.velocity.z; |
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| 372 | chan->lastpos.x = gS3_channel_template.lastpos.x; |
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| 373 | chan->lastpos.y = gS3_channel_template.lastpos.y; |
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| 374 | chan->lastpos.z = gS3_channel_template.lastpos.z; |
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| 375 | chan->initial_volume = gS3_channel_template.initial_volume; |
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| 376 | chan->initial_pitch = gS3_channel_template.initial_pitch; |
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| 377 | chan->pMax_distance_squared = gS3_channel_template.pMax_distance_squared; |
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| 378 | chan->spatial_sound = 2; |
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| 379 | chan->sound_source_ptr = src; |
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| 380 | chan->descriptor = desc; |
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| 381 | chan->tag = S3GenerateTag(outlet); |
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| 382 | chan->repetitions = src->ambient_repeats; |
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| 383 | chan->needs_service = 0; |
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| 384 | chan->termination_reason = 0; |
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| 385 | S3ExecuteSampleFilterFuncs(chan); |
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| 386 | if (S3PlaySample(chan)) { |
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| 387 | src->tag = chan->tag; |
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| 388 | src->channel = chan; |
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| 389 | return chan->tag; |
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| 390 | } else { |
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| 391 | chan->needs_service = 1; |
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| 392 | gS3_last_error = eS3_error_start_sound; |
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| 393 | return 0; |
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| 394 | } |
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| 395 | } else { |
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| 396 | gS3_last_error = eS3_error_load_sound; |
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| 397 | chan->needs_service = 1; |
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| 398 | return 0; |
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| 399 | } |
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| 400 | } |
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| 401 | |||
| 402 | tS3_sound_tag S3StartSound3D(tS3_outlet* pOutlet, tS3_sound_id pSound, tS3_vector3* pInitial_position, tS3_vector3* pInitial_velocity, tS3_repeats pRepeats, tS3_volume pVolume, tS3_pitch pPitch, tS3_speed pSpeed) { |
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| 403 | tS3_channel* chan; // [esp+30h] [ebp-Ch] |
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| 404 | tS3_descriptor* desc; // [esp+38h] [ebp-4h] |
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| 405 | |||
| 406 | if (!gS3_enabled) { |
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| 407 | return 0; |
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| 408 | } |
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| 409 | desc = S3GetDescriptorByID(pSound); |
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| 410 | if (!desc) { |
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| 411 | gS3_last_error = eS3_error_bad_id; |
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| 412 | return 0; |
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| 413 | } |
||
| 414 | if (desc->type != eS3_ST_sample) { |
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| 415 | return 0; |
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| 416 | } |
||
| 417 | |||
| 418 | if ((desc->sound_data == NULL || (desc->flags & 2) != 0) && S3LoadSample(pSound) == 0) { |
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| 419 | gS3_last_error = eS3_error_load_sound; |
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| 420 | return 0; |
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| 421 | } |
||
| 422 | if (pVolume > 255) { |
||
| 423 | pVolume = 255; |
||
| 424 | } |
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| 425 | if (pVolume < 0) { |
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| 426 | pVolume = S3IRandomBetween(desc->min_volume, desc->max_volume, 128); |
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| 427 | } |
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| 428 | memset(&gS3_channel_template, 0, sizeof(gS3_channel_template)); |
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| 429 | gS3_channel_template.volume_multiplier = 1.0; |
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| 430 | gS3_channel_template.sound_source_ptr = 0; |
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| 431 | gS3_channel_template.pMax_distance_squared = 150.0; |
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| 432 | gS3_channel_template.right_volume = pVolume; |
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| 433 | gS3_channel_template.left_volume = pVolume; |
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| 434 | gS3_channel_template.initial_volume = pVolume; |
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| 435 | gS3_channel_template.rate = S3IRandomBetweenLog(desc->min_pitch, desc->max_pitch, ((tS3_sample*)desc->sound_data)->rate); |
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| 436 | if (pPitch == -1) { |
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| 437 | pPitch = 0x10000; |
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| 438 | } |
||
| 439 | if (pSpeed == -1) { |
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| 440 | pSpeed = 0x10000; |
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| 441 | } |
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| 442 | gS3_channel_template.rate = ldexpf(pPitch, -16) * gS3_channel_template.rate; |
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| 443 | if (!pOutlet->independent_pitch) { |
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| 444 | gS3_channel_template.rate = ldexpf(pSpeed, -16) * gS3_channel_template.rate; |
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| 445 | } |
||
| 446 | gS3_channel_template.initial_pitch = gS3_channel_template.rate; |
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| 447 | gS3_channel_template.position = *pInitial_position; |
||
| 448 | gS3_channel_template.velocity = *pInitial_velocity; |
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| 449 | |||
| 450 | if (S3Calculate3D(&gS3_channel_template, 0) == 0) { |
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| 451 | return 0; |
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| 452 | } |
||
| 453 | chan = S3AllocateChannel(pOutlet, desc->priority * (gS3_channel_template.right_volume + gS3_channel_template.left_volume + 1)); |
||
| 454 | if (chan) { |
||
| 455 | chan->left_volume = gS3_channel_template.left_volume * chan->volume_multiplier; |
||
| 456 | chan->right_volume = gS3_channel_template.right_volume * chan->volume_multiplier; |
||
| 457 | chan->rate = gS3_channel_template.rate; |
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| 458 | chan->spatial_sound = 1; |
||
| 459 | chan->sound_source_ptr = 0; |
||
| 460 | chan->descriptor = desc; |
||
| 461 | chan->needs_service = 0; |
||
| 462 | chan->termination_reason = 0; |
||
| 463 | chan->position = gS3_channel_template.position; |
||
| 464 | chan->lastpos = gS3_channel_template.lastpos; |
||
| 465 | chan->velocity = gS3_channel_template.velocity; |
||
| 466 | chan->repetitions = MAX(pRepeats, 0); |
||
| 467 | chan->tag = S3GenerateTag(pOutlet); |
||
| 468 | chan->initial_volume = gS3_channel_template.initial_volume; |
||
| 469 | chan->initial_pitch = gS3_channel_template.initial_pitch; |
||
| 470 | chan->pMax_distance_squared = gS3_channel_template.pMax_distance_squared; |
||
| 471 | S3ExecuteSampleFilterFuncs(chan); |
||
| 472 | if (S3PlaySample(chan) != 0) { |
||
| 473 | return chan->tag; |
||
| 474 | } else { |
||
| 475 | chan->needs_service = 1; |
||
| 476 | gS3_last_error = eS3_error_start_sound; |
||
| 477 | return 0; |
||
| 478 | } |
||
| 479 | } else { |
||
| 480 | gS3_last_error = eS3_error_channel_alloc; |
||
| 481 | return 0; |
||
| 482 | } |
||
| 483 | } |
||
| 484 | |||
| 485 | int S3Calculate3D(tS3_channel* chan, int pIs_ambient) { |
||
| 486 | float attenuation; // [esp+2Ch] [ebp-1Ch] |
||
| 487 | float doppler_shift; // [esp+30h] [ebp-18h] |
||
| 488 | float vol_multiplier; // [esp+38h] [ebp-10h] |
||
| 489 | tS3_sound_source* sound_source_ptr; // [esp+3Ch] [ebp-Ch] |
||
| 490 | float dist_squared; // [esp+40h] [ebp-8h] |
||
| 491 | float dist; // [esp+44h] [ebp-4h] |
||
| 492 | |||
| 493 | sound_source_ptr = chan->sound_source_ptr; |
||
| 494 | if (sound_source_ptr) { |
||
| 495 | if (sound_source_ptr->position_ptr) { |
||
| 496 | S3CopyVector3(&chan->position, sound_source_ptr->position_ptr, sound_source_ptr->brender_vector); |
||
| 497 | } |
||
| 498 | if (sound_source_ptr->velocity_ptr) { |
||
| 499 | S3CopyVector3(&chan->velocity, sound_source_ptr->velocity_ptr, sound_source_ptr->brender_vector); |
||
| 500 | } else { |
||
| 501 | chan->velocity.x = (chan->position.x - chan->lastpos.x) / 1000.0f * gS3_service_time_delta; |
||
| 502 | chan->velocity.y = (chan->position.y - chan->lastpos.y) / 1000.0f * gS3_service_time_delta; |
||
| 503 | chan->velocity.z = (chan->position.z - chan->lastpos.z) / 1000.0f * gS3_service_time_delta; |
||
| 504 | chan->lastpos = chan->position; |
||
| 505 | } |
||
| 506 | } |
||
| 507 | dist_squared = (chan->position.z - gS3_listener_position_now.z) * (chan->position.z - gS3_listener_position_now.z) |
||
| 508 | + (chan->position.x - gS3_listener_position_now.x) * (chan->position.x - gS3_listener_position_now.x) |
||
| 509 | + (chan->position.y - gS3_listener_position_now.y) * (chan->position.y - gS3_listener_position_now.y); |
||
| 510 | if (dist_squared < 0) { |
||
| 511 | dist_squared = dist_squared * -1.0; |
||
| 512 | } |
||
| 513 | |||
| 514 | if (chan->pMax_distance_squared < dist_squared) { |
||
| 515 | return 0; |
||
| 516 | } |
||
| 517 | if (dist_squared == 0.0f) { |
||
| 518 | dist = 0.0f; |
||
| 519 | } else { |
||
| 520 | dist = sqrtf(dist_squared); |
||
| 521 | } |
||
| 522 | if (pIs_ambient) { |
||
| 523 | doppler_shift = 1.0f - ((chan->position.z - gS3_listener_position_now.z) * (chan->velocity.z - gS3_listener_vel_now.z) + (chan->velocity.y - gS3_listener_vel_now.y) * (chan->position.y - gS3_listener_position_now.y) + (chan->position.x - gS3_listener_position_now.x) * (chan->velocity.x - gS3_listener_vel_now.x)) / dist / flt_531D98; |
||
| 524 | if (doppler_shift > 2.0f) { |
||
| 525 | doppler_shift = 2.0f; |
||
| 526 | } else if (doppler_shift < 0.5f) { |
||
| 527 | doppler_shift = 0.5; |
||
| 528 | } |
||
| 529 | chan->rate = chan->initial_pitch * doppler_shift; |
||
| 530 | } else { |
||
| 531 | chan->rate = chan->initial_pitch; |
||
| 532 | } |
||
| 533 | |||
| 534 | vol_multiplier = 1.0f / (dist / 6.0f + 1.0f); |
||
| 535 | if (!gS3_inside_cockpit) { |
||
| 536 | vol_multiplier = vol_multiplier * 1.3f; |
||
| 537 | } |
||
| 538 | attenuation = (chan->position.z - gS3_listener_position_now.z) * gS3_listener_left_now.z |
||
| 539 | + (chan->position.y - gS3_listener_position_now.y) * gS3_listener_left_now.y |
||
| 540 | + (chan->position.x - gS3_listener_position_now.x) * gS3_listener_left_now.x; |
||
| 541 | if (attenuation < -1.0f) { |
||
| 542 | attenuation -= ceil(attenuation); |
||
| 543 | } |
||
| 544 | if (attenuation > 1.0f) { |
||
| 545 | attenuation -= floor(attenuation); |
||
| 546 | } |
||
| 547 | chan->left_volume = (attenuation + 1.0f) / 2.0f * ((double)chan->initial_volume * vol_multiplier) * chan->volume_multiplier; |
||
| 548 | if (chan->left_volume < 0) { |
||
| 549 | chan->left_volume = 0; |
||
| 550 | } |
||
| 551 | chan->right_volume = (1.0f - attenuation) / 2.0f * ((double)chan->initial_volume * vol_multiplier) * chan->volume_multiplier; |
||
| 552 | if (chan->right_volume < 0) { |
||
| 553 | chan->right_volume = 0; |
||
| 554 | } |
||
| 555 | if (chan->left_volume > 255) { |
||
| 556 | chan->left_volume = 255; |
||
| 557 | } |
||
| 558 | if (chan->right_volume > 255) { |
||
| 559 | chan->right_volume = 255; |
||
| 560 | } |
||
| 561 | return 1; |
||
| 562 | } |