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-rw-r--r--newgrf_sound.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/newgrf_sound.c b/newgrf_sound.c
new file mode 100644
index 000000000..7d746f712
--- /dev/null
+++ b/newgrf_sound.c
@@ -0,0 +1,73 @@
+/* $Id$ */
+
+#include "stdafx.h"
+#include "openttd.h"
+#include "pool.h"
+#include "sound.h"
+#include "engine.h"
+#include "vehicle.h"
+#include "newgrf_callbacks.h"
+#include "newgrf_engine.h"
+#include "newgrf_sound.h"
+
+enum {
+ SOUND_POOL_BLOCK_SIZE_BITS = 3, /* (1 << 3) == 8 items */
+ SOUND_POOL_MAX_BLOCKS = 1000,
+};
+
+static uint _sound_count = 0;
+static MemoryPool _sound_pool = { "Sound", SOUND_POOL_MAX_BLOCKS, SOUND_POOL_BLOCK_SIZE_BITS, sizeof(FileEntry), NULL, NULL, 0, 0, NULL };
+
+
+/* Allocate a new FileEntry */
+FileEntry *AllocateFileEntry(void)
+{
+ if (_sound_count == _sound_pool.total_items) {
+ if (!AddBlockToPool(&_sound_pool)) return NULL;
+ }
+
+ return (FileEntry*)GetItemFromPool(&_sound_pool, _sound_count++);
+}
+
+
+void InitializeSoundPool(void)
+{
+ CleanPool(&_sound_pool);
+ _sound_count = 0;
+
+ /* Copy original sound data to the pool */
+ SndCopyToPool();
+}
+
+
+FileEntry *GetSound(uint index)
+{
+ if (index >= _sound_count) return NULL;
+ return (FileEntry*)GetItemFromPool(&_sound_pool, index);
+}
+
+
+uint GetNumSounds(void)
+{
+ return _sound_count;
+}
+
+
+bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
+{
+ const GRFFile *file = GetEngineGRF(v->engine_type);
+ uint16 callback;
+
+ /* If the engine has no GRF ID associated it can't ever play any new sounds */
+ if (file == NULL) return false;
+
+ /* Check that the vehicle type uses the sound effect callback */
+ if (!HASBIT(EngInfo(v->engine_type)->callbackmask, CBM_SOUND_EFFECT)) return false;
+
+ callback = GetVehicleCallback(CBID_VEHICLE_SOUND_EFFECT, event, 0, v->engine_type, v);
+ if (callback == CALLBACK_FAILED) return false;
+ if (callback >= GetNumOriginalSounds()) callback += file->sound_offset - GetNumOriginalSounds();
+
+ SndPlayVehicleFx(callback, v);
+ return true;
+}