peter1138@4656: /* $Id$ */
peter1138@4656: 
peter1138@4656: #include "stdafx.h"
peter1138@4656: #include "openttd.h"
peter1138@4656: #include "pool.h"
peter1138@4656: #include "sound.h"
peter1138@4656: #include "engine.h"
peter1138@4656: #include "vehicle.h"
peter1138@4656: #include "newgrf_callbacks.h"
peter1138@4656: #include "newgrf_engine.h"
peter1138@4656: #include "newgrf_sound.h"
peter1138@4656: 
peter1138@4656: enum {
peter1138@4656: 	SOUND_POOL_BLOCK_SIZE_BITS = 3, /* (1 << 3) == 8 items */
peter1138@4656: 	SOUND_POOL_MAX_BLOCKS      = 1000,
peter1138@4656: };
peter1138@4656: 
peter1138@4656: static uint _sound_count = 0;
peter1138@4656: static MemoryPool _sound_pool = { "Sound", SOUND_POOL_MAX_BLOCKS, SOUND_POOL_BLOCK_SIZE_BITS, sizeof(FileEntry), NULL, NULL, 0, 0, NULL };
peter1138@4656: 
peter1138@4656: 
peter1138@4656: /* Allocate a new FileEntry */
peter1138@4656: FileEntry *AllocateFileEntry(void)
peter1138@4656: {
peter1138@4656: 	if (_sound_count == _sound_pool.total_items) {
peter1138@4656: 		if (!AddBlockToPool(&_sound_pool)) return NULL;
peter1138@4656: 	}
peter1138@4656: 
peter1138@4656: 	return (FileEntry*)GetItemFromPool(&_sound_pool, _sound_count++);
peter1138@4656: }
peter1138@4656: 
peter1138@4656: 
peter1138@4656: void InitializeSoundPool(void)
peter1138@4656: {
peter1138@4656: 	CleanPool(&_sound_pool);
peter1138@4656: 	_sound_count = 0;
peter1138@4656: 
peter1138@4656: 	/* Copy original sound data to the pool */
peter1138@4656: 	SndCopyToPool();
peter1138@4656: }
peter1138@4656: 
peter1138@4656: 
peter1138@4656: FileEntry *GetSound(uint index)
peter1138@4656: {
peter1138@4656: 	if (index >= _sound_count) return NULL;
peter1138@4656: 	return (FileEntry*)GetItemFromPool(&_sound_pool, index);
peter1138@4656: }
peter1138@4656: 
peter1138@4656: 
peter1138@4656: uint GetNumSounds(void)
peter1138@4656: {
peter1138@4656: 	return _sound_count;
peter1138@4656: }
peter1138@4656: 
peter1138@4656: 
peter1138@4656: bool PlayVehicleSound(const Vehicle *v, VehicleSoundEvent event)
peter1138@4656: {
peter1138@4656: 	const GRFFile *file = GetEngineGRF(v->engine_type);
peter1138@4656: 	uint16 callback;
peter1138@4656: 
peter1138@4656: 	/* If the engine has no GRF ID associated it can't ever play any new sounds */
peter1138@4656: 	if (file == NULL) return false;
peter1138@4656: 
peter1138@4656: 	/* Check that the vehicle type uses the sound effect callback */
peter1138@4656: 	if (!HASBIT(EngInfo(v->engine_type)->callbackmask, CBM_SOUND_EFFECT)) return false;
peter1138@4656: 
peter1138@4656: 	callback = GetVehicleCallback(CBID_VEHICLE_SOUND_EFFECT, event, 0, v->engine_type, v);
peter1138@4656: 	if (callback == CALLBACK_FAILED) return false;
peter1138@4656: 	if (callback >= GetNumOriginalSounds()) callback += file->sound_offset - GetNumOriginalSounds();
peter1138@4656: 
peter1138@4701: 	if (callback < GetNumSounds()) SndPlayVehicleFx(callback, v);
peter1138@4656: 	return true;
peter1138@4656: }