peter1138@3595: /* $Id$ */
peter1138@3595: 
peter1138@3595: #include "stdafx.h"
peter1138@3595: #include "openttd.h"
peter1138@3595: #include "pool.h"
peter1138@3595: #include "sprite.h"
peter1138@3595: 
peter1138@3595: enum {
peter1138@3595: 	SPRITEGROUP_POOL_BLOCK_SIZE_BITS = 4, /* (1 << 4) == 16 items */
peter1138@3595: 	SPRITEGROUP_POOL_MAX_BLOCKS      = 8000,
peter1138@3595: };
peter1138@3595: 
peter1138@3595: static uint _spritegroup_count = 0;
peter1138@3595: static MemoryPool _spritegroup_pool;
peter1138@3595: 
peter1138@3595: 
peter1138@3595: static void SpriteGroupPoolCleanBlock(uint start_item, uint end_item)
peter1138@3595: {
peter1138@3595: 	uint i;
peter1138@3595: 
peter1138@3595: 	for (i = start_item; i <= end_item; i++) {
peter1138@3595: 		SpriteGroup *group = (SpriteGroup*)GetItemFromPool(&_spritegroup_pool, i);
peter1138@3595: 
peter1138@3595: 		/* Free dynamically allocated memory */
peter1138@3595: 		switch (group->type) {
peter1138@3595: 			case SGT_REAL:
peter1138@3595: 				free(group->g.real.loaded);
peter1138@3595: 				free(group->g.real.loading);
peter1138@3595: 				break;
peter1138@3595: 
peter1138@3595: 			case SGT_DETERMINISTIC:
peter1138@3595: 				free(group->g.determ.ranges);
peter1138@3595: 				break;
peter1138@3595: 
peter1138@3595: 			case SGT_RANDOMIZED:
peter1138@3595: 				free(group->g.random.groups);
peter1138@3595: 				break;
peter1138@3595: 
peter1138@3595: 			default:
peter1138@3595: 				break;
peter1138@3595: 		}
peter1138@3595: 	}
peter1138@3595: }
peter1138@3595: 
peter1138@3595: 
peter1138@3595: /* Initialize the SpriteGroup pool */
peter1138@3595: static MemoryPool _spritegroup_pool = { "SpriteGr", SPRITEGROUP_POOL_MAX_BLOCKS, SPRITEGROUP_POOL_BLOCK_SIZE_BITS, sizeof(SpriteGroup), NULL, &SpriteGroupPoolCleanBlock, 0, 0, NULL };
peter1138@3595: 
peter1138@3595: 
peter1138@3595: /* Allocate a new SpriteGroup */
peter1138@3595: SpriteGroup *AllocateSpriteGroup(void)
peter1138@3595: {
peter1138@3595: 	/* This is totally different to the other pool allocators, as we never remove an item from the pool. */
peter1138@3595: 	if (_spritegroup_count == _spritegroup_pool.total_items) {
peter1138@3595: 		if (!AddBlockToPool(&_spritegroup_pool)) return NULL;
peter1138@3595: 	}
peter1138@3595: 
peter1138@3595: 	return (SpriteGroup*)GetItemFromPool(&_spritegroup_pool, _spritegroup_count++);
peter1138@3595: }
peter1138@3595: 
peter1138@3595: 
peter1138@3595: void InitializeSpriteGroupPool(void)
peter1138@3595: {
peter1138@3595: 	CleanPool(&_spritegroup_pool);
peter1138@3595: 	AddBlockToPool(&_spritegroup_pool);
peter1138@3595: 
peter1138@3595: 	_spritegroup_count = 0;
peter1138@3595: }