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Location: cpp/openttd-patchpack/source/pool.h - annotation
r2072:93fbc12acd5b
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(svn r2582) Fix: Prevent generating unrealistically many Oil refineries on large maps. They are always placed next to the borderline, so the perimeter is used instead of area to scale the number of those industries.
r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 r1259:71cef82739e1 | #ifndef POOL_H
#define POOL_H
typedef struct MemoryPool MemoryPool;
/* The function that is called after a new block is added
start_item is the first item of the new made block */
typedef void MemoryPoolNewBlock(uint start_item);
/**
* Stuff for dynamic vehicles. Use the wrappers to access the MemoryPool
* please try to avoid manual calls!
*/
struct MemoryPool {
const char name[10]; //! Name of the pool (just for debugging)
const uint max_blocks; //! The max amount of blocks this pool can have
const uint block_size_bits; //! The size of each block in bits
const uint item_size; //! How many bytes one block is
MemoryPoolNewBlock *new_block_proc;
//!< Pointer to a function that is called after a new block is added
uint current_blocks; //! How many blocks we have in our pool
uint total_items; //! How many items we now have in this pool
byte **blocks; //! An array of blocks (one block hold all the items)
};
/**
* Those are the wrappers:
* CleanPool cleans the pool up, but you can use AddBlockToPool directly again
* (no need to call CreatePool!)
* AddBlockToPool adds 1 more block to the pool. Returns false if there is no
* more room
*/
void CleanPool(MemoryPool *array);
bool AddBlockToPool(MemoryPool *array);
/**
* Adds blocks to the pool if needed (and possible) till index fits inside the pool
*
* @return Returns false if adding failed
*/
bool AddBlockIfNeeded(MemoryPool *array, uint index);
static inline byte *GetItemFromPool(MemoryPool *pool, uint index)
{
assert(index < pool->total_items);
return (pool->blocks[index >> pool->block_size_bits] + (index & ((1 << pool->block_size_bits) - 1)) * pool->item_size);
}
#endif /* POOL_H */
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