(svn r4765) Add GetTileMaxZ(), which returns the height of the highest corner of a tile, and use it to simplify the code in a few places
/* $Id$ */
#ifndef THREAD_H
#define THREAD_H
typedef struct Thread Thread;
typedef void* (*ThreadFunc)(void*);
Thread* OTTDCreateThread(ThreadFunc, void*);
void* OTTDJoinThread(Thread*);
#endif /* THREAD_H */