(svn r2168) - Fix: Various stages of invisible trains, and wrong v->u.rail.track combinations. When a vehicle was sold its (possibly) assigned road slot for multislot was not cleared, thus resulting in a bug confusion. This should fix [ 1178520 ] Assertion failure in ai.c (invalid v->u.rail.track). With big thanks to TrueLight for the demo-recording patch, BJH for the wonderful savegame, Hackykid for his brilliant suggestions of the problem and Celestar for... ehm, making it all possible ;p
#ifndef DEBUG_H
#define DEBUG_H
#ifdef NO_DEBUG_MESSAGES
#define DEBUG(name, level)
#else
#define DEBUG(name, level) if (level == 0 || _debug_ ## name ## _level >= level) debug
extern int _debug_ai_level;
extern int _debug_grf_level;
extern int _debug_map_level;
extern int _debug_misc_level;
extern int _debug_ms_level;
extern int _debug_net_level;
extern int _debug_spritecache_level;
extern int _debug_oldloader_level;
#endif
void CDECL debug(const char *s, ...);
void SetDebugString(const char *s);
#endif