(svn r1375) -Fix: [1050990] Buying trains sometimes accounted for incorrectly. Was the result of the cost getting reset in a recursive call of docommand. That is fixed. In addition all cost-commands are typed explicitely. Please do not forget to do so or your costs will be credited to construction if you are unlucky.
#include "stdafx.h"
#include "ttd.h"
#include "map.h"
uint _map_log_x = TILE_X_BITS;
uint _map_log_y = TILE_Y_BITS;
#define MAP_SIZE ((1 << TILE_X_BITS) * (1 << TILE_Y_BITS))
byte _map_type_and_height [MAP_SIZE];
byte _map5 [MAP_SIZE];
byte _map3_lo [MAP_SIZE];
byte _map3_hi [MAP_SIZE];
byte _map_owner [MAP_SIZE];
uint16 _map2 [MAP_SIZE];
byte _map_extra_bits [MAP_SIZE / 4];