--- a/command.c Wed Jan 05 14:20:23 2005 +0000
+++ b/command.c Wed Jan 05 14:39:48 2005 +0000
@@ -312,6 +312,17 @@
CmdReplaceVehicle, /* 114 */
};
+/* This function range-checks a cmd, and checks if the cmd is not NULL */
+bool IsValidCommand(int cmd)
+{
+ cmd = cmd & 0xFF;
+
+ if (cmd < 0 || cmd >= lengthof(_command_proc_table) || _command_proc_table[cmd] == NULL)
+ return false;
+
+ return true;
+}
+
int32 DoCommandByTile(TileIndex tile, uint32 p1, uint32 p2, uint32 flags, uint procc)
{
return DoCommand(GET_TILE_X(tile)*16, GET_TILE_Y(tile)*16, p1, p2, flags, procc);