vector tile_check_up;
vector tile_check_down;
float tile_check_size;
-float tile_check_cross(vector where);
-float tile_check_plus(vector where);
-float tile_check_star(vector where);
-var float tile_check(vector where);
+float tile_check_cross(entity this, vector where);
+float tile_check_plus(entity this, vector where);
+float tile_check_star(entity this, vector where);
+var float tile_check(entity this, vector where);
float movenode_stepsize;
vector movenode_stepup;