// CheckMovement checks if a creature can move to this tile
func (t *Tile) CheckMovement(_creature pul.ICreature, _dir int) int {
movement := _creature.GetMovement()
blocking := t.Blocking
if blocking != TILEBLOCK_WALK {
if blocking == TILEBLOCK_BLOCK ||
(blocking == TILEBLOCK_SURF && movement != MOVEMENT_SURF) ||
(blocking == TILEBLOCK_TOP && _dir == DIR_SOUTH) ||
(blocking == TILEBLOCK_BOTTOM && _dir == DIR_NORTH) ||
(blocking == TILEBLOCK_LEFT && _dir == DIR_EAST) ||
(blocking == TILEBLOCK_RIGHT && _dir == DIR_WEST) ||
(blocking == TILEBLOCK_TOPLEFT && (_dir == DIR_EAST || _dir == DIR_SOUTH)) ||
(blocking == TILEBLOCK_TOPRIGHT && (_dir == DIR_WEST || _dir == DIR_SOUTH)) ||
(blocking == TILEBLOCK_BOTTOMLEFT && (_dir == DIR_EAST || _dir == DIR_NORTH)) ||
(blocking == TILEBLOCK_BOTTOMRIGHT && (_dir == DIR_WEST || _dir == DIR_NORTH)) {
return RET_NOTPOSSIBLE
}
}
return RET_NOERROR
}