import colors
from polygon import *


class Floor(Polygon):
    """
    Subclass for polygons as floor tiles wich don't have collisions.
    """


    def __init__(self, *points, color=colors.DARK_RED):
        """Initilise 'self' with standard color 'DARK_RED'."""
        Polygon.__init__(self, *points, color=color)


    def draw_shadow(self, screen, offset, source, color=None):
        """Overide 'draw_shadow' to not draw a shadow."""
        pass


    def cut(self, source, portal):
        """
        Return 'self' but cut to fit in the view from 'source' though 'portal'.
        Makes use of 'Polygon.cut'.
        """

        rest = Polygon.cut(self, source, portal)
        if len(rest) > 2:
            return Floor(*rest, color=self.color)
        else:
            return Polygon()


    def dist_to(self, source):
        """Overide 'dist_to' to never cause collisions."""
        return float('inf')