def wall_walk(self, x, y, dx, dy):
f = 1.0/self.tilesize
for gx, gy, t, hv in grid_walk(x*f, y*f, (x+dx)*f, (y+dy)*f):
try:
yield self.tiles[gy, gx], x+dx*t, y+dy*t
except KeyError:
return
def wall_clip(self, x, y, dx, dy):
f = 1.0/self.tilesize
for gx, gy, t, hv in grid_walk(x*f, y*f, (x+dx)*f, (y+dy)*f):
try:
if self.tiles[gy, gx].is_wall:
return True
except KeyError:
return True
return False
def hits_wall(x, y):
for gx, gy, t, hv in grid_walk(x, y, lx, ly):
if t and (gx, gy) in self.walls:
return True
