[PyGame] Waiting screen until user input - PiBooth

[attractalderman]

It's not necessary, in my opinion, to compute every ray point. As each point is calculated, I would review it and halt when a collision is found. basket random

def illuminate_block(self, blocks, ray_point):
    """ Find first block that collides with ray_point,  Returns block or None """
    for block in blocks:
        if block[1].rect.collidepoint(ray_point):
            block[1].illuminated = True
            return block
    return None
   
def cast_rays(self):
    cx = self.rect.centerx
    cy = self.rect.centery
    blocks = []
    for b in self.game.level.block_dict.values():
        b.illuminated = False
        # Cull the block list here so it doesn't have to happen for each ray point.
        if abs(b[0][0] - cx) < 200 and abs(b[0][1] - cy) < 200:
            blocks.append[b]
    for ray in range(0, 360, 20):
        # Do expensive sin and cos once per ray
        sin_ray = math.sin(ray)
        cos_ray = math.cos(ray)
        for depth in range(20, 100, 5):
            ray_point = (cx - sin_ray * depth, cy + cos_ray * depth)
            if self.illuminate_block(blocks, ray_point) is not None:
                break

There are pygame routines that can do the task for you if they are sprites.