def generate_sphere_sprite(radius, color, scale, layer=None):
scaled_radius = int(round(radius * scale))
if scaled_radius <= 0:
scaled_radius = 1
sprite = Sprite()
if layer is not None:
sprite.layer = layer
width = height = scaled_radius * 2
surface = Surface((width, height))
surface.set_colorkey((0, 0, 0))
draw.circle(surface, color, (scaled_radius, scaled_radius), scaled_radius, 0)
sprite.image = surface
return sprite
def build_ship_sprite(size=None, scale=None, orientation=None, heading=None, main_engine=False, retro_engine=False):
ship_height = int(round(size * scale))
if ship_height <= 0:
ship_height = 9
width = ship_height / 3
flame_height = ship_height / 5
image_width = width
image_height = ship_height + (flame_height * 2)
sprite = Sprite()
sprite.layer = 10
surface = Surface((image_width, image_height))
surface.set_colorkey((0, 0, 0))
ship_top = flame_height
ship_bottom = image_height - flame_height
ship_left = 0
ship_right = image_width
ship_middle = image_width / 2
ship_triangle = [(ship_middle, ship_top), (ship_left, ship_bottom), (ship_right, ship_bottom)]
draw.polygon(surface, (255, 255, 255), ship_triangle)
if main_engine:
bottom_flame = [(ship_middle, ship_bottom), (0, image_height), (image_width, image_height)]
draw.polygon(surface, (255, 255, 0), bottom_flame)
if retro_engine:
top_flame = [(ship_middle, ship_top), (0, 0), (image_width, 0)]
draw.polygon(surface, (255, 255, 0), top_flame)
rotated_surface = transform.rotate(surface, -orientation)
sprite.image = rotated_surface
return sprite
