RainbowSprite, shadowed text

pgfw/Sprite.py

@@ -10,6 +10,7 @@ from pygame.locals import *
 
 from Animation import Animation
 from Vector import Vector
+from extension import get_hue_shifted_surface
 
 class Sprite(Animation):
 
@@ -444,3 +445,11 @@ class BlinkingSprite(Sprite):
 
     def blink(self):
         self.toggle_hidden()
+
+
+class RainbowSprite(Sprite):
+
+    def __init__(self, parent, image, hue_shift=8, framerate=None):
+        Sprite.__init__(self, parent, framerate)
+        for hue in xrange(0, 360, hue_shift):
+            self.add_frame(get_hue_shifted_surface(image, hue))

pgfw/extension.py

@@ -161,3 +161,19 @@ def fill_tile(surface, tile):
     for x in xrange(0, surface.get_width(), tile.get_width()):
         for y in xrange(0, surface.get_height(), tile.get_height()):
             surface.blit(tile, (x, y))
+
+def get_shadowed_text(text, font, offset, color, antialias=True, shadow_color=(0, 0, 0),
+                      colorkey=(255, 0, 255)):
+    foreground = font.render(text, antialias, color)
+    background = font.render(text, antialias, shadow_color)
+    alpha = SRCALPHA if antialias else 0
+    surface = Surface((foreground.get_width() + offset[0],
+                       foreground.get_height() + offset[1]), alpha)
+    if not antialias:
+        surface.set_colorkey(colorkey)
+        surface.fill(colorkey)
+    surface.blit(background, ((abs(offset[0]) + offset[0]) / 2,
+                              (abs(offset[1]) + offset[1]) / 2))
+    surface.blit(foreground, ((abs(offset[0]) - offset[0]) / 2,
+                              (abs(offset[1]) - offset[1]) / 2))
+    return surface