1 files changed, 32 insertions, 0 deletions
diff --git a/anim/DrawableObjectTests/boxes.py b/anim/DrawableObjectTests/boxes.py
new file mode 100644
index 0000000..5b444b6
--- /dev/null
+++ b/anim/DrawableObjectTests/boxes.py
@@ -0,0 +1,32 @@
+import pygame
+
+class UpDownBox(pygame.sprite.Sprite):
+    def __init__(self, imagesList, initial_position):
+        pygame.sprite.Sprite.__init__(self)
+        self.images = imagesList
+        self.listLen = len(imagesList)
+        self.listPos = 0
+        self.image = imagesList[self.listPos]
+        self.rect = self.image.get_rect()
+        self.rect.topleft = initial_position
+        self.going_down = True # Start going downwards
+        self.next_update_time = 0 # update() hasn't been called yet.
+
+    def update(self, current_time, bottom):
+        # Update every 10 milliseconds = 1/100th of a second.
+        if self.next_update_time < current_time:
+
+            # If we're at the top or bottom of the screen, switch directions.
+            if self.rect.bottom == bottom - 1: self.going_down = False
+            elif self.rect.top == 0: self.going_down = True
+     
+            # Move our position up or down by one pixel
+            if self.going_down: self.rect.top += 1
+            else: self.rect.top -= 1
+
+            if self.listPos < self.listLen - 1:
+               self.listPos += 1
+            else:
+               self.listPos = 0
+            self.image = self.images[self.listPos]
+            self.next_update_time = current_time