init

.venv/lib/python3.8/site-packages/pygame/examples/moveit.py

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+#!/usr/bin/env python
+""" pygame.examples.moveit
+
+This is the full and final example from the Pygame Tutorial,
+"How Do I Make It Move". It creates 10 objects and animates
+them on the screen.
+
+Note it's a bit scant on error checking, but it's easy to read. :]
+Fortunately, this is python, and we needn't wrestle with a pile of
+error codes.
+"""
+import os
+import pygame as pg
+
+main_dir = os.path.split(os.path.abspath(__file__))[0]
+
+# our game object class
+class GameObject:
+    def __init__(self, image, height, speed):
+        self.speed = speed
+        self.image = image
+        self.pos = image.get_rect().move(0, height)
+
+    def move(self):
+        self.pos = self.pos.move(self.speed, 0)
+        if self.pos.right > 600:
+            self.pos.left = 0
+
+
+# quick function to load an image
+def load_image(name):
+    path = os.path.join(main_dir, "data", name)
+    return pg.image.load(path).convert()
+
+
+# here's the full code
+def main():
+    pg.init()
+    screen = pg.display.set_mode((640, 480))
+
+    player = load_image("player1.gif")
+    background = load_image("liquid.bmp")
+
+    # scale the background image so that it fills the window and
+    #   successfully overwrites the old sprite position.
+    background = pg.transform.scale2x(background)
+    background = pg.transform.scale2x(background)
+
+    screen.blit(background, (0, 0))
+
+    objects = []
+    for x in range(10):
+        o = GameObject(player, x * 40, x)
+        objects.append(o)
+
+    while 1:
+        for event in pg.event.get():
+            if event.type in (pg.QUIT, pg.KEYDOWN):
+                return
+
+        for o in objects:
+            screen.blit(background, o.pos, o.pos)
+        for o in objects:
+            o.move()
+            screen.blit(o.image, o.pos)
+
+        pg.display.update()
+
+
+if __name__ == "__main__":
+    main()
+    pg.quit()