add

Author: vangj

python/pygame/README.md

@@ -13,4 +13,5 @@ All images take from [craftpix](https://craftpix.net/).
 * [Bouncing Images](basic/bouncing-image.py): learn how to animate images
 * [Image Rotation](basic/image-rotation.py): learn how to rotate an image
 * [Sound](basic/bouncing-image-with-sound.py): learn how to play sound
-* [Key Events](basic/key-movement.py): learn how to listen for key events
+* [Key Events](basic/key-movement.py): learn how to listen for key events
+* [Mouse Movement](basic/mouse-movement.py): learn how to move a sprite with the mouse

python/pygame/basic/mouse-movement.py

@@ -0,0 +1,60 @@
+import os
+import sys
+
+import pygame
+from pygame.locals import *
+
+
+class Satyr(pygame.sprite.Sprite):
+    def __init__(self, position, scale=0.5):
+        pygame.sprite.Sprite.__init__(self)
+
+        img = pygame.image.load('./images/Satyr_01_Idle_000.png')
+        rect = img.get_rect(center=position)
+        w, h = rect.size[0], rect.size[1]
+        w, h = int(w * scale), int(h * scale)
+        img = pygame.transform.scale(img, (w, h))
+
+        rect = img.get_rect(center=position)
+        x = position[0] - int(rect.size[0] / 2.0)
+        y = position[1] - int(rect.size[1] / 2.0)
+
+        self.image = img
+        self.rect = rect
+        self.position = x, y
+
+    def draw(self, surface, position):
+        self.position = position[0] - self.rect.width / 2, position[1] - self.rect.height / 2
+        surface.blit(self.image, self.position)
+
+
+def start():
+    pygame.init()
+
+    FPS = 30
+    width = 400
+    height = 400
+    DISPLAYSURF = pygame.display.set_mode((width, height))
+    DISPLAYSURF.fill((255, 255, 255))
+    pygame.display.set_caption('Key Events')
+    fps_clock = pygame.time.Clock()
+
+    satyr = Satyr((200, 200), 0.25)
+
+    while True:
+        for event in pygame.event.get():
+            if event.type == QUIT:
+                pygame.quit()
+                sys.exit()
+
+        DISPLAYSURF.fill((255, 255, 255, 0))
+
+        satyr.draw(DISPLAYSURF, pygame.mouse.get_pos())
+
+        pygame.display.update()
+        fps_clock.tick(FPS)
+
+
+if __name__ == '__main__':
+    os.environ['SDL_VIDEO_CENTERED'] = '1'
+    start()