Apollo, Game hinzugefügt und Moon überarbeitet

Moon.py

@@ -0,0 +1,64 @@
+import pygame
+
+from compute import matmul, rot_2D
+from game import Game
+
+EARTH_RADIUS = 30
+MOON_RADIUS = 10
+MOON_DISTANCE = 100.0
+MOON_ANGLE = 0.01
+
+BLACK = (0, 0, 0)
+BLUE = (0, 0, 255)
+GRAY = (200, 200, 200)
+
+
+class Moon(Game):
+    """Der Mond kreist um die Erde."""
+
+    def __init__(self, title="Moon", fps=60, size=(640, 400)):
+        super().__init__(title, fps, size)
+        self.center_x = size[0] // 2
+        self.center_y = size[1] // 2
+        self.init_positions()
+
+    def init_positions(self):
+        self.position_moon = (MOON_DISTANCE, 0.0)
+        self.rot_moon = rot_2D(MOON_ANGLE)
+
+    def rotate_point(self, position, rotation):
+        result = matmul(rotation, [[position[0]], [position[1]]])
+        return (result[0][0], result[1][0])
+
+    def update_game(self):
+        self.update_positions()
+        return True
+
+    def update_positions(self):
+        self.position_moon = self.rotate_point(self.position_moon, self.rot_moon)
+
+    def to_screen(self, position):
+        return (int(self.center_x + position[0]), int(self.center_y + position[1]))
+
+    def draw_game(self):
+        self.screen.fill(BLACK)
+        self.draw_scene()
+        pygame.display.flip()
+
+    def draw_scene(self):
+        self.draw_earth()
+        self.draw_moon()
+
+    def draw_earth(self):
+        pygame.draw.circle(
+            self.screen, BLUE, (self.center_x, self.center_y), EARTH_RADIUS
+        )
+
+    def draw_moon(self):
+        pygame.draw.circle(
+            self.screen, GRAY, self.to_screen(self.position_moon), MOON_RADIUS
+        )
+
+
+if __name__ == "__main__":
+    Moon().run()