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import pygame
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from Praktikumsaufgaben.compute import matmul, rot_2D, transpose, rotate
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from game import Game
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EARTH_RADIUS = 30
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MOON_RADIUS = 10
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BLACK = (0, 0, 0)
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WHITE = (255, 255, 255)
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BLUE = (0, 0, 255)
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class Moon(Game):
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"""Der Mond kreist um die Erde."""
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def __init__(
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self,
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title: str = "Moon",
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fps: int = 60,
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size: tuple[int, int] = (640, 400),
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) -> None:
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"""Legt Startposition, Drehwinkel und Rotationsmatrix fest."""
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super().__init__(title, fps, size)
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# TODO: Startposition des Mondes festlegen
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self.position_moon = (100, 0)
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# TODO: Drehwinkel pro Bild festlegen
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self.theta = 0.001 # je grösser theta desto schneller dreht sich der mond
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# TODO: Rotationsmatrix berechnen
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self.rot_moon = rot_2D(self.theta)
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def update_game(self) -> bool:
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"""Dreht den Mond ein Stück weiter."""
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# TODO: Mondposition mit der Rotationsmatrix weiterdrehen
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point = transpose([list(self.position_moon)]) #koordinaten zur liste, transpose wandelt diese in zeilenmatrix um
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result = matmul(self.rot_moon, point) #multiplizieet die mondposition mit der rotationsmatrix
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self.position_moon = (result[0][0], result[1][0]) #speichert einf die nuee pos
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return True
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def draw_game(self) -> None:
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"""Zeichnet Erde und Mond."""
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# TODO: Bildschirm löschen
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self.screen.fill(BLACK)
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center_x = self.size[0] // 2
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center_y = self.size[1] // 2 #hiermit berchnen wir den mittelpunkt des fensters
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# TODO: Erde zeichnen
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pygame.draw.circle(
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self.screen,
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BLUE,
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(center_x, center_y),
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EARTH_RADIUS
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)
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# TODO: Mond zeichnen
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moon_x = center_x + self.position_moon[0] #zuerst die pos berechnen
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moon_y = center_y + self.position_moon[1] #abstand zur erde
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pygame.draw.circle(
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self.screen,
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WHITE,
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(int(moon_x), int(moon_y)),
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MOON_RADIUS
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)
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# TODO: Bild anzeigen
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pygame.display.flip()
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if __name__ == "__main__":
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# TODO: Moon-Objekt erzeugen und starten
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moon = Moon()
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moon.run()
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