Lösung der Hausaufgabe

game.py

@@ -30,6 +30,8 @@ class Game:
 
         self.item_rect = pygame.Rect(60, 40, 10, 10)
 
+        self.flashlight_rect = (self.player_pos, 30)
+
         self.flashlight = 0
 
         self.color_item = (0, 0, 0)
@@ -54,7 +56,7 @@ class Game:
                         self.running = False
 
             # Player-Draw
-            self.flashlight = pygame.draw.circle(self.display, (255, 255, 255, 0), self.player_pos, 30)
+            self.flashlight = pygame.draw.circle(self.display, (255, 255, 255, 0), self.flashlight_rect[0], self.flashlight_rect[1])
 
             pygame.draw.rect(self.display, self.color_item, self.item_rect)
 
@@ -71,10 +73,11 @@ class Game:
             if keys[pygame.K_d]:
                 self.player_pos.x += 300 * self.dt
 
-            if not self.flashlight.colliderect(self.item_rect):
-                self.color_item = (0,0,0)
-            else:
+
+            if self.rect_circle_collision(self.item_rect, self.flashlight_rect):
                 self.color_item = (0, 0, 255)
+            else:
+                self.color_item = (0, 0, 0)
             
             self.screen.blit(
                 pygame.transform.scale(self.display, self.screen.get_size())
@@ -83,6 +86,26 @@ class Game:
             pygame.display.update()
             self.dt = self.clock.tick(60) / 3000
 
+    def rect_circle_collision(self, rect, circle):
+        rect_x, rect_y, rect_w, rect_h = rect
+
+        circle_x = circle[0][0]
+        circle_y = circle[0][1]
+        circle_r = circle[1]
+
+
+        # Calculate the closest point on the rectangle to the center of the circle
+        closest_x = max(rect_x, min(circle_x, rect_x + rect_w))
+        closest_y = max(rect_y, min(circle_y, rect_y + rect_h))
+
+        # Calculate the distance between the center of the circle and the closest point on the rectangle
+        dx = circle_x - closest_x
+        dy = circle_y - closest_y
+        distance = (dx ** 2 + dy ** 2) ** 0.5
+
+        return distance <= circle_r
+
+
 
 game = Game()
 game.run()

test.py

@@ -0,0 +1,30 @@
+import pygame
+
+
+def rect_circle_collision(rect, circle):
+    rect_x, rect_y, rect_w, rect_h = rect
+    circle_x, circle_y, circle_r = circle
+
+    # Calculate the closest point on the rectangle to the center of the circle
+    closest_x = max(rect_x, min(circle_x, rect_x + rect_w))
+    closest_y = max(rect_y, min(circle_y, rect_y + rect_h))
+
+    # Calculate the distance between the center of the circle and the closest point on the rectangle
+    dx = circle_x - closest_x
+    dy = circle_y - closest_y
+    distance = (dx ** 2 + dy ** 2) ** 0.5
+
+    return distance <= circle_r
+
+
+# Example usage
+pygame.init()
+rect = (100, 100, 200, 200)  # (x, y, width, height)
+circle = (150, 150, 50)  # (x, y, radius)
+
+if rect_circle_collision(rect, circle):
+    print("Collision detected!")
+else:
+    print("No collision.")
+
+pygame.quit()

versuche-python-hausaugabe.txt

@@ -0,0 +1,2 @@
+1. "pygame.sprite.collide_mask(self.flashlight ,self.item_rect)..." = Ergebnis das selbe wie "self.flashlight.colliderect(self.item_rect)..."
+2. Neue Methode "rect_circle_collision" mit den Parametern "rect, circle" womit das mathematisch berechnet wird was ich nicht verstehe + die prüfung mit self.item_rect und self.flashlight_rect, welches neu hinzugefügt wurde. Quelle: https://coderivers.org/blog/see-if-rect-collides-with-circle-python/