Finished Laser

Pygame/Space Invaders/laser.py

@@ -3,10 +3,28 @@ import pygame
 
 class Laser(pygame.sprite.Sprite):
     def __init__(self, pos, speed, screen_height, color='white'):
-        pass
+        """
+        Initializes the Laser class
+        :param pos: Position
+        :param speed: Speed
+        :param screen_height: Screen Height
+        :param color: Color
+        """
+        super().__init__()
+        self.image = pygame.Surface((4, 20))
+        self.image.fill(color)
+        self.rect = self.image.get_rect(center=pos)
+        self.speed = speed
+        self.y_constraint = screen_height
 
-    def destroy(self):
-        pass
+    def destroy_conditionally(self):
+        """
+        Destroys Laser when out of bounds in the y dimension
+        :return: None
+        """
+        if self.rect.y <= -50 or self.rect.y >= self.y_constraint + 50:
+            self.kill()
 
     def update(self):
-        pass
+        self.rect.y += self.speed
+        self.destroy_conditionally()