Adding Player, movement, and drawing/updating functionality

main.py

@@ -2,20 +2,34 @@
 # the open-source pygame library
 # throughout this file
 import pygame
-from constants import *
+from constants import SCREEN_HEIGHT, SCREEN_WIDTH
+from player import Player
 
 def main():
     pygame.init()
-    print("Starting asteroids!")
-    print(f"Screen width: {SCREEN_WIDTH}")
-    print(f"Screen height: {SCREEN_HEIGHT}")
+    clock = pygame.time.Clock()
+    dt = 0
     screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
+    player = Player(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2)
+    updatable = []
+    drawable = []
+    updatable.append(player)
+    drawable.append(player)
 
     while True:
         for event in pygame.event.get():
             if event.type == pygame.QUIT:
                 return
-        pygame.Surface.fill(screen, (0, 0, 0))
+        screen.fill("black")
+        # limit the framerate to 60 FPS
+        dt = clock.tick(60) / 1000
+
+        for object in drawable:
+            object.draw(screen)
+        
+        for object in updatable:
+            object.update(dt)
+
         pygame.display.flip()
 
 if __name__ == "__main__":