refactor: Game class

game.py

@@ -0,0 +1,41 @@
+import pygame
+
+GAME_TITLE = 'WMICraft'
+WINDOW_HEIGHT = 900
+WINDOW_WIDTH = 900
+GRID_CELL_PADDING = 3
+GRID_CELL_WIDTH = 42
+GRID_CELL_HEIGHT = 42
+ROWS = 20
+COLUMNS = 20
+FPS_COUNT = 60
+GREEN = (0, 255, 0)
+
+
+class Game:
+    def __init__(self):
+        pygame.init()
+        pygame.display.set_caption(GAME_TITLE)
+        pygame.display.set_icon(pygame.image.load('resources/icons/sword.png'))
+        self.screen = pygame.display.set_mode((WINDOW_HEIGHT, WINDOW_WIDTH))
+        self.clock = pygame.time.Clock()
+
+    def start(self):
+        running = True
+        while running:
+            for event in pygame.event.get():
+                if event.type == pygame.QUIT:
+                    running = False
+            self.draw_grid()
+            pygame.display.update()
+            self.clock.tick(FPS_COUNT)
+        pygame.quit()
+
+    def draw_grid(self):
+        for row in range(ROWS):
+            for column in range(COLUMNS):
+                box_rect = [(GRID_CELL_PADDING + GRID_CELL_WIDTH) * column + GRID_CELL_PADDING,
+                            (GRID_CELL_PADDING + GRID_CELL_HEIGHT) * row + GRID_CELL_PADDING,
+                            GRID_CELL_WIDTH,
+                            GRID_CELL_HEIGHT]
+                pygame.draw.rect(self.screen, GREEN, box_rect)

main.py

@@ -1,43 +1,5 @@
-import pygame
-
-pygame.init()
-
-GAME_TITLE = 'WMICraft'
-WINDOW_HEIGHT = 900
-WINDOW_WIDTH = 900
-GRID_CELL_PADDING = 3
-GRID_CELL_WIDTH = 42
-GRID_CELL_HEIGHT = 42
-GREEN = (0, 255, 0)
-
-screen = pygame.display.set_mode((WINDOW_HEIGHT, WINDOW_WIDTH))
-pygame.display.set_caption(GAME_TITLE)
-icon = pygame.image.load('resources/icons/sword.png')
-pygame.display.set_icon(icon)
-
-
-def draw_grid():
-    for row in range(20):
-        for column in range(20):
-            box_rect = [(GRID_CELL_PADDING + GRID_CELL_WIDTH) * column + GRID_CELL_PADDING,
-                        (GRID_CELL_PADDING + GRID_CELL_HEIGHT) * row + GRID_CELL_PADDING,
-                        GRID_CELL_WIDTH,
-                        GRID_CELL_HEIGHT]
-            pygame.draw.rect(screen, GREEN, box_rect)
-
-
-def main():
-    running = True
-
-    while running:
-        for event in pygame.event.get():
-            if event.type == pygame.QUIT:
-                running = False
-        draw_grid()
-        pygame.display.update()
-
-    pygame.quit()
-
+from game import Game
 
 if __name__ == '__main__':
-    main()
+    game = Game()
+    game.start()