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game.py

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+import pygame
+from pygame.sprite import Sprite
+from pygame.locals import (RLEACCEL,K_UP,K_DOWN,K_LEFT,K_RIGHT,K_ESCAPE,KEYDOWN,QUIT)
+pygame.init()
+clock = pygame.time.Clock()
+
+screen_width = 800
+screen_height = 600
+screen = pygame.display.set_mode((screen_width, screen_height))
+pygame.display.set_caption('My game')
+
+
+class Player:
+
+    def __init__ (self):
+        self.x = 200
+        self.y = 200
+
+        self.width = 50
+        self.height = 100
+        
+        self.speed = 3
+
+    def move(self, dx=0, dy=0):
+        self.x += dx * self.speed
+
+        if self.x - self.width/2 < 0:
+            self.x = self.width/2
+
+        if self.x + self.width/2 > screen_width:
+            self.x = screen_width - self.width/2
+        
+        self.y += dy * self.speed
+
+        if self.y - self.height/2 < 0:
+            self.y = self.height/2
+
+        if self.y + self.height/2 > screen_height:
+            self.y = screen_height - self.height/2
+    
+    def draw(self):
+        left_upper_x = self.x - self.width/2
+        left_upper_y = self.y - self.height/2
+        pygame.draw.rect(screen,(0, 0, 255),
+                         (round(left_upper_x),round(left_upper_y),self.width,self.height))
+# class Player(pygame.sprite.Sprite):
+#     def __init__(self):
+#         super().__init__()
+#         self.surf = pygame.Surface((75, 25))
+#         self.surf.fill((0, 0, 0))
+#         self.rect = self.surf.get_rect()
+
+# class Player(pygame.sprite.Sprite):
+#     def __init__(self):
+#         super(Player, self).__init__()
+#         self.surf = pygame.transform.scale(
+#         pygame.image.load("rat.png").convert(),(50, 36))
+#         self.surf.set_colorkey((0, 0, 0), RLEACCEL)
+#         self.rect = self.surf.get_rect()
+
+
+
+
+
+done = False
+player = Player()
+#all_sprites = pygame.sprite.Group()
+#all_sprites.add(player)
+while not done:
+    
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            done = True
+
+
+    pressed_keys = pygame.key.get_pressed()
+
+    if pressed_keys[pygame.K_LEFT]:
+        player.move(dx=-1)
+    elif pressed_keys[pygame.K_RIGHT]:
+        player.move(dx=+1)
+        
+    if pressed_keys[pygame.K_UP]:
+        player.move(dy=-1)
+    elif pressed_keys[pygame.K_DOWN]:
+        player.move(dy=+1)
+    
+
+    
+    screen.fill((0, 0, 0))
+    pygame.display.flip()
+    clock.tick(60)
+
+pygame.quit()
+    
+