Update main.py

main.py

@@ -13,6 +13,7 @@
 # Background
 background = pygame.image.load('background.png')
 
+
 # Sound
 mixer.music.load("background.wav")
 mixer.music.play(-1)
@@ -98,86 +99,127 @@ def isCollision(enemyX, enemyY, bulletX, bulletY):
     else:
         return False
 
+running = True
 
 # Game Loop
-running = True
-while running:
-
-    # RGB = Red, Green, Blue
-    screen.fill((0, 0, 0))
-    # Background Image
-    screen.blit(background, (0, 0))
-    for event in pygame.event.get():
-        if event.type == pygame.QUIT:
-            running = False
-
-        # if keystroke is pressed check whether its right or left
-        if event.type == pygame.KEYDOWN:
-            if event.key == pygame.K_LEFT:
-                playerX_change = -5
-            if event.key == pygame.K_RIGHT:
-                playerX_change = 5
-            if event.key == pygame.K_SPACE:
-                if bullet_state is "ready":
-                    bulletSound = mixer.Sound("laser.wav")
-                    bulletSound.play()
-                    # Get the current x cordinate of the spaceship
-                    bulletX = playerX
-                    fire_bullet(bulletX, bulletY)
-
-        if event.type == pygame.KEYUP:
-            if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
-                playerX_change = 0
-
-    # 5 = 5 + -0.1 -> 5 = 5 - 0.1
-    # 5 = 5 + 0.1
-
-    playerX += playerX_change
-    if playerX <= 0:
-        playerX = 0
-    elif playerX >= 736:
-        playerX = 736
-
-    # Enemy Movement
-    for i in range(num_of_enemies):
-
-        # Game Over
-        if enemyY[i] > 440:
-            for j in range(num_of_enemies):
-                enemyY[j] = 2000
-            game_over_text()
-            break
-
-        enemyX[i] += enemyX_change[i]
-        if enemyX[i] <= 0:
-            enemyX_change[i] = 4
-            enemyY[i] += enemyY_change[i]
-        elif enemyX[i] >= 736:
-            enemyX_change[i] = -4
-            enemyY[i] += enemyY_change[i]
-
-        # Collision
-        collision = isCollision(enemyX[i], enemyY[i], bulletX, bulletY)
-        if collision:
-            explosionSound = mixer.Sound("explosion.wav")
-            explosionSound.play()
+def main():
+
+    # global variables
+    global playerImg 
+    global playerX 
+    global playerY 
+    global playerX_change 
+    global bulletX
+    global bulletY
+    global bullet_state
+    global score_value
+    global running
+
+
+    while running:
+
+        # RGB = Red, Green, Blue
+        screen.fill((0, 0, 0))
+        # Background Image
+        screen.blit(background, (0, 0))
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                running = False
+
+            # if keystroke is pressed check whether its right or left
+            if event.type == pygame.KEYDOWN:
+                if event.key == pygame.K_LEFT:
+                    playerX_change = -5
+                if event.key == pygame.K_RIGHT:
+                    playerX_change = 5
+                if event.key == pygame.K_SPACE:
+                    if bullet_state is "ready":
+                        bulletSound = mixer.Sound("laser.wav")
+                        bulletSound.play()
+                        # Get the current x cordinate of the spaceship
+                        bulletX = playerX
+                        fire_bullet(bulletX, bulletY)
+
+            if event.type == pygame.KEYUP:
+                if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
+                    playerX_change = 0
+
+        # 5 = 5 + -0.1 -> 5 = 5 - 0.1
+        # 5 = 5 + 0.1
+
+        playerX += playerX_change
+        if playerX <= 0:
+            playerX = 0
+        elif playerX >= 736:
+            playerX = 736
+
+        # Enemy Movement
+        for i in range(num_of_enemies):
+
+            # Game Over
+            if enemyY[i] > 440:
+                for j in range(num_of_enemies):
+                    enemyY[j] = 2000
+                game_over_text()
+                break
+
+            enemyX[i] += enemyX_change[i]
+            if enemyX[i] <= 0:
+                enemyX_change[i] = 4
+                enemyY[i] += enemyY_change[i]
+            elif enemyX[i] >= 736:
+                enemyX_change[i] = -4
+                enemyY[i] += enemyY_change[i]
+
+            # Collision
+            collision = isCollision(enemyX[i], enemyY[i], bulletX, bulletY)
+            if collision:
+                explosionSound = mixer.Sound("explosion.wav")
+                explosionSound.play()
+                bulletY = 480
+                bullet_state = "ready"
+                score_value += 1
+                enemyX[i] = random.randint(0, 736)
+                enemyY[i] = random.randint(50, 150)
+
+            enemy(enemyX[i], enemyY[i], i)
+
+        # Bullet Movement
+        if bulletY <= 0:
             bulletY = 480
             bullet_state = "ready"
-            score_value += 1
-            enemyX[i] = random.randint(0, 736)
-            enemyY[i] = random.randint(50, 150)
-
-        enemy(enemyX[i], enemyY[i], i)
-
-    # Bullet Movement
-    if bulletY <= 0:
-        bulletY = 480
-        bullet_state = "ready"
 
-    if bullet_state is "fire":
-        fire_bullet(bulletX, bulletY)
-        bulletY -= bulletY_change
+        if bullet_state is "fire":
+            fire_bullet(bulletX, bulletY)
+            bulletY -= bulletY_change
+
+        player(playerX, playerY)
+        show_score(textX, testY)
+        pygame.display.update()
+
+
+ def menu_screen():
+    running = True
+    clock = pygame.time.Clock()
+
+    while running:
+        clock.tick(60)
+        screen.fill((0, 0, 50))
+        font = pygame.font.SysFont("comicsans", 60)
+        pygame.draw.rect(screen, (0, 0, 200), (270, 200, 280, 100))
+        text = font.render("Click to Play!", 1, (255,0,0))
+        screen.blit(text, (280,230))
+        pygame.display.update()
+
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                pygame.quit()
+                running = False
+            if event.type == pygame.MOUSEBUTTONDOWN:
+                running = False
+
+    main()
+
+while True:
+    menu_screen()
 
-    player(playerX, playerY)
-    show_score(textX, testY)
-    pygame.display.update()