added enemy spawn in groups

pygame/space_invaders/source/space_invaders.py

@@ -124,7 +124,14 @@ class Player(Ship):
 				for obj in objs:
 					if missile.collision(obj):
 						objs.remove(obj)
-						self.score += 50
+
+						# different scores for different colored enemies
+						if obj.color == "lime":
+							self.score += 10
+						elif obj.color == "cyan":
+							self.score += 20
+						elif obj.color == "magenta":
+							self.score += 30
 						if missile in self.missiles:
 							self.missiles.remove(missile)
 
@@ -141,6 +148,7 @@ class Enemy(Ship):
 		self.ship_img = self.COLOR_MAP[color]
 		self.missile_img = ENEMY_MISSILE
 		self.mask = pygame.mask.from_surface(self.ship_img)
+		self.color = color
 
 	def move(self, vel_x: int, vel_y: int) -> None:
 		self.x += vel_x
@@ -158,12 +166,10 @@ def main() -> None:
 	player_vel = 7
 	player_missile_vel = 7
 	enemy_x_vel = 2
-	vel_y = 0
 	vel_x = enemy_x_vel
+	vel_y = 0
 	enemy_missile_vel = 4
-	# velocities = [[5, 0], [0, 2], [-5, 0], [-5, 0], [0, 2], [5, 0]]
+	last_enemy_shot = 0
-	# velocities = {"down": [0, 2], "right": [2, 0], "left": [-5, 0]}
-	# directions = ["right", "down", "left", "left", "down", "right"]
 
 	player = Player(WIDTH / 2, 650)
 
@@ -200,26 +206,23 @@ def main() -> None:
 
 		# stop game
 		if lost:
-			if lost_count > FPS * 3:
+			if lost_count > FPS * 3:  # wait for 3 sec
 				run = False
 			else:
 				continue
 
+		# spawn enemies
 		if len(enemies) == 0:
 			level += 1
 			margin = 75
-			width = 75
+			for x in range(margin, WIDTH - margin, margin):
-			for x in range(margin, WIDTH - margin, width):
+				for y in range(margin, int(HEIGHT / 2), margin):
-				for y in range(margin, int(HEIGHT / 2), width):
+					if y == margin:
-					
-					match y:
-						case 75:
 						color = "magenta"
-						case 150:
+					elif y == 2 * margin:
 						color = "cyan"
-						case 300:
+					elif y == 4 * margin:
 						color = "lime"
-
 					enemy = Enemy(x, y, color)
 					enemies.append(enemy)
 
@@ -242,37 +245,23 @@ def main() -> None:
 
 		# enemies action
 
-		# for _ in range(len(directions)):
-		# 	if pygame.time.get_ticks() % 100 == 0:
-		# 		for direction in directions:
-		# 			vel_x, vel_y = velocities[direction]
-		# 			for enemy in enemies[:]:
-		# 				enemy.move(vel_x, vel_y)
-
-		# if pygame.time.get_ticks() % 10 == 0:
-		# 	for vel_x, vel_y in velocities:
-		# 		for enemy in enemies[:]:
-		# 			enemy.move(vel_x, vel_y)
-
 		for enemy in enemies[:]:
-			# enemy.move(0, enemy_y_vel)
-			# enemy.move(randint(-enemy_x_vel, enemy_x_vel), randint(0, enemy_y_vel))
 			if enemy.x >= WIDTH - enemy.get_width():
 				vel_x = -enemy_x_vel
 			elif enemy.x <= 0:
 				vel_x = enemy_x_vel
+
 			enemy.move(vel_x, vel_y)
 
 			enemy.move_missiles(enemy_missile_vel, player)
 
-			if randrange(0, 7 * FPS) == 1:
-				enemy.shoot()
-				pass
-
 			if collide(enemy, player) or (enemy.y + enemy.get_height() > HEIGHT):
 				player.score -= 10
 				player.lives -= 1
 				enemies.remove(enemy)
+		if pygame.time.get_ticks() - last_enemy_shot > 2000:
+			choice(enemies).shoot()
+			last_enemy_shot = pygame.time.get_ticks()
 
 		player.move_missiles(-player_missile_vel, enemies)
 

pygame/space_invaders/source/space_invaders_old.py

@@ -1,121 +0,0 @@
-# Author - Kristiāns Francis Cagulis
-# Date - 25.02.2022
-# Title - Space invaders
-
-import pygame
-import math
-import random
-
-BLUE = (16, 16, 69)
-
-# init game
-pygame.init()
-pygame.display.set_caption("Space invaders")
-
-# 32x32 game icon
-icon = pygame.image.load("icons/space_invader_enemy_icon.png")
-pygame.display.set_icon(icon)
-# 64x64 player icon
-player = pygame.image.load("icons/space_shuttle_player_icon.png")
-player_x = 370
-player_y = 480
-player_x_change = 0
-
-# 64x64 enemy icon
-enemy = pygame.image.load("icons/space_invader_enemy_icon.png")
-enemy_x = random.randint(0, 736)
-enemy_y = random.randint(50, 150)
-enemy_x_change = .2
-enemy_y_change = 10
-
-
-# missile
-missile = pygame.image.load("icons/fireball_icon.png")
-missile_x = 0
-missile_y = 480  # player_y
-missile_x_change = 0
-missile_y_change = .50
-missile_state = "ready"
-
-screen = pygame.display.set_mode((800, 600))
-
-
-def display_player(x, y):
-	screen.blit(player, (x, y))
-
-
-def display_enemy(x, y):
-	screen.blit(enemy, (x, y))
-
-
-def display_missile(x, y):
-	global missile_state
-	missile_state = "fire"
-	screen.blit(missile, (x + 16, y - 10))
-
-
-def is_collision(enemy_x, enemy_y, missile_x, missile_y):
-	distance = math.sqrt(math.pow(enemy_x - missile_x, 2) + math.pow(enemy_y - missile_y, 2))
-	if distance < 27:
-		return True
-	else:
-		return False
-
-
-running = True
-
-while running:
-	screen.fill(BLUE)
-
-	# change player pos
-	for event in pygame.event.get():
-		if event.type == pygame.QUIT:
-			running = False
-		if event.type == pygame.KEYDOWN:
-			if event.key == pygame.K_LEFT:
-				player_x_change = -.5
-			if event.key == pygame.K_RIGHT:
-				player_x_change = .5
-			if event.key == pygame.K_SPACE:
-				if missile_state == "ready":
-					missile_x = player_x
-					# missile_state = "fire"
-					display_missile(missile_x, missile_y)
-
-		if event.type == pygame.KEYUP:
-			if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
-				player_x_change = 0
-
-	# player pos
-	if player_x + player_x_change > 0 and player_x + player_x_change < 736:
-		player_x += player_x_change
-
-	enemy_x += enemy_x_change
-	enemy_y += enemy_y_change
-
-	# enemy pos
-	if enemy_x >= 736:
-		enemy_x_change = -.2
-	elif enemy_x <= 0:
-		enemy_x_change = .2
-	if enemy_y >= 336:
-		enemy_y_change = -.1
-	elif enemy_y <= 50:
-		enemy_y_change = .1
-
-	collision = is_collision(enemy_x, enemy_y, missile_x, missile_y)
-	if collision:
-		missile_y = 480
-		missile_state = "ready"
-		# score ...
-
-	display_enemy(enemy_x, enemy_y)
-
-	if missile_y <= 0:
-		missile_state = "ready"
-	if missile_state == "fire":
-		display_missile(missile_x, missile_y)
-		missile_y -= missile_y_change
-
-	display_player(player_x, player_y)
-	pygame.display.update()