Killing the Enemy
Now we want to kill the enemy when the player jumps on top of it. For this, we will check if the bottom other player is equal to the top of the enemy or not. If it is equal then we will remove the layer sprite.
- For this first, we will store the coordinate of the bottom of the player in a variable.
Syntax:
x = int(self.player_sprite.center_y – 14)
- Similarly the coordinate of the top of the enemy in a different variable.
Syntax:
y = int(self.enemy.center_y + 25)
- Then, if x and y are equal and the enemy and player are colliding then we will remove our enemy sprite.
Syntax:
if x == y:
self.enemy.remove_from_sprite_lists()
Example: Killing an enemy using Arcade
Python3
# Importing arcade module import arcade # Creating MainGame class class MainGame(arcade.Window): def __init__(self): super().__init__(600, 600, title="Player Movement") # Initializing a variable to store # the velocity of the player self.vel_x = 0 # Creating variable for Camera self.camera = None # Creating variable to store current score self.score = 0 # Creating variable to move the enemy self.enemy_move = 2 # Creating variable for enemy sprite self.enemy = None # Creating scene object self.scene = None # Creating variable to store player sprite self.player = None # Creating variable for our game engine self.physics_engine = None # Creating on_draw() function to draw on the screen def on_draw(self): arcade.start_render() # Drawing the text arcade.draw_text('Score :- '+str(self.score), self.player_sprite.center_x - 500 / 2, self.player_sprite.center_y + 200, arcade.color.WHITE, 30, 5000, 'left') # Using the camera self.camera.use() # Drawing our scene self.scene.draw() def setup(self): # Initialize Scene object self.scene = arcade.Scene() # Using Camera() function self.camera = arcade.Camera(600, 600) # Loading enemy sprite self.enemy = arcade.Sprite("Enemy.png", 1) # Initializing the starting coordinates self.enemy.center_x = 500 self.enemy.center_y = 110 # Adding the enemy sprite in the scene self.scene.add_sprite("Enemy", self.enemy) # Creating different sprite lists self.scene.add_sprite_list("Player") self.scene.add_sprite_list("Platforms", use_spatial_hash=True) # Adding player sprite self.player_sprite = arcade.Sprite("Player.png", 1) # Adding coordinates for the center of the sprite self.player_sprite.center_x = 64 self.player_sprite.center_y = 90 # Adding Sprite in our scene self.scene.add_sprite("Player", self.player_sprite) # Adding platform sprite according to level platform = arcade.Sprite(f"Platform.png", 1) # Adding coordinates for the center of the platform platform.center_x = 300 platform.center_y = 32 self.scene.add_sprite("Platforms", platform) # Creating Physics engine self.physics_engine = arcade.PhysicsEnginePlatformer( self.player_sprite, self.scene.get_sprite_list("Platforms"), 0.5 ) # Creating on_update function to # update the x coordinate def on_update(self, delta_time): # Moving the position of enemy self.enemy.center_x += self.enemy_move # Changing the direction of enemy movement if self.enemy.center_x > 500 or self.enemy.center_x < 160: self.enemy_move *= -1 # Checking if the enemy is colliding with player or not enemy_collide = arcade.check_for_collision_with_list( self.player_sprite, self.scene.get_sprite_list("Enemy") ) # Looping through each enemy and removing the player if colliding for enemy in enemy_collide: # Checking the top of enemy and bottom of player x = int(self.player_sprite.center_y - 14) y = int(self.enemy.center_y + 25) if x == y: self.enemy.remove_from_sprite_lists() else: # Remove the coin self.player_sprite.remove_from_sprite_lists() # Changing x coordinate of player self.player_sprite.center_x += self.vel_x * delta_time # Updating the physics engine to move the player self.physics_engine.update() # Calling the camera_move function self.camera_move() # Creating function to change the velocity # when button is pressed def on_key_press(self, symbol, modifier): # Checking the button pressed # and changing the value of velocity if symbol == arcade.key.LEFT: self.vel_x = -300 elif symbol == arcade.key.RIGHT: self.vel_x = 300 elif symbol == arcade.key.UP: if self.physics_engine.can_jump(): self.player_sprite.change_y = 15 # Creating function to change the velocity # when button is released def on_key_release(self, symbol, modifier): # Checking the button released # and changing the value of velocity if symbol == arcade.key.LEFT: self.vel_x = 0 elif symbol == arcade.key.RIGHT: self.vel_x = 0 def camera_move(self): # Getting the x coordinate for the center of camera screen_x = self.player_sprite.center_x - \ (self.camera.viewport_width / 2) # Getting the y coordinate for the center of camera screen_y = self.player_sprite.center_y - \ (self.camera.viewport_height / 2) # Moving the camera self.camera.move_to([screen_x, screen_y]) # Calling MainGame class game = MainGame() game.setup() arcade.run() |
Output:
Python Arcade – Adding Enemies
In this article, we will learn How we can add enemies in arcade.
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