我正在使用来自 arcade.academy 的教程，到目前为止游戏运行良好（一个人四处走动收集硬币和得分）但我希望在用户按下 Q 时出现攻击动画，这样我就可以转动一些硬币进入敌人并制作一点角色扮演游戏并增加我的知识。
这是我到目前为止所得到的，但由于某种原因，self.is_attacking 布尔值要么没有触发，要么没有正确链接。
这是我到目前为止所得到的。
import arcade
import random
import os
SCREEN_WIDTH = 800
SCREEN_HEIGHT = 600
SCREEN_TITLE = "Move with a Sprite Animation Example"
COIN_SCALE = 0.5
COIN_COUNT = 50
CHARACTER_SCALING = 1
MOVEMENT_SPEED = 5
UPDATES_PER_FRAME = 7
# Constants used to track if the player is facing left or right
RIGHT_FACING = 0
LEFT_FACING = 1
def load_texture_pair(filename):
"""
Load a texture pair, with the second being a mirror image.
"""
return [
arcade.load_texture(filename, scale=CHARACTER_SCALING),
arcade.load_texture(filename, scale=CHARACTER_SCALING, mirrored=True)
]
class PlayerCharacter(arcade.Sprite):
def __init__(self):
# Set up parent class
super().__init__()
# Default to face-right
self.character_face_direction = RIGHT_FACING
# Used for flipping between image sequences
self.cur_texture = 0
self.attack_texture = 0
# Track our state
self.jumping = False
self.climbing = False
self.is_on_ladder = False
self.is_attacking = False
# Adjust the collision box. Default includes too much empty space
# side-to-side. Box is centered at sprite center, (0, 0)
self.points = [[-22, -64], [22, -64], [22, 28], [-22, 28]]
# --- Load Textures ---
# Images from Kenney.nl's Asset Pack 3
main_path = "images/Sprites/rogue like character/rogue like"
# main_path = "platform_tutorial/images/Female person/PNG/Poses/character_femalePerson"
# main_path = "platform_tutorial/images/Male person/PNG/Poses/character_malePerson"
# main_path = "platform_tutorial/images/Male adventurer/PNG/Poses/character_maleAdventurer"
# main_path = "platform_tutorial/images/Zombie/PNG/Poses/character_zombie"
# main_path = "platform_tutorial/images/Robot/PNG/Poses/character_robot"
# Load textures for idle standing
self.idle_texture_pair = load_texture_pair(f"{main_path} idle_Animation 1_0.png")
# Load textures for walking
self.walk_textures = []
for i in range(6):
texture = load_texture_pair(f"{main_path} run_Animation 1_{i}.png")
self.walk_textures.append(texture)
# Load textures for attacking
self.attack_textures = []
for i in range(10):
texture = load_texture_pair(f"{main_path} attack_Animation 1_{i}.png")
self.attack_textures.append(texture)
def update_animation(self, delta_time: float = 1/60):
# Figure out if we need to flip face left or right
if self.change_x < 0 and self.character_face_direction == RIGHT_FACING:
self.character_face_direction = LEFT_FACING
elif self.change_x > 0 and self.character_face_direction == LEFT_FACING:
self.character_face_direction = RIGHT_FACING
# Idle animation
if self.change_x == 0 and self.change_y == 0:
self.texture = self.idle_texture_pair[self.character_face_direction]
return
# Walking animation
self.cur_texture += 1
if self.cur_texture > 5 * UPDATES_PER_FRAME:
self.cur_texture = 0
self.texture = self.walk_textures[self.cur_texture // UPDATES_PER_FRAME][self.character_face_direction]
# Attacking animation
if self.is_attacking:
self.cur_texture += 1
if self.cur_texture > 9 * UPDATES_PER_FRAME:
self.cur_texture = 0
self.is_attacking = False
self.texture = self.attack_textures[self.cur_texture // UPDATES_PER_FRAME][self.character_face_direction]
class MyGame(arcade.Window):
# Main application class.
def __init__(self, width, height, title):
# Initializer
super().__init__(width, height, title)
# Set the working directory (where we expect to find files) to the same
# directory this .py file is in. You can leave this out of your own
# code, but it is needed to easily run the examples using "python -m"
# as mentioned at the top of this program.
file_path = os.path.dirname(os.path.abspath(__file__))
os.chdir(file_path)
# Set up the game and initialize the variables.
# Sprite lists
self.player_list = None
self.coin_list = None
# Set up the player
self.score = 0
self.player = None
self.is_attacking = False
def setup(self):
self.player_list = arcade.SpriteList()
self.coin_list = arcade.SpriteList()
# Set up the player
self.score = 0
self.player = PlayerCharacter()
self.player.center_x = SCREEN_WIDTH // 2
self.player.center_y = SCREEN_HEIGHT // 2
self.player.scale = 0.8
self.player_list.append(self.player)
for i in range(COIN_COUNT):
coin = arcade.AnimatedTimeSprite(scale=0.5)
coin.center_x = random.randrange(SCREEN_WIDTH)
coin.center_y = random.randrange(SCREEN_HEIGHT)
coin.textures = []
coin.textures.append(arcade.load_texture("images/items/Coingold.png", scale=COIN_SCALE))
coin.textures.append(arcade.load_texture("images/items/Coingold.png", scale=COIN_SCALE))
coin.textures.append(arcade.load_texture("images/items/Coingold.png", scale=COIN_SCALE))
coin.textures.append(arcade.load_texture("images/items/Coingold.png", scale=COIN_SCALE))
coin.textures.append(arcade.load_texture("images/items/Coingold.png", scale=COIN_SCALE))
coin.textures.append(arcade.load_texture("images/items/Coingold.png", scale=COIN_SCALE))
coin.cur_texture_index = random.randrange(len(coin.textures))
self.coin_list.append(coin)
# Set the background color
arcade.set_background_color(arcade.color.AMAZON)
def on_draw(self):
# Render the screen.
# This command has to happen before we start drawing
arcade.start_render()
# Draw all the sprites.
self.coin_list.draw()
self.player_list.draw()
# Put the text on the screen.
output = f"Score: {self.score}"
arcade.draw_text(output, 10, 20, arcade.color.WHITE, 14)
def on_key_press(self, key, modifiers):
# Called whenever a key is pressed.
if key == arcade.key.UP:
self.player.change_y = MOVEMENT_SPEED
elif key == arcade.key.DOWN:
self.player.change_y = -MOVEMENT_SPEED
elif key == arcade.key.LEFT:
self.player.change_x = -MOVEMENT_SPEED
elif key == arcade.key.RIGHT:
self.player.change_x = MOVEMENT_SPEED
elif key == arcade.key.Q:
self.is_attacking = True
def on_key_release(self, key, modifiers):
# Called when the user releases a key.
if key == arcade.key.UP or key == arcade.key.DOWN:
self.player.change_y = 0
elif key == arcade.key.LEFT or key == arcade.key.RIGHT:
self.player.change_x = 0
elif key == arcade.key.Q:
self.is_attacking = False
def on_update(self, delta_time):
# Movement and game logic
self.coin_list.update()
self.coin_list.update_animation()
self.player_list.update()
self.player_list.update_animation()
# Generate a list of all sprites that collided with the player.
hit_list = arcade.check_for_collision_with_list(self.player, self.coin_list)
# Loop through each colliding sprite, remove it, and add to the score.
for coin in hit_list:
coin.remove_from_sprite_lists()
self.score += 1
def main():
# Main method
window = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)
window.setup()
arcade.run()
if __name__ == "__main__":
main()