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【作品展示】

 

【作品介绍】

大鱼吃小鱼，上下左右移动，可以吃小鱼

 

【作品源代码】

from arcade import *
from PIL import Image
import random

SCREEN_WIDTH = 1200
SCREEN_HEIGHT = 900
SCREEN_TITLE = "大鱼吃小鱼"
MOVEMENT_SPEED = 4
LEFT = 0
RIGHT = 1

class Player(Sprite):
    def __init__(self,image):
        super().__init__(image)
        self.center_x = SCREEN_WIDTH // 2
        self.center_y = SCREEN_HEIGHT // 2

        self.append_texture(load_texture("player.png", mirrored=True, scale=1))
        self.size = 2

    def update(self):
        super().update()
        if self.left < 0:
            self.left = 0
        elif self.right >SCREEN_WIDTH:
            self.right = SCREEN_WIDTH
        if self.top > SCREEN_HEIGHT:
            self.top = SCREEN_HEIGHT
        elif self.bottom < 0:
            self.bottom = 0
class Enemy(Sprite):
    def __init__(self,image):
        super(). __init__(image)
        face = random.choice(["left","right"])
        speed = random.choice([1,2,3,4,5])
        if face == "left":
            self.center_x = SCREEN_WIDTH  + 60
            self.change_x = -speed

        elif face == "right":
            self.center_x = -60
            self.append_texture(load_texture(image,mirrored=True, scale=1))
            self.set_texture(RIGHT)
            self.change_x = speed
        self.center_y = random.randint(0,SCREEN_HEIGHT)
        



class MyGame(arcade.Window):
    def __init__(self,width,height,title):
        super().__init__(width,height,title)
        self.setup()
    def setup(self):
        Image.open("sea.png").resize((SCREEN_WIDTH,SCREEN_HEIGHT)).save("new_sea.png")
        self.background = Sprite("new_sea.png")
        self.background.center_x = SCREEN_WIDTH // 2
        self.background.center_y = SCREEN_HEIGHT // 2

        self.player_sprite = Player("player.png")
        self.player_sprite_list = SpriteList()
        self.player_sprite_list.append(self.player_sprite)

        self.fishes = {"黄鱼.png":1, "绿鱼.png":3,
                       "红鱼.png":5, "紫鱼.png":7,
                       "蓝鱼.png":9}
        self.enemy_sprite_list = SpriteList()
        self.total_time = 0
        self.last_time = 0
        self.create_num = 1
        
    def on_draw(self):
        start_render()
        self.background.draw()
        self.player_sprite_list.draw()
        self.enemy_sprite_list.draw()

    def on_update(self,delta_time):
        
        self.total_time += delta_time 
        if int(self.total_time) != int(self.last_time) and int(self.total_time) %300 == 0:
            self.create_num +=1
        if int(self.total_time) != int(self.last_time) and int(self.total_time) % 1 == 0:
            self.create_enemy()
            self.last_time = self.total_time


        self.player_sprite_list.update()
        self.enemy_sprite_list.update()

        for enemy in self.enemy_sprite_list:
            if enemy.center_x < -60 or enemy.center_x > SCREEN_WIDTH + 60:
                enemy.喵()

        hit_list = check_for_collision_with_list(self.player_sprite, self.enemy_sprite_list)
        if hit_list:
            for hit in hit_list:
                if self.player_sprite.size > hit.size:
                    hit.喵()
                else:
                    self.player_sprite.喵()

    

    def on_key_press(self, symbol,modifiers):
        if symbol == key.UP:
            self.player_sprite.change_y = MOVEMENT_SPEED
        elif symbol == key.DOWN:
            self.player_sprite.change_y = -MOVEMENT_SPEED
        elif symbol == key.LEFT:
            self.player_sprite.change_x = -MOVEMENT_SPEED
            self.player_sprite.set_texture(LEFT)
        elif symbol == key.RIGHT:
            self.player_sprite.change_x = MOVEMENT_SPEED
            self.player_sprite.set_texture(RIGHT)
        elif symbol == key.RETURN:
            image = get_image(0,0, SCREEN_WIDTH,SCREEN_HEIGHT)
            image.save("screenshot.png")

    def on_key_release(self, symbol, modifiers):
        if symbol == key.UP or symbol == key.DOWN:
            self.player_sprite.change_y = 0
        elif symbol == key.LEFT or symbol == key.RIGHT:
            self.player_sprite.change_x = 0

    def create_enemy(self):
        for i in range(self.create_num): 
            fish = random.choice(list(self.fishes.keys()))
            size = self.fishes(fish)
            enemy_sprite = Enemy(fish)
            enemy_sprite.size = size
            self.enemy_sprite_list.append(enemy_sprite)

if __name__ == "__main__":
    game = MyGame(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_TITLE)
    run()

 

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