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import pygame
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from settings import *
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from entity import Entity
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from support import *
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class Enemy(Entity):
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def __init__(self,monster_name,pos,groups,obstacle_sprites,damage_player,trigger_death_particles,add_exp):
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# general setup
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# 调用父类的初始化方法，将实例添加到指定的分组中
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super().__init__(groups)
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# 设置角色的精灵类型为 'enemy'
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self.sprite_type = 'enemy'
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# graphics setup
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# 导入指定怪物名称的图像资源
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self.import_graphics(monster_name)
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# 设置角色的状态为 'idle'（空闲状态）
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self.status = 'idle'
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# 获取角色当前状态的图像
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self.image = self.animations[self.status][self.frame_index]
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# movement
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# 设置角色的位置
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self.rect = self.image.get_rect(topleft = pos)
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# 设置角色的碰撞框，稍微向上收缩一些
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self.hitbox = self.rect.inflate(0,-10)
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# 设置角色所在的障碍物精灵组
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self.obstacle_sprites = obstacle_sprites
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# stats 将怪物的各种值赋予
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self.monster_name = monster_name
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# 从怪物数据字典中获取指定怪物的信息
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monster_info = monster_data[self.monster_name]
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# 怪物的生命值
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self.health = monster_info['health']
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# 击败怪物后获得的经验值
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self.exp = monster_info['exp']
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# 怪物的移动速度
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self.speed = monster_info['speed']
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# 怪物的攻击伤害
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self.attack_damage = monster_info['damage']
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# 怪物的抵抗力
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self.resistance = monster_info['resistance']
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# 怪物的攻击范围
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self.attack_radius = monster_info['attack_radius']
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# 怪物的发现玩家范围
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self.notice_radius = monster_info['notice_radius']
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# 怪物的攻击类型
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self.attack_type = monster_info['attack_type']
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# player interaction 设置角色与玩家交互相关的属性和方法
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# 角色是否能够进行攻击
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self.can_attack = True
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# 记录上次攻击的时间
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self.attack_time = None
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# 攻击的冷却时间（毫秒）
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self.attack_cooldown = 400
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# 对玩家造成伤害的方法
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self.damage_player = damage_player
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# 触发角色死亡特效的方法
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self.trigger_death_particles = trigger_death_particles
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# 增加玩家经验值的方法
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self.add_exp = add_exp
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# invincibility timer 设置角色的无敌时间相关属性
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# 角色是否处于易受伤状态
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self.vulnerable = True
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# 记录角色受到攻击的时间点
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self.hit_time = None
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# 角色的无敌持续时间（毫秒）
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self.invincibility_duration = 300
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# sounds 设置角色相关的音效
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# 死亡音效
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self.death_sound = pygame.mixer.Sound('../audio/death.wav')
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# 受伤音效
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self.hit_sound = pygame.mixer.Sound('../audio/hit.wav')
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# 攻击音效
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self.attack_sound = pygame.mixer.Sound(monster_info['attack_sound'])
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# 设置死亡音效的音量
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self.death_sound.set_volume(0.6)
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# 设置受伤音效的音量
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self.hit_sound.set_volume(0.6)
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# 设置攻击音效的音量
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self.attack_sound.set_volume(0.6)
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def import_graphics(self,name):
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# 初始化动画字典，包含三种动画状态：idle（空闲）、move（移动）、attack（攻击）
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self.animations = {'idle':[],'move':[],'attack':[]}
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# 指定敌人角色图形资源的主路径，根据角色名称构建路径
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main_path = f'../graphics/monsters/{name}/'
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# 调用 import_folder 函数导入指定路径下的图像资源，并将结果存储到动画字典中对应状态的键中
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for animation in self.animations.keys():
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self.animations[animation] = import_folder(main_path + animation)
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def get_player_distance_direction(self,player):
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# 获取敌人角色和玩家角色的中心点坐标作为向量
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enemy_vec = pygame.math.Vector2(self.rect.center)
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player_vec = pygame.math.Vector2(player.rect.center)
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# 计算敌人角色与玩家角色之间的距离
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distance = (player_vec - enemy_vec).magnitude()
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# 如果距离大于 0，则计算方向向量
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if distance > 0:
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# 计算方向向量并归一化
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direction = (player_vec - enemy_vec).normalize()
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# 距离为 0 或负数时，方向向量为零向量
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else:
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direction = pygame.math.Vector2()
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# 返回距离和方向向量的元组
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return (distance,direction)
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def get_status(self, player):
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# 获取敌人角色与玩家角色的距离
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distance = self.get_player_distance_direction(player)[0]
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# 根据距离和设定的攻击范围、发现范围确定敌人角色的状态
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if distance <= self.attack_radius and self.can_attack:
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# 如果距离小于等于攻击范围并且可以进行攻击
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if self.status != 'attack':
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# 重置动画帧索引
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self.frame_index = 0
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# 设置状态为攻击
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self.status = 'attack'
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# 如果距离小于等于发现范围
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elif distance <= self.notice_radius:
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# 设置状态为移动
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self.status = 'move'
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# 距离大于发现范围
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else:
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# 设置状态为空闲（静止）
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self.status = 'idle'
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def actions(self,player):
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# 如果状态为攻击
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if self.status == 'attack':
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# 记录攻击时间
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self.attack_time = pygame.time.get_ticks()
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# 对玩家造成伤害
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self.damage_player(self.attack_damage,self.attack_type)
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# 播放攻击音效
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self.attack_sound.play()
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# 如果状态为移动
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elif self.status == 'move':
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# 获取朝向玩家的方向向量
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self.direction = self.get_player_distance_direction(player)[1]
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# 其他情况（状态为空闲或其他）
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else:
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# 将方向向量设为零向量，即停止移动
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self.direction = pygame.math.Vector2()
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def animate(self):
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# 获取当前状态对应的动画帧列表
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animation = self.animations[self.status]
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# 更新帧索引，控制动画播放速度
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self.frame_index += self.animation_speed
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# 如果帧索引超过动画帧列表的长度
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if self.frame_index >= len(animation):
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# 如果是攻击状态，设置为不可攻击状态
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if self.status == 'attack':
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self.can_attack = False
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# 重置帧索引，从头开始播放动画
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self.frame_index = 0
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# 更新角色的图像为当前帧的图像
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self.image = animation[int(self.frame_index)]
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# 更新角色的矩形位置
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self.rect = self.image.get_rect(center = self.hitbox.center)
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# 根据角色的易受伤状态设置图像的透明度
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if not self.vulnerable:
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# 调用自定义的方法获取波形值，用于设置透明度
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alpha = self.wave_value()
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# 设置图像的透明度
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self.image.set_alpha(alpha)
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# 如果角色不是易受伤状态，则设置完全不透明（透明度为 255）
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else:
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self.image.set_alpha(255)
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# 处理敌人角色的攻击冷却和无敌状态的持续时间。
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def cooldowns(self):
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# 获取当前时间（以毫秒为单位）
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current_time = pygame.time.get_ticks()
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# 处理攻击冷却时间
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# 如果当前不能攻击（即处于攻击冷却中）
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if not self.can_attack:
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# 如果距离上次攻击时间已经超过攻击冷却时间
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if current_time - self.attack_time >= self.attack_cooldown:
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# 设置为可以再次攻击
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self.can_attack = True
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# 处理无敌状态持续时间
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# 如果当前不可受伤（即处于无敌状态）
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if not self.vulnerable:
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# 如果距离上次受伤时间已经超过无敌状态持续时间
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if current_time - self.hit_time >= self.invincibility_duration:
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# 设置为可受伤状态（结束无敌状态）
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self.vulnerable = True
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# 处理敌人角色受到玩家攻击造成的伤害。
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def get_damage(self,player,attack_type):
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if self.vulnerable:
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# 播放受击音效
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self.hit_sound.play()
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# 设置受击后的朝向玩家的方向向量
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self.direction = self.get_player_distance_direction(player)[1]
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# 根据攻击类型应用不同的伤害值
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if attack_type == 'weapon':
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# 玩家使用武器攻击造成伤害
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self.health -= player.get_full_weapon_damage()
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# 玩家使用魔法攻击造成伤害
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else:
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self.health -= player.get_full_magic_damage()
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# 记录受击时间
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self.hit_time = pygame.time.get_ticks()
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# 设置为不可受伤状态，进入无敌状态
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self.vulnerable = False
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#检查角色是否死亡
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def check_death(self):
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# 如果敌人角色的生命值小于等于 0，表示角色已经死亡
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if self.health <= 0:
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# 从精灵组中移除角色，通常用于删除角色或停止其更新和渲染
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self.kill()
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# 触发死亡粒子效果，通常用于播放死亡动画或粒子效果
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self.trigger_death_particles(self.rect.center,self.monster_name)
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# 增加经验值
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self.add_exp(self.exp)
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# 播放死亡音效，提供游戏中的音效反馈
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self.death_sound.play()
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#被攻击后的反应
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def hit_reaction(self):
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# 如果敌人角色不可受伤
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if not self.vulnerable:
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# 则将角色的移动方向向量乘以负阻力，模拟受击后的击退效果。
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self.direction *= -self.resistance
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#更新状态
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def update(self):
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# 处理受击反应
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self.hit_reaction()
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# 移动角色，传入速度参数
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self.move(self.speed)
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# 更新角色动画
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self.animate()
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# 处理攻击冷却和无敌状态持续时间
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self.cooldowns()
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# 检查角色是否死亡并执行死亡逻辑
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self.check_death()
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def enemy_update(self,player):
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# 获取敌人角色的状态
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self.get_status(player)
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# 执行敌人角色的行为
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self.actions(player)
|
