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"""
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镜头管理系统，主要作用是在触发剧情时，移动镜头
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create by 狡猾的皮球
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qq:871245007
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2020年2月12日 14:35:35
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"""
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class CameraManager:
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"""
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游戏镜头管理器
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"""
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def __init__(self, game_map, walker):
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"""
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game_map:游戏地图对象
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walker:行走者
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"""
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self.game_map = game_map
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self.lock_role = True # 是否锁定镜头
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self.walker = walker # 锁定镜头的主角
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self.moving = False # 镜头是否正在移动
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self.step = 4 # 镜头每帧移动的像素
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# 镜头移动的目标坐标
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self.target_x = 0
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self.target_y = 0
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# 移动完成后的回调
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self.callback = None
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self.args = []
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def move(self, x, y, callback=None, args=None):
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"""
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镜头移动到目标位置
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x,y:地图坐标系的像素坐标
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"""
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if self.moving: # 正在移动
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return
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self.lock_role = False
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self.target_x, self.target_y = self.game_map.calc_roll_pos(x, y)
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print(self.target_x,self.target_y)
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self.moving = True
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self.callback = callback
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if args is not None:
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self.args = args
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def logic(self):
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"""
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镜头管理逻辑
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"""
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# 如果当前是锁定主角状态，直接调用地图滚动逻辑
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if self.lock_role and self.walker is not None:
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self.game_map.roll(self.walker.render_x, self.walker.render_y)
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return
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if not self.moving:
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return
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if self.game_map.x > self.target_x:
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self.game_map.x -= self.step
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if self.game_map.x < self.target_x:
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self.game_map.x = self.target_x
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elif self.game_map.x < self.target_x:
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self.game_map.x += self.step
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if self.game_map.x > self.target_x:
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self.game_map.x = self.target_x
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if self.game_map.y > self.target_y:
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self.game_map.y -= self.step
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if self.game_map.y < self.target_y:
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self.game_map.y = self.target_y
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elif self.game_map.y < self.target_y:
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self.game_map.y += self.step
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if self.game_map.y > self.target_y:
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self.game_map.y = self.target_y
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if self.game_map.x == self.target_x and self.game_map.y == self.target_y:
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self.moving = False
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if self.callback:
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self.callback(*self.args)
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def unlock(self, x=None, y=None):
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"""
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解除镜头锁定并且直接移动镜头到指定位置
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"""
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self.lock_role = False
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self.moving = False
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if x is None or y is None:
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return
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map_x, map_y = self.game_map.calc_roll_pos(x*16, y*16)
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self.game_map.x = map_x
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self.game_map.y = map_y
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def lock(self, walker):
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"""
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锁定视角到指定walker上，镜头直接移动到指定walker
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"""
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self.lock_role = True # 是否锁定镜头
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self.walker = walker # 锁定镜头的主角
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self.moving = False # 镜头是否正在移动
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def move_m_pos(self, mx, my, callback=None, args=None):
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"""
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镜头移动到目标位置（mx,my是小格子的坐标，不是像素坐标）
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"""
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x = mx * 16
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y = my * 16
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self.move(x, y, callback, args)
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