54 lines
1.5 KiB
Lua
54 lines
1.5 KiB
Lua
--- @alias voidCallback fun(): nil
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--- @alias animationRunner fun(node: AnimationNode)
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--- @class AnimationNode
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--- @field count integer
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--- @field run animationRunner
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--- @field parent AnimationNode?
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--- @field children AnimationNode[]
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--- @field finish voidCallback
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--- @field onEnd voidCallback?
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local animation = {}
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animation.__index = animation
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--- Регистрация завершения дочерней анимации
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function animation:bubbleUp()
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self.count = self.count - 1
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if self.count > 0 then return end
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if self.onEnd then self.onEnd() end
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if self.parent then self.parent:bubbleUp() end
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end
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--- @param children AnimationNode[]
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--- Запланировать анимации после текущей, которые запустятся одновременно друг с другом
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function animation:chain(children)
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for _, child in ipairs(children) do
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child.parent = self
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table.insert(self.children, child)
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self.count = self.count + 1
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end
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return self
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end
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--- @param data {[1]: animationRunner?, onEnd?: voidCallback, children?: AnimationNode[]}
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--- @return AnimationNode
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local function new(data)
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local t = setmetatable({}, animation)
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t.run = data[1] or function(self)
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self:finish()
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end
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t.onEnd = data.onEnd
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t.count = 1 -- своя анимация
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t.children = {}
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t:chain(data.children or {})
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t.finish = function()
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t:bubbleUp()
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for _, anim in ipairs(t.children) do
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anim:run()
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end
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end
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return t
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end
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return new
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