35 lines
1,016 B
Lua
35 lines
1,016 B
Lua
local Element = require('elements/Element')
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---@class Curtain : Element
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local Curtain = class(Element)
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function Curtain:new() return Class.new(self) --[[@as Curtain]] end
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function Curtain:init()
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Element.init(self, 'curtain', {render_order = 999})
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self.opacity = 0
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---@type string[]
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self.dependents = {}
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end
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---@param id string
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function Curtain:register(id)
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self.dependents[#self.dependents + 1] = id
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if #self.dependents == 1 then self:tween_property('opacity', self.opacity, 1) end
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end
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---@param id string
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function Curtain:unregister(id)
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self.dependents = itable_filter(self.dependents, function(item) return item ~= id end)
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if #self.dependents == 0 then self:tween_property('opacity', self.opacity, 0) end
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end
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function Curtain:render()
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if self.opacity == 0 or config.opacity.curtain == 0 then return end
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local ass = assdraw.ass_new()
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ass:rect(0, 0, display.width, display.height, {
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color = config.color.curtain, opacity = config.opacity.curtain * self.opacity,
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})
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return ass
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end
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return Curtain
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