local CollectionService = game:GetService("CollectionService")

-- 一个实时的部件集合，标记为 "MapleLeaf"，是标记为 "MapleTree" 的模型的直接子项
local mapleLeaves: Collection = CollectionService:CreateCollection("Model.MapleTree > Part.MapleLeaf")

local function sway(leaf: Part, deltaTime: number)
	leaf.CFrame *= CFrame.fromEulerAnglesXYZ(0, math.rad(20) * deltaTime, 0)
end

local function fall(leaf: Part)
	leaf.Anchored = false
end

-- OnAdded 对于每个已经匹配的叶子触发一次，然后对于每个新的匹配触发
function mapleLeaves.OnAdded(leaf: Part)
	leaf.Material = Enum.Material.Neon
end

-- OnRemoved 在叶子停止匹配时触发（未标记、重新父级到树外或被销毁）
function mapleLeaves.OnRemoved(leaf: Part)
	leaf.Material = Enum.Material.Plastic
end

-- RunService 回调：每个心跳对集合中的每个叶子触发一次
function mapleLeaves.OnHeartbeat(leaf: Part, deltaTime: number)
	sway(leaf, deltaTime)
end

-- 事件回调：连接到每个叶子的 BasePart.Touched
function mapleLeaves.OnTouched(leaf: Part, other: BasePart)
	fall(leaf)
end

-- 属性回调：当叶子的颜色变化时触发
function mapleLeaves.OnPropertyChanged.Color(leaf: Part)
	if leaf.Color == Color3.fromRGB(124, 92, 70) then
		fall(leaf)
	end
end

-- 将当前集合中的每个叶子设置为绿色
mapleLeaves:ForEach(function(leaf: Part)
	leaf.Color = Color3.fromRGB(0, 255, 0)
end)