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Lumberyard
User Guide (Version 1.14)

Tweener Timeline

In the Scripted Entity Tweener system, you can create a timeline for granular control over your animations. You can chain and group animations. You can pause, resume, seek, play backward, label, and even dynamically control the playback speed of the animations.

To create a timeline, you can customize the following Lua script.

In this example, the script first animates the entity specified by ToAnimate, increasing its size from its original value to a width ["w"] and height ["h"] of 600. The script then animates the entity by shrinking it to a width ["w"] and height ["h"] of 200.

local AnimateUiEntity = { Properties = { ToAnimate = {default = EntityId()}, }, } function AnimateUiEntity:OnActivate() self.tickBusHandler = TickBus.Connect(self) self.ScriptedEntityTweener = require("Scripts.ScriptedEntityTweener.ScriptedEntityTweener") end function AnimateUiEntity:OnTick(deltaTime, timePoint) self.tickBusHandler:Disconnect() self.timeline = self.ScriptedEntityTweener:TimelineCreate() self.timeline:Add( { id = self.Properties.ToAnimate, easeMethod = ScriptedEntityTweenerEasingMethod_Bounce, easeType = ScriptedEntityTweenerEasingType_In, duration = 3.0, ["w"] = 600, ["h"] = 600, }) self.timeline:Add( { id = self.Properties.ToAnimate, easeMethod = ScriptedEntityTweenerEasingMethod_Sine, easeType = ScriptedEntityTweenerEasingType_in-out, duration = 3.0, ["w"] = 200, ["h"] = 200, }) self.timeline:Play() end function AnimateUiEntity:OnDeactivate() self.ScriptedEntityTweener:OnDeactivate() end return AnimateUiEntity

The following example shows all of the supported timeline operations.

-- Chained animations self.timeline = self.ScriptedEntityTweener:TimelineCreate() self.timeline:Add(…) self.timeline:Add(…) self.timeline:Play() --Labels self.timeline:AddLabel("Label", 0.5) –Add label that specifies 0.5 seconds into animation self.timeline:Play("Label") –Play from label --General timeline operations local animationParameters = { id = self.Properties.ToAnimate, duration = 3, ["opacity"] = 0.5 } self.timeline:Add({animationParameters}, {["label"] = "LabelName"}, ["offset"] = 2) --Start animation 2 seconds after LabelName self.timeline:Add({animationParameters}, {["initialStartTime"] = 2}, ["offset"] = -1) --Start animation at second 1 self.timeline:Play() self.timeline:Play(2) –-Play timeline starting at 2 seconds self.timeline:Pause() --Pause timeline self.timeline:Resume() --Resumes timeline, Play() also resumes self.timeline:Seek(3) --Play timeline starting at 3 seconds self.timeline:PlayBackwards() --Start playing animation backwards self.timeline:PlayBackwards(3) –-Start playing animation backwards starting from second 3 self.timeline:SetSpeed(2) –-Start playing animation at 2x speed