/
OpacityBehavior.ts
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/
OpacityBehavior.ts
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/*
* GDevelop JS Platform
* Copyright 2013-2023 Florian Rival (Florian.Rival@gmail.com). All rights reserved.
* This project is released under the MIT License.
*/
namespace gdjs {
export interface OpacityHandler {
/**
* Change the transparency of the object.
* @param opacity The new opacity, between 0 (transparent) and 255 (opaque).
*/
setOpacity(opacity: float): void;
/**
* Get the transparency of the object.
* @return The opacity, between 0 (transparent) and 255 (opaque).
*/
getOpacity(): float;
}
/**
* A behavior that forwards the Opacity interface to its object.
*/
export class OpacityBehavior
extends gdjs.RuntimeBehavior
implements OpacityHandler {
private object: gdjs.RuntimeObject & OpacityHandler;
constructor(
instanceContainer: gdjs.RuntimeInstanceContainer,
behaviorData,
owner: gdjs.RuntimeObject & OpacityHandler
) {
super(instanceContainer, behaviorData, owner);
this.object = owner;
}
usesLifecycleFunction(): boolean {
return false;
}
updateFromBehaviorData(oldBehaviorData, newBehaviorData): boolean {
// Nothing to update.
return true;
}
onDeActivate() {}
onDestroy() {}
doStepPreEvents(instanceContainer: gdjs.RuntimeInstanceContainer) {}
doStepPostEvents(instanceContainer: gdjs.RuntimeInstanceContainer) {}
setOpacity(opacity: float): void {
this.object.setOpacity(opacity);
}
getOpacity(): float {
return this.object.getOpacity();
}
}
gdjs.registerBehavior(
'OpacityCapability::OpacityBehavior',
gdjs.OpacityBehavior
);
}