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Allow setting alpha for 2D camera flash effect

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* Allow the overriding of `this.alpha` value for the camera flash effect
This commit is contained in:
kainage 2020-09-17 21:39:14 -07:00
parent af27284202
commit 6861a93a82
1 changed files with 15 additions and 4 deletions
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19
src/cameras/2d/effects/Flash.js
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@ -104,10 +104,9 @@ var Flash = new Class({
*
* @name Phaser.Cameras.Scene2D.Effects.Flash#alpha
* @type {number}
* @private
* @since 3.5.0
*/
this.alpha = 0;
this.alpha = 1;
/**
* If this effect is running this holds the current percentage of the progress, a value between 0 and 1.
@ -128,6 +127,17 @@ var Flash = new Class({
*/
this._elapsed = 0;
/**
* This is an internal copy of the initial value of `this.alpha`, used to calculate the current alpha value of the fade effect.
*
* @name Phaser.Cameras.Scene2D.Effects.Flash#_alpha
* @type {number}
* @private
* @readonly
* @since 3.50.0
*/
this._alpha;
/**
* This callback is invoked every frame for the duration of the effect.
*
@ -191,8 +201,8 @@ var Flash = new Class({
this.red = red;
this.green = green;
this.blue = blue;
this.alpha = 1;
this._alpha = this.alpha;
this._elapsed = 0;
this._onUpdate = callback;
@ -230,7 +240,7 @@ var Flash = new Class({
if (this._elapsed < this.duration)
{
this.alpha = 1 - this.progress;
this.alpha = this._alpha * (1 - this.progress);
}
else
{
@ -304,6 +314,7 @@ var Flash = new Class({
*/
effectComplete: function ()
{
this._alpha = this.alpha
this._onUpdate = null;
this._onUpdateScope = null;