From ff6ae4aabdb224307bed8a7b71fb23037e843bf5 Mon Sep 17 00:00:00 2001
From: inateno <inateno@gmail.com>
Date: Sat, 4 Nov 2017 14:36:45 +0100
Subject: [PATCH] #11 WIP z modifier on GameObject scaling

---
 js/engine/classes/GameObject/GameObject.js    |  1 +
 .../classes/GameObject/GameObject.scale.js    | 25 +++++++++++++++++++
 js/engine/config.js                           |  3 +++
 js/game1/Game.js                              |  2 ++
 4 files changed, 31 insertions(+)

diff --git a/js/engine/classes/GameObject/GameObject.js b/js/engine/classes/GameObject/GameObject.js
index 35cec12..77d56f1 100644
--- a/js/engine/classes/GameObject/GameObject.js
+++ b/js/engine/classes/GameObject/GameObject.js
@@ -351,6 +351,7 @@ function(
       }
       , set: function( z ) {
         this._z = z;
+        this._updateZScale();
         
         if ( this.parent ) {
           this.parent._shouldSortChildren = true;
diff --git a/js/engine/classes/GameObject/GameObject.scale.js b/js/engine/classes/GameObject/GameObject.scale.js
index 9aea722..7529b9b 100644
--- a/js/engine/classes/GameObject/GameObject.scale.js
+++ b/js/engine/classes/GameObject/GameObject.scale.js
@@ -1,10 +1,12 @@
 define( [
   'DE.GameObject'
   , 'DE.Time'
+  , 'DE.config'
 ],
 function(
   GameObject
   , Time
+  , config
 )
 {
   /**
@@ -21,6 +23,29 @@ function(
     return this;
   };
   
+  /**
+   * when z change we restore saved scale, then change it again to final values and update worldScale
+   * @private
+   * @memberOf GameObject
+   */
+  GameObject.prototype._updateZScale = function()
+  {
+    // this come from old Camera render (working fine as excepted...)
+    // zMaxDepth is 10 by default so if z is 1 scale modifier will be 0.9 (1 - 0.1)
+    var zscale = 1 - ( this.z / config.zMaxDepth );
+    this._zscale = zscale;
+    
+    this.scale.x = zscale * this.savedScale.x;
+    this.scale.y = zscale * this.savedScale.y;
+    
+    // update worldScale
+    this._updateWorldScale();
+    for ( var i = 0; i < this.gameObjects.length; ++i )
+    {
+      this.gameObjects[ i ]._updateWorldScale();
+    }
+  };
+  
   /**
    * when we change the scale manually, we need to re-apply z deformation
    * directly save the old scale before zscale applies (this way we can recalculate things from the beginning)
diff --git a/js/engine/config.js b/js/engine/config.js
index db495c7..3d40890 100644
--- a/js/engine/config.js
+++ b/js/engine/config.js
@@ -7,6 +7,9 @@ define( [], function()
     , DEBUG_LEVEL: 0
   };
   
+  // zMaxDepth is the global scaling used for z. 10 by default so if you put an object to z = 10 his scale will be 0
+  config.zMaxDepth = 10;
+  
   config.notifications = {
     enable: true // notifications enable by default
     ,gamepadEnable    : true
diff --git a/js/game1/Game.js b/js/game1/Game.js
index b54d59f..392536e 100644
--- a/js/game1/Game.js
+++ b/js/game1/Game.js
@@ -146,10 +146,12 @@ function( DE )
     
     Game.heart1 = new DE.GameObject( {
       x: 700, y: 100
+      , zindex : 10
       ,renderer: new DE.TextureRenderer( { spriteName: "heart" } )
     } );
     Game.heart2 = new DE.GameObject( {
       x: 800, y: 100
+      , zindex : 10
       ,renderer: new DE.TextureRenderer( { spriteName: "heart", width: 50, height: 20 } )
     } );