Fix handle deprecation of unity WebGL variables

Author: JohannesDeml

Assets/Plugins/WebGL/WebGlPlugins.jslib

@@ -2,8 +2,15 @@
 var WebGlPlugins =
 {
     _LogStartTime: function (str) {
-        var startTimeText = Pointer_stringify(str);
+        var startTimeText = "Missing function";
 
+        if(typeof UTF8ToString != 'undefined') {
+            startTimeText = UTF8ToString(str);
+        }
+        else if (typeof Pointer_stringify !== 'undefined') {
+            startTimeText = Pointer_stringify(str);
+        }
+        
         if(typeof unityLoadingFinished !== 'undefined') {
             unityLoadingFinished(startTimeText);
         }
@@ -14,22 +21,42 @@ var WebGlPlugins =
 
     _GetTotalMemorySize: function()
     {
-        return TOTAL_MEMORY;
+        if(typeof TOTAL_MEMORY !== 'undefined') {
+            return TOTAL_MEMORY;
+        }
+
+        console.warn('Problem with retrieving unity value. TOTAL_MEMORY: ' + typeof TOTAL_MEMORY);
+        return -1;
     },
 
     _GetTotalStackSize: function()
     {
-        return TOTAL_STACK;
+        if(typeof TOTAL_STACK !== 'undefined') {
+            return TOTAL_STACK;
+        }
+
+        console.warn('Problem with retrieving unity value. TOTAL_STACK: ' + typeof TOTAL_STACK);
+        return -1;
     },
 
     _GetStaticMemorySize: function()
     {
-        return STATICTOP - STATIC_BASE;
+        if(typeof STATICTOP !== 'undefined' && typeof STATIC_BASE !== 'undefined') {
+            return STATICTOP - STATIC_BASE;
+        }
+
+        console.warn('Problem with retrieving unity value. STATICTOP: ' + typeof STATICTOP + ', STATIC_BASE: ' + typeof STATIC_BASE);
+        return -1;
     },
 
     _GetDynamicMemorySize: function()
     {
-        return HEAP32[DYNAMICTOP_PTR >> 2] - DYNAMIC_BASE;
+        if(typeof HEAP32 !== 'undefined' && typeof DYNAMICTOP_PTR !== 'undefined' && typeof DYNAMIC_BASE !== 'undefined') {
+            return HEAP32[DYNAMICTOP_PTR >> 2] - DYNAMIC_BASE;
+        }
+
+        console.warn('Problem with retrieving unity value. HEAP32: ' + HEAP32 + ', DYNAMICTOP_PTR: ' + DYNAMICTOP_PTR  + ', DYNAMIC_BASE: ' + DYNAMIC_BASE);
+        return -1;
     }
 };