implement save and load settings

src/js/net/minecraft/client/GameSettings.js

@@ -5,4 +5,24 @@ window.GameSettings = class {
         this.sprinting = 'ControlLeft';
     }
 
+    load() {
+        for (let prop in this) {
+            let nameEQ = prop + "=";
+            let ca = document.cookie.split(';');
+            for (let i = 0; i < ca.length; i++) {
+                let c = ca[i];
+                while (c.charAt(0) === ' ') c = c.substring(1, c.length);
+                if (c.indexOf(nameEQ) === 0) {
+                    this[prop] = c.substring(nameEQ.length, c.length);
+                }
+            }
+        }
+    }
+
+    save() {
+        for (let prop in this) {
+            document.cookie = prop + "=" + (this[prop] || "") + "; path=/";
+        }
+    }
+
 }

src/js/net/minecraft/client/Minecraft.js

@@ -13,6 +13,7 @@ window.Minecraft = class {
         this.timer = new Timer(20);
 
         this.settings = new GameSettings();
+        this.settings.load();
 
         // Create window and world renderer
         this.window = new GameWindow(this, canvasWrapperId);
@@ -139,6 +140,11 @@ window.Minecraft = class {
             return;
         }
 
+        // Close previous screen
+        if (!(this.currentScreen === null)) {
+            this.currentScreen.onClose();
+        }
+
         // Switch screen
         this.currentScreen = screen;
 

src/js/net/minecraft/client/gui/GuiScreen.js

@@ -18,6 +18,10 @@ window.GuiScreen = class extends Gui {
         this.buttonList = [];
     }
 
+    onClose() {
+
+    }
+
     drawScreen(stack, mouseX, mouseY, partialTicks) {
         for (let i in this.buttonList) {
             let button = this.buttonList[i];

src/js/net/minecraft/client/gui/screens/GuiControls.js

@@ -37,4 +37,9 @@ window.GuiControls = class extends GuiScreen {
         super.drawScreen(stack, mouseX, mouseY, partialTicks);
     }
 
+    onClose() {
+        // Save settings
+        this.minecraft.settings.save();
+    }
+
 }

src/js/net/minecraft/client/render/Tessellator.js

@@ -3,8 +3,7 @@ window.Tessellator = class {
     constructor() {
         this.material = new THREE.MeshBasicMaterial({
             vertexColors: THREE.VertexColors,
-            //side: THREE.BackSide,
-            side: THREE.DoubleSide,
+            side: THREE.BackSide,
             transparent: true,
             depthTest: true
         });