diff --git a/src/js/net/minecraft/client/Minecraft.js b/src/js/net/minecraft/client/Minecraft.js
index 70a79ed..5c06ae3 100644
--- a/src/js/net/minecraft/client/Minecraft.js
+++ b/src/js/net/minecraft/client/Minecraft.js
@@ -56,7 +56,11 @@ window.Minecraft = class {
 
     init() {
         // Load spawn chunk
-        this.world.getChunkAt(0, 0);
+        for (let x = -WorldRenderer.RENDER_DISTANCE; x <= WorldRenderer.RENDER_DISTANCE; x++) {
+            for (let z = -WorldRenderer.RENDER_DISTANCE; z <= WorldRenderer.RENDER_DISTANCE; z++) {
+                this.world.getChunkAt(x, z);
+            }
+        }
         this.player.respawn();
 
         // Start render loop
@@ -109,7 +113,7 @@ window.Minecraft = class {
 
     onRender(partialTicks) {
         // Player rotation
-        if (this.hasInGameFocus()) {
+        if (!this.isPaused()) {
             this.player.turn(this.window.mouseMotionX, this.window.mouseMotionY);
 
             this.window.mouseMotionX = 0;
@@ -122,7 +126,9 @@ window.Minecraft = class {
         }
 
         // Render the game
-        this.worldRenderer.render(partialTicks);
+        if (this.hasInGameFocus()) {
+            this.worldRenderer.render(partialTicks);
+        }
         this.screenRenderer.render(partialTicks);
         this.itemRenderer.render(partialTicks);
     }
@@ -149,11 +155,13 @@ window.Minecraft = class {
     }
 
     onTick() {
-        // Tick world
-        this.world.onTick();
+        if (!this.isPaused()) {
+            // Tick world
+            this.world.onTick();
 
-        // Tick the player
-        this.player.onTick();
+            // Tick the player
+            this.player.onTick();
+        }
 
         // Update loading progress
         if (!(this.loadingScreen === null)) {
@@ -222,4 +230,8 @@ window.Minecraft = class {
         this.inventory.shiftSelectedSlot(delta);
     }
 
+    isPaused() {
+        return false;
+        //return !this.hasInGameFocus() && this.loadingScreen === null;
+    }
 }
\ No newline at end of file
diff --git a/src/js/net/minecraft/client/gui/IngameOverlay.js b/src/js/net/minecraft/client/gui/IngameOverlay.js
index 0cbdfeb..e28c16a 100644
--- a/src/js/net/minecraft/client/gui/IngameOverlay.js
+++ b/src/js/net/minecraft/client/gui/IngameOverlay.js
@@ -21,7 +21,7 @@ window.IngameOverlay = class extends Gui {
             " " + this.minecraft.world.lightUpdateQueue.length + " light updates," +
             " " + this.minecraft.worldRenderer.chunkSectionUpdateQueue.length + " chunk updates", 1, 1);
         this.drawString(stack, Math.floor(this.minecraft.player.x) + ", " + Math.floor(this.minecraft.player.y) + ", " + Math.floor(this.minecraft.player.z)
-            + " (" + Math.floor(this.minecraft.player.x >> 4) + ", " + Math.floor(this.minecraft.player.y >> 4) + ", " + Math.floor(this.minecraft.player.z >> 4) + ")", 1, 1 + 9);
+            + " (" + Math.floor(Math.floor(this.minecraft.player.x) >> 4) + ", " + Math.floor(Math.floor(this.minecraft.player.y) >> 4) + ", " + Math.floor(Math.floor(this.minecraft.player.z) >> 4) + ")", 1, 1 + 9);
     }
 
     renderCrosshair(stack, x, y) {
diff --git a/src/js/net/minecraft/client/world/World.js b/src/js/net/minecraft/client/world/World.js
index aa6a0dc..3cba175 100644
--- a/src/js/net/minecraft/client/world/World.js
+++ b/src/js/net/minecraft/client/world/World.js
@@ -211,7 +211,7 @@ window.World = class {
     }
 
     getTotalLightAt(x, y, z) {
-        if (y < 0) {
+        if (!this.blockExists(x, y, z)) {
             return 15;
         }