fix sound issues

src/js/net/minecraft/client/entity/Player.js

@@ -45,7 +45,7 @@ window.Player = class {
         this.timeFovChanged = 0;
 
         this.distanceWalked = 0;
-        this.nextStepDistance = 0;
+        this.nextStepDistance = 1;
     }
 
     respawn() {
@@ -248,6 +248,8 @@ window.Player = class {
         let prevX = this.x;
         let prevZ = this.z;
 
+        let isSlow = this.onGround && this.sneaking;
+
         let value = 0.16277136 / (prevSlipperiness * prevSlipperiness * prevSlipperiness);
         let friction;
 
@@ -275,6 +277,8 @@ window.Player = class {
         this.motionY *= 0.98;
         this.motionZ *= slipperiness;
 
+        // Step sound
+        if (!isSlow) {
             let blockX = MathHelper.floor_double(this.x);
             let blockY = MathHelper.floor_double(this.y - 0.2);
             let blockZ = MathHelper.floor_double(this.z);
@@ -283,10 +287,9 @@ window.Player = class {
             let distanceX = this.x - prevX;
             let distanceZ = this.z - prevZ;
 
-        // Step sound
             this.distanceWalked += Math.sqrt(distanceX * distanceX + distanceZ * distanceZ) * 0.6;
             if (this.distanceWalked > this.nextStepDistance && typeId !== 0) {
-            this.nextStepDistance++;
+                this.nextStepDistance = this.distanceWalked + 1;
 
                 let block = Block.getById(typeId);
                 let sound = block.getSound();
@@ -297,6 +300,7 @@ window.Player = class {
                 }
             }
         }
+    }
 
     getBlockSlipperiness() {
         return this.onGround ? 0.6 : 1.0;

src/js/net/minecraft/client/sound/SoundManager.js

@@ -38,7 +38,9 @@ window.SoundManager = class {
     }
 
     loadSound(path) {
-        let scope = this;
+        if (!this.isCreated()) {
+            return;
+        }
 
         // Create sound
         let sound = new THREE.PositionalAudio(this.audioListener);
@@ -47,6 +49,7 @@ window.SoundManager = class {
         sound.setFilter(sound.context.createBiquadFilter());
 
         // Load sound
+        let scope = this;
         this.audioLoader.load(path, function (buffer) {
             sound.setBuffer(buffer);
             scope.scene.add(sound);