improve step sound

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

@@ -211,7 +211,14 @@ window.Minecraft = class {
                         let soundName = block.getSound().getBreakSound();
 
                         // Play sound
-                        this.soundManager.playSound(soundName, hitResult.x + 0.5, hitResult.y + 0.5, hitResult.z + 0.5, 1.0);
+                        this.soundManager.playSound(
+                            soundName,
+                            hitResult.x + 0.5,
+                            hitResult.y + 0.5,
+                            hitResult.z + 0.5,
+                            1.0,
+                            1.0
+                        );
 
                         // Destroy block
                         this.world.setBlockAt(hitResult.x, hitResult.y, hitResult.z, 0);
@@ -241,7 +248,11 @@ window.Minecraft = class {
                     // Don't place blocks if the player is standing there
                     if (!placedBoundingBox.intersects(this.player.boundingBox)) {
                         let typeId = this.inventory.getItemInSelectedSlot();
-                        if (typeId !== 0) {
+
+                        // Get previous block
+                        let prevTypeId = this.world.getBlockAt(x, y, z);
+
+                        if (typeId !== 0 && prevTypeId !== typeId) {
                             // Place block
                             this.world.setBlockAt(x, y, z, typeId);
 
@@ -252,7 +263,14 @@ window.Minecraft = class {
                             // Play sound
                             let sound = block.getSound();
                             let soundName = sound.getStepSound();
-                            this.soundManager.playSound(soundName, hitResult.x + 0.5, hitResult.y + 0.5, hitResult.z + 0.5, sound.getPitch() * 0.8);
+                            this.soundManager.playSound(
+                                soundName,
+                                hitResult.x + 0.5,
+                                hitResult.y + 0.5,
+                                hitResult.z + 0.5,
+                                1.0,
+                                sound.getPitch() * 0.8
+                            );
                         }
                     }
                 }

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

@@ -296,7 +296,7 @@ window.Player = class {
 
                 // Play sound
                 if (!block.isLiquid()) {
-                    this.minecraft.soundManager.playSound(sound.getStepSound(), this.x, this.y, this.z, sound.getPitch());
+                    this.minecraft.soundManager.playSound(sound.getStepSound(), this.x, this.y, this.z, 0.15, sound.getPitch());
                 }
             }
         }

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

@@ -58,7 +58,7 @@ window.SoundManager = class {
         return sound;
     }
 
-    playSound(name, x, y, z, pitch) {
+    playSound(name, x, y, z, volume, pitch) {
         let pool = this.soundPool[name];
 
         if (typeof pool === "undefined") {
@@ -76,7 +76,8 @@ window.SoundManager = class {
             // Update position
             sound.position.set(x, y, z);
 
-            // Update pitch
+            // Update volume and pitch
+            sound.setVolume(volume);
             sound.filters[0].frequency.setValueAtTime(12000 * pitch, sound.context.currentTime);
 
             // Play sound