Insect/leg unit step sound

core/src/mindustry/audio/SoundPriority.java

@@ -59,8 +59,11 @@ public class SoundPriority{
             sound.setMinConcurrentInterrupt(Math.min(0.25f, sound.getLength() * 0.5f));
         }
 
-        mechStep.setMinConcurrentInterrupt(0.3f);
+        mechStep.setMinConcurrentInterrupt(0.5f);
-        mechStep.setMaxConcurrent(3);
+        walkerStep.setMinConcurrentInterrupt(0.6f);
+
+        mechStep.setMaxConcurrent(4);
+        walkerStep.setMaxConcurrent(4);
     }
 
     static void max(int max, Sound... sounds){

core/src/mindustry/content/UnitTypes.java

@@ -551,6 +551,10 @@ public class UnitTypes{
             rotateSpeed = 1.5f;
             drownTimeMultiplier = 1.6f;
 
+            stepSound = Sounds.walkerStep;
+            stepSoundVolume = 1.1f;
+            stepSoundPitch = 0.9f;
+
             legCount = 4;
             legLength = 14f;
             legBaseOffset = 11f;
@@ -778,6 +782,10 @@ public class UnitTypes{
             legSpeed = 0.2f;
             ammoType = new PowerAmmoType(2000);
 
+            stepSound = Sounds.walkerStep;
+            stepSoundVolume = 0.75f;
+            stepSoundPitch = 1.1f;
+
             legSplashDamage = 32;
             legSplashRange = 30;
 
@@ -865,6 +873,8 @@ public class UnitTypes{
             health = 22000;
             armor = 13f;
             lightRadius = 140f;
+            stepSound = Sounds.walkerStep;
+            stepSoundVolume = 1.1f;
 
             rotateSpeed = 1.9f;
 
@@ -3375,6 +3385,10 @@ public class UnitTypes{
             legMaxLength = 1.3f;
             researchCostMultiplier = 0f;
 
+            stepSound = Sounds.walkerStep;
+            stepSoundVolume = 1f;
+            stepSoundPitch = 1f;
+
             abilities.add(new ShieldArcAbility(){{
                 region = "tecta-shield";
                 radius = 45f;
@@ -3478,6 +3492,10 @@ public class UnitTypes{
             legStraightness = 0.6f;
             baseLegStraightness = 0.5f;
 
+            stepSound = Sounds.walkerStep;
+            stepSoundVolume = 1.1f;
+            stepSoundPitch = 0.9f;
+
             legCount = 8;
             legLength = 30f;
             legForwardScl = 2.1f;

core/src/mindustry/entities/comp/LegsComp.java

@@ -179,6 +179,7 @@ abstract class LegsComp implements Posc, Rotc, Hitboxc, Unitc{
                             floor.walkSound.at(x, y, 1f, floor.walkSoundVolume);
                         }else{
                             Fx.unitLandSmall.at(l.base.x, l.base.y, type.rippleScale, floor.mapColor);
+                            type.stepSound.at(l.base.x, l.base.y, type.stepSoundPitch + Mathf.range(0.1f), type.stepSoundVolume);
                         }
 
                         //shake when legs contact ground

core/src/mindustry/entities/comp/MechComp.java

@@ -51,7 +51,7 @@ abstract class MechComp implements Posc, Hitboxc, Unitc, Mechc, ElevationMovec{
             if(type.mechStepParticles){
                 Effect.floorDust(cx, cy, hitSize/8f);
             }
-            type.stepSound.at(cx, cy, 1f + Mathf.range(0.1f), type.stepSoundVolume);
+            type.stepSound.at(cx, cy, type.stepSoundPitch + Mathf.range(0.1f), type.stepSoundVolume);
         }
 
         walkExtension = extendScl;

core/src/mindustry/io/SaveVersion.java

@@ -460,6 +460,8 @@ public abstract class SaveVersion extends SaveFileReader{
     }
 
     public void readWorldEntities(DataInput stream, Prov[] mapping) throws IOException{
+        IntSet used = new IntSet();
+        Seq<Entityc> reassign = new Seq<>();
 
         int amount = stream.readInt();
         for(int j = 0; j < amount; j++){
@@ -476,10 +478,20 @@ public abstract class SaveVersion extends SaveFileReader{
                 EntityGroup.checkNextId(id);
                 entity.id(id);
                 entity.read(in);
-                entity.add();
+                if(used.add(id)){
+                    entity.add();
+                }else{
+                    Log.warn("Duplicate entity ID in save: @ (@)", id, entity);
+                    reassign.add(entity);
+                }
             });
         }
 
+        for(var ent : reassign){
+            ent.id(EntityGroup.nextId());
+            ent.add();
+        }
+
         Groups.all.each(Entityc::afterReadAll);
     }
 

core/src/mindustry/type/UnitType.java

@@ -300,10 +300,12 @@ public class UnitType extends UnlockableContent implements Senseable{
     public Sound loopSound = Sounds.none;
     /** volume of loop sound */
     public float loopSoundVolume = 0.5f;
-    /** sound played when this mech unit does a step */
+    /** sound played when this mech/insect unit does a step */
     public Sound stepSound = Sounds.none;
     /** volume of step sound */
     public float stepSoundVolume = 0.5f;
+    /** base pitch of step sound */
+    public float stepSoundPitch = 1f;
     /** effect that this unit emits when falling */
     public Effect fallEffect = Fx.fallSmoke;
     /** effect created at engine when unit falls. */