Added sounds for picking up and dropping payloads

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

@@ -1,6 +1,7 @@
 package mindustry.entities.comp;
 
 import arc.*;
+import arc.audio.*;
 import arc.math.*;
 import arc.scene.ui.layout.*;
 import arc.struct.*;
@@ -105,6 +106,7 @@ abstract class PayloadComp implements Posc, Rotc, Hitboxc, Unitc{
         if(Vars.net.client()){
             Vars.netClient.clearRemovedEntity(unit.id);
         }
+        Sounds.payloadPickup.at(self(), Mathf.random(0.9f, 1.1f));
         Events.fire(new PickupEvent(self(), unit));
     }
 
@@ -114,6 +116,7 @@ abstract class PayloadComp implements Posc, Rotc, Hitboxc, Unitc{
         tile.afterPickedUp();
         addPayload(new BuildPayload(tile));
         Fx.unitPickup.at(tile);
+        Sounds.payloadPickup.at(self());
         Events.fire(new PickupEvent(self(), tile));
     }
 
@@ -177,6 +180,11 @@ abstract class PayloadComp implements Posc, Rotc, Hitboxc, Unitc{
         if(!u.isAdded()) u.team.data().updateCount(u.type, -1);
         u.add();
         u.unloaded();
+        Sound dropSound =
+            payload.size() <= 12f ? Sounds.payloadDrop1 :
+            payload.size() <= 20f ? Sounds.payloadDrop2 :
+            Sounds.payloadDrop3;
+        dropSound.at(self(), Mathf.random(0.9f, 1.1f));
         Events.fire(new PayloadDropEvent(self(), u));
 
         return true;
@@ -197,6 +205,7 @@ abstract class PayloadComp implements Posc, Rotc, Hitboxc, Unitc{
 
             Fx.unitDrop.at(tile);
             on.block().placeEffect.at(on.drawx(), on.drawy(), on.block().size);
+            on.block().placeSound.at(tile);
             return true;
         }