Fix Turret bug when cheat (#8273)

* （C/S) Fix ItemTurret ammo when `cheat`.

* （C/S) Fix `TurretBuild.updateReload` NPE when `cheat`

core/src/mindustry/world/blocks/defense/turrets/ItemTurret.java

@@ -19,7 +19,7 @@ import mindustry.world.meta.*;
 import static mindustry.Vars.*;
 
 public class ItemTurret extends Turret{
-    public ObjectMap<Item, BulletType> ammoTypes = new ObjectMap<>();
+    public ObjectMap<Item, BulletType> ammoTypes = new OrderedMap<>();
 
     public ItemTurret(String name){
         super(name);
@@ -82,6 +82,17 @@ public class ItemTurret extends Turret{
     }
 
     public class ItemTurretBuild extends TurretBuild{
+
+        @Override
+        public void onProximityAdded(){
+            super.onProximityAdded();
+
+            //add first ammo item to cheaty blocks so they can shoot properly
+            if(!hasAmmo() && cheating() && ammoTypes.size > 0){
+                handleItem(this, ammoTypes.keys().next());
+            }
+        }
+
         @Override
         public void updateTile(){
             unit.ammo((float)unit.type().ammoCapacity * totalAmmo / maxAmmo);

core/src/mindustry/world/blocks/defense/turrets/Turret.java

@@ -500,8 +500,8 @@ public class Turret extends ReloadTurret{
             if(ammo.size >= 2 && ammo.peek().amount < ammoPerShot && ammo.get(ammo.size - 2).amount >= ammoPerShot){
                 ammo.swap(ammo.size - 1, ammo.size - 2);
             }
-            
-            return ammo.size > 0 && ammo.peek().amount >= ammoPerShot || cheating();
+
+            return ammo.size > 0 && (ammo.peek().amount >= ammoPerShot || cheating());
         }
 
         public boolean charging(){