Cleanup

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

@@ -30,7 +30,7 @@ public class LiquidTurret extends Turret{
     }
 
     /** Initializes accepted ammo map. Format: [liquid1, bullet1, liquid2, bullet2...] */
-    protected void ammo(Object... objects){
+    public void ammo(Object... objects){
         ammoTypes = OrderedMap.of(objects);
     }
 

core/src/mindustry/world/blocks/environment/AirBlock.java

@@ -0,0 +1,43 @@
+package mindustry.world.blocks.environment;
+
+import arc.*;
+import arc.graphics.g2d.*;
+import mindustry.annotations.Annotations.*;
+import mindustry.world.*;
+
+public class AirBlock extends Floor{
+
+    public AirBlock(String name){
+        super(name);
+        alwaysReplace = true;
+        hasShadow = false;
+        useColor = false;
+        wall = this;
+    }
+
+    @Override
+    public void drawBase(Tile tile){}
+
+    @OverrideCallSuper
+    @Override
+    public void load(){}
+
+    @OverrideCallSuper
+    @Override
+    public void init(){
+        decoration = this;
+    }
+
+    @Override
+    public boolean isHidden(){
+        return true;
+    }
+
+    @Override
+    public TextureRegion[] variantRegions(){
+        if(variantRegions == null){
+            variantRegions = new TextureRegion[]{Core.atlas.find("clear")};
+        }
+        return variantRegions;
+    }
+}

core/src/mindustry/world/blocks/environment/Boulder.java

@@ -6,7 +6,7 @@ import arc.math.*;
 import mindustry.world.*;
 
 public class Boulder extends Block{
-    protected int variants;
+    public int variants;
 
     public Boulder(String name){
         super(name);

core/src/mindustry/world/blocks/environment/SpawnBlock.java

@@ -0,0 +1,15 @@
+package mindustry.world.blocks.environment;
+
+import mindustry.world.*;
+
+public class SpawnBlock extends OverlayFloor{
+
+    public SpawnBlock(String name){
+        super(name);
+        variants = 0;
+        needsSurface = false;
+    }
+
+    @Override
+    public void drawBase(Tile tile){}
+}