Misc preparations for unified packing

core/src/mindustry/world/blocks/ConstructBlock.java

@@ -41,6 +41,7 @@ public class ConstructBlock extends Block{
         health = 10;
         consumesTap = true;
         solidifes = true;
+        generateIcons = false;
         inEditor = false;
         consBlocks[size - 1] = this;
         sync = true;

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

@@ -13,6 +13,7 @@ public class AirBlock extends Floor{
         hasShadow = false;
         useColor = false;
         wall = this;
+        generateIcons = false;
         needsSurface = false;
         canShadow = false;
     }

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

@@ -161,8 +161,8 @@ public class Floor extends Block{
             return;
         }
 
-        PixmapRegion image = Core.atlas.getPixmap(icons()[0]);
-        PixmapRegion edge = Core.atlas.getPixmap(Core.atlas.find(name + "-edge-stencil", "edge-stencil"));
+        var image = Core.atlas.getPixmap(icons()[0]);
+        var edge = Core.atlas.getPixmap(Core.atlas.find(name + "-edge-stencil", "edge-stencil"));
         Pixmap result = new Pixmap(edge.width, edge.height);
 
         for(int x = 0; x < edge.width; x++){

core/src/mindustry/world/blocks/legacy/LegacyBlock.java

@@ -8,6 +8,7 @@ public class LegacyBlock extends Block{
     public LegacyBlock(String name){
         super(name);
         inEditor = false;
+        generateIcons = false;
     }
 
     /** Removes this block from the world, or replaces it with something else. */