More pattern matching

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

@@ -63,7 +63,7 @@ public class ConstructBlock extends Block{
         if(tile == null) return;
 
         float healthf = tile.build == null ? 1f : tile.build.healthf();
-        Seq<Building> prev = tile.build instanceof ConstructBuild ? ((ConstructBuild)tile.build).prevBuild : null;
+        Seq<Building> prev = tile.build instanceof ConstructBuild co ? co.prevBuild : null;
 
         tile.setBlock(block, team, rotation);
 

core/src/mindustry/world/blocks/distribution/StackConveyor.java

@@ -92,8 +92,8 @@ public class StackConveyor extends Block implements Autotiler{
     @Override
     public boolean rotatedOutput(int x, int y){
         Building tile = world.build(x, y);
-        if(tile instanceof StackConveyorBuild){
-            return ((StackConveyorBuild)tile).state != stateUnload;
+        if(tile instanceof StackConveyorBuild s){
+            return s.state != stateUnload;
         }
         return super.rotatedOutput(x, y);
     }

core/src/mindustry/world/blocks/power/PowerNode.java

@@ -246,9 +246,9 @@ public class PowerNode extends PowerBlock{
     public boolean linkValid(Building tile, Building link, boolean checkMaxNodes){
         if(tile == link || link == null || !link.block.hasPower || tile.team != link.team) return false;
 
-        if(overlaps(tile, link, laserRange * tilesize) || (link.block instanceof PowerNode && overlaps(link, tile, ((PowerNode)link.block).laserRange * tilesize))){
-            if(checkMaxNodes && link.block instanceof PowerNode){
-                return link.power.links.size < ((PowerNode)link.block).maxNodes || link.power.links.contains(tile.pos());
+        if(overlaps(tile, link, laserRange * tilesize) || (link.block instanceof PowerNode node && overlaps(link, tile, node.laserRange * tilesize))){
+            if(checkMaxNodes && link.block instanceof PowerNode node){
+                return link.power.links.size < node.maxNodes || link.power.links.contains(tile.pos());
             }
             return true;
         }