Added ground unit factory support

core/src/io/anuke/mindustry/entities/TileEntity.java

@@ -37,8 +37,8 @@ public class TileEntity extends Entity{
 	public TileEntity init(Tile tile, boolean added){
 		this.tile = tile;
 		this.added = added;
-		x = tile.worldx();
-		y = tile.worldy();
+		x = tile.drawx();
+		y = tile.drawy();
 
 		health = tile.block().health;
 		

core/src/io/anuke/mindustry/entities/units/FlyingUnitType.java

@@ -24,6 +24,7 @@ public class FlyingUnitType extends UnitType {
         speed = 0.2f;
         maxVelocity = 4f;
         drag = 0.01f;
+        isFlying = true;
     }
 
     @Override

core/src/io/anuke/mindustry/entities/units/UnitType.java

@@ -54,6 +54,10 @@ public abstract class UnitType {
         //TODO doesn't do anything
     }
 
+    public boolean isFlying(){
+        return isFlying;
+    }
+
     public void update(BaseUnit unit){
         if(unit.hitTime > 0){
             unit.hitTime -= Timers.delta();