Liquid Output Display (#6788)

* Liquid Output Display

* hshfhqwehpvoipwjovpwiqffjvpwqenoij0n89f4v123f2v40q9j8hbnwqvceinopjj90cmqwvinv21904uinfhu0bnv9j90h84g bvb8024q3bh80b3498vcfj932ndjqdjponjewopnviqvnifjwp9ghpnewuubgqjiojpdfoekwdckmpqwpkmidpkewpjndqvjwnfnj8132nt345879ytgh342890yu4598yhubn4t9hrj[tevpkofkwemfvewrphojfekpcfoerkfwmvfh23bng0398g9834ifvrfnwurbgiwnwgherhnwenhgpvrnnivjpjnipfqwjniwqfejnipofvniwejpfqjwociomjefjjmvcmj21m4f98v00ngbhegwefgpjroiewjfqfwpiojnmem

* Pull to separate function

The javadoc description could be different

* In case mods have liquid icons larger than 32x32

core/src/mindustry/entities/comp/BuildingComp.java

@@ -1119,6 +1119,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
 
     /** Draw the block overlay that is shown when a cursor is over the block. */
     public void drawSelect(){
+        block.drawOverlay(x, y, rotation);
     }
 
     public void drawDisabled(){

core/src/mindustry/world/Block.java

@@ -396,6 +396,7 @@ public class Block extends UnlockableContent implements Senseable{
     /** Drawn when you are placing a block. */
     public void drawPlace(int x, int y, int rotation, boolean valid){
         drawPotentialLinks(x, y);
+        drawOverlay(x * tilesize + offset, y * tilesize + offset, rotation);
     }
 
     public void drawPotentialLinks(int x, int y){
@@ -444,6 +445,9 @@ public class Block extends UnlockableContent implements Senseable{
         return width;
     }
 
+    /** Drawn when placing and when hovering over. */
+    public void drawOverlay(float x, float y, int rotation){
+    }
     public float sumAttribute(@Nullable Attribute attr, int x, int y){
         if(attr == null) return 0;
         Tile tile = world.tile(x, y);

core/src/mindustry/world/blocks/production/GenericCrafter.java

@@ -2,6 +2,7 @@ package mindustry.world.blocks.production;
 
 import arc.graphics.g2d.*;
 import arc.math.*;
+import arc.math.geom.*;
 import arc.struct.*;
 import arc.util.*;
 import arc.util.io.*;
@@ -15,6 +16,8 @@ import mindustry.world.*;
 import mindustry.world.draw.*;
 import mindustry.world.meta.*;
 
+import static mindustry.Vars.*;
+
 public class GenericCrafter extends Block{
     /** Written to outputItems as a single-element array if outputItems is null. */
     public @Nullable ItemStack outputItem;
@@ -138,6 +141,24 @@ public class GenericCrafter extends Block{
         drawer.getRegionsToOutline(this, out);
     }
 
+    @Override
+    public void drawOverlay(float x, float y, int rotation){
+        if(outputLiquids != null){
+            for(int i = 0; i < outputLiquids.length; i++){
+                int dir = liquidOutputDirections.length > i ? liquidOutputDirections[i] + rotation : -1;
+
+                if(dir != -1){
+                    Draw.rect(
+                        outputLiquids[i].liquid.fullIcon,
+                        x + Geometry.d4x(dir) * (size * tilesize / 2f + 4),
+                        y + Geometry.d4y(dir) * (size * tilesize / 2f + 4),
+                        8f, 8f
+                    );
+                }
+            }
+        }
+    }
+
     public class GenericCrafterBuild extends Building{
         public float progress;
         public float totalProgress;
@@ -303,4 +324,4 @@ public class GenericCrafter extends Block{
             if(legacyReadWarmup) read.f();
         }
     }
-}
+}