Payload fixes

core/src/mindustry/graphics/Drawf.java

@@ -4,17 +4,31 @@ import arc.*;
 import arc.graphics.*;
 import arc.graphics.g2d.*;
 import arc.math.*;
+import arc.math.geom.*;
 import arc.util.ArcAnnotate.*;
 import arc.util.*;
 import mindustry.*;
 import mindustry.gen.*;
 import mindustry.type.*;
 import mindustry.ui.*;
+import mindustry.world.*;
 
-import static mindustry.Vars.renderer;
+import static mindustry.Vars.*;
 
 public class Drawf{
 
+    public static void selected(int x, int y, Block block, Color color){
+        Draw.color(color);
+        for(int i = 0; i < 4; i++){
+            Point2 p = Geometry.d8edge[i];
+            float offset = -Math.max(block.size - 1, 0) / 2f * tilesize;
+            Draw.rect("block-select",
+            x*tilesize + block.offset() + offset * p.x,
+            y*tilesize + block.offset() + offset * p.y, i * 90);
+        }
+        Draw.reset();
+    }
+
     public static void shadow(float x, float y, float rad){
         Draw.color(0, 0, 0, 0.4f);
         Draw.rect("circle-shadow", x, y, rad, rad);

core/src/mindustry/input/InputHandler.java

@@ -229,15 +229,7 @@ public abstract class InputHandler implements InputProcessor, GestureListener{
     }
 
     public void drawSelected(int x, int y, Block block, Color color){
-        Draw.color(color);
-        for(int i = 0; i < 4; i++){
-            Point2 p = Geometry.d8edge[i];
-            float offset = -Math.max(block.size - 1, 0) / 2f * tilesize;
-            Draw.rect("block-select",
-                x*tilesize + block.offset() + offset * p.x,
-                y*tilesize + block.offset() + offset * p.y, i * 90);
-        }
-        Draw.reset();
+        Drawf.selected(x, y, block, color);
     }
 
     public void drawBreaking(BuildRequest request){

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

@@ -40,6 +40,23 @@ public class MassConveyor extends Block{
         edgeRegion = Core.atlas.find(name + "-edge");
     }
 
+    @Override
+    protected TextureRegion[] generateIcons(){
+        return new TextureRegion[]{Core.atlas.find(name + "-icon")};
+    }
+
+    @Override
+    public void drawPlace(int x, int y, int rotation, boolean valid){
+        super.drawPlace(x, y, rotation, valid);
+
+        for(int i = 0; i < 4; i++){
+            Tilec other = world.ent(x + Geometry.d4x[i] * size, y + Geometry.d4y[i] * size);
+            if(other != null && other.block().outputsPayload && other.block().size == size){
+                Drawf.selected(other.tileX(), other.tileY(), other.block(), Pal.accent);
+            }
+        }
+    }
+
     public class MassConveyorEntity extends TileEntity{
         public @Nullable Payload item;
         public float progress, itemRotation, animation;
@@ -53,7 +70,7 @@ public class MassConveyor extends Block{
 
             Tilec accept = nearby(Geometry.d4[rotation()].x * size, Geometry.d4[rotation()].y * size);
             //next block must be aligned and of the same size
-            if(accept.block().size == size &&
+            if(accept != null && accept.block().size == size &&
                 tileX() + Geometry.d4[rotation()].x * size == accept.tileX() && tileY() + Geometry.d4[rotation()].y * size == accept.tileY()){
                 next = accept;
             }
@@ -191,7 +208,7 @@ public class MassConveyor extends Block{
                 return !blocked || next != null;
             }else{
                 Tilec accept = nearby(Geometry.d4[direction].x * size, Geometry.d4[direction].y * size);
-                return accept.block().size == size && accept.block().outputsPayload &&
+                return accept != null && accept.block().size == size && accept.block().outputsPayload &&
                     //block must either be facing this one, or not be rotating
                     ((accept.tileX() + Geometry.d4[accept.rotation()].x * size == tileX() && accept.tileY() + Geometry.d4[accept.rotation()].y * size == tileY()) || !accept.block().rotate);
             }