Closes Anuken/Mindustry-Suggestions/issues/4457

core/assets/bundles/bundle.properties

@@ -538,6 +538,8 @@ toolmode.eraseores = Erase Ores
 toolmode.eraseores.description = Erase only ores.
 toolmode.fillteams = Fill Teams
 toolmode.fillteams.description = Fill teams instead of blocks.
+toolmode.fillerase = Fill Erase
+toolmode.fillerase.description = Erase blocks of the same type.
 toolmode.drawteams = Draw Teams
 toolmode.drawteams.description = Draw teams instead of blocks.
 #unused

core/src/mindustry/editor/EditorTool.java

@@ -92,7 +92,7 @@ public enum EditorTool{
             });
         }
     },
-    fill(KeyCode.g, "replaceall", "fillteams"){
+    fill(KeyCode.g, "replaceall", "fillteams", "fillerase"){
         {
             edit = true;
         }
@@ -110,7 +110,7 @@ public enum EditorTool{
                 return;
             }
 
-            //mode 0 or 1, fill everything with the floor/tile or replace it
+            //mode 0 or standard, fill everything with the floor/tile or replace it
             if(mode == 0 || mode == -1){
                 //can't fill parts or multiblocks
                 if(tile.block().isMultiblock()){
@@ -147,6 +147,27 @@ public enum EditorTool{
                     if(dest == editor.drawTeam) return;
                     fill(x, y, true, t -> t.getTeamID() == dest.id && t.synthetic(), t -> t.setTeam(editor.drawTeam));
                 }
+            }else if(mode == 2){ //erase mode
+                Boolf<Tile> tester;
+                Cons<Tile> setter;
+
+                if(tile.block() != Blocks.air){
+                    Block dest = tile.block();
+                    tester = t -> t.block() == dest;
+                    setter = t -> t.setBlock(Blocks.air);
+                }else if(tile.overlay() != Blocks.air){
+                    Block dest = tile.overlay();
+                    tester = t -> t.overlay() == dest;
+                    setter = t -> t.setOverlay(Blocks.air);
+                }else{
+                    //trying to erase floor (no)
+                    tester = null;
+                    setter = null;
+                }
+
+                if(setter != null){
+                    fill(x, y, false, tester, setter);
+                }
             }
         }