it is done

core/src/mindustry/editor/DrawOperation.java

@@ -0,0 +1,95 @@
+package mindustry.editor;
+
+import mindustry.annotations.Annotations.Struct;
+import arc.struct.LongArray;
+import mindustry.game.Team;
+import mindustry.gen.TileOp;
+import mindustry.world.Block;
+import mindustry.world.Tile;
+import mindustry.world.blocks.Floor;
+
+import static mindustry.Vars.content;
+
+public class DrawOperation{
+    private MapEditor editor;
+    private LongArray array = new LongArray();
+
+    public DrawOperation(MapEditor editor) {
+        this.editor = editor;
+    }
+
+    public boolean isEmpty(){
+        return array.isEmpty();
+    }
+
+    public void addOperation(long op){
+        array.add(op);
+    }
+
+    public void undo(){
+        for(int i = array.size - 1; i >= 0; i--){
+            updateTile(i);
+        }
+    }
+
+    public void redo(){
+        for(int i = 0; i < array.size; i++){
+            updateTile(i);
+        }
+    }
+
+    private void updateTile(int i) {
+        long l = array.get(i);
+        array.set(i, TileOp.get(TileOp.x(l), TileOp.y(l), TileOp.type(l), getTile(editor.tile(TileOp.x(l), TileOp.y(l)), TileOp.type(l))));
+        setTile(editor.tile(TileOp.x(l), TileOp.y(l)), TileOp.type(l), TileOp.value(l));
+    }
+
+    short getTile(Tile tile, byte type){
+        if(type == OpType.floor.ordinal()){
+            return tile.floorID();
+        }else if(type == OpType.block.ordinal()){
+            return tile.blockID();
+        }else if(type == OpType.rotation.ordinal()){
+            return tile.rotation();
+        }else if(type == OpType.team.ordinal()){
+            return tile.getTeamID();
+        }else if(type == OpType.overlay.ordinal()){
+            return tile.overlayID();
+        }
+        throw new IllegalArgumentException("Invalid type.");
+    }
+
+    void setTile(Tile tile, byte type, short to){
+        editor.load(() -> {
+            if(type == OpType.floor.ordinal()){
+                tile.setFloor((Floor)content.block(to));
+            }else if(type == OpType.block.ordinal()){
+                Block block = content.block(to);
+                tile.setBlock(block, tile.getTeam(), tile.rotation());
+            }else if(type == OpType.rotation.ordinal()){
+                tile.rotation(to);
+            }else if(type == OpType.team.ordinal()){
+                tile.setTeam(Team.all[to]);
+            }else if(type == OpType.overlay.ordinal()){
+                tile.setOverlayID(to);
+            }
+        });
+        editor.renderer().updatePoint(tile.x, tile.y);
+    }
+
+    @Struct
+    class TileOpStruct{
+        short x;
+        short y;
+        byte type;
+        short value;
+    }
+
+    public enum OpType{
+        floor,
+        block,
+        rotation,
+        team,
+        overlay
+    }
+}