Added rollback into the admin menu, fixed a bug where players would crash upon trying to view their own logs on relog.

core/src/io/anuke/mindustry/ui/dialogs/RollbackDialog.java

@@ -0,0 +1,41 @@
+package io.anuke.mindustry.ui.dialogs;
+
+import io.anuke.mindustry.net.NetEvents;
+import io.anuke.ucore.scene.ui.Label;
+import io.anuke.ucore.scene.ui.TextField;
+import io.anuke.ucore.scene.ui.layout.Table;
+import io.anuke.ucore.util.Strings;
+import static io.anuke.mindustry.Vars.*;
+
+public class RollbackDialog extends FloatingDialog {
+	
+	public RollbackDialog(){
+		super("$text.server.rollback");
+		
+		setup();
+		shown(this::setup);
+	}
+	
+	private void setup(){
+		content().clear();
+		buttons().clear();
+		
+		if(gwt) return;
+		
+		content().row();
+		content().add("$text.server.rollback.numberfield");
+		
+		TextField field = content().addField("", t->{}).get();
+		field.setTextFieldFilter((f, c) -> field.getText().length() < 4);
+		content().add(field).size(220f, 48f);
+		
+		content().row();
+		buttons().defaults().size(50f, 50f).left().pad(2f);
+		buttons().addButton("$text.cancel", this::hide);
+		
+		buttons().addButton("$text.ok", () -> {
+			NetEvents.handleRollbackRequest(Integer.valueOf(field.getText()));
+			hide();
+		}).disabled(b -> field.getText().isEmpty() || !Strings.canParsePostiveInt(field.getText()));
+	}
+}

core/src/io/anuke/mindustry/ui/fragments/BlocksFragment.java

@@ -5,11 +5,9 @@ import com.badlogic.gdx.graphics.Colors;
 import com.badlogic.gdx.graphics.g2d.TextureRegion;
 import com.badlogic.gdx.math.Interpolation;
 import com.badlogic.gdx.utils.Array;
-import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.core.GameState.State;
 import io.anuke.mindustry.input.InputHandler;
 import io.anuke.mindustry.net.EditLog;
-import io.anuke.mindustry.net.NetEvents;
 import io.anuke.mindustry.resource.*;
 import io.anuke.mindustry.ui.dialogs.FloatingDialog;
 import io.anuke.mindustry.world.Block;
@@ -364,14 +362,13 @@ public class BlocksFragment implements Fragment{
 		
 		d.content().add(pane).grow();
 		
-		Array<EditLog> logs = Vars.currentEditLogs;
-		if(logs == null || logs.size == 0) {
+		if(currentEditLogs == null || currentEditLogs.size == 0) {
 			table.add("$text.block.editlogsnotfound").left();
 			table.row();
 		}
 		else {
-			for(int i = 0; i < logs.size; i++) {
-				EditLog log = logs.get(i);
+			for(int i = 0; i < currentEditLogs.size; i++) {
+				EditLog log = currentEditLogs.get(i);
 				table.add("[gold]" + (i + 1) + ". [white]" + log.info()).left();
 				table.row();
 			}

core/src/io/anuke/mindustry/ui/fragments/PlayerListFragment.java

@@ -58,6 +58,10 @@ public class PlayerListFragment implements Fragment{
                     new button("$text.server.admins", () -> {
                         ui.admins.show();
                     }).padTop(-12).padBottom(-12).padRight(-12).fillY().cell.disabled(b -> Net.client());
+    
+                    new button("$text.server.rollback", () -> {
+                        ui.rollback.show();
+                    }).padTop(-12).padBottom(-12).padRight(-12).fillY().cell.disabled(b -> !player.isAdmin);
 
                 }}.pad(10f).growX().end();
             }}.end();