Convert the talk screen to NUI

engine/src/main/java/org/destinationsol/game/screens/BuyItemsScreen.java

@@ -26,6 +26,7 @@
 import org.destinationsol.game.ship.SolShip;
 import org.destinationsol.ui.SolInputManager;
 import org.destinationsol.ui.SolUiControl;
+import org.destinationsol.ui.nui.screens.TalkScreen;
 
 public class BuyItemsScreen extends InventoryOperationsScreen {
     public final SolUiControl buyControl;

engine/src/main/java/org/destinationsol/game/screens/ChangeShipScreen.java

@@ -31,6 +31,7 @@
 import org.destinationsol.game.ship.hulls.HullConfig;
 import org.destinationsol.ui.SolInputManager;
 import org.destinationsol.ui.SolUiControl;
+import org.destinationsol.ui.nui.screens.TalkScreen;
 
 public class ChangeShipScreen extends InventoryOperationsScreen {
     private final SolUiControl changeControl;

engine/src/main/java/org/destinationsol/game/screens/GameScreens.java

@@ -20,6 +20,7 @@
 import org.destinationsol.game.context.Context;
 import org.destinationsol.ui.SolLayouts;
 import org.destinationsol.ui.nui.screens.MenuScreen;
+import org.destinationsol.ui.nui.screens.TalkScreen;
 
 import javax.inject.Inject;
 
@@ -49,7 +50,7 @@ public GameScreens(SolApplication cmp, Context context) {
         mapScreen = new MapScreen(rightPaneLayout, cmp.isMobile(), cmp.getOptions());
         menuScreen = (MenuScreen) cmp.getNuiManager().createScreen("engine:menuScreen");
         inventoryScreen = new InventoryScreen(cmp.getOptions());
-        talkScreen = new TalkScreen(layouts.menuLayout, cmp.getOptions());
+        talkScreen = (TalkScreen) cmp.getNuiManager().createScreen("engine:talkScreen");
         waypointCreationScreen = new WaypointCreationScreen(layouts.menuLayout, cmp.getOptions(), mapScreen);
         consoleScreen = new ConsoleScreen(context.get(Console.class));
     }

engine/src/main/java/org/destinationsol/game/screens/HireShipsScreen.java

@@ -25,6 +25,7 @@
 import org.destinationsol.mercenary.MercenaryUtils;
 import org.destinationsol.ui.SolInputManager;
 import org.destinationsol.ui.SolUiControl;
+import org.destinationsol.ui.nui.screens.TalkScreen;
 
 public class HireShipsScreen extends InventoryOperationsScreen {
     private final SolUiControl hireControl;

engine/src/main/java/org/destinationsol/game/screens/SellItems.java

@@ -24,6 +24,7 @@
 import org.destinationsol.game.ship.SolShip;
 import org.destinationsol.ui.SolInputManager;
 import org.destinationsol.ui.SolUiControl;
+import org.destinationsol.ui.nui.screens.TalkScreen;
 
 public class SellItems extends InventoryOperationsScreen {
     private static float PERC = .8f;

engine/src/main/java/org/destinationsol/ui/TutorialManager.java

@@ -198,9 +198,9 @@ public void start() {
         }
 
         if (mouseCtrl || mobile) {
-            addStep("See what there is to buy", screens.talkScreen.buyControl, true);
+            addStep("See what there is to buy", screens.talkScreen.getBuyButton(), true);
         } else {
-            addStep("See what there is to buy\n(" + gameOptions.getKeyBuyMenuName() + " key)", screens.talkScreen.buyControl, true);
+            addStep("See what there is to buy\n(" + gameOptions.getKeyBuyMenuName() + " key)", screens.talkScreen.getBuyButton(), true);
         }
 
         if (mobile) {

engine/src/main/java/org/destinationsol/ui/nui/screens/MainGameScreen.java

@@ -37,7 +37,6 @@
 import org.destinationsol.game.planet.Planet;
 import org.destinationsol.game.screens.BorderDrawer;
 import org.destinationsol.game.screens.GameScreens;
-import org.destinationsol.game.screens.TalkScreen;
 import org.destinationsol.game.screens.ZoneNameAnnouncer;
 import org.destinationsol.game.ship.SolShip;
 import org.destinationsol.ui.SolInputManager;
@@ -941,9 +940,11 @@ private void onTalkButtonClicked(UIWidget widget) {
         GameScreens gameScreens = game.getScreens();
 
         solInputManager.setScreen(solApplication, gameScreens.oldMainGameScreen);
-        if (!solInputManager.isScreenOn(gameScreens.talkScreen)) {
+        if (!nuiManager.hasScreen(gameScreens.talkScreen)) {
             gameScreens.talkScreen.setTarget(talkTarget);
-            solInputManager.addScreen(solApplication, gameScreens.talkScreen);
+            nuiManager.pushScreen(gameScreens.talkScreen);
+        } else {
+            nuiManager.removeScreen(gameScreens.talkScreen);
         }
     }
 

engine/src/main/java/org/destinationsol/ui/nui/screens/TalkScreen.java

@@ -0,0 +1,148 @@
+/*
+ * Copyright 2021 The Terasology Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.destinationsol.ui.nui.screens;
+
+import org.destinationsol.SolApplication;
+import org.destinationsol.game.Hero;
+import org.destinationsol.game.screens.InventoryScreen;
+import org.destinationsol.game.ship.SolShip;
+import org.destinationsol.game.ship.hulls.HullConfig;
+import org.destinationsol.ui.nui.NUIScreenLayer;
+import org.destinationsol.ui.nui.widgets.KeyActivatedButton;
+import org.destinationsol.ui.nui.widgets.UIWarnButton;
+import org.terasology.nui.backends.libgdx.GDXInputUtil;
+
+import javax.inject.Inject;
+
+/**
+ * The talk screen allows the player to perform actions at a station.
+ * At the moment, the player can buy and sell items from here, purchase new ships or hire mercenaries.
+ */
+public class TalkScreen extends NUIScreenLayer {
+    public static final float MAX_TALK_DIST = 1f;
+    private final SolApplication solApplication;
+    private UIWarnButton buyButton;
+    private KeyActivatedButton changeShipButton;
+    private KeyActivatedButton hireButton;
+    private SolShip target;
+
+    @Inject
+    public TalkScreen(SolApplication solApplication) {
+        this.solApplication = solApplication;
+    }
+
+    @Override
+    public void initialise() {
+        KeyActivatedButton sellButton = find("sellButton", KeyActivatedButton.class);
+        sellButton.setKey(GDXInputUtil.GDXToNuiKey(solApplication.getOptions().getKeySellMenu()));
+        sellButton.subscribe(button -> {
+            InventoryScreen inventoryScreen = solApplication.getGame().getScreens().inventoryScreen;
+            inventoryScreen.setOperations(inventoryScreen.sellItems);
+            nuiManager.removeScreen(this);
+            solApplication.getInputManager().addScreen(solApplication, inventoryScreen);
+        });
+
+        buyButton = find("buyButton", UIWarnButton.class);
+        buyButton.setKey(GDXInputUtil.GDXToNuiKey(solApplication.getOptions().getKeyBuyMenu()));
+        buyButton.subscribe(button -> {
+            InventoryScreen inventoryScreen = solApplication.getGame().getScreens().inventoryScreen;
+            inventoryScreen.setOperations(inventoryScreen.buyItemsScreen);
+            nuiManager.removeScreen(this);
+            solApplication.getInputManager().addScreen(solApplication, inventoryScreen);
+        });
+
+        changeShipButton = find("changeShipButton", KeyActivatedButton.class);
+        changeShipButton.setKey(GDXInputUtil.GDXToNuiKey(solApplication.getOptions().getKeyChangeShipMenu()));
+        changeShipButton.subscribe(button -> {
+            InventoryScreen inventoryScreen = solApplication.getGame().getScreens().inventoryScreen;
+            inventoryScreen.setOperations(inventoryScreen.changeShipScreen);
+            nuiManager.removeScreen(this);
+            solApplication.getInputManager().addScreen(solApplication, inventoryScreen);
+        });
+
+        hireButton = find("hireButton", KeyActivatedButton.class);
+        hireButton.setKey(GDXInputUtil.GDXToNuiKey(solApplication.getOptions().getKeyHireShipMenu()));
+        hireButton.subscribe(button -> {
+            InventoryScreen inventoryScreen = solApplication.getGame().getScreens().inventoryScreen;
+            inventoryScreen.setOperations(inventoryScreen.hireShipsScreen);
+            nuiManager.removeScreen(this);
+            solApplication.getInputManager().addScreen(solApplication, inventoryScreen);
+        });
+
+        KeyActivatedButton closeButton = find("closeButton", KeyActivatedButton.class);
+        closeButton.setKey(GDXInputUtil.GDXToNuiKey(solApplication.getOptions().getKeyClose()));
+        closeButton.subscribe(button -> {
+            nuiManager.removeScreen(this);
+        });
+    }
+
+    @Override
+    public void onAdded() {
+        boolean isStation = target.getHull().config.getType() == HullConfig.Type.STATION;
+        changeShipButton.setEnabled(isStation);
+        hireButton.setEnabled(isStation);
+    }
+
+    @Override
+    public void update(float delta) {
+        super.update(delta);
+
+        if (isTargetFar(solApplication.getGame().getHero())) {
+            nuiManager.removeScreen(this);
+        }
+    }
+
+    /**
+     * Returns the button pressed to open the buy items screen.
+     *
+     * This is exposed directly for use in the tutorial.
+     * @return the buy items button
+     */
+    public UIWarnButton getBuyButton() {
+        return buyButton;
+    }
+
+    /**
+     * Returns the current ship being talked to.
+     * @return the current ship being talked to
+     */
+    public SolShip getTarget() {
+        return target;
+    }
+
+    /**
+     * Assigns the ship to talk to
+     * @param target the ship to talk to
+     */
+    public void setTarget(SolShip target) {
+        this.target = target;
+    }
+
+    /**
+     * Returns true if the target is within communicating range.
+     * @return true, if the target is within communicating range, otherwise false
+     */
+    public boolean isTargetFar(Hero hero) {
+        if (hero.isTranscendent() || target == null || target.getLife() <= 0) {
+            return true;
+        }
+
+        float distance = target.getPosition().dst(hero.getPosition()) - hero.getHull().config.getApproxRadius() - target.getHull().config.getApproxRadius();
+
+        return (MAX_TALK_DIST < distance);
+    }
+}

engine/src/main/resources/org/destinationsol/assets/skins/talkScreen.skin

@@ -0,0 +1,23 @@
+{
+  "inherit": "engine:mainGameScreen",
+  "families": {
+    "talkScreenButton": {
+      "elements": {
+        "UIButton": {
+          "max-width": 320,
+          "max-height": 256
+        }
+      },
+      "font": "engine:main#1"
+    },
+    "talkScreenMenuBox": {
+      "max-width": 320,
+      "max-height": 800,
+      "elements": {
+        "UIBox": {
+          "background": "engine:background"
+        }
+      }
+    }
+  }
+}