Health HUD reskinning based on team

src/main/java/org/terasology/ligthandshadow/componentsystem/LASUtils.java

@@ -23,6 +23,7 @@ public final class LASUtils {
     public static final String RED_FLAG_URI = "lightAndShadowResources:redFlag";
     public static final String RED_TEAM = "red";
     public static final String BLACK_TEAM = "black";
+    public static final String WHITE_TEAM = "white";
     /**
      * Position of Red base
      */
@@ -99,4 +100,30 @@ public static Vector3f getTeleportDestination(String team) {
         }
         return null;
     }
+
+    public static String getHealthIcon (String team) {
+        if (team.equals(RED_TEAM)) {
+            return RED_HEALTH_ICON;
+        }
+        if (team.equals(BLACK_TEAM)) {
+            return BLACK_HEALTH_ICON;
+        }
+        if (team.equals(WHITE_TEAM)) {
+            return WHITE_HEALTH_ICON;
+        }
+        return null;
+    }
+
+    public static String getHealthSkin (String team) {
+        if (team.equals(RED_TEAM)) {
+            return RED_HEALTH_SKIN;
+        }
+        if (team.equals(BLACK_TEAM)) {
+            return BLACK_HEALTH_SKIN;
+        }
+        if (team.equals(WHITE_TEAM)) {
+            return WHITE_HEALTH_SKIN;
+        }
+        return null;
+    }
 }

src/main/java/org/terasology/ligthandshadow/componentsystem/controllers/ClientSkinSystem.java

@@ -24,16 +24,42 @@
 import org.terasology.entitySystem.systems.RegisterSystem;
 import org.terasology.ligthandshadow.componentsystem.LASUtils;
 import org.terasology.ligthandshadow.componentsystem.events.AddPlayerSkinToPlayerEvent;
+import org.terasology.ligthandshadow.componentsystem.events.SetPlayerHealthHUDEvent;
 import org.terasology.logic.location.LocationComponent;
+import org.terasology.logic.players.LocalPlayer;
 import org.terasology.registry.In;
+import org.terasology.rendering.nui.NUIManager;
+import org.terasology.rendering.nui.layers.hud.HealthHud;
+import org.terasology.rendering.nui.widgets.UIIconBar;
+import org.terasology.utilities.Assets;
 
+/**
+ * Handles changing players' health HUD and skin based on their teams.
+ */
 @RegisterSystem(RegisterMode.CLIENT)
 public class ClientSkinSystem extends BaseComponentSystem {
     @In
     private EntityManager entityManager;
+    @In
+    private NUIManager nuiManager;
+    @In
+    private LocalPlayer localPlayer;
 
     private EntityBuilder builder;
 
+    @Override
+    public void initialise() {
+        HealthHud healthHud = nuiManager.getHUD().getHUDElement("core:healthHud", HealthHud.class);
+        healthHud.find("healthBar", UIIconBar.class).setIcon(Assets.getTextureRegion(LASUtils.getHealthIcon(LASUtils.WHITE_TEAM)).get());
+        healthHud.setSkin(Assets.getSkin(LASUtils.getHealthSkin(LASUtils.WHITE_TEAM)).get());
+    }
+
+    /**
+     * Changes player skin on receiving the corresponding event.
+     *
+     * @param event
+     * @param entity
+     */
     @ReceiveEvent
     public void onAddPlayerSkinToPlayer(AddPlayerSkinToPlayerEvent event, EntityRef entity) {
         EntityRef player = event.player;
@@ -49,4 +75,22 @@ public void onAddPlayerSkinToPlayer(AddPlayerSkinToPlayerEvent event, EntityRef
             builder.build();
         }
     }
+
+    /**
+     * Changes player health hud on receiving the corresponding event.
+     *
+     * @param event
+     * @param entity
+     */
+    @ReceiveEvent
+    public void onSetPlayerHealthHUDEvent(SetPlayerHealthHUDEvent event, EntityRef entity) {
+        EntityRef player = event.player;
+        String team = event.team;
+
+        if (player.getId() == localPlayer.getCharacterEntity().getId()) {
+            HealthHud healthHud = nuiManager.getHUD().getHUDElement("core:healthHud", HealthHud.class);
+            healthHud.find("healthBar", UIIconBar.class).setIcon(Assets.getTextureRegion(LASUtils.getHealthIcon(team)).get());
+            healthHud.setSkin(Assets.getSkin(LASUtils.getHealthSkin(team)).get());
+        }
+    }
 }

src/main/java/org/terasology/ligthandshadow/componentsystem/controllers/TeleporterSystem.java

@@ -28,12 +28,19 @@
 import org.terasology.ligthandshadow.componentsystem.components.LASTeamComponent;
 import org.terasology.ligthandshadow.componentsystem.components.SetTeamOnActivateComponent;
 import org.terasology.ligthandshadow.componentsystem.events.AddPlayerSkinToPlayerEvent;
+import org.terasology.ligthandshadow.componentsystem.events.SetPlayerHealthHUDEvent;
 import org.terasology.logic.characters.CharacterTeleportEvent;
 import org.terasology.logic.common.ActivateEvent;
 import org.terasology.logic.inventory.InventoryManager;
 import org.terasology.network.ClientComponent;
 import org.terasology.registry.In;
 
+/**
+ * Teleports players to play arena once they chose their team.
+ * It also sends events to change players skins and hud based on team they have chosen.
+ *
+ * @see ClientSkinSystem
+ */
 @RegisterSystem(RegisterMode.AUTHORITY)
 public class TeleporterSystem extends BaseComponentSystem {
     private static final Logger logger = LoggerFactory.getLogger(TeleporterSystem.class);
@@ -43,8 +50,13 @@ public class TeleporterSystem extends BaseComponentSystem {
     @In
     EntityManager entityManager;
 
-    /* Depending on which teleporter the player chooses, they are set to that team
-     * and teleported to that base */
+    /**
+     * Depending on which teleporter the player chooses, they are set to that team
+     * and teleported to that base
+     *
+     * @param event
+     * @param entity
+     */
     @ReceiveEvent(components = {SetTeamOnActivateComponent.class})
     public void onActivate(ActivateEvent event, EntityRef entity) {
         EntityRef player = event.getInstigator();
@@ -64,12 +76,17 @@ private void handlePlayerTeleport(EntityRef player, String team) {
         player.send(new CharacterTeleportEvent(LASUtils.getTeleportDestination(team)));
         inventoryManager.giveItem(player, EntityRef.NULL, entityManager.create(LASUtils.MAGIC_STAFF_URI));
         setPlayerSkin(player, team);
+        setPlayerHud(player, team);
     }
 
     private void setPlayerSkin(EntityRef player, String team) {
         sendEventToClients(new AddPlayerSkinToPlayerEvent(player, team));
     }
 
+    private void setPlayerHud(EntityRef player, String team) {
+        sendEventToClients(new SetPlayerHealthHUDEvent(player, team));
+    }
+
     private void sendEventToClients(Event event) {
         if (entityManager.getCountOfEntitiesWith(ClientComponent.class) != 0) {
             Iterable<EntityRef> clients = entityManager.getEntitiesWith(ClientComponent.class);

src/main/java/org/terasology/ligthandshadow/componentsystem/events/SetPlayerHealthHUDEvent.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 MovingBlocks
+ *
+ * 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.terasology.ligthandshadow.componentsystem.events;
+
+import org.terasology.entitySystem.entity.EntityRef;
+import org.terasology.entitySystem.event.Event;
+import org.terasology.network.BroadcastEvent;
+
+/**
+ * Event to change player health HUD.
+ */
+@BroadcastEvent
+public class SetPlayerHealthHUDEvent implements Event {
+    public EntityRef player;
+    public String team;
+
+    public SetPlayerHealthHUDEvent() {
+    }
+
+    public SetPlayerHealthHUDEvent(EntityRef player, String team) {
+        this.player = player;
+        this.team = team;
+    }
+}