feat: add luring behavior

assets/behaviors/lure.behavior

@@ -0,0 +1,24 @@
+{
+  dynamic: [
+      {
+        guard: {
+          componentPresent: "Behaviors:FindNearbyPlayers",
+          values: ["N charactersWithinRange nonEmpty"],
+          child: {
+          sequence: [
+            { sleep: {time: 0.1f }},
+            check_luring_item_in_use,
+            followCharacter,
+            { lookup: {tree: "Behaviors:follow" }}
+           ]
+          }
+        }
+      },
+      {
+        lookup: {
+          tree: "Behaviors:stray"
+        }
+      }
+  ]
+}
+

assets/prefabs/animals/sheepBase.prefab

@@ -87,5 +87,11 @@
       "engine:debris",
       "engine:sensor"
     ]
+  },
+  "Behavior": {
+    "tree": "WildAnimals:lure"
+  },
+  "FindNearbyPlayers": {
+    "searchRadius": 12
   }
 }

src/main/java/org/terasology/wildAnimals/actions/CheckLuringItemInUseAction.java

@@ -0,0 +1,47 @@
+// Copyright 2021 The Terasology Foundation
+// SPDX-License-Identifier: Apache-2.0
+
+package org.terasology.wildAnimals.actions;
+
+
+import org.terasology.behaviors.components.FindNearbyPlayersComponent;
+import org.terasology.engine.entitySystem.entity.EntityRef;
+import org.terasology.engine.logic.behavior.BehaviorAction;
+import org.terasology.engine.logic.behavior.core.Actor;
+import org.terasology.engine.logic.behavior.core.BaseAction;
+import org.terasology.engine.logic.behavior.core.BehaviorState;
+import org.terasology.engine.logic.characters.CharacterHeldItemComponent;
+import org.terasology.engine.world.block.BlockUri;
+import org.terasology.engine.world.block.items.BlockItemComponent;
+
+/**
+ * Behavior node that checks if the current held item can be used to lure
+ */
+
+@BehaviorAction(name = "check_luring_item_in_use")
+public class CheckLuringItemInUseAction extends BaseAction {
+
+    static final String[] LURING_ITEMS = {
+            "CoreAssets:TallGrass1",
+            "CoreAssets:TallGrass2",
+            "CoreAssets:TallGrass3",
+            "CoreAssets:Lavender",
+            "CoreAssets:Dandelion"
+    };
+
+    @Override
+    public BehaviorState modify(Actor actor, BehaviorState behaviorState) {
+        FindNearbyPlayersComponent component = actor.getComponent(FindNearbyPlayersComponent.class);
+        EntityRef player = component.closestCharacter;
+        CharacterHeldItemComponent characterHeldItemComponent = player.getComponent(CharacterHeldItemComponent.class);
+        EntityRef heldItem = characterHeldItemComponent.selectedItem;
+        BlockItemComponent blockItemComponent = heldItem.getComponent(BlockItemComponent.class);
+        for (String item : LURING_ITEMS) {
+            if (blockItemComponent != null && blockItemComponent.blockFamily.getURI().equals(new BlockUri(item))) {
+                return BehaviorState.SUCCESS;
+            }
+        }
+        return BehaviorState.FAILURE;
+    }
+}
+