Implement simple camp & hunt AI for enemies

src/main/java/com/bartlomiejpluta/demo/ai/SimpleSniperAI.java

@@ -0,0 +1,27 @@
+package com.bartlomiejpluta.demo.ai;
+
+import lombok.*;
+import com.bartlomiejpluta.base.api.map.layer.object.ObjectLayer;
+import com.bartlomiejpluta.base.api.ai.*;
+import com.bartlomiejpluta.base.lib.ai.*;
+
+import com.bartlomiejpluta.demo.entity.Enemy;
+import com.bartlomiejpluta.demo.entity.Character;
+
+@AllArgsConstructor
+public class SimpleSniperAI implements AI {
+	private final Enemy enemy;
+	private Character target;
+	private int range;
+
+	@Override
+	public void nextActivity(ObjectLayer layer, float dt) {
+		var enemyCoords = enemy.getCoordinates();
+		var targetCoords = target.getCoordinates();
+		if(enemy.manhattanDistance(target) <= range && (enemyCoords.x() == targetCoords.x() || enemyCoords.y() == targetCoords.y())) {
+			var direction = enemy.getDirectionTowards(target);
+			enemy.setFaceDirection(direction);
+			enemy.attack();
+		}
+	}
+}

src/main/java/com/bartlomiejpluta/demo/database/dao/EnemyDAO.java

@@ -25,6 +25,7 @@ public class EnemyDAO {
 					.animationSpeed(result.getFloat("animation_speed"))
 					.blocking(result.getBoolean("blocking"))
 					.meleeWeapon(result.getString("melee_weapon"))
+					.rangedWeapon(result.getString("ranged_weapon"))
 					.dieAnimation(result.getString("die_animation"))
 					.dieSound(result.getString("die_sound"))
 					.build();

src/main/java/com/bartlomiejpluta/demo/database/model/EnemyModel.java

@@ -14,6 +14,7 @@ public class EnemyModel {
 	private final float animationSpeed;
 	private final boolean blocking;
 	private final String meleeWeapon;
+	private final String rangedWeapon;
 	private final String dieAnimation;
 	private final String dieSound;
 }

src/main/java/com/bartlomiejpluta/demo/entity/Enemy.java

@@ -13,7 +13,7 @@ import com.bartlomiejpluta.base.lib.animation.*;
 
 import com.bartlomiejpluta.demo.runner.DemoRunner;
 import com.bartlomiejpluta.demo.database.model.EnemyModel;
-import com.bartlomiejpluta.demo.world.weapon.MeleeWeapon;
+import com.bartlomiejpluta.demo.world.weapon.*;
 import com.bartlomiejpluta.demo.event.EnemyDiedEvent;
 import com.bartlomiejpluta.demo.ai.*;
 
@@ -30,7 +30,16 @@ public class Enemy extends Character implements NPC {
 		setSpeed(template.getSpeed());
 		setAnimationSpeed(template.getAnimationSpeed());
 		setBlocking(template.isBlocking());
-		setWeapon(new MeleeWeapon(context, ((DemoRunner) context.getGameRunner()).getMeleeWeaponDAO().get(template.getMeleeWeapon())));
+		var runner = (DemoRunner) context.getGameRunner();
+		var meleeWeaponTemplate = template.getMeleeWeapon();
+		var rangedWeaponTemplate = template.getRangedWeapon();
+
+		if(meleeWeaponTemplate != null) {
+			setWeapon(new MeleeWeapon(context, runner.getMeleeWeaponDAO().get(meleeWeaponTemplate)));
+		} else if(rangedWeaponTemplate != null) {
+			setWeapon(new RangedWeapon(context, runner.getRangedWeaponDAO().get(rangedWeaponTemplate)));
+		}
+
 		this.dieAnimation = new SimpleAnimationRunner(template.getDieAnimation());
 	}
 
@@ -69,4 +78,12 @@ public class Enemy extends Character implements NPC {
 
 		return this;
 	}
+
+	public Enemy campAndHunt(Character target, int range) {
+		var ai = new SimpleSniperAI(this, target, range);
+
+		this.ai = ai;
+
+		return this;
+	}
 }