Create common AI strategy which supports all weapon types

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

@@ -0,0 +1,55 @@
+package com.bartlomiejpluta.demo.ai;
+
+import lombok.*;
+import com.bartlomiejpluta.base.api.ai.AI;
+import com.bartlomiejpluta.base.api.move.MoveEvent;
+import com.bartlomiejpluta.base.api.map.layer.object.ObjectLayer;
+import com.bartlomiejpluta.base.lib.ai.*;
+
+import com.bartlomiejpluta.demo.entity.Character;
+import com.bartlomiejpluta.demo.entity.Enemy;
+import com.bartlomiejpluta.demo.world.weapon.*;
+
+public class WeaponBasedAI implements AI {
+	private static final int RANGE = 10;
+	private static final int MIN_RANGE = 4;
+	private static final int MAX_RANGE = 8;
+	private final Enemy enemy;
+	private final Character target;
+	private final RunawayAI runawayAI;
+	private final SimpleEnemyAI meleeAI;
+	private final ArcherAI archerAI;
+
+	public WeaponBasedAI(@NonNull Enemy enemy, @NonNull Character target) {
+		this.enemy = enemy;
+		this.target = target;
+		this.runawayAI = new RunawayAI<>(enemy, target);
+		this.meleeAI = new SimpleEnemyAI(enemy, target, RANGE);
+		this.archerAI = new ArcherAI(enemy, target, MIN_RANGE, MAX_RANGE, RANGE);
+	}
+
+	public void recomputePath() {
+		meleeAI.recomputePath();
+		archerAI.recomputePath();
+	}
+
+	public void recomputePath(@NonNull MoveEvent event) {
+		meleeAI.recomputePath(event);
+		archerAI.recomputePath(event);
+	}
+
+	@Override
+	public void nextActivity(ObjectLayer layer, float dt) {
+		if(enemy.getWeapon() == null) {
+			runawayAI.nextActivity(layer, dt);
+		}
+
+		if(enemy.getWeapon() instanceof MeleeWeapon) {
+			meleeAI.nextActivity(layer, dt);
+		}
+
+		if(enemy.getWeapon() instanceof RangedWeapon) {
+			archerAI.nextActivity(layer, dt);
+		}
+	}
+}

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

@@ -30,6 +30,7 @@ public abstract class Character extends EntityDelegate {
 	@Getter
 	protected int hp;
 
+	@Getter
 	@Setter
 	private Weapon weapon;
 

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

@@ -103,4 +103,15 @@ public class Enemy extends Character implements NPC {
 
 		return this;
 	}
+
+	public Enemy defaultAI() {
+		var ai = new WeaponBasedAI(this, runner.getPlayer());
+
+		addEventListener(MoveEvent.TYPE, ai::recomputePath);
+		addEventListener(EnemyDiedEvent.TYPE, e -> ai.recomputePath());
+
+		this.ai = ai;
+
+		return this;
+	}
 }