Dateien sortiert, Hintergrund angepasst, Platzierungslogik und Basis für Combat angelegt. Gewehr schießt und Gegner nehmen Schaden

Assets/Scripts/Ingame/Bullet.cs

@@ -0,0 +1,108 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+[RequireComponent(typeof(Rigidbody2D))]
+[RequireComponent(typeof(Collider2D))]
+public class Bullet : MonoBehaviour
+{
+    [Header("Runtime Values")]
+    private Vector2 direction;
+
+    private float speed;
+    private float damage;
+    private float maxDistance;
+
+    private float distanceTravelled;
+
+    private bool initialized;
+
+    // Speichert alle Gegner, die diese Kugel bereits getroffen hat.
+    private HashSet<Enemy> hitEnemies = new HashSet<Enemy>();
+
+    private Rigidbody2D rb;
+
+    private void Awake()
+    {
+        rb = GetComponent<Rigidbody2D>();
+
+        rb.gravityScale = 0f;
+        rb.bodyType = RigidbodyType2D.Kinematic;
+        rb.collisionDetectionMode =
+            CollisionDetectionMode2D.Continuous;
+    }
+
+    public void Initialize(
+        Vector2 shootDirection,
+        float bulletSpeed,
+        float bulletDamage,
+        float range
+    )
+    {
+        direction = shootDirection.normalized;
+
+        speed = bulletSpeed;
+        damage = bulletDamage;
+        maxDistance = range;
+
+        // Sprite zeigt standardmäßig mit seiner lokalen Y-Achse nach oben.
+        float angle =
+            Mathf.Atan2(direction.y, direction.x)
+            * Mathf.Rad2Deg - 90f;
+
+        transform.rotation =
+            Quaternion.Euler(0f, 0f, angle);
+
+        initialized = true;
+    }
+
+    private void FixedUpdate()
+    {
+        if (!initialized)
+            return;
+
+        float remainingDistance =
+            maxDistance - distanceTravelled;
+
+        if (remainingDistance <= 0f)
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        float movementDistance = Mathf.Min(
+            speed * Time.fixedDeltaTime,
+            remainingDistance
+        );
+
+        Vector2 movement =
+            direction * movementDistance;
+
+        rb.MovePosition(rb.position + movement);
+
+        distanceTravelled += movementDistance;
+
+        if (distanceTravelled >= maxDistance)
+        {
+            Destroy(gameObject);
+        }
+    }
+
+    private void OnTriggerEnter2D(Collider2D other)
+    {
+        Enemy enemy =
+            other.GetComponentInParent<Enemy>();
+
+        if (enemy == null)
+            return;
+
+        // Bereits getroffenen Gegner ignorieren.
+        if (!hitEnemies.Add(enemy))
+            return;
+
+        // Keine weiteren Treffer auf tote Gegner.
+        if (enemy.IsDead)
+            return;
+
+        enemy.TakeDamage(damage);
+    }
+}