Initial commit

Assets/Scripts/GunHandler.cs

@@ -0,0 +1,69 @@
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+public class GunHandler : MonoBehaviour
+{
+    public SpriteRenderer bulletTemplate;
+    private bool hasAutoRotated = false;
+
+    void Update()
+    {
+        if (GamePlayer.instance.pausePanel.activeSelf) return;
+
+        Vector2 mouseScreenPos = Mouse.current.position.ReadValue();
+        Vector3 mouseWorldPos = Camera.main.ScreenToWorldPoint(
+            new Vector3(mouseScreenPos.x, mouseScreenPos.y, -Camera.main.transform.position.z)
+        );
+
+        Vector2 direction = mouseWorldPos - transform.position;
+        bool flipped = transform.parent.localScale.x > 0f;
+
+        if (flipped)
+        {
+            direction.x = -direction.x;
+            direction.y = -direction.y;
+        }
+
+        float angle = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
+        float minAngle = flipped ? -70f : -75f;
+        float maxAngle = flipped ? 75f : 70f;
+        float clamped = Mathf.Clamp(angle, minAngle, maxAngle);
+
+        if (angle < minAngle || angle > maxAngle)
+        {
+            if (!hasAutoRotated)
+            {
+                hasAutoRotated = true;
+                Vector3 scale = transform.parent.localScale;
+                scale.x *= -1;
+                transform.parent.localScale = scale;
+                flipped = !flipped;
+
+                direction.x = -direction.x;
+                direction.y = -direction.y;
+                clamped = Mathf.Clamp(Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg, flipped ? -70f : -75f, flipped ? 75f : 70f);
+            }
+        }
+        else if (hasAutoRotated)
+        {
+            hasAutoRotated = false;
+        }
+
+        transform.rotation = Quaternion.Euler(0f, 0f, clamped);
+
+        if (Keyboard.current.leftShiftKey.wasPressedThisFrame || Keyboard.current.rightShiftKey.wasPressedThisFrame)
+        {
+            Vector3 offset = new(0.6932073f, 0.352302f, 0f);
+            if (flipped) offset.x = -offset.x;
+            Vector3 spawnPos = transform.position + transform.rotation * offset;
+            var bullet = Instantiate(bulletTemplate, spawnPos, Quaternion.identity);
+            bullet.transform.rotation = Quaternion.Euler(0f, 0f, transform.rotation.eulerAngles.z + (flipped ? 0 : 180f));
+            bullet.gameObject.name = "Bullet";
+            bullet.gameObject.SetActive(true);
+
+            float angleRad = bullet.transform.eulerAngles.z * Mathf.Deg2Rad;
+            Vector2 dir = new(-Mathf.Cos(angleRad), -Mathf.Sin(angleRad));
+            bullet.GetComponent<Rigidbody2D>().linearVelocity = dir * 10f;
+        }
+    }
+}