CameraMovement

Assets/Scripts/Player/CameraMovement.cs

@@ -0,0 +1,102 @@
+using UnityEngine;
+
+public class CameraMovement : MonoBehaviour
+{
+    [Header("Speed")]
+    [SerializeField]
+    float speed = 150f;
+
+    [SerializeField]
+    float fastSpeed = 300f;
+
+    [SerializeField]
+    float slowSpeed = 50f;
+
+    [Header("Zoom")]
+    [SerializeField]
+    float maxCameraSize = 100f;
+
+    [SerializeField]
+    float minCameraSize = 3f;
+
+    [SerializeField]
+    float cameraSizeSteps = 3f;
+
+    Vector2 cameraMovement;
+    float currentSpeed = 0.0f;
+
+    bool drag = false;
+
+    Vector3 origin;
+    Vector3 difference;
+
+
+
+    Camera cam;
+    Rigidbody2D rb;
+
+    void Start()
+    {
+        cam = GetComponent<Camera>();
+        rb = GetComponent<Rigidbody2D>();
+    }
+
+    void LateUpdate()
+    {
+        if (Input.GetMouseButton(2))
+        {
+            difference = (cam.ScreenToWorldPoint(Input.mousePosition) - cam.transform.position);
+            if (!drag)
+            {
+                drag = true;
+                origin = cam.ScreenToWorldPoint(Input.mousePosition);
+            }
+        }
+        else
+        {
+            drag = false;
+        }
+
+        if (drag)
+        {
+            cam.transform.position = origin - difference;
+        }
+    }
+
+    void Update()
+    {
+        currentSpeed = speed;
+
+        cameraMovement.x = Input.GetAxis("Horizontal");
+        cameraMovement.y = Input.GetAxis("Vertical");
+
+        if (Input.GetButton("CameraFast"))
+            currentSpeed = fastSpeed;
+        else if (Input.GetButton("CameraSlow"))
+            currentSpeed = slowSpeed;
+
+
+        if (Input.GetAxis("Mouse ScrollWheel") > 0f)
+            ZoomCameraToPoint(cam.ScreenToWorldPoint(Input.mousePosition), cameraSizeSteps);
+        else if (Input.GetAxis("Mouse ScrollWheel") < 0f)
+            ZoomCameraToPoint(cam.ScreenToWorldPoint(Input.mousePosition), -cameraSizeSteps);
+
+
+    }
+
+    void FixedUpdate()
+    {
+        rb.MovePosition(rb.position + cameraMovement * currentSpeed * Time.fixedDeltaTime);
+    }
+
+    void ZoomCameraToPoint(Vector3 point, float amount)
+    {
+        float multiplier = (1.0f / cam.orthographicSize * amount);
+
+        transform.position += (point - transform.position) * multiplier;
+
+        cam.orthographicSize -= amount;
+
+        cam.orthographicSize = Mathf.Clamp(cam.orthographicSize, minCameraSize, maxCameraSize);
+    }
+}