[TASK] Show collected duck stickers

Assets/Scripts/Camera/TouchCamera.cs

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+// Just add this script to your camera. It doesn't need any configuration.
+
+using UnityEngine;
+
+public class TouchCamera : MonoBehaviour {
+	Vector2?[] oldTouchPositions = {
+		null,
+		null
+	};
+	Vector2 oldTouchVector;
+	float oldTouchDistance;
+
+	void Update() {
+		if (Input.touchCount == 0) {
+			oldTouchPositions[0] = null;
+			oldTouchPositions[1] = null;
+		}
+		else if (Input.touchCount == 1) {
+			if (oldTouchPositions[0] == null || oldTouchPositions[1] != null) {
+				oldTouchPositions[0] = Input.GetTouch(0).position;
+				oldTouchPositions[1] = null;
+			}
+			else {
+				Vector2 newTouchPosition = Input.GetTouch(0).position;
+				
+				transform.position += transform.TransformDirection((Vector3)((oldTouchPositions[0] - newTouchPosition) * GetComponent<Camera>().orthographicSize / GetComponent<Camera>().pixelHeight * 2f));
+				
+				oldTouchPositions[0] = newTouchPosition;
+			}
+		}
+		else {
+			if (oldTouchPositions[1] == null) {
+				oldTouchPositions[0] = Input.GetTouch(0).position;
+				oldTouchPositions[1] = Input.GetTouch(1).position;
+				oldTouchVector = (Vector2)(oldTouchPositions[0] - oldTouchPositions[1]);
+				oldTouchDistance = oldTouchVector.magnitude;
+			}
+			else {
+				Vector2 screen = new Vector2(GetComponent<Camera>().pixelWidth, GetComponent<Camera>().pixelHeight);
+				
+				Vector2[] newTouchPositions = {
+					Input.GetTouch(0).position,
+					Input.GetTouch(1).position
+				};
+				Vector2 newTouchVector = newTouchPositions[0] - newTouchPositions[1];
+				float newTouchDistance = newTouchVector.magnitude;
+
+				transform.position += transform.TransformDirection((Vector3)((oldTouchPositions[0] + oldTouchPositions[1] - screen) * GetComponent<Camera>().orthographicSize / screen.y));
+				transform.localRotation *= Quaternion.Euler(new Vector3(0, 0, Mathf.Asin(Mathf.Clamp((oldTouchVector.y * newTouchVector.x - oldTouchVector.x * newTouchVector.y) / oldTouchDistance / newTouchDistance, -1f, 1f)) / 0.0174532924f));
+				GetComponent<Camera>().orthographicSize *= oldTouchDistance / newTouchDistance;
+				transform.position -= transform.TransformDirection((newTouchPositions[0] + newTouchPositions[1] - screen) * GetComponent<Camera>().orthographicSize / screen.y);
+
+				oldTouchPositions[0] = newTouchPositions[0];
+				oldTouchPositions[1] = newTouchPositions[1];
+				oldTouchVector = newTouchVector;
+				oldTouchDistance = newTouchDistance;
+			}
+		}
+	}
+}

Assets/Scripts/Camera/TouchCamera.cs.meta

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