Dragging an Object with mouse in 2D

Questions & Answers
1

i want to drag a paddle in my game with mouse.I want game object to be dragged with mouse.The object is meant to be moved in y-axis only.Any help would be really appreciated.

2

Something like this in an Update method of your Game class:

// convert the touched screen position to 3D world position
//		Vector3 touchPos = Camera.main.ScreenToWorldPoint(Input.touches[0].position); // when using touch
		Vector3 touchPos = Camera.main.ScreenToWorldPoint(Input.mousePosition); // when using mouse

		// get the current position of the paddle GameObject or whatever you want to move
		Vector3 originalPaddlePos = paddleGameObject.transform.position;

		// replace the y coordinate with the y of touched pos.
		originalPaddlePos.y = touchPos.y;

		// set the paddle position to the modified one
		paddleGameObject.transform.position = originalPaddlePos;

If you’re using a physics engine you might want to move the paddle by applying forces to it rather than just moving it. Moving it might cause strange issues as you might just tell the paddle to move on top of the ball during 1 frame etc.