Asset for 2d ball throwing, or how to write one yourself?

Question

Unity

So that you can swap and, depending on the strength and direction of the swap, the ball flew there, throw off the guide, or some kind of asset on this. Thanks

Answer 1

You take the point of the first touch, you mark the current game time. Then you check when this touch has disappeared, you look at the time difference. Also consider the distance between them. Using distance and time, you can calculate the impact force, you can choose your own formula, for example, speed depends more on distance or vice versa, the less time has passed, the stronger, but both are better. Also, knowing two points, you can easily find the impact vector.