How can I implement projectile motion like Angry Birds? [duplicate]

Question

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Tracking Object Position - Firing on a Trajectory

I need help in implementing the projectile motion in my game as was implemented in Angry Birds.

Please help.

Answer 1

Projectile motion is just a function of gravity and velocity. At every tick, decrease your vertical velocity by g (the force of gravity), and then add g to your current height. If you're having trouble doing this, come back and ask another question with some of the code that you've tried.

For a more in depth look at the physics required in these sorts of games, Google around for some game development blogs or how-to's, or start with this one here.

Answer 2

Physics.

Specifically look at http://en.wikipedia.org/wiki/Hooke's_law, http://en.wikipedia.org/wiki/Equations_of_motion and the application of a constant force of gravity.

Obviously if you're not sure about how to apply these things together, perhaps look at implementing a Physics engine.

Answer 3

Here is some code for doing exactly what your ask for...

http://developer.anscamobile.com/code/how-make-angry-birds-catapult

It's written in Lua and uses the Corona SDK. But I'm sure you could port it over to whatever platform you are working on.

Answer 4

Just read this tutorial(its a series so go through all of them): http://www.emanueleferonato.com/2011/11/03/develop-a-flash-game-like-angry-birds-using-box2d-predictive-trajectory-line/

Answer 5

You haven't told us what is the problem. Anyway, I guess you are asking how to do it. Here is a link.

Implementing the equations is not hard at all.