I need some help with this

mdk5316

I have a simple circle that has a barrel on it. I need to know how to get the barrel to move back and forth around the circle. And when i click the button, i need to know how to fire a projectile in the direction of the barrel's angle. If anyone can help, it would be appreciated greatly

ozboybrian

It would have something to do with.

When Key up is touched move to self.position y + 10. Along those lines.

Might wanna look at the cannon template in GameSalad, see how that's done.

tenrdrmer

Go check out CodeMonkeys Example Rotations. Its basically what you are looking for.

mdk5316

Do you have a link to that example?

tenrdrmer

No sorry. Codemonkey has posts in the stickies Just click on his username and look through all of his stuff he's actually got a lot of good stuff there.

mattyr64

you can use Rotate to Position > set position co-ords to game.Touches.Touch1.X and game.Touches.Touch1.Y

That will cause the object to rotate around to the spot you touch.

to fire an object you could...

Spawn actor > bullet on touch release. ensure that angle is set to relative to actor in the spawn rule
(you can also offest X and Y pos of the spawn to make it come from the end of the barrel)

just make sure that your bullet actor has a Move/Acclerate rule setup on it so it has a speed.

mdk5316

Well ultimately what i want to accomplish is to have the barrel in constant motion, rotating from 45 to -45 degrees. Then when i fire, it needs to in the direction of the barrel. Here's a good example i found that is basically what i envision.