How to Rotate Turret?

Getting Started Newbie Questions
#1

Hi, I have been learning Corona for the past 4 weeks (off and on), so yes, I am quite new.

Question:

(1) How do you code to rotate a turret around a tank (from 0 to 90 degrees) by simply dragging it with your finger?

(2) Also, how do you code for firing a ball from the end of the turret, no matter the angle the turret is at? (something like creating an invisible ball to follow the end of the turret? Could be wrong)

So far:
(1) I have a tank
(2) I can shoot a ball from the end of the turret
(3) I can hit objects with the ball fired and cause objects to disappear.

Any help would be much appreciated!! Thank you :slight_smile:
[import]uid: 46629 topic_id: 9118 reply_id: 309118[/import]

#2

Here’s the API for object rotation;
http://developer.anscamobile.com/reference/index/objectrotate

You’d use the coordinates of the touch event to figure out where to rotate it.

Take a look at the simple pool example in the Corona Sample Code folder and check out how the line works when you click and drag on the ball. [import]uid: 52491 topic_id: 9118 reply_id: 33391[/import]