Projectile Class Trail Code

I can't seem to get this to work. It only draws one dot.

function Star:new()
local Star = display.newImage('star.png')
function Star:follow()
        local Starcopy = self
        function Star:followMe()
                local num = 0 
                if Starcopy.dots then num = #Starcopy.dots end
                local dot = display.newCircle( Starcopy.x, Starcopy.y, 30 )
                Starcopy.parent:insert(dot)
                Starcopy.dots[num + 1] = dot
        end
        self.timer = timer.performWithDelay(50, followMe, 0)
end
return Star
end
 
local sky = display.newGroup()
local Orion = Star:new()
sky:insert(Orion)
Orion.x = 50; Orion.y = 50
 
Orion:follow()
 
transition.to(Orion, {x = 1000, y = 1000, time = 8000})

Not getting the full picture from the code that you posted...
Have a few missing links...

what is Star ?
where is the end for function new() ?
function new() does not return any value to pass to variable Orion

can you post a fully working code for this ? the one with which you managed to print a single dot...

Thanks for the reply and point out my messiness. I edited the post with a solution. My problem was that in:
self.timer = timer.performWithDelay( 50, self.followMe, 0)
The self next to followMe refers to the timer and not star. And then:
self.timer = timer.performWithDelay( 50, self:followMe(), 0 )
Self refers to the star but this form, self:followMe(), is not correct for the timer to perform the same function in iterations.

The solution is to create a local copy of the star and then call it as an upvalue in the followMe() function.

views:1370 update：2011/10/5 21:23:48


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