After installation on an iPhone or iPad all I get is a black screen. Any idea what is wrong?

Well I managed to rip apart the Flight control project to where it just shows one plane and the run way.
I was wondering if there was a way to set up boundaries where the plan can't fly outside of those boundaries. Say we had a maze that the plane had to fly through. If the plane tried to go through a wall it would cancel its path. is this possible?

I downloaded this last night to have a look, and I noticed that sometimes planes "lose" their path and go off screen. I think it happens when the paths of different planes intersect or when the paths end at the landing area close together. I started to look at the code to see where this gremlin was hiding but I can't figure it out. Any thoughts? Also, I'm VERY new to lua so it might be something obvious I'm missing. Thanks

Really great example of catmull splines but for a novice like me in game development I struggled to get my head round this at first.

As a result I have applied this code to a simpler example providing as many comments and references back to the SDK as well as the concept of catmull splines.

I hope my research into this subject helps. I have two postings at http://mygamingproject.blogspot.com/2011/12/catmull-splines-introduction.html and http://mygamingproject.blogspot.com/2011/12/catmull-splines-object-follows-path.html

The intention is to continue my study of which I will report further postings. Once finished will submit to the code exchange

I have found that this is due to a velocity too close to zero.

Solution 1
To correct this I added code to the followPoints(plane) method to ensure a high enough velocity.

Original Code:

1
2
3
4

local flightAngle = math.atan2((plane.y - point.y) , (plane.x - point.x) ) * (180 / math.pi)
        
        local velocityX = math.cos(math.rad(flightAngle)) * planeSpeed * -1
        local velocityY = math.sin(math.rad(flightAngle)) * planeSpeed * -1

Modified Code:

1
2
3
4
5
6
7
8
9
10

        local flightAngle = math.atan2((plane.y - point.y) , (plane.x - point.x) ) * (180 / math.pi)
        
        local velocityX = math.cos(math.rad(flightAngle)) * planeSpeed * -1
        local velocityY = math.sin(math.rad(flightAngle)) * planeSpeed * -1
        while(math.abs(velocityX) < 0.001)do
                velocityX = velocityX * 10
        end
        while(math.abs(velocityY) < 0.001)do
                velocityY = velocityY * 10
        end

Solution 2
To correct this I modified code in the checkForNextPoint method. The new code only checks if the plane is close enough to the point, not if it has passed it.

Original Code:

1
2

if(     (velX < 0 and plane.x < dest.x and velY < 0 and plane.y < dest.y) or  (velX > 0 and plane.x > dest.x and velY < 0 and plane.y < dest.y) or
                                (velX > 0 and plane.x > dest.x and velY > 0 and plane.y > dest.y) or  (velX < 0 and plane.x < dest.x and velY > 0 and plane.y > dest.y) or #plane.points == 0) then

Modified Code:

1

if( (math.abs(dest.x - plane.x) < 1) and (math.abs(dest.y - plane.y) < 1) or #plane.points == 0) then