Nil is not compatible with expected argument type 'UnsafePointer' Creating custom Physics Body












0















So I needed to create a custom physics body for my sprite in my project. I was looking for an easy way to do this as I had no Idea how too. I was pointed to this site that generates a physics body based on the points you plot. When I copied it into my project and changed some of the details to fit my sprite, I was met with the following error, "Nil is not compatible with expected argument type 'UnsafePointer'".



Here is the code for the physics body shape:



var offsetX = CGFloat(player.frame.size.width * player.anchorPoint.x)
var offsetY = CGFloat(player.frame.size.height * player.anchorPoint.y)

var path = CGMutablePath()

CGPathMoveToPoint(path, nil, 77 - offsetX, 175 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 173 - offsetY)
CGPathAddLineToPoint(path, nil, 177 - offsetX, 116 - offsetY)
CGPathAddLineToPoint(path, nil, 200 - offsetX, 100 - offsetY)
CGPathAddLineToPoint(path, nil, 187 - offsetX, 92 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 28 - offsetY)
CGPathAddLineToPoint(path, nil, 77 - offsetX, 26 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 29 - offsetY)
CGPathAddLineToPoint(path, nil, 25 - offsetX, 39 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 45 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 156 - offsetY)
CGPathAddLineToPoint(path, nil, 26 - offsetX, 161 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 172 - offsetY)
CGPathAddLineToPoint(path, nil, 70 - offsetX, 174 - offsetY)


path.closeSubpath()

player.physicsBody = SKPhysicsBody(polygonFrom: path)


This error pops up for each of the CGPathAddLineToPoint() lines. I know that this is wrong, I just don't know how to write it correctly, can someone help me out on this one?










share|improve this question

























  • Don't use those Objective-C functions. Use the instance methods of CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:03











  • can you give me an example of using this for one of the points

    – Tony Martini
    Nov 13 '18 at 22:05











  • Please read the documentation

    – vadian
    Nov 13 '18 at 22:05











  • Look at the Swift documentation for CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:05











  • Check this thread. And you can find some other threads on SO searching with the error message "Nil is not compatible with expected argument type 'UnsafePointer'".

    – OOPer
    Nov 13 '18 at 22:15
















0















So I needed to create a custom physics body for my sprite in my project. I was looking for an easy way to do this as I had no Idea how too. I was pointed to this site that generates a physics body based on the points you plot. When I copied it into my project and changed some of the details to fit my sprite, I was met with the following error, "Nil is not compatible with expected argument type 'UnsafePointer'".



Here is the code for the physics body shape:



var offsetX = CGFloat(player.frame.size.width * player.anchorPoint.x)
var offsetY = CGFloat(player.frame.size.height * player.anchorPoint.y)

var path = CGMutablePath()

CGPathMoveToPoint(path, nil, 77 - offsetX, 175 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 173 - offsetY)
CGPathAddLineToPoint(path, nil, 177 - offsetX, 116 - offsetY)
CGPathAddLineToPoint(path, nil, 200 - offsetX, 100 - offsetY)
CGPathAddLineToPoint(path, nil, 187 - offsetX, 92 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 28 - offsetY)
CGPathAddLineToPoint(path, nil, 77 - offsetX, 26 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 29 - offsetY)
CGPathAddLineToPoint(path, nil, 25 - offsetX, 39 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 45 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 156 - offsetY)
CGPathAddLineToPoint(path, nil, 26 - offsetX, 161 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 172 - offsetY)
CGPathAddLineToPoint(path, nil, 70 - offsetX, 174 - offsetY)


path.closeSubpath()

player.physicsBody = SKPhysicsBody(polygonFrom: path)


This error pops up for each of the CGPathAddLineToPoint() lines. I know that this is wrong, I just don't know how to write it correctly, can someone help me out on this one?










share|improve this question

























  • Don't use those Objective-C functions. Use the instance methods of CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:03











  • can you give me an example of using this for one of the points

    – Tony Martini
    Nov 13 '18 at 22:05











  • Please read the documentation

    – vadian
    Nov 13 '18 at 22:05











  • Look at the Swift documentation for CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:05











  • Check this thread. And you can find some other threads on SO searching with the error message "Nil is not compatible with expected argument type 'UnsafePointer'".

    – OOPer
    Nov 13 '18 at 22:15














0












0








0








So I needed to create a custom physics body for my sprite in my project. I was looking for an easy way to do this as I had no Idea how too. I was pointed to this site that generates a physics body based on the points you plot. When I copied it into my project and changed some of the details to fit my sprite, I was met with the following error, "Nil is not compatible with expected argument type 'UnsafePointer'".



Here is the code for the physics body shape:



var offsetX = CGFloat(player.frame.size.width * player.anchorPoint.x)
var offsetY = CGFloat(player.frame.size.height * player.anchorPoint.y)

var path = CGMutablePath()

CGPathMoveToPoint(path, nil, 77 - offsetX, 175 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 173 - offsetY)
CGPathAddLineToPoint(path, nil, 177 - offsetX, 116 - offsetY)
CGPathAddLineToPoint(path, nil, 200 - offsetX, 100 - offsetY)
CGPathAddLineToPoint(path, nil, 187 - offsetX, 92 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 28 - offsetY)
CGPathAddLineToPoint(path, nil, 77 - offsetX, 26 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 29 - offsetY)
CGPathAddLineToPoint(path, nil, 25 - offsetX, 39 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 45 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 156 - offsetY)
CGPathAddLineToPoint(path, nil, 26 - offsetX, 161 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 172 - offsetY)
CGPathAddLineToPoint(path, nil, 70 - offsetX, 174 - offsetY)


path.closeSubpath()

player.physicsBody = SKPhysicsBody(polygonFrom: path)


This error pops up for each of the CGPathAddLineToPoint() lines. I know that this is wrong, I just don't know how to write it correctly, can someone help me out on this one?










share|improve this question
















So I needed to create a custom physics body for my sprite in my project. I was looking for an easy way to do this as I had no Idea how too. I was pointed to this site that generates a physics body based on the points you plot. When I copied it into my project and changed some of the details to fit my sprite, I was met with the following error, "Nil is not compatible with expected argument type 'UnsafePointer'".



Here is the code for the physics body shape:



var offsetX = CGFloat(player.frame.size.width * player.anchorPoint.x)
var offsetY = CGFloat(player.frame.size.height * player.anchorPoint.y)

var path = CGMutablePath()

CGPathMoveToPoint(path, nil, 77 - offsetX, 175 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 173 - offsetY)
CGPathAddLineToPoint(path, nil, 177 - offsetX, 116 - offsetY)
CGPathAddLineToPoint(path, nil, 200 - offsetX, 100 - offsetY)
CGPathAddLineToPoint(path, nil, 187 - offsetX, 92 - offsetY)
CGPathAddLineToPoint(path, nil, 86 - offsetX, 28 - offsetY)
CGPathAddLineToPoint(path, nil, 77 - offsetX, 26 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 29 - offsetY)
CGPathAddLineToPoint(path, nil, 25 - offsetX, 39 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 45 - offsetY)
CGPathAddLineToPoint(path, nil, 18 - offsetX, 156 - offsetY)
CGPathAddLineToPoint(path, nil, 26 - offsetX, 161 - offsetY)
CGPathAddLineToPoint(path, nil, 62 - offsetX, 172 - offsetY)
CGPathAddLineToPoint(path, nil, 70 - offsetX, 174 - offsetY)


path.closeSubpath()

player.physicsBody = SKPhysicsBody(polygonFrom: path)


This error pops up for each of the CGPathAddLineToPoint() lines. I know that this is wrong, I just don't know how to write it correctly, can someone help me out on this one?







swift sprite-kit core-graphics skphysicsbody






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 13 '18 at 22:03









rmaddy

242k27316380




242k27316380










asked Nov 13 '18 at 21:59









Tony MartiniTony Martini

176




176













  • Don't use those Objective-C functions. Use the instance methods of CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:03











  • can you give me an example of using this for one of the points

    – Tony Martini
    Nov 13 '18 at 22:05











  • Please read the documentation

    – vadian
    Nov 13 '18 at 22:05











  • Look at the Swift documentation for CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:05











  • Check this thread. And you can find some other threads on SO searching with the error message "Nil is not compatible with expected argument type 'UnsafePointer'".

    – OOPer
    Nov 13 '18 at 22:15



















  • Don't use those Objective-C functions. Use the instance methods of CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:03











  • can you give me an example of using this for one of the points

    – Tony Martini
    Nov 13 '18 at 22:05











  • Please read the documentation

    – vadian
    Nov 13 '18 at 22:05











  • Look at the Swift documentation for CGMutablePath.

    – rmaddy
    Nov 13 '18 at 22:05











  • Check this thread. And you can find some other threads on SO searching with the error message "Nil is not compatible with expected argument type 'UnsafePointer'".

    – OOPer
    Nov 13 '18 at 22:15

















Don't use those Objective-C functions. Use the instance methods of CGMutablePath.

– rmaddy
Nov 13 '18 at 22:03





Don't use those Objective-C functions. Use the instance methods of CGMutablePath.

– rmaddy
Nov 13 '18 at 22:03













can you give me an example of using this for one of the points

– Tony Martini
Nov 13 '18 at 22:05





can you give me an example of using this for one of the points

– Tony Martini
Nov 13 '18 at 22:05













Please read the documentation

– vadian
Nov 13 '18 at 22:05





Please read the documentation

– vadian
Nov 13 '18 at 22:05













Look at the Swift documentation for CGMutablePath.

– rmaddy
Nov 13 '18 at 22:05





Look at the Swift documentation for CGMutablePath.

– rmaddy
Nov 13 '18 at 22:05













Check this thread. And you can find some other threads on SO searching with the error message "Nil is not compatible with expected argument type 'UnsafePointer'".

– OOPer
Nov 13 '18 at 22:15





Check this thread. And you can find some other threads on SO searching with the error message "Nil is not compatible with expected argument type 'UnsafePointer'".

– OOPer
Nov 13 '18 at 22:15












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