I have made a node with three custom physics bodies, the problem however is that there is for each physics body an extra line.
I it possible to remove these lines? The lines that I would like to remove are circled with red.
I have made the physics bodies with this editor.
With the paths I have created this code (swift & sprite kit):
//Wheel
let wheel = SKSpriteNode(imageNamed: "wheel")
let scaleWheel = frame.width / wheel.frame.width * 0.8
wheel.name = "wheel"
wheel.position = view.center
//Scale constants
let sprite = SKSpriteNode()
sprite.position = CGPointMake(CGRectGetMidX(frame), CGRectGetMidY(frame))
let offsetX: CGFloat = sprite.frame.size.width * sprite.anchorPoint.x
let offsetY: CGFloat = sprite.frame.size.height * sprite.anchorPoint.y
//path
let path: CGMutablePathRef = CGPathCreateMutable()
CGPathMoveToPoint(path, nil, -172 - offsetX, 143 - offsetY)
CGPathAddLineToPoint(path, nil, -151 - offsetX, 122 - offsetY)
CGPathAddLineToPoint(path, nil, -167 - offsetX, 100 - offsetY)
CGPathAddLineToPoint(path, nil, -178 - offsetX, 81 - offsetY)
CGPathAddLineToPoint(path, nil, -186 - offsetX, 60 - offsetY)
CGPathAddLineToPoint(path, nil, -191 - offsetX, 38 - offsetY)
CGPathAddLineToPoint(path, nil, -193 - offsetX, 16 - offsetY)
CGPathAddLineToPoint(path, nil, -193 - offsetX, -7 - offsetY)
CGPathAddLineToPoint(path, nil, -193 - offsetX, -25 - offsetY)
CGPathAddLineToPoint(path, nil, -188 - offsetX, -47 - offsetY)
CGPathAddLineToPoint(path, nil, -182 - offsetX, -69 - offsetY)
CGPathAddLineToPoint(path, nil, -173 - offsetX, -88 - offsetY)
CGPathAddLineToPoint(path, nil, -164 - offsetX, -105 - offsetY)
CGPathAddLineToPoint(path, nil, -151 - offsetX, -124 - offsetY)
CGPathAddLineToPoint(path, nil, -134 - offsetX, -143 - offsetY)
CGPathAddLineToPoint(path, nil, -150 - offsetX, -168 - offsetY)
CGPathAddLineToPoint(path, nil, -170 - offsetX, -147 - offsetY)
CGPathAddLineToPoint(path, nil, -190 - offsetX, -121 - offsetY)
CGPathAddLineToPoint(path, nil, -207 - offsetX, -89 - offsetY)
CGPathAddLineToPoint(path, nil, -218 - offsetX, -58 - offsetY)
CGPathAddLineToPoint(path, nil, -224 - offsetX, -23 - offsetY)
CGPathAddLineToPoint(path, nil, -224 - offsetX, 25 - offsetY)
CGPathAddLineToPoint(path, nil, -216 - offsetX, 62 - offsetY)
CGPathAddLineToPoint(path, nil, -208 - offsetX, 85 - offsetY)
CGPathAddLineToPoint(path, nil, -192 - offsetX, 116 - offsetY)
CGPathCloseSubpath(path)
//pathTwo
let pathTwo: CGMutablePathRef = CGPathCreateMutable()
CGPathMoveToPoint(pathTwo, nil, -93 - offsetX, 170 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -117 - offsetX, 193 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -93 - offsetX, 205 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -66 - offsetX, 215 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -43 - offsetX, 221 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -21 - offsetX, 224 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -2 - offsetX, 226 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 22 - offsetX, 226 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 46 - offsetX, 221 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 63 - offsetX, 216 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 85 - offsetX, 209 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 111 - offsetX, 197 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 137 - offsetX, 179 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 160 - offsetX, 160 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 181 - offsetX, 135 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 200 - offsetX, 106 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 214 - offsetX, 74 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 223 - offsetX, 37 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 192 - offsetX, 37 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 186 - offsetX, 65 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 170 - offsetX, 99 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 139 - offsetX, 137 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 95 - offsetX, 169 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, 46 - offsetX, 191 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -4 - offsetX, 195 - offsetY)
CGPathAddLineToPoint(pathTwo, nil, -61 - offsetX, 183 - offsetY)
CGPathCloseSubpath(pathTwo)
//pathThree
let pathThree: CGMutablePathRef = CGPathCreateMutable()
CGPathMoveToPoint(pathThree, nil, 192,-38 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 223,-38 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 219,-61 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 209,-91 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 196,-116 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 176,-145 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 149,-172 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 111,-198 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 79,-213 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 46,-222 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 15,-227 - offsetY)
CGPathAddLineToPoint(pathThree, nil, -19,-226 - offsetY)
CGPathAddLineToPoint(pathThree, nil, -49,-222 - offsetY)
CGPathAddLineToPoint(pathThree, nil, -71,-216 - offsetY)
CGPathAddLineToPoint(pathThree, nil, -87,-209 - offsetY)
CGPathAddLineToPoint(pathThree, nil, -72,-183 - offsetY)
CGPathAddLineToPoint(pathThree, nil, -39,-194 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 5,-197 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 52,-189 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 99,-170 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 141,-136 - offsetY)
CGPathAddLineToPoint(pathThree, nil, 176,-87 - offsetY)
CGPathCloseSubpath(pathThree)
//Physics bodies
let bodyOne = SKPhysicsBody(polygonFromPath: path)
let bodyTwo = SKPhysicsBody(polygonFromPath: pathTwo)
let bodyThree = SKPhysicsBody(polygonFromPath: pathThree)
wheel.physicsBody = SKPhysicsBody(bodies: [bodyOne, bodyTwo, bodyThree])
wheel.physicsBody!.angularDamping = 5
wheel.physicsBody?.pinned = true
wheel.physicsBody?.affectedByGravity = false
wheel.physicsBody?.restitution = 1
wheel.setScale(scaleWheel)
addChild(wheel)
Found it! I did some extra research and this post came up.
The solution:
Use
bodyWithEdgeLoopFromPath:orbodyWithEdgeChainFromPath:to be able to create concave collision shapes. These bodies will not be dynamic and won't be able to move by themselves but they are the perfect solution for arbitrary collision shapes with a static playfield.
