ios - How do I detect the collision of two SKShapeNodes in Swift without affecting their physics? -


log: here

please excuse me if stupid, horrid question, have been stuck on , can't find answers anywhere. have few nodes: leftmaze, rightmaze, , player. trying detect when player collides of other 2 nodes.

keep in mind physics want apply 2 maze nodes gravity. other that, want them pass through player. also, feel free give me constructive criticism on code new , want better! thank much!

override func didmove(to view: skview) {      backgroundcolor = skcolor.white      // player config //      player.xscale = 0.25     player.yscale = 0.25     player.position = cgpoint(x:0,y:0 - (self.frame.height/4))     player.physicsbody = skphysicsbody(circleofradius: max(player.size.width / 2,                                                            player.size.height / 2))     player.physicsbody!.affectedbygravity = false     player.physicsbody!.collisionbitmask = 0     // spawning game objects //      addchild(player)      // debug //      print(size.width, " / " ,size.height)     print(cgpoint(x: size.width * 0.5 ,y: size.height * 0.1))      timer = timer.scheduledtimer(timeinterval: 5, target: self, selector: #selector(createmaze),userinfo:nil, repeats: true)  }  func didbegin(_ contact: skphysicscontact) {     if contact.bodya.node == player && contact.bodyb.node == leftmaze{         print("left collision!")     } }  func createmaze(){       /*-------- right maze init --------*/      // how big right part of maze     let randomnumber = arc4random_uniform(uint32(self.frame.width * 0.66))     // how far place right part of maze right part of screen     let distanceright = self.frame.maxx-cgfloat(randomnumber)     // definition of right maze     rightmaze.path = uibezierpath(roundedrect: cgrect(x: 0, y: 0, width: int(randomnumber), height: mazeheight), cornerradius: 0).cgpath     rightmaze.position = cgpoint(x: cgfloat(distanceright), y: frame.maxy)     rightmaze.fillcolor = uicolor.black      //adding physics body , gravity     rightmaze.physicsbody = skphysicsbody(rectangleof: cgsize(width: int(randomnumber), height: mazeheight))     rightmaze.physicsbody!.affectedbygravity = true     rightmaze.physicsbody!.collisionbitmask = 0     /*-------- end of right maze init --------*/      /*-------- left maze init --------*/      // place left part of maze     let distanceleft = self.frame.minx     // definition of left maze     leftmaze.path = uibezierpath(roundedrect: cgrect(x: 0, y: 0, width: int(self.frame.width-cgfloat(randomnumber)-(player.size.width+20)), height: mazeheight), cornerradius: 0).cgpath     leftmaze.position = cgpoint(x: cgfloat(distanceleft), y: frame.maxy)     leftmaze.fillcolor = uicolor.black      //adding physics body , gravity     leftmaze.physicsbody = skphysicsbody(rectangleof: cgsize(width: int(self.frame.width-cgfloat(randomnumber)-(player.size.width+20)), height: mazeheight))     leftmaze.physicsbody!.affectedbygravity = true     leftmaze.physicsbody!.collisionbitmask = 0     /*-------- end of left maze init --------*/      addchild(rightmaze)     addchild(leftmaze)

you have no contacttestbitmask on sprites, didbegin never called.


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