ios - Obstacles With GameplayKit -

here question:

• how can convert skspritenodearray array of gkobstacles agent can appropriately avoid these obstacles using goaltoavoidobstacles:(nonnull nsarray<gkobstacle *> *) maxpredictiontime:(nstimeinterval)/?

it seems way in creating gkobstacle array not allowing gkgoal identify these obstacles correctly, no matter weight give goal.

i have several sknodes added skscene chapterscene. each of these nodes added array storing called obstaclesarray. have set test in following way works quite well:

working obstacles

- (void)didmovetoview:(nonnull skview *)view {     [super didmovetoview:view];      // add 3 obstacles in triangle formation around center of scene.     nsarray<gkobstacle *> *obstacles = @[                                          [self addobstacleatpoint:cgpointmake(cgrectgetmidx(self.frame),                                                                               cgrectgetmidy(self.frame) + 150)],                                          [self addobstacleatpoint:cgpointmake(cgrectgetmidx(self.frame) - 200,                                                                               cgrectgetmidy(self.frame) - 150)],                                          [self addobstacleatpoint:cgpointmake(cgrectgetmidx(self.frame) + 200,                                                                               cgrectgetmidy(self.frame) - 150)],                                          ];      // player agent follows tracking agent.     self.player = [[oplayer alloc] initwithscene:self                                                 radius:50                                               position:cgpointmake(cgrectgetmidx(self.frame),                                                                    cgrectgetmidy(self.frame))];     self.player.agent.behavior = [[gkbehavior alloc] init];     [self.agentsystem addcomponent:self.player.agent];      // create seek goal, add behavior in -setseeking:.     self.seekgoal = [gkgoal goaltoseekagent:self.character];      // add avoid-obstacles goal high weight keep agent overlapping obstacles.     [self.player.agent.behavior setweight:100 forgoal:[gkgoal goaltoavoidobstacles:obstacles maxpredictiontime:1]];  }  - (gkobstacle *)addobstacleatpoint:(cgpoint)point {     skshapenode *circleshape = [skshapenode shapenodewithcircleofradius:50];     circleshape.linewidth = 2.5;     circleshape.fillcolor = [skcolor graycolor];     circleshape.strokecolor = [skcolor redcolor];     circleshape.zposition = 1;     circleshape.position = point;     [self addchild:circleshape];      gkcircleobstacle *obstacle = [gkcircleobstacle obstaclewithradius:50];     obstacle.position = (vector_float2){point.x, point.y};      return obstacle; } 

while works fine, issue having can not behavior identify sknode bodies array have obstacles. can these manually created gkcircleobstacle items register valid obstacles agent avoids. reason issue because relying on many obstacles not in fact simple circles, polygon structures complex, more straightforward. nevertheless, attempting following agent did not seem avoid of obstacles of sknode way:

not working obstacles

nsarray *obstacles = [sknode obstaclesfromnodephysicsbodies:obstaclesarray];  /*  other code seen above  */  // add avoid-obstacles goal high weight keep agent overlapping obstacles. [self.player.agent.behavior setweight:100 forgoal:[gkgoal goaltoavoidobstacles:obstacles maxpredictiontime:1]]; 

unfortunately, not seem work no matter how high set weight to, agent never responds avoiding obstacles. here log of array passing it:

2016-07-24 22:32:24.907 <game>[1516:475581] obstacles: (     "<gkpolygonobstacle: 0x14d20d70>",     "<gkpolygonobstacle: 0x14d20e10>",     "<gkpolygonobstacle: 0x14d20ba0>",     "<gkpolygonobstacle: 0x14d20bb0>",     "<gkpolygonobstacle: 0x14d20bc0>",     "<gkpolygonobstacle: 0x14d20a60>",     "<gkpolygonobstacle: 0x14d208b0>",     "<gkpolygonobstacle: 0x14d207d0>",     "<gkpolygonobstacle: 0x14d20a70>" ) 

each of have been , appropriately initialized , added scene. each of these elements in fact responsive spritekit didbegincontact:(skphysicscontact *)contact method, seems nodes handing boundaries should having.

if knows doing wrong or better way turn each of these 'obstacle nodes' gkobstacle's appreciative. in advance!

update: here node physics body testing:

        skspritenode *innermap1 = [skspritenode spritenodewithimagenamed:@"test"];         innermap1.physicsbody = [skphysicsbody bodywithtexture:[sktexture texturewithimagenamed:@"test"] size:cgsizemake(innermap1.frame.size.width*0.92, innermap1.frame.size.height*0.92)];         innermap1.position = cgpointmake(-220, -140);         innermap1.physicsbody.dynamic = no;          [chapterskspritenodes addobject:innermap1]; 

here body looks skview.showsphysics = yes;:

so know physics body need be. when attempt create gkobstacle body however, not seem register obstacle when being assigned in avoidobstacles goal.

this sounds bug. should check return array obstaclesfromnodephysicsbodies , make sure getting obstacles expect. suspect not.

you can check relevant vertices on obstacles such:

https://developer.apple.com/library/ios/documentation/gameplaykit/reference/gkpolygonobstacle_class/index.html#//apple_ref/occ/cl/gkpolygonobstacle

make sure expect.