如何使用SKPhysicsJointFixed连接两个SKSpriteNodes

Question

当我尝试用SKPhysicsJointFixed连接两个SKSpriteNodes时，它们分开了，好像根本没有连接。我做的似乎都不管用。这是我的代码…

CGPoint position = CGPointMake(100, 100);
CGSize size = CGSizeMake(4, 64);
SKSpriteNode *node1 = [SKSpriteNode spriteNodeWithColor:[SKColor whiteColor] size:size];
node1.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:size];
node1.position = position;
SKSpriteNode *node2 = [SKSpriteNode spriteNodeWithColor:[SKColor whiteColor] size:size];
node2.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:size];
node2.position = position;
[scene addChild:node1];
[scene addChild:node2];
SKPhysicsJointFixed *joint = [SKPhysicsJointFixed jointWithBodyA:node1.physicsBody
                                                            bodyB:node2.physicsBody
                                                          anchor:CGPointMake(100, 100)];
[scene.physicsWorld addJoint:joint];

Answer 1

这是我的工作代码....

CGPoint position = CGPointMake(100, 350);
CGPoint position2 = CGPointMake(100, 420);
CGSize size = CGSizeMake(4, 164);
SKSpriteNode *node1 = [SKSpriteNode spriteNodeWithColor:[SKColor whiteColor] size:size];
node1.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:size];
node1.position = position;
SKSpriteNode *node2 = [SKSpriteNode spriteNodeWithColor:[SKColor redColor] size:size];
node2.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:size];
node2.position = position2;
[scene addChild:node1];
[scene addChild:node2];
SKPhysicsJointFixed *joint = [SKPhysicsJointFixed jointWithBodyA:node1.physicsBody
                                                                   bodyB:node2.physicsBody
                                                                  anchor:CGPointMake(node1.position.x, node1.position.y-30)];
[scene.physicsWorld addJoint:joint];