Please help me, I've been trying to solve this problem for 24 hours and I'm going crazy:) I am trying to detect collision in Sprite Kit through the didBeginContact delegate method, but this method is not fired, I've tried all the answers on the Internet
#import "MyScene.h"
#import "GameOverScene.h"
static const uint32_t basketCategory = 1 << 0;
static const uint32_t ballCategory = 1 << 1;
// 1
@interface MyScene () <SKPhysicsContactDelegate>
//@interface MyScene ()
@property BOOL contentCreated;
@property (nonatomic) SKSpriteNode * basket;
@property (nonatomic) SKSpriteNode * ball;
@property (nonatomic) NSTimeInterval lastSpawnTimeInterval;
@property (nonatomic) NSTimeInterval lastUpdateTimeInterval;
@property (nonatomic) int ballDestroyed;
@property (nonatomic) int score;
@end
static inline CGPoint rwAdd(CGPoint a, CGPoint b) {
return CGPointMake(a.x + b.x, a.y + b.y);
}
static inline CGPoint rwSub(CGPoint a, CGPoint b) {
return CGPointMake(a.x - b.x, a.y - b.y);
}
static inline CGPoint rwMult(CGPoint a, float b) {
return CGPointMake(a.x * b, a.y * b);
}
static inline float rwLength(CGPoint a) {
return sqrtf(a.x * a.x + a.y * a.y);
}
// Makes a vector have a length of 1
static inline CGPoint rwNormalize(CGPoint a) {
float length = rwLength(a);
return CGPointMake(a.x / length, a.y / length);
}
@implementation MyScene
float balltime;
-(id)initWithSize:(CGSize)size {
if (self = [super initWithSize:size]) {
/* Setup your scene here */
}
return self;
}
- (void)didMoveToView:(SKView *)view
{
if (!self.contentCreated) {
self.backgroundColor = [SKColor colorWithRed:0.15 green:0.15 blue:0.3 alpha:1.0];
self.physicsWorld.gravity = CGVectorMake(0,0);
self.physicsWorld.contactDelegate = self;
self.basket = [SKSpriteNode spriteNodeWithImageNamed:@"basket"];
self.basket.size = CGSizeMake(100, 100);
self.basket.position = CGPointMake(self.frame.size.width/2, self.basket.size.height/2);
self.basket.physicsBody.dynamic = YES; // 2
self.basket.physicsBody.categoryBitMask = basketCategory; // 3
self.basket.physicsBody.contactTestBitMask = ballCategory; // 4
self.basket.physicsBody.collisionBitMask = 0; // 5
self.basket.physicsBody.usesPreciseCollisionDetection = YES;
[self addChild:self.basket];
// self.physicsWorld.contactDelegate = self;
}
}
- (void)addball {
balltime=1;
// Create sprite
self.ball = [SKSpriteNode spriteNodeWithImageNamed:@"basketball"];
self.ball.size = CGSizeMake(100, 100);
self.ball.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:self.ball.size]; // 1
self.ball.physicsBody.dynamic = YES; // 2
self.ball.physicsBody.categoryBitMask = ballCategory; // 3
self.ball.physicsBody.contactTestBitMask = basketCategory; // 4
self.ball.physicsBody.collisionBitMask = 0; // 5
self.ball.physicsBody.usesPreciseCollisionDetection = YES;
// self.physicsWorld.contactDelegate = self;
// Determine where to spawn the ball along the x axis
int minX = self.ball.size.width / 2;
int maxX = self.frame.size.width - self.ball.size.width / 2;
int rangeX = maxX - minX;
int actualX = (arc4random() % rangeX) + minX;
// Create the monster slightly off-screen along the right edge,
// and along a random position along the X axis as calculated above
// ball.position = CGPointMake(actualX,self.frame.size.height + ball.size.height/2);
self.ball.position = CGPointMake(actualX,self.frame.size.height + 300);
[self addChild:self.ball];
// Determine speed of the ball
int minDuration = 3.99;
int maxDuration = 4.0;
int rangeDuration = maxDuration - minDuration;
int actualDuration = (arc4random() % rangeDuration) + minDuration;
// Create the actions
SKAction * actionMove = [SKAction moveTo:CGPointMake(actualX,-self.ball.size.height/2) duration:actualDuration];
SKAction * actionMoveDone = [SKAction removeFromParent];
SKAction * loseAction = [SKAction runBlock:^{
SKTransition *reveal = [SKTransition flipHorizontalWithDuration:0.5];
SKScene * gameOverScene = [[GameOverScene alloc] initWithSize:self.size won:NO];
[self.view presentScene:gameOverScene transition: reveal];
}];
[self.ball runAction:[SKAction sequence:@[actionMove, actionMoveDone]]];
}
- (void)updateWithTimeSinceLastUpdate:(CFTimeInterval)timeSinceLast {
self.lastSpawnTimeInterval += timeSinceLast;
if (self.lastSpawnTimeInterval > balltime) {
self.lastSpawnTimeInterval = 0;
[self addball];
}
}
- (void)update:(NSTimeInterval)currentTime {
// Handle time delta.
// If we drop below 60fps, we still want everything to move the same distance.
CFTimeInterval timeSinceLast = currentTime - self.lastUpdateTimeInterval;
self.lastUpdateTimeInterval = currentTime;
if (timeSinceLast > 1) { // more than a second since last update
timeSinceLast = 1.0 / 60.0;
self.lastUpdateTimeInterval = currentTime;
}
[self updateWithTimeSinceLastUpdate:timeSinceLast];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint positionInScene = [touch locationInNode:self];
self.basket.position=positionInScene;
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint positionInScene = [touch locationInNode:self];
self.basket.position=positionInScene;
}
- (void)ball:(SKSpriteNode *)ball didCollideWithbasket:(SKSpriteNode *)basket {
NSLog(@"Hit");
[self.ball removeFromParent];
self.ballDestroyed++;
if (self.ballDestroyed > 20) {
SKTransition *reveal = [SKTransition flipHorizontalWithDuration:0.5];
SKScene * gameOverScene = [[GameOverScene alloc] initWithSize:self.size won:YES];
[self.view presentScene:gameOverScene transition: reveal];
}
}
- (void)didBeginContact:(SKPhysicsContact *)contact
{
NSLog(@"contact");
// 1
SKPhysicsBody *firstBody, *secondBody;
if (contact.bodyA.categoryBitMask < contact.bodyB.categoryBitMask)
{
firstBody = contact.bodyA;
secondBody = contact.bodyB;
}
else
{
firstBody = contact.bodyB;
secondBody = contact.bodyA;
}
// 2
if ((firstBody.categoryBitMask & basketCategory) != 0 &&
(secondBody.categoryBitMask & ballCategory) != 0)
{
[self ball:(SKSpriteNode *) firstBody.node didCollideWithbasket:(SKSpriteNode *) secondBody.node];
}
}
