バリボーロボット

バレーボールをレシーブするロボットといった感じでiPhoneアプリのサンプルコードを描いてみます。

@import SpriteKit;

#import “ViewController.h”

@interface RoboScene : SKScene

@property (nonatomic) NSInteger move;

@property (nonatomic) BOOL handsup;

@end

@implementation RoboScene

– (void)didMoveToView:(SKView *)view

{

    self.backgroundColor = [SKColor colorWithRed:0.7 green:0.7 blue:1.0 alpha:1];

    self.physicsBody = [SKPhysicsBody bodyWithEdgeLoopFromRect:self.frame];

    self.physicsWorld.speed = 0.5;

    [self createReceiverRobo];

    [self playGame];

}

– (void)createReceiverRobo

{

    SKNode *robo = [SKNode node];

    robo.name = @”robo”;

    robo.position = CGPointMake(CGRectGetMaxX(self.frame) * 0.75, 80);

    [self addChild:robo];

    

    UIBezierPath *circle = [UIBezierPath bezierPathWithArcCenter:CGPointZero radius:30 startAngle:0 endAngle:2.0*M_PI clockwise:NO];

    

    SKShapeNode *head = [SKShapeNode node];

    head.path = circle.CGPath;

    head.fillColor = [SKColor brownColor];

    head.lineWidth = 0;

    head.position = CGPointMake(0, 50);

    [robo addChild:head];

    

    SKSpriteNode *body = [SKSpriteNode spriteNodeWithColor:[SKColor brownColor] size:CGSizeMake(40, 50)];

    [robo addChild:body];

    

    SKSpriteNode *bar = [SKSpriteNode spriteNodeWithColor:[SKColor brownColor] size:CGSizeMake(10, 30)];

    bar.position = CGPointMake(0, –40);

    [robo addChild:bar];

    

    UIBezierPath *circleTire = [UIBezierPath bezierPathWithArcCenter:CGPointZero radius:15 startAngle:0 endAngle:2.0*M_PI clockwise:NO];

    SKShapeNode *tire = [SKShapeNode node];

    tire.name = @”tire”;

    tire.path = circleTire.CGPath;

    tire.position = CGPointMake(robo.position.x, robo.position.y–50);

    tire.lineWidth = 10;

    tire.strokeColor = [SKColor blackColor];

    tire.fillColor = [SKColor lightGrayColor];

    [self addChild:tire];

    

    SKSpriteNode *hand = [SKSpriteNode spriteNodeWithColor:[SKColor blackColor] size:CGSizeMake(20, 50)];

    hand.name = @”hand”;

    hand.position = robo.position;

    [self addChild:hand];

    hand.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:hand.size];

    

    SKAction *flash = [SKAction repeatActionForever:[SKAction sequence:@[[SKAction fadeOutWithDuration:0.5], [SKAction fadeInWithDuration:1.0]]]];

    

    SKLabelNode *right = [SKLabelNode node];

    right.name = @”right”;

    right.text = @”<“;

    right.fontSize = 60;

    right.position = CGPointMake(-70, 0);

    [robo addChild:right];

    [right runAction:flash];

    

    SKLabelNode *left = [SKLabelNode node];

    left.name = @”left”;

    left.text = @”>”;

    left.fontSize = 60;

    left.position = CGPointMake(70, 0);

    [robo addChild:left];

    [left runAction:flash];

    

    robo.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:CGSizeMake(40, 80)];

    robo.physicsBody.allowsRotation = NO;

    robo.physicsBody.friction = 0;

    

    tire.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:15];

    tire.physicsBody.friction = 0;

    

    SKPhysicsJointPin *pinT = [SKPhysicsJointPin jointWithBodyA:robo.physicsBody bodyB:tire.physicsBody anchor:tire.position];

    [self.physicsWorld addJoint:pinT];

    

    SKPhysicsJointPin *pinH = [SKPhysicsJointPin jointWithBodyA:robo.physicsBody bodyB:hand.physicsBody anchor:CGPointMake(hand.position.x, hand.position.y + 30)];

    pinH.shouldEnableLimits = YES;

    pinH.lowerAngleLimit = –M_PI * 0.5;

    pinH.upperAngleLimit = M_PI * 0.1;

    [self.physicsWorld addJoint:pinH];

    

}

– (void)playGame

{

    [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(createBall) userInfo:nil repeats:YES];

}

– (void)createBall

{

    UIBezierPath *path = [UIBezierPath bezierPathWithArcCenter:CGPointZero radius:15 startAngle:0 endAngle:2.0*M_PI clockwise:YES];

    SKShapeNode *ball = [SKShapeNode node];

    ball.path = path.CGPath;

    ball.fillColor = [SKColor whiteColor];

    ball.position = CGPointMake(50, 160);

    [self addChild:ball];

    

    ball.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:15];

    ball.physicsBody.restitution = 0.8;

    ball.physicsBody.density = 0.1;

    [ball.physicsBody applyImpulse:CGVectorMake(1, 1)];

    [ball runAction:[SKAction sequence:@[[SKAction waitForDuration:5.0], [SKAction runBlock:^{

        [ball removeFromParent];

    }]]]];

}

– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

    CGPoint p = [[touches anyObject] locationInNode:self];

    SKNode *n = [self nodeAtPoint:p];

    if ([n isKindOfClass:[SKLabelNode class]]) {

        if ([((SKLabelNode *)n).text isEqual:@”<“]) {

            self.move = –1;

        } else if ([((SKLabelNode *)n).text isEqual:@”>”]) {

            self.move = 1;

        }

    } else if ([n.name isEqual:@”tire”]) {

        self.handsup = YES;

    }

}

– (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event

{

    self.move = 0;

    self.handsup = NO;

}

– (void)update:(NSTimeInterval)currentTime

{

    SKNode *robo = [self childNodeWithName:@”robo”];

    robo.physicsBody.velocity = CGVectorMake(self.move * 200, 0);

    

    SKNode *hand = [self childNodeWithName:@”hand”];

    if (self.handsup) {

        [hand.physicsBody applyForce:CGVectorMake(-100, 0)];

    }

}

@end

@interface ViewController ()

@end

@implementation ViewController

– (void)viewDidAppear:(BOOL)animated

{

    [super viewDidAppear:animated];

    SKView *spriteView = [[SKView alloc] initWithFrame:self.view.bounds];

    [self.view addSubview:spriteView];

    SKScene *scene = [[RoboScene alloc] initWithSize:spriteView.frame.size];

    [spriteView presentScene:scene];

}

@end