フェンシング

フェンシングっぽいiPhoneアプリのサンプルコードを描いてみます。

#import “ViewController.h”

#import <SpriteKit/SpriteKit.h>

@interface FencingScene : SKScene

@end

@implementation FencingScene

– (void)didMoveToView:(SKView *)view

{

    self.backgroundColor = [SKColor colorWithRed:0.8 green:1.0 blue:0.8 alpha:1.0];

    [self createPlayer];

    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(createFallBrick) userInfo:nil repeats:YES];

}

– (void)createPlayer

{

    UIBezierPath *headPath = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(-20, –20, 40, 40)];

    SKShapeNode *head = [SKShapeNode node];

    head.path = headPath.CGPath;

    head.fillColor = [SKColor darkGrayColor];

    head.lineWidth = 0;

    head.position = CGPointMake(60, 180);

    [self addChild:head];

    

    SKSpriteNode *body = [SKSpriteNode spriteNodeWithColor:[SKColor darkGrayColor] size:CGSizeMake(35, 55)];

    body.position = CGPointMake(60, 130);

    [self addChild:body];

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

    body.physicsBody.dynamic = NO;

    body.physicsBody.categoryBitMask = 0x1;

    

    SKSpriteNode *lHand = [SKSpriteNode spriteNodeWithColor:[SKColor darkGrayColor] size:CGSizeMake(40, 15)];

    lHand.position = CGPointMake(30, 150);

    [self addChild:lHand];

    

    SKSpriteNode *lFoot = [SKSpriteNode spriteNodeWithColor:[SKColor darkGrayColor] size:CGSizeMake(50, 15)];

    lFoot.position = CGPointMake(30, 90);

    lFoot.zRotation = M_PI_4;

    [self addChild:lFoot];

    

    SKSpriteNode *rFootU = [SKSpriteNode spriteNodeWithColor:[SKColor darkGrayColor] size:CGSizeMake(30, 15)];

    rFootU.position = CGPointMake(90, 110);

    [self addChild:rFootU];

    

    SKSpriteNode *rFootB = [SKSpriteNode spriteNodeWithColor:[SKColor darkGrayColor] size:CGSizeMake(15, 40)];

    rFootB.position = CGPointMake(100, 95);

    [self addChild:rFootB];

    

    

    SKSpriteNode *rHandA = [SKSpriteNode spriteNodeWithColor:[SKColor redColor] size:CGSizeMake(30, 15)];

    rHandA.position = CGPointMake(90, 150);

    [self addChild:rHandA];

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

    rHandA.physicsBody.collisionBitMask = 0x3;

    

    SKSpriteNode *rHandB = [SKSpriteNode spriteNodeWithColor:[SKColor blueColor] size:CGSizeMake(30, 15)];

    rHandB.zPosition = 1;

    rHandB.position = CGPointMake(120, 150);

    [self addChild:rHandB];

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

    rHandB.physicsBody.collisionBitMask = 0x3;

    

    SKSpriteNode *bar = [SKSpriteNode spriteNodeWithColor:[SKColor blackColor] size:CGSizeMake(80, 5)];

    bar.name = @”bar”;

    bar.position = CGPointMake(160, 150);

    [self addChild:bar];

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

    bar.physicsBody.collisionBitMask = 0x3;

    

    SKPhysicsJointPin *pinA = [SKPhysicsJointPin jointWithBodyA:body.physicsBody bodyB:rHandA.physicsBody anchor:CGPointMake(80, 150)];

    [self.physicsWorld addJoint:pinA];

    

    SKPhysicsJointPin *pinB = [SKPhysicsJointPin jointWithBodyA:rHandA.physicsBody bodyB:rHandB.physicsBody anchor:CGPointMake(110, 150)];

    [self.physicsWorld addJoint:pinB];

    

    SKPhysicsJointPin *pinC = [SKPhysicsJointPin jointWithBodyA:rHandB.physicsBody bodyB:bar.physicsBody anchor:CGPointMake(135, 150)];

    [self.physicsWorld addJoint:pinC];

    

    SKPhysicsJointSliding *sliding = [SKPhysicsJointSliding jointWithBodyA:body.physicsBody bodyB:bar.physicsBody anchor:CGPointMake(140, 150) axis:CGVectorMake(1, 0)];

    [self.physicsWorld addJoint:sliding];

}

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

{

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

    [bar.physicsBody applyImpulse:CGVectorMake(6, 0)];

}

– (void)createFallBrick

{

    float hue = (arc4random() % 8) * 0.1;

    SKSpriteNode *brick = [SKSpriteNode spriteNodeWithColor:[SKColor colorWithHue:hue saturation:0.9 brightness:0.8 alpha:1.0] size:CGSizeMake(20, 20)];

    brick.name = @”brick”;

    brick.zRotation = M_PI_4;

    brick.position = CGPointMake(hue * 10 + 190, CGRectGetMaxY(self.frame));

    [self addChild:brick];

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

}

– (void)update:(NSTimeInterval)currentTime

{

    [self enumerateChildNodesWithName:@”brick” usingBlock:^(SKNode *node, BOOL *stop) {

        node.physicsBody.velocity = CGVectorMake(node.physicsBody.velocity.dx, MAX(-30, node.physicsBody.velocity.dy));

    }];

}

@end

@interface ViewController ()

@end

@implementation ViewController

– (void)viewDidLoad

{

    [super viewDidLoad];

    

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

    [self.view addSubview:spriteView];

    

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

    [spriteView presentScene:scene];

}

@end