今回は、wii U買った記念（子供がこんなに喜ぶなんて、マリオってすごい。）です。大好きなマリオみたいなゲーム作れるか、チャレンジ。まずは、はじめの一歩、ジャンプでハタをとると点数を加算するような感じでiPhoneのサンプルコードを描いてみます。
今回使った画像はこれ
サンプルを動かしてみた動画
サンプルコード
#import “ViewController.h”
#import <SpriteKit/SpriteKit.h>
typedef enum int8_t {
Ready = 1,
Runnning = 2,
Jump = 3,
} GameState;
@interface RunScene : SKScene <SKPhysicsContactDelegate>
@property BOOL contentCreated;
@property int gameState;
@end
@implementation RunScene
– (void)didMoveToView:(SKView *)view
{
if (!self.contentCreated) {
[self createSceneContents];
self.contentCreated = YES;
self.physicsWorld.contactDelegate = self;
}
}
– (void)createSceneContents
{
self.gameState = Ready;
self.backgroundColor = [UIColor colorWithRed:0.6 green:0.8 blue:1.0 alpha:1.0];
[self createRoad];
[self createRunner];
[self createFlag];
[self createScore];
}
– (void)createRoad
{
SKSpriteNode *road = [SKSpriteNode spriteNodeWithColor:[SKColor brownColor] size:CGSizeMake(CGRectGetMaxX(self.frame), 10)];
road.position = CGPointMake(CGRectGetMidX(self.frame), 5);
[self addChild:road];
road.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:road.size];
road.physicsBody.dynamic = NO;
road.physicsBody.categoryBitMask = 0x1 << 1;
}
– (void)createRunner
{
SKSpriteNode *runner = [SKSpriteNode spriteNodeWithImageNamed:@”runner_run02″];
runner.name = @”runner”;
runner.position = CGPointMake(CGRectGetMidX(self.frame), runner.size.height * 0.5 + 10);
[self addChild:runner];
runner.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:runner.size];
runner.physicsBody.allowsRotation = NO;
runner.physicsBody.categoryBitMask = 0x1 << 2;
runner.physicsBody.collisionBitMask = 0x1 << 1;
}
– (void)createFlag
{
float x = arc4random() % (int)(self.frame.size.width * 0.7) + self.frame.size.width * 0.15;
float y = arc4random() % 50 + CGRectGetMidY(self.frame);
SKSpriteNode *flag = [SKSpriteNode spriteNodeWithImageNamed:@”flag”];
flag.position = CGPointMake(x, y);
[self addChild:flag];
flag.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:flag.size];
flag.physicsBody.dynamic = NO;
flag.physicsBody.categoryBitMask = 0x1 << 3;
flag.physicsBody.contactTestBitMask = 0x1 << 2;
}
– (void)createScore
{
SKLabelNode *score = [SKLabelNode node];
score.name = @”score”;
score.text = @”0000″;
score.position = CGPointMake(50, CGRectGetMaxY(self.frame) – 50);
[self addChild:score];
}
– (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
SKSpriteNode *runner = (SKSpriteNode*)[self childNodeWithName:@”runner”];
if (self.gameState == Ready) {
self.gameState = Runnning;
SKTexture *runA = [SKTexture textureWithImageNamed:@”runner_run03″];
SKTexture *runB = [SKTexture textureWithImageNamed:@”runner_run01″];
SKTexture *runC = [SKTexture textureWithImageNamed:@”runner_run02″];
SKAction *running = [SKAction animateWithTextures:@[runA, runB, runC] timePerFrame:0.2];
[runner runAction:[SKAction repeatActionForever:running] withKey:@”running”];
} else if (self.gameState == Runnning) {
self.gameState = Jump;
[runner removeAllActions];
runner.texture = [SKTexture textureWithImageNamed:@”ruuner_jump”];
[runner.physicsBody applyImpulse:CGVectorMake(10, 80)];
}
}
– (void)update:(NSTimeInterval)currentTime
{
SKSpriteNode *runner = (SKSpriteNode*)[self childNodeWithName:@”runner”];
if (self.gameState == Runnning) {
runner.physicsBody.velocity = CGVectorMake(120, 0);
} else if (self.gameState == Jump && runner.position.y < 40 && runner.physicsBody.velocity.dy < 0) {
self.gameState = Ready;
runner.texture = [SKTexture textureWithImageNamed:@”runner_run02″];
}
}
– (void)didSimulatePhysics
{
SKSpriteNode *runner = (SKSpriteNode*)[self childNodeWithName:@”runner”];
if (runner.position.x > CGRectGetMaxX(self.frame)) {
runner.position = CGPointMake(-25, runner.position.y);
}
}
– (void)didBeginContact:(SKPhysicsContact *)contact
{
SKNode *flag;
if (contact.bodyA.categoryBitMask == 0x1 << 3) {
flag = contact.bodyA.node;
} else {
flag = contact.bodyB.node;
}
if (flag) {
SKLabelNode *score = (SKLabelNode*)[self childNodeWithName:@”score”];
SKAction *zoom = [SKAction scaleTo:1.5 duration:0.5];
SKAction *fade = [SKAction fadeAlphaTo:0 duration:1.0];
SKAction *move = [SKAction moveTo:score.position duration:0.5];
[flag runAction:[SKAction group:@[zoom, fade, move]] completion:^{
[flag removeFromParent];
[self createFlag];
}];
score.text = [NSString stringWithFormat:@”%04d”, [score.text intValue] + 1];
}
}
@end
@interface ViewController ()
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
}
– (void)viewDidAppear:(BOOL)animated
{
SKView *spriteView = [[SKView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:spriteView];
SKScene *scene = [[RunScene alloc] initWithSize:spriteView.frame.size];
[spriteView presentScene:scene];
}
– (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end