I don't have idea how to do it

Question

Hello,

I try to move this block up and down. At the moment it viewed as horizontally but how do i make it go up and down? not horizontalli?

#import "MyScene.h"

@implementation MyScene

-(id)initWithSize:(CGSize)size {    
    if (self = [super initWithSize:size]) {
        /* Setup your scene here */

        self.backgroundColor = [SKColor colorWithRed:0.29 green:0.75 blue:.99 alpha:1];

        // create platform (just a colored aprite)
        SKSpriteNode *platform = [SKSpriteNode spriteNodeWithColor:[SKColor brownColor] size:CGSizeMake(100, 20)];
        platform.position = CGPointMake(50, 100);
        [self addChild:platform];

        // create the two actions
        SKAction *move = [SKAction moveByX:(size.width-platform.size.width) y:0 duration:2];
        SKAction *moveBack = [move reversedAction];
        // just wait
        SKAction *wait = [SKAction waitForDuration:0];

        // now sequence them
        SKAction *backAndForth = [SKAction sequence:@[move,wait,moveBack,wait]];

        SKAction *repeater = [SKAction repeatActionForever:backAndForth];

        // run it
        [platform runAction:repeater];



           }
    return self;
}


-(void)update:(CFTimeInterval)currentTime {
    /* Called before each frame is rendered */
}

@end

Answer 1 · 2014-12-27T02:06:28Z

December 27, 2014 2:06am

Your SKAction is set so that the sprite is movingX but not movingY In order to move up and down, you have to make it so the sprite changes by Y. For example

SKAction *move = [SKAction moveByX:0 y:(size.width-platform.size.width) duration:2];

Try this and see if it moves vertically now.

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Aurelian Spodarec

Aurelian Spodarec

I don't have idea how to do it

1 Answer

Michael Park

Michael Park