Game Development Reference
In-Depth Information
How to do it...
Now is the time for action; perform the following steps to add the infinite scrolling back-
ground to your game.
1. Import the
SpaceBackground.png
file provided in the
Resources
folder.
2. Add a function in
FSMyScene
for initializing the infinite background.
3. In order to enable scrolling, we have to add two identical background sprite nodes
one after the other.
4. In the function, run a
for
loop for two background nodes specifying the position,
a name (tag), and then adding to
SKMyScene
.
5. Hence, the
initalizingScrollingBackground
function looks like this:
- (void)initalizingScrollingBackground
{
for (int index = 0; index < 2; index++)
{
SKSpriteNode *spaceBGNode =
[SKSpriteNode
spriteNodeWithImageNamed:@"SpaceBackground.png"];
{
spaceBGNode.position =
CGPointMake(index *
spaceBGNode.size.width, 0);
spaceBGNode.anchorPoint = CGPointZero;
spaceBGNode.name = @"SpaceBG";
[self addChild:spaceBGNode];
}
}
}
6. Add this method into the
init
method and also move the code to add a spaceship
into a different method called
addSpaceship
.
