I started working on my Tower defense project in Xcode with the new Spritekit framework and I wanted to add a visible radius (circle) around ANY tower that the player would create.
So I created the following code:
// Place Towers
-(void)mouseUp:(NSEvent *)theEvent {
/* Called when a mouse click occurs */
CGPoint location = [theEvent locationInNode:self];
SKSpriteNode *sprite = [SKSpriteNode spriteNodeWithImageNamed:@"tower"];
sprite.position = location;
sprite.scale = 1.5;
CGContextRef myContext = [[NSGraphicsContext currentContext] graphicsPort];
CGContextAddArc(myContext, location.x, location.y, 10, 0, M_PI*2, YES);
CGContextSetRGBStrokeColor(myContext, 0, 0, 225, 0);
[self addChild:sprite];
}
I'm not familiar with the angles and other things because I am doing this for the first time, so I'm just guessing that it should be like that. I'm pretty sure that I missed something.
Thanks for any advice (I await some great criticism).
Directly from the SpriteKit programming guide :
SKShapeNode *ball = [[SKShapeNode alloc] init];
CGMutablePathRef myPath = CGPathCreateMutable();
CGPathAddArc(myPath, NULL, 0,0, 15, 0, M_PI*2, YES);
ball.path = myPath;
ball.lineWidth = 1.0;
ball.fillColor = [SKColor blueColor];
ball.strokeColor = [SKColor whiteColor];
ball.glowWidth = 0.5;