string array of objects - sprite kit - ios

Question

I have an array of names of sksprite nodes. i need to make a new array and put the name from the last array but the sprite node that is closest to (tilt - name of another node) will be first in the array And so on.
if I didn't explain my self clear enough tell me. please if anyone know how to do it. write here.
thanks

Answer 1

As I said previously, your question lacked some specifics in exactly how this is to be implemented. I have made my code somewhat generic to be adaptable to pretty much any scenario you might have in mind.
I used the touch location coordinates as a starting point to calculating distances to the 4 nodes on screen. Click anywhere on the screen and a list will print with the 4 node names in order of distance.
There's probably a better way of sorting this but I decided on the quick and dirty way.
#import "GameScene.h"
#implementation GameScene {
SKSpriteNode *node0;
SKSpriteNode *node1;
SKSpriteNode *node2;
SKSpriteNode *node3;
NSMutableArray *nodeArray;
}
-(void)didMoveToView:(SKView *)view {
self.backgroundColor = [SKColor blackColor];
nodeArray = [[NSMutableArray alloc] init];
node0 = [SKSpriteNode spriteNodeWithColor:[SKColor redColor] size:CGSizeMake(10, 10)];
node0.name = #"red";
node0.position = CGPointMake(300, 300);
[self addChild:node0];
[nodeArray addObject:node0];
node1 = [SKSpriteNode spriteNodeWithColor:[SKColor blueColor] size:CGSizeMake(10, 10)];
node1.name = #"blue";
node1.position = CGPointMake(450, 500);
[self addChild:node1];
[nodeArray addObject:node1];
node2 = [SKSpriteNode spriteNodeWithColor:[SKColor yellowColor] size:CGSizeMake(10, 10)];
node2.name = #"yellow";
node2.position = CGPointMake(100, 400);
[self addChild:node2];
[nodeArray addObject:node2];
node3 = [SKSpriteNode spriteNodeWithColor:[SKColor greenColor] size:CGSizeMake(10, 10)];
node3.name = #"green";
node3.position = CGPointMake(200, 200);
[self addChild:node3];
[nodeArray addObject:node3];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
for (UITouch *touch in touches) {
CGPoint touchLocation = [touch locationInNode:self];
NSMutableArray *myArray = [[NSMutableArray alloc] init];
NSMutableDictionary *myDict = [[NSMutableDictionary alloc] init];
for(SKSpriteNode *object in nodeArray) {
float xDistance = fabsf(touchLocation.x - object.position.x);
float yDistance = fabsf(touchLocation.y - object.position.y);
NSString *totalDistance = [NSString stringWithFormat:#"%f",(xDistance+yDistance)];
[myDict setValue:totalDistance forKey:object.name];
}
float lowestValue = 999999.0;
NSMutableString *lowestName = [[NSMutableString alloc] init];
for (int i=0; i<[nodeArray count]; i++) {
for (NSString *key in myDict) {
if([[myDict objectForKey:key] floatValue] < lowestValue) {
lowestValue = [[myDict objectForKey:key] floatValue];
[lowestName setString:key];
}
}
[myArray addObject:[NSString stringWithString:lowestName]];
[myDict removeObjectForKey:lowestName];
lowestValue = 999999.0;
}
NSLog(#"values: %#",myArray);
}
}