CODEWITHSUNDEEP
iosclasssprite-kit
jking14
jking14

Reputation: 49

Create a class identified by variables

I've always had issues with classes, and I'm not sure if this is possible.

I'm trying to create a class with an identifiable name. I realize that that isn't clear, but my overall goal is to create a grid-like game and each square in the grid would be a member in the class.

So for example, I would have a class called square and say in my code

square(16,47).isdead = true;

Basically, I want to know if it is possible to create a class where I can differentiate between at least a hundred different squares.

Also, not sure if this matters, but I am using sprite kit.

Upvotes: 0

Views: 61

Answers (1)

Theis Egeberg
Theis Egeberg

Reputation: 2576

Several ways to do what you want, I would prefer the below method.

C style two dimensional array:

Square * squares[10][10];

And you encapsulate that in a class called SquareManager with a method:

-(Square*) aSquareManager squareX:(short)x Y:(short)y;

If you specifically want the access pattern described in your question you can use (credit goes to arturgrigor):

#define square(x, y) [aSquareManager squareX:x Y:y]

Then you can access all of your squares this way:

if ([aSquareManager squareX:16 Y:47].isdead==true) [self showSkullForSquare:[aSquareManager squareX:16 Y:47]];

A different approach would be that a square has x and y properties:

Square.h
@property short y;
@property short x;

And then you put them all into an array, and when you need a square you search through the array.

for(Square * aSquare in squares) {
   if(aSquare.x==anXValue && aSquare.y==anYValue) {
      return aSquare;
   }
}

Functions like these are much quicker than you think.

Upvotes: 1

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