Array of Tiles

This is a discussion on Array of Tiles within the Game Programming forums, part of the General Programming Boards category; How can i make an array of tiles? i have made a struct that looks something like this: Code: typedef ...

  1. #1
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    Angry Array of Tiles

    How can i make an array of tiles? i have made a struct that looks something like this:

    Code:
    typedef struct _TILE {
         bool blocked;
         UINT graphic;
    } TILE
    and i want to make an array of this, i have tried:
    TILE tTiles[10][10] but this doesnt seem to work, can someone please help me?

    Thanks

    [EDIT]
    The initial thing works, but when i try to go:

    Code:
    int x=1;
         tTiles[x].blocked = true;
    doesnt work

  2. #2
    Used Registerer jdinger's Avatar
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    From what you've posted here the reason it's not working would be because you're trying to access a 2d array as if it were a 1d array.

    TILE tTiles[10][10] but this doesnt seem to work, can someone please help me?

    Thanks

    [EDIT]
    The initial thing works, but when i try to go:


    code:--------------------------------------------------------------------------------int x=1;
    tTiles[x].blocked = true;
    your code should look more like:
    Code:
    //for clarity I defined x, etc.
    int x=0;
    int y=2;
    
    TILES tTiles[10][10];
    
    tTiles[x][y].blocked=true;
    Unless leaving out the other dimension was a typo, then I'd have to see more of your code and errors to know exactly what part isn't working.

  3. #3
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    ahh nope it wasnt a typo, but i was taught that you can access a 2D array like a 1D array, ie:

    int array[2][2] would be equal to int array[4], ill try it and reply to tell if it works
    "There are three kinds of people in the world...
    Those that can count and those that can't."

  4. #4
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    Huh?

    I don't think that would work,
    since you could have [1][3] or [3][1], etc...

  5. #5
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    it does work you just have to make sure you index into the array properly.

    Edit: why you'd want to do it that way fora simple program, i dont know!
    Quidquid latine dictum sit, altum sonatur.
    Whatever is said in Latin sounds profound.

  6. #6
    geek SilentStrike's Avatar
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    "it does work you just have to make sure you index into the array properly."

    It would work if you casted it.

    tiles[x] is a TILE*, not a TILE

    warning, I really don't advise this in real program it's just for the sake of understanding how 2d arrays work.

    Code:
    #include <iostream>
    
    struct ugly {
    	int number;
    };
    
    int main() {
    	ugly mess[10][10];
    	for (int i = 0; i < 10; i++) {
    		for (int j = 0; j < 10; j++) {
    			mess[i][j].number = i * j;
    		}
    	}
    
    	// std::cout << mess[2].num << std::endl; // illegal
    	std::cout << mess[1][5].number << std::endl;                // 1*10 + 5 th = 15 th spot = 1*5
    	std::cout << ((ugly*) mess)[15].number << std::endl;   // same thing, uglier
    
    	return 0;
    }
    Prove you can code in C++ or C# at TopCoder, referrer rrenaud
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