Having trouble creating an unbound game

[AliannejadiPourya]

Hello dear developers, I am trying to recreate a game like Splix.io using FXGL, I have implemented the logic of the game for one player and it works.
And for my game window I am using a 800*800 window. My problem is my game should be "unbounded" which means that the player should be able to move till infinity if it desires it and I have been trying different stuff to make this happen but none of them work.

As you know Splix.io has a gird like board so to create this grid I created Light Gray cells of 20 pixels like this:

@Spawns("cell")
public Entity newCell(SpawnData data) {
    return FXGL.entityBuilder(data)
            .view(new Rectangle(BLOCK_SIZE,BLOCK_SIZE, Color.LIGHTGRAY))
            .with(new CellComponent())
            .build();
}

@Spawns("player")
public Entity newPlayer(SpawnData data) {
    return FXGL.entityBuilder(data)
            .view("steve.png")
            .zIndex(100)
            .build();
}

and this is how I initialize the game board at the start:

    cells = new Entity[40][40];

    player = spawn("player", 400, 400);
    for (int y = 0; y < 40; y++) {
        for (int x = 0; x < 40; x++) {
            cells[x][y] = spawn("cell", x * BLOCK_SIZE, y * BLOCK_SIZE);
        }
    }

Can someone tell me how I can make this fixed size game unbounded?
One idea that I had was to check if the player comes close to any side of the window and if they get close I make the game window bigger and move the board but I don't know if this is the right way or not and even if it is, I don't know how to properly implement it.

[AlmasB]

Hi, this sounds like a logic question, rather than an FXGL-specific question. I think it ultimately boils down to a data structure problem. My first thought is to go for something like a Map<Point2D, cell data> that allows you to keep track of all cells in the game and update as appropriate. Alternatively, you can try finding some resources on different ways to store your grid.

As far as the implementation related to FXGL goes, you can use getGameScene().getViewport().bind... to bind the viewport to your player entity, which will solve all the movement and camera problems.

[AliannejadiPourya]

Hi! Thanks for answering, it was as you said. I solved the problem by using a Hash Map of Map<Integer, Map<Integer, Entity>>.
and yes after using the Viewport().bind the camera problem got fixed!