Moving the Grid

[FatalMarshmallow]

I've searched both forums and the wiki for an answer, but none seem to be what I'm searching for.
At the bottom of the Gridlocked Player tutorial, you'll find this:
"The map starts off at 32,32 when it would make more sense for it to start at 0,0. A little bit of arithmetic could fix this pretty easily, but it does make the code a bit more complex and hard to follow."
However, I have no idea how this would be done, as I haven't been using love for long.
Thanks for any help

[Ranguna259]

Post your code or a .love file

[SeducingOrange]

I've searched both forums and the wiki for an answer, but none seem to be what I'm searching for.
At the bottom of the Gridlocked Player tutorial, you'll find this:
"The map starts off at 32,32 when it would make more sense for it to start at 0,0. A little bit of arithmetic could fix this pretty easily, but it does make the code a bit more complex and hard to follow."
However, I have no idea how this would be done, as I haven't been using love for long.
Thanks for any help

It does make sense for it to start at 32,32 because you are adding the player width and height to 0,0. If you were to start at 0,0 the player would be off screen.

[FatalMarshmallow]

Code: Select all

function love.load()
    player = {
        grid_x = 256,
        grid_y = 256,
        act_x = 200,
        act_y = 200,
        speed = 10
    }
    map = {
        { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
        { 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 },
        { 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1 },
        { 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1 },
        { 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1 },
        { 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 },
        { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
        { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
        { 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 },
        { 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1 },
        { 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 },
        { 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 },
        { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
    }
end

function love.update(dt)
    player.act_y = player.act_y - ((player.act_y - player.grid_y) * player.speed * dt)
    player.act_x = player.act_x - ((player.act_x - player.grid_x) * player.speed * dt)
end

function love.draw()
    love.graphics.rectangle("fill", player.act_x, player.act_y, 32, 32)
    for y=1, #map do
        for x=1, #map[y] do
            if map[y][x] == 1 then
                love.graphics.rectangle("line", x * 32, y * 32, 32, 32)
            end
        end
    end
end

function love.keypressed(key)
    if key == "up" then
        if testMap(0, -1) then
            player.grid_y = player.grid_y - 32
        end
    elseif key == "down" then
        if testMap(0, 1) then
            player.grid_y = player.grid_y + 32
        end
    elseif key == "left" then
        if testMap(-1, 0) then
            player.grid_x = player.grid_x - 32
        end
    elseif key == "right" then
        if testMap(1, 0) then
            player.grid_x = player.grid_x + 32
        end
    end
end

function testMap(x, y)
    if map[(player.grid_y / 32) + y][(player.grid_x / 32) + x] == 1 then
        return false
    end
    return true
end

[Nuthen224]

I think under love.draw you'd want to change:

love.graphics.rectangle("line", x * 32, y * 32, 32, 32)

to:

love.graphics.rectangle("line", x * 32 - 32, y * 32 - 32, 32, 32)

because when x = 1, that means the tile begins at 32, subtracting 32 causes it to start at 0. I think that's the solution you're looking for

[Ranguna259]

On line 32 replace

Code: Select all

love.graphics.rectangle("line", x * 32, y * 32, 32, 32)

with:

Code: Select all

love.graphics.rectangle("line", x * 32-32, y * 32-32, 32, 32)

If you don't know why that happened at first glance then look again, it's really self explanatory

[luislasonbra]

I've searched both forums and the wiki for an answer, but none seem to be what I'm searching for.
At the bottom of the Gridlocked Player tutorial, you'll find this:
"The map starts off at 32,32 when it would make more sense for it to start at 0,0. A little bit of arithmetic could fix this pretty easily, but it does make the code a bit more complex and hard to follow."
However, I have no idea how this would be done, as I haven't been using love for long.
Thanks for any help

here's what you want to do.

Test Move 32 Space.love

(739 Bytes) Downloaded 197 times

I correct
but if you want the speed at which you move the player to change

Test Move 32 Space.love

(820 Bytes) Downloaded 204 times