"Questions that don't deserve their own thread" thread

[Cryogenical]

It did nothing but change the size of my window. Still had borders.

[Jasoco]

It did nothing but change the size of my window. Still had borders.

Are you trying to remove the border or make the window resizable? Because they're two separate things. Just add "borderless = true" to that table. Go to the Wiki and look up love.window.setMode(). There's a lot of settings in there to play with.

[Zilarrezko]

It did nothing but change the size of my window. Still had borders.

What system do you have? Because I know windows 8 won't get rid of borders unless you make it borderless and make it not resizeable.

Sorry I probably forgot to put in borderless.

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local resizeable = false
local borderless = false

function love.keypressed(key, unicode)
      if key == "5" then
           resizeable = not resizeable
           borderless = not borderless
           love.window.setMode(1080, 720, {resizable = resizeable, borderless = borderless})
      end
end

See if that works, sorry.

[Cryogenical]

Closer, but the window was still resizeable.
I am running on windows 8 sadly.

I fixed it by either changing the local variable for resizeable to true, or just getting rid of the function of resizeable = not resizeable.

Thank you guys though! Helps a lot.

[rmcode]

Somehow my brain can't process why this

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return content and content:isPassable() or true;

doesn't work like this:

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        if content then
            return content:isPassable();
        else
            return true;
        end

[Robin]

Because

Code: Select all

a and b or c

is the same as

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(a and b) or c

which returns c if either a or b is falsy, otherwise it returns b.

What you want is

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return not content or content:isPassable()

[rmcode]

Ah ... so the statement would return true, if isPassable() returns false. That's where the mistake was. I thought it would directly return the result of isPassable() if there was content and return true if there wasn't.

Thanks for the explanation.

[Whatthefuck]

How do I use getPointer with FFI on an ImageData object to change a certain pixel in it? Is the ImageData array two dimensional, and what variable names do the pixel colors use?

[slime]

If you use this (all you need to do is require the file) then you'll get the performance of LuaJIT's FFI when calling ImageData methods, without having to worry about whether your C pointer / array arithmetic is correct.

[rmcode]

I wrote a shader yesterday, which allows me to cycle through different colour palettes. Since I am pretty new to shaders I used a pretty brute-force approach:

Code: Select all

vec4 effect( vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords )
{
    vec4 tex = Texel(texture, texture_coords);

    if (tex.r == 0 && tex.g == 0 && tex.b == 0) {                   // Black
        tex.r = PALETTE[0][0];
        tex.g = PALETTE[0][1];
        tex.b = PALETTE[0][2];
    } else if (tex.r == 1.0 && tex.g == 1.0 && tex.b == 1.0) {      // White
        tex.r = PALETTE[1][0];
        tex.g = PALETTE[1][1];
        tex.b = PALETTE[1][2];
    } else if (tex.r >= 0.5 && tex.g >= 0.5 && tex.b >= 0.5) {      // Light Gray
        tex.r = PALETTE[2][0];
        tex.g = PALETTE[2][1];
        tex.b = PALETTE[2][2];
    } else if (tex.r >= 0.2 && tex.g >= 0.2 && tex.b >= 0.2) {      // Dark Gray
        tex.r = PALETTE[3][0];
        tex.g = PALETTE[3][1];
        tex.b = PALETTE[3][2];
    }

    // This will make every pixel of the sprite opaque.
    // tex.a = color.a;

    return tex;
}

It works fine for the colour cycling part, but not for transparent images. When I set love.graphics.setColor(255, 255, 255, 0), it still shows the sprite at 100 % opacity. I know I have to do something with the alpha, but I'm not sure what :S