Antumbra

A Minecraft style rendering experiment.

Pictures

Lighting

Lighting (both point light and skylight) unfortunately didn't make it into this version. The algorithm for point light is as follows though:

PointLight(x, y, z, level)
    SetLight(x, y, z, level)
    LightAxis(x, y, z, Right)
    LightAxis(x, y, z, Left)
    LightAxis(x, y, z, Up)
    LightAxis(x, y, z, Down)
    LightAxis(x, y, z, Forward)
    LightAxis(x, y, z, Backward)

LightAxis(x, y, z, direction)
    for(i = GetLight(x, y, z) - 1; i != 0; i--)
        switch(direction)
            Right    -> x++
            Left     -> x--
            Up       -> y++
            Down     -> y--
            Forward  -> z++
            Backward -> z--
        if(GetBlock(x, y, z) != Air)
            break
        else if(GetLight(x, y, z) >= i)
            break
        else
            SetLight(x, y, z, i)
        switch(direction)
            Right & Left ->
                LightAxis(x, y, z, Up)
                LightAxis(x, y, z, Down)
                LightAxis(x, y, z, Forward)
                LightAxis(x, y, z, Backward)
            Up & Down ->
                LightAxis(x, y, z, Right)
                LightAxis(x, y, z, Left)
                LightAxis(x, y, z, Forward)
                LightAxis(x, y, z, Backward)
            Forward & Backward ->
                LightAxis(x, y, z, Right)
                LightAxis(x, y, z, Left)
                LightAxis(x, y, z, Up)
                LightAxis(x, y, z, Down)

Skylight is the same, but has no vertical attenuation before it hits the ground.

Special Thanks

Special thanks to who Disco who created the Minecraft texture pack I got the textures from. You can check out his work here: http://www.ocddisco.com/