file = GetString("file", "testground.png", "script png")
heightScale = GetInt("scale", 64)
tileSize = GetInt("tilesize", 128)

function init()
    matRock = CreateMaterial("rock", 0.3, 0.3, 0.3)
    matDirt = CreateMaterial("dirt", 0.26, 0.23, 0.20, 1, 0, 0.1)
    matGrass1 = CreateMaterial("unphysical", 0.17, 0.21, 0.15, 1, 0, 0.2)
    matGrass2 = CreateMaterial("unphysical", 0.19, 0.24, 0.17, 1, 0, 0.2)
    matTarmac = CreateMaterial("masonry", 0.35, 0.35, 0.35, 1, 0, 0.4)
    matTarmacTrack = CreateMaterial("masonry", 0.2, 0.2, 0.2, 1, 0, 0.3)
    matTarmacLine = CreateMaterial("masonry", 0.6, 0.6, 0.6, 1, 0, 0.6)

    LoadImage(file)

    w,h = GetImageSize()

    local maxSize = tileSize

    local y0 = 0
    while y0 < h do
        local y1 = y0 + maxSize
        if y1 > h then y1 = h end

        local x0 = 0
        while x0 < w do
            local x1 = x0 + maxSize
            if x1 > w then x1 = w end
            Vox(x0, 0, y0)
            Heightmap(x0, y0, x1, y1, heightScale, hollow==0)
            x0 = x1
        end
        y0 = y1
    end
end