local textures = {}
local colors = {}

--[[-------------------------------------------------------------------------------------------------------------------------
    Window initialization
---------------------------------------------------------------------------------------------------------------------------]]

function GAME:Config( window )
    window.Title = "Avalanche - Revision 002"
    window.Width = 1280
    window.Height = 720

    return window
end

--[[-------------------------------------------------------------------------------------------------------------------------
    Core initialization
---------------------------------------------------------------------------------------------------------------------------]]

function GAME:Initialize()
    render.SetDepthEnabled( true )
    render.SetAlphaBlendingEnabled( true )
    render.SetTexturingEnabled( true )

    textures.gridsmall = Texture( "textures/gridsmall.png" )
    textures.gridbig = Texture( "textures/gridbig.png" )

    colors.whitetransparent = Color( 255, 255, 255, 20 )
    colors.whitetransparent2 = Color( 255, 255, 255, 80 )
end

--[[-------------------------------------------------------------------------------------------------------------------------
    Logic core
---------------------------------------------------------------------------------------------------------------------------]]

function GAME:Update()

end

--[[-------------------------------------------------------------------------------------------------------------------------
    Render core
---------------------------------------------------------------------------------------------------------------------------]]

function GAME:Draw()
    render.Clear( Color( 29, 30, 78 ) )
    render.ClearZ()

    render.Start3D( Vector( 3, 3, 3 ), Vector( 1, 1, 0 ), 45, 0.1, 50 )
        render.SetTexture( textures.gridsmall )
        render.DrawQuad(
            Vertex( Vector( -100, -100, 0 ), colors.whitetransparent, 0, 0 ),
            Vertex( Vector( 100, -100, 0 ), colors.whitetransparent, 1000, 0 ),
            Vertex( Vector( 100, 100, 0 ), colors.whitetransparent, 1000, 1000 ),
            Vertex( Vector( -100, 100, 0 ), colors.whitetransparent, 0, 1000 )
        )

        render.ClearZ()
        render.SetTexture( textures.gridbig )
        render.DrawQuad(
            Vertex( Vector( -100, -100, 0 ), colors.whitetransparent2, 0, 0 ),
            Vertex( Vector( 100, -100, 0 ), colors.whitetransparent2, 250, 0 ),
            Vertex( Vector( 100, 100, 0 ), colors.whitetransparent2, 250, 250 ),
            Vertex( Vector( -100, 100, 0 ), colors.whitetransparent2, 0, 250 )
        )
    render.End3D()
end