citadel_hud = {};

local function clr( color ) return color.r, color.g, color.b, color.a; end

function citadel_hud:PaintBar( x, y, w, h, colors, value )

        self:PaintPanel( x, y, w, h );

        x = x + 1; y = y + 1;
        w = w - 2; h = h - 2;

        local width = w * math.Clamp( value, 0, 1 );
        local shade = 4;

        surface.SetDrawColor( clr( colors.shade ) );
        surface.DrawRect( x, y, width, shade );

        surface.SetDrawColor( clr( colors.fill ) );
        surface.DrawRect( x, y + shade, width, h - shade );

end

function citadel_hud:PaintPanel( x, y, w, h, colors )

        surface.SetDrawColor( clr( colors.background.border ) );
        surface.DrawOutlinedRect( x, y, w, h );

        x = x + 1; y = y + 1;
        w = w - 2; h = h - 2;

        surface.SetDrawColor( clr( colors.background.background ) );
        surface.DrawRect( x, y, w, h );

end

function citadel_hud:PaintText( x, y, text, font, colors )

        surface.SetFont( font );
        surface.SetTextPos( x + 1, y + 1 );
        surface.SetTextColor( clr( colors.shadow ) );
        surface.DrawText( text );

        surface.SetTextPos( x, y );
        surface.SetTextColor( clr( colors.text ) );
        surface.DrawText( text );

end

function citadel_hud:TextSize( text, font )

        surface.SetFont( font );
        return surface.GetTextSize( text );

end


local vars =
{

        font = "TargetID",

        padding = 10,
        margin = 35,

        text_spacing = 2,
        bar_spacing = 5,

        bar_height = 16,

        width = 0.25

};

local colors =
{

        background =
        {

                border = Color( 190, 255, 128, 255 ),
                background = Color( 120, 240, 0, 75 )

        },

        text =
        {

                shadow = Color( 0, 0, 0, 200 ),
                text = Color( 255, 255, 255, 255 ),

        },

        health_bar =
        {

                border = Color( 255, 0, 0, 255 ),
                background = Color( 255, 0, 0, 75 ),
                shade = Color( 255, 104, 104, 255 ),
                fill = Color( 232, 0, 0, 255 )

        },

        suit_bar =
        {
                border = Color( 0, 0, 255, 255 ),
                background = Color( 0, 0, 255, 75 ),
                shade = Color( 136, 136, 255, 255 ),
                fill = Color( 0, 0, 219, 255 )

        }

};


function citadel_HUDPaint()

    local client = LocalPlayer();

    if( !client:Alive() ) then return; end

    local th = citadel_hud:TextSize( "TEXT", vars.font );

    local i = 2;

    local width = vars.width * ScrW();
    local bar_width = width - ( vars.padding * i );
    local height = ( vars.padding * i ) + ( th * i ) + ( vars.text_spacing * i ) + ( vars.bar_height * i ) + vars.bar_spacing;

    local x = vars.margin;
    local y = ScrH() - vars.margin - height;

    local cx = x + vars.padding;
    local cy = y + vars.padding;

    citadel_hud:PaintPanel( x, y, width, height, colors.background );

    local by = th + vars.text_spacing;

    local text = string.format( "Health: "..client:Health() );
    citadel_hud:PaintText( cx, cy, text, vars.font, colors.text );
    citadel_hud:PaintBar( cx, cy + by, bar_width, vars.bar_height, colors.health_bar, client:Health() / 100 );

    by = by + vars.bar_height + vars.bar_spacing;

    local text = string.format( "Suit: "..client:Armor() );
    citadel_hud:PaintText( cx, cy + by, text, vars.font, colors.text );
    citadel_hud:PaintBar( cx, cy + by + th + vars.text_spacing, bar_width, vars.bar_height, colors.suit_bar, client:Armor() / 100 );

end
hook.Add( "HUDPaint", "PaintCitadelHud", citadel_HUDPaint );