mat_stack.lua

require "base/internal/ui/reflexcore"

mat_stack =
{
    userData = {};
};
registerWidget("mat_stack");

function mat_stack:initialize()
    self.userData = loadUserData();

    CheckSetDefaultValue(self, "userData", "table", {});
    CheckSetDefaultValue(self.userData, "alpha1", "number", 255);
    CheckSetDefaultValue(self.userData, "alpha2", "number", 255);
end

function mat_stack:drawOptions(x, y)
    local u = self.userData;

    uiLabel("Transparency (white boxes)", x, y);
    u.alpha1 = uiEditBox(u.alpha1, x+230, y, 80);
    y = y + 40;

    uiLabel("Transparency (black boxes)", x, y);
    u.alpha2 = uiEditBox(u.alpha2, x+230, y, 80);
    y = y + 40;

    saveUserData(u);
end

function draw_box(x, y, w, h, r, color, stroke, strokeColor)
    nvgBeginPath();

    nvgRoundedRect(x, y, w, h, r);
    nvgFillColor(color);
    nvgFill();

    if stroke then
        nvgStrokeWidth(2);
        nvgStrokeColor(strokeColor);
        nvgStroke();
    end
end

function mat_stack:draw()

    if not shouldShowHUD() then return end;

    local player = getPlayer();

    local alpha1 = self.userData.alpha1;
    local alpha2 = self.userData.alpha2;

    -- colors

    local colorTop = Color(255,255,255,alpha1);
    local colorMid = Color(255,176,14,alpha1);
    local colorLow = Color(236,0,0,alpha1);

    local iconColor;
    if player.armorProtection == 0 then iconColor = Color(2,167,46,255) end
    if player.armorProtection == 1 then iconColor = Color(245,215,50,255) end
    if player.armorProtection == 2 then iconColor = Color(236,0,0,255) end

    local healthColor = Color(255,255,255,alpha1);
    local armorColor = Color(255,255,255,alpha1);

    -- thresholds
    local top = 100;
    local mid = 65;
    local low = 30;

    -- health
    if player.health >= top then
        healthColor = colorTop;
    end
    if player.health < top then
        local x = (player.health - mid) / (top - mid);
        healthColor.r = x * colorTop.r + (1-x) * colorMid.r;
        healthColor.g = x * colorTop.g + (1-x) * colorMid.g;
        healthColor.b = x * colorTop.b + (1-x) * colorMid.b;
    end
    if player.health <= mid then
        local x = (player.health - low) / (mid - low);
        healthColor.r = x * colorMid.r + (1-x) * colorLow.r;
        healthColor.g = x * colorMid.g + (1-x) * colorLow.g;
        healthColor.b = x * colorMid.b + (1-x) * colorLow.b;
    end

    -- armor
    if player.armor >= top then
        armorColor = colorTop;
    end
    if player.armor < top then
        local x = (player.armor - mid) / (top - mid);
        armorColor.r = x * colorTop.r + (1-x) * colorMid.r;
        armorColor.g = x * colorTop.g + (1-x) * colorMid.g;
        armorColor.b = x * colorTop.b + (1-x) * colorMid.b;
    end
    if player.armor <= mid then
        local x = (player.armor - low) / (mid - low);
        armorColor.r = x * colorMid.r + (1-x) * colorLow.r;
        armorColor.g = x * colorMid.g + (1-x) * colorLow.g;
        armorColor.b = x * colorMid.b + (1-x) * colorLow.b;
    end

    -- style

    local color_IconBox = Color(0,0,0,alpha2);
    local color_HealthBox = healthColor;
    local color_ArmorBox = armorColor;

    local boxStroke = false;
    local boxStrokeColor = boxColor;

    local roundness = 0;
    local space = 0;

    -- boxes

    local size_Boxes = 80;

    local width_IconBox = size_Boxes;
    local height_IconBox = size_Boxes;

    local width_HealthBox = 105;
    local height_HealthBox = size_Boxes;

    local width_ArmorBox = width_HealthBox;
    local height_ArmorBox = size_Boxes;

    local x_IconBox = -width_IconBox / 2;
    local y_IconBox = -width_IconBox / 2;

    local x_HealthBox = x_IconBox - space - width_HealthBox;
    local y_HealthBox = y_IconBox;

    local x_ArmorBox = width_IconBox / 2 + space;
    local y_ArmorBox = y_IconBox;

    -- draw

    draw_box(x_IconBox, y_IconBox, width_IconBox, height_IconBox, roundness, color_IconBox);
    draw_box(x_HealthBox, y_HealthBox, width_HealthBox, height_HealthBox, roundness, color_HealthBox);
    draw_box(x_ArmorBox, y_ArmorBox, width_ArmorBox, height_ArmorBox, roundness, color_ArmorBox);

    -- content

    local pad = 10;

    local size_Icon = size_Boxes / 2 - pad;
    local x_Icon = x_IconBox + width_IconBox / 2;
    local y_Icon = y_IconBox + height_IconBox / 2;

    local size_Health = size_Boxes * 1.1;
    local x_Health = x_HealthBox + width_HealthBox / 2;
    local y_Health = y_HealthBox + height_HealthBox / 2;

    local size_Armor = size_Health;
    local x_Armor = x_ArmorBox + width_ArmorBox / 2;
    local y_Armor = y_ArmorBox + height_ArmorBox / 2;

    -- draw

    nvgFillColor(iconColor);
    nvgSvg("internal/ui/icons/armor", x_Icon, y_Icon, size_Icon);

    nvgFontSize(size_Health);
    --nvgFontFace("TitilliumWeb-Bold");
    nvgTextAlign(NVG_ALIGN_CENTER, NVG_ALIGN_MIDDLE);
    nvgFontBlur(0);

    nvgFillColor(Color(0,0,0,255));
    nvgText(x_Health, y_Health, player.health);

    nvgFillColor(Color(0,0,0,255));
    nvgText(x_Armor, y_Armor, player.armor);

end