Healthbar

Script.offset = Vec2(0,0) --Vec2 "Offset"
Script.size = Vec2(160, 25) --Vec2 "Size"
Script.backgroundColor = Vec4() --color "Background color"
Script.healthbarColor = Vec4() --color "HealthBar color"
Script.frontcolor = Vec4() --color "Front color"
Script.overlayPath = "" -- path "Overlay" "Tex file (*tex):tex"
Script.overlay = nil
Script.player = nil
Script.backgroundColorFractioned = nil
Script.healthbarColorFractioned = nil

function Script:Start()
    self.player = self.entity:GetParent()

    if self.overlayPath ~= "" then
        self.overlay = Texture:Load(self.overlayPath)
    end
    --background
    local c = self.backgroundColor
    self.backgroundColorFractioned = Vec4(c.x/255, c.y/255, c.z/255, c.w/255)

    local c = self.healthbarColor
    self.healthbarColorFractioned = Vec4(c.x/255, c.y/255, c.z/255, c.w/255)
end

function Script:PostRender(context)
    -- Background
    context:SetColor(self.backgroundColorFractioned)
    context:DrawRect(self.offset.x, context:GetHeight() - self.offset.y, self.size.x, self.size.y)

    -- Healthbar
    context:SetColor(self.healthbarColorFractioned)
    local healthFactor = self.player.script.health / self.player.script.maxHealth
    context:DrawRect(self.offset.x,context:GetHeight() - self.offset.y, self.size.x * healthFactor, self.size.y)

    context:SetBlendMode(Blend.Alpha)
    context:SetColor(self.frontcolor)
    context:DrawText(healthFactor,self.offset.x,context:GetHeight())
    context:SetBlendMode(Blend.Solid)

    --Draw overlay
    if self.overlay ~= nil then
        context:SetBlendMode(Blend.Alpha)
        context:SetColor(self.frontcolor)
        context:DrawImage(self.overlay, 0, context:GetHeight() - self.overlay:GetHeight())
        context:SetBlendMode(Blend.Solid)
    end
end