Color

function GetHitPointsColor(currentHitPoints, maxHitPoints)
    -- 3 point gradient color, from red to yellow then green
    local percent = 1

    if maxHitPoints > 0 then
        percent = currentHitPoints / maxHitPoints
        percent = CoreMath.Clamp(percent, 0, 1)
    end

    local c

    if percent < 0.5 then
        c = Color.Lerp(Color.RED, Color.YELLOW, percent * 2)
    else
        c = Color.Lerp(Color.YELLOW, Color.GREEN, percent * 2 - 1)
    end

    return c
end

function MakeRandomColor()
    local c = Color.Random()
    local sHex = c:ToStandardHex()
    local lHex = c:ToLinearHex()
    print("Random color. SHex = "..sHex..". LHex = "..lHex..". RBGA = ("
        ..c.r..","..c.g..","..c.b..","..c.a..")")
end

for i = 1,10 do
    MakeRandomColor()
end

local COLOR_CONSTANTS = {
    Color.WHITE,
    Color.GRAY,
    Color.BLACK,
    Color.TRANSPARENT,
    Color.RED,
    Color.GREEN,
    Color.BLUE,
    Color.CYAN,
    Color.MAGENTA,
    Color.YELLOW,
    Color.ORANGE,
    Color.PURPLE,
    Color.BROWN,
    Color.PINK,
    Color.TAN,
    Color.RUBY,
    Color.EMERALD,
    Color.SAPPHIRE,
    Color.SILVER,
    Color.SMOKE,
}

function Tick()
    local playerPos = Game.GetLocalPlayer():GetWorldPosition()
    local radius = 500
    local angle = math.rad(360) / #COLOR_CONSTANTS
    local params = { thickness = 10 }

    for i,c in ipairs(COLOR_CONSTANTS) do
        params.color = c
        local v = Vector3.ZERO
        local theta = angle * (i - 1) + time()
        v.x = math.cos(theta) * radius
        v.y = math.sin(theta) * radius
        CoreDebug.DrawLine(playerPos, playerPos + v, params)
    end
end

local color = Color.New(1, 0, 0.5)
UI.PrintToScreen("MAGENTA", color)

local UI_TEXT = script:GetCustomProperty("UITextBox"):WaitForObject()
local START_COLOR = UI_TEXT:GetColor()
local SPEED = 0.2
local elapsedTime = 1

function Tick(deltaTime)
    elapsedTime = CoreMath.Clamp(elapsedTime - deltaTime * SPEED)
    local color = START_COLOR:GetDesaturated(elapsedTime)
    UI_TEXT:SetColor(color)
end