Color — RGBA Color Values for RollingQuest Scripts

-- Full RGBA
local red  = Color.new(1, 0, 0, 1)

-- RGB only — alpha defaults to fully opaque (1)
local blue = Color.new(0, 0, 1)

-- Grayscale — all three channels are set to the same value
local mid  = Color.new(0.5)

-- Grayscale with explicit alpha
local fog  = Color.new(0.8, 0.4)

-- No arguments — returns black (0, 0, 0, 0)
local blank = Color.new()

--- @param a Color
--- @param b Color
--- @param t number
--- @return Color
function Color.lerp(a, b, t)

--- @param a Color
--- @param b Color
--- @param t number
--- @return Color
function Color.lerpUnclamped(a, b, t)

-- A semi-transparent orange
local orange = Color.new(1.0, 0.5, 0.0, 0.75)

-- Pure white (shorthand via static constant)
local white = Color.white

-- A dark gray using the grayscale constructor
local darkGray = Color.new(0.2)

local t = 0

function OnUpdate(delta)
    t = t + delta * 0.5   -- takes 2 seconds to blend fully
    if t > 1 then t = 1 end

    local blended = Color.lerp(Color.blue, Color.red, t)
    self.renderer.color = blended
end

local bgColor = Color.new(0.1, 0.05, 0.2, 0.9)  -- deep purple, slightly transparent

Dialog.show({
    text       = "A mysterious voice whispers from the dark...",
    background = bgColor,
    textColor  = Color.white,
})

local c = Color.new(0.8, 0.3, 0.1, 1.0)

print("Red:   " .. tostring(c.r))         -- 0.8
print("Green: " .. tostring(c.g))         -- 0.3
print("Blue:  " .. tostring(c.b))         -- 0.1
print("Gray:  " .. tostring(c.grayscale)) -- perceptual average