---@meta

---@class Shake : Object
---@field amplitude number The maximum shake strength in pixels
---@field frequency number How many shake samples per second
---@field duration number Duration of the shake in milliseconds
---@field samples number[] Pre-generated noise samples for smooth interpolation
---@field start_time number Timestamp (ms) when shake started
---@field t number Current elapsed time in milliseconds
---@field shaking boolean Whether the shake is still active
Shake = {}

---Creates a new camera shake effect.
---@param amplitude number Maximum shake offset in pixels
---@param frequency number Samples per second (higher = more erratic)
---@param duration number Duration in milliseconds
function Shake:new(amplitude, frequency, duration) end

---Updates the shake timer. Call every frame.
---@param dt number Delta time in seconds (from love.update)
function Shake:update(dt) end

---Gets the current shake amplitude at time `t`.
---If `t` is not provided, uses current elapsed time.
---@param t? number Optional time in milliseconds
---@return number amplitude Current shake strength (0 when finished)
function Shake:getAmplitude(t) end

---Internal: Gets noise value at sample index.
---@param s number Sample index (float allowed for interpolation)
---@return number noise Value between -1 and 1
function Shake:noise(s) end

---Internal: Linear decay envelope (1 → 0 over duration).
---@param t number Time in milliseconds
---@return number decay_factor From 1.0 down to 0.0
function Shake:decay(t) end