local N = require "scriptbank\\Cine Guru\\cg_pnoise"

local max = math.max
local min = math.min
local rad = math.rad
local deg = math.deg

local random = math.random

math.randomseed(os.time())
random(); random(); random()

local trauma = 0.2
local period = 550

local lastShakeTime = 0
local seed1, seed2, seed3 = random() * 1000, random() * 1000, random() * 1000
local maxPitch =  5
local maxYaw   = 20
local maxRoll  =  5

local function AddShake( xA, yA, zA, timeNow )
	-- trauma fade over time
	if trauma > 0 then
		if timeNow - lastShakeTime > 2000 then
			seed1 = random() * 1000
			seed2 = random() * 1000
			seed3 = random() * 1000
		end 
		lastShakeTime = timeNow
		
		local shake = trauma^2
		local t = timeNow / period
		xA = xA + maxPitch * shake * N.PNoise( t, seed1 )
		yA = yA + maxYaw   * shake * N.PNoise( t, seed2 )
		zA = zA + maxRoll  * shake * N.PNoise( t, seed3 )					  
	end
	return xA, yA, zA
end

local gpcOverride = false

local orig_gpc = nil

local function gpcControl()
	orig_gpc()
	
	if ( GetGamePlayerControlThirdpersonEnabled() == 0 ) then 
	
		local angx = GetCameraAngleX(0)
		local angy = GetCameraAngleY(0)
		local angz = GetCameraAngleZ(0)
		
		angx, angy, angz = AddShake( angx, angy, angz, g_Time )
	
		SetCameraAngle( 0, angx, angy, angz )
	end
end


function player_wobble_init()
end

function player_wobble_main()
	if not gpcOverride and
	   gameplayercontrol ~= nil then
		orig_gpc = gameplayercontrol.control
		gameplayercontrol.control = gpcControl
		gpcOverride = true
	end
end