local active_range = 500 --when platform will start moving
local max_move = 400 --adjusts how far the platform moves
local speed = 50 --adjusts how fast the platform moves (adjust max_move and speed together)


local falling_height_mod = 100 --when to start triggering damage so player wont fall forever
local kill_on_fall = 1 --set to 1 if you want the script to kill the player when he falls (i.e. no terrain below the player or to set a spike trap etc you can leave at 0 if the player will naturally die from the fall damage)

local moved = {}
local state = {}
function moving_platform_init(e)
state[e] = "wait"
moved[e] = 0
end

function moving_platform_main(e)

if GetPlayerDistance(e) < active_range then
if state[e] == "wait" then
state[e] = "move forward"
elseif state[e] == "move forward" then
if moved[e] < max_move then
CollisionOff(e)
MoveForward(e,speed)
CollisionOn(e)
moved[e] = moved[e] + 1 
else
state[e] = "move back"
end
elseif state[e] == "move back" then
if moved[e] > -max_move then
CollisionOff(e)
MoveForward(e,-speed)
CollisionOn(e)
moved[e] = moved[e] - 1 
else
state[e] = "move forward"
end
end

else
state[e] = "wait"
end --player dis

if kill_on_fall == 1 then
if g_PlayerPosY < g_Entity[e]['y'] - falling_height_mod and GetPlayerFlatDistance(e) < 100 then
HurtPlayer(e,g_PlayerHealth)
end
end

end

function moving_platform_exit(e)

end

function GetPlayerFlatDistance(e)
  tPlayerDX = (g_Entity[e]['x'] - g_PlayerPosX)
  tPlayerDZ = (g_Entity[e]['z'] - g_PlayerPosZ)
  return math.sqrt(math.abs(tPlayerDX*tPlayerDX)+math.abs(tPlayerDZ*tPlayerDZ));
end