--script by smallg
--trigger distance is the entity name & damage applied is the strength of the entity
--how far away to determine a hit 
local hit_distance = 150
--set to 1 to let boulder reset, set to 0 for 1 time only trap
local repeating = 1
--destroy the boulder (if not repeating)
local destroy = 0

--if you get issues with it not counting as "stopped" then increase the value here
local stopped_mod = 1 


local trigger_distance = {}
local damage = {}
local startx = {}
local starty = {}
local startz = {}
local oldx = {}
local oldy = {}
local oldz = {}
local firing = {}
local hit = {}
function trap_boulder_init_name(e,name)
trigger_distance[e] = tonumber(name)
CollisionOff(e)
firing[e] = 0
hit[e] = 0
end

function trap_boulder_main(e)
if startx[e] == nil or starty[e] == nil or startz[e] == nil then
startx[e] = g_Entity[e]['x']
starty[e] = g_Entity[e]['y']
startz[e] = g_Entity[e]['z']
else

if damage[e] == nil then
damage[e] = g_Entity[e]['health']
else

if firing[e] == 0 then
CollisionOff(e)
SetPosition(e,startx[e],starty[e],startz[e])
if GetPlayerFlatDistance(e) < trigger_distance[e] then
oldx[e] = g_Entity[e]['x']
oldy[e] = g_Entity[e]['y']
oldz[e] = g_Entity[e]['z']
StartTimer(e)
hit[e] = 0
firing[e] = 1
end
elseif firing[e] == 1 then
CollisionOn(e)
if GetPlayerDistance(e) < hit_distance then
if hit[e] == 0 then
HurtPlayer(e,damage[e])
hit[e] = 1
end
else
hit[e] = 0
end
if GetTimer(e) > 1100 then
StartTimer(e)
if g_Entity[e]['x'] > oldx[e] - stopped_mod and g_Entity[e]['x'] < oldx[e] + stopped_mod and g_Entity[e]['y'] > oldy[e] - stopped_mod and g_Entity[e]['y'] < oldy[e] + stopped_mod and g_Entity[e]['z'] > oldz[e] - stopped_mod and g_Entity[e]['z'] < oldz[e] + stopped_mod then
if repeating == 1 then
CollisionOff(e)
firing[e] = 0
else
if destroy == 1 then
Hide(e)
Destroy(e)
else
firing[e] = 2
end
end
else
oldx[e] = g_Entity[e]['x']
oldy[e] = g_Entity[e]['y']
oldz[e] = g_Entity[e]['z']
end
end

end --firing
end --damage value set 
end --start position set
end --main


function trap_boulder_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