local health = {}
local pressed = 0

--enemies will move into this range to fire
local fire_range = 1500

--how close the player needs to get to perform the stealth kill
local stealth_kill_range = 120

--how much HP is gained for the kill
local kill_health_gain = 50

--the key press required to perform the kill
local input = "e"

function stealth_kill_init(e)
ai_soldier_state[e] = "patrol"
ai_soldier_pathindex[e] = -1
end


function stealth_kill_main(e)
EntObjNo = g_Entity[e]['obj']
if health[e] == nil then
health[e] = g_Entity[e]['health']
end


if ai_soldier_state[e] == "patrol" then
CharacterControlUnarmed(e)
if g_Entity[e]['health'] < health[e] or g_Entity[e]['plrvisible'] == 1 or AIGetEntityHeardSound(EntObjNo) == 1 then
ai_soldier_state[e] = "alert"
else
  if ai_soldier_pathindex[e] == -1 then
   ai_soldier_pathindex[e] = -2
   PathIndex = -1
   PathPointIndex = -1
   pClosest = 99999
   for pa = 1, AIGetTotalPaths(), 1 do
    for po = 1 , AIGetPathCountPoints(pa), 1 do
     pDX = g_Entity[e]['x'] - AIPathGetPointX(pa,po)
     pDZ = g_Entity[e]['z'] - AIPathGetPointZ(pa,po)
     pDist = math.sqrt(math.abs(pDX*pDX)+math.abs(pDZ*pDZ))
     if pDist < pClosest and pDist < 300 then
      pClosest = pDist
      PathIndex = pa
	  PathPointIndex = po
     end
    end -- po
   end -- pa
   if PathIndex > -1 then
    ai_soldier_pathindex[e] = PathIndex
	ai_path_point_index[e] = PathPointIndex
	ModulateSpeed(e,1.0)
	SetCharacterToWalk(e)
	ai_path_point_direction[e] = 1
	ai_path_point_max[e] = AIGetPathCountPoints(ai_soldier_pathindex[e])
   end   
  end
  if ai_soldier_pathindex[e] > -1 then 
   ai_patrol_x[e] = AIPathGetPointX(ai_soldier_pathindex[e],ai_path_point_index[e])
   ai_patrol_z[e] = AIPathGetPointZ(ai_soldier_pathindex[e],ai_path_point_index[e])
   AIEntityGoToPosition(EntObjNo,ai_patrol_x[e],ai_patrol_z[e])
   tDistX = g_Entity[e]['x'] - ai_patrol_x[e]
   tDistZ = g_Entity[e]['z'] - ai_patrol_z[e]
   DistFromPath = math.sqrt(math.abs(tDistX*tDistX)+math.abs(tDistZ*tDistZ))	
   if DistFromPath < 50 then
	if ai_path_point_direction[e] == 1 then
	 ai_path_point_index[e] = ai_path_point_index[e] + 1
	 if ( ai_path_point_index[e] > ai_path_point_max[e] ) then
	  ai_path_point_index[e] = ai_path_point_max[e] - 1
	  ai_path_point_direction[e] = 0
	 end
	else
	 ai_path_point_index[e] = ai_path_point_index[e] - 1
	 if ( ai_path_point_index[e] < 1 ) then
	  ai_path_point_index[e] = 2
	  ai_path_point_direction[e] = 1
	 end		
	end
   end
  end
 end

elseif ai_soldier_state[e] == "alert" then
CharacterControlArmed(e)
RotateToPlayer(e)
if GetPlayerDistance(e) > fire_range * 1.3 then
ai_soldier_state[e] = "patrol"
health[e] = g_Entity[e]['health']
elseif GetPlayerDistance(e) > fire_range then
AIEntityGoToPosition(EntObjNo,g_PlayerPosX,g_PlayerPosZ)
else
AIEntityGoToPosition(EntObjNo,g_Entity[e]['x'],g_Entity[e]['z'])
FireWeapon(e)
end
end --state

if GetPlayerDistance(e) < stealth_kill_range and g_Entity[e]['plrvisible'] == 0 then
PromptLocal(e,"Stealth Kill? Press " .. input)
if g_InKey == input and pressed == 0 then
SetEntityHealth(e,0)
SetPlayerHealth(g_PlayerHealth + kill_health_gain)
pressed = 1
end
end

end --main


function stealth_kill_exit(e)
pressed = 0

end