local alert_range = 500 
local alert_angle = 30 

function prowler_init(e)
ai_soldier_state[e] = "idle"
ai_soldier_pathindex[e] = -1
end 

function prowler_main(e)

	if ai_soldier_state[e] == "idle" then 
		CharacterControlFidget(e)
		RotateToPlayer(e)
		if PlayerLooking(e,alert_range,alert_angle) == 1 or GetPlayerDistance(e) < alert_range*0.8 then 
			ai_soldier_state[e] = "move"
			StopAnimation(e)
		end
	elseif ai_soldier_state[e] == "move" then 
		if ai_soldier_pathindex[e] == -1 then
			ai_soldier_pathindex[e] = -2
			CharacterControlUnarmed(e)
			-- find initial waypoint path to follow
			PathIndex = -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 < 200 then
						pClosest = pDist;
						PathIndex = pa;
					end
				end -- po
			end -- pa
		
			-- follow found path
			if PathIndex > -1 then
				ai_soldier_pathindex[e] = PathIndex;
				ai_path_point_index[e] = 2
				ModulateSpeed(e,1.0)
				SetCharacterToWalk(e)
				ai_path_point_direction[e] = 1
				ai_path_point_max[e] = AIGetPathCountPoints(ai_soldier_pathindex[e])
			end   
		-- If we have a path then lets patrol it
		elseif 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(g_Entity[e]['obj'],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
						Destroy(e)
					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
						Destroy(e)
					end		
				end
			end

		end 
	end --state 


end --main(e)

function prowler_exit(e)

end 

-----
--extra functions
function PlayerLooking(e,dis,v)
if g_Entity[e] ~= nil then
if dis == nil then
dis = 3000
end
if v == nil then
v = 0.5
end
if GetPlayerDistance(e) <= dis then
local destx = g_Entity[e]['x'] - g_PlayerPosX
local destz = g_Entity[e]['z'] - g_PlayerPosZ
local angle = math.atan2(destx,destz)
angle = angle * (180.0 / math.pi)

if angle <= 0 then
angle = 360 + angle
elseif angle > 360 then
angle = angle - 360
end
while g_PlayerAngY < 0 or g_PlayerAngY > 360 do
if g_PlayerAngY <= 0 then
g_PlayerAngY = 360 + g_PlayerAngY
elseif g_PlayerAngY > 360 then
g_PlayerAngY = g_PlayerAngY - 360
end
end
local L = angle - v
local R = angle + v
if L <= 0 then
L = 360 + L 
elseif L > 360 then
L = L - 360
end
if R <= 0 then
R = 360 + R
elseif R > 360 then
R = R - 360
end

if (L < R and math.abs(g_PlayerAngY) > L and math.abs(g_PlayerAngY) < R) then
return 1
elseif (L > R and (math.abs(g_PlayerAngY) > L or math.abs(g_PlayerAngY) < R)) then
return 1
else
return 0
end
else
return 0
end
end
end