ai_soldier_pathindex = {}
ai_path_point_direction = {}
ai_patrol_x = {}
ai_patrol_z = {}
ai_path_point_index = {}
ai_path_point_max = {}
ai_soldier_state = {}
ai_old_hp = {}
local temproty = {}
local atk_anim_s = {}
local atk_anim_e = {}
local last_atk_frame = {}
local last_atk_frame = {}
local hit_player = {}
local melee_anim = {}
local max_hp = {}
local found_cover = {}
local coverx = {}
local covery = {}
local coverz = {}
local startx = {}
local starty = {}
local startz = {}

local fire_range = 1500
local attack_range = 90
local damage_min = 15 --for melee
local damage_max = 25

local idle_anim = 5
local walk_unarmed_anim = 29
local run_unarmed_anim = 31
local hurt_anim = 160 --combat roll
local stealth_run_anim = 181
local walk_armed_anim = 103
local run_armed_anim = 115
local throw_grenade_anim = 129 
local sit_anim = 68
local stand_sit_anim = 72
melee_anim[1] = 97
melee_anim[2] = 100
local kneel_aim_anim = 155 --or 81?
local stand_kneel_anim = 203 --also needed from combat roll 
local stand_aim_anim = 79


local walk_speed = {}
local run_speed = {}

function ai_classiccharacter_scifi_init(e)
	AISetEntityTurnSpeed(AIObjNo,2500)
	ai_soldier_state[e] = "idle"
	CharacterControlManual(e)
	StopAnimation(e)
	SetCharacterSoundSet(e)	
	ai_soldier_pathindex[e] = -1
	walk_speed[e] = 80
	run_speed[e] = 120
end 

function ai_classiccharacter_scifi_main(e)
	if max_hp[e] == nil then
		ai_old_hp[e] = g_Entity[e]['health']
		max_hp[e] = g_Entity[e]['health']
		startx[e] = GetEntityPositionX(e)
		starty[e] = GetEntityPositionY(e)
		startz[e] = GetEntityPositionZ(e)
		found_cover[e] = nil 
		return
	end 
	AIObjNo = g_Entity[e]['obj']
	PlayerDist = GetPlayerDistance(e)
	if PlayerDist < 2500 then 
		if ai_soldier_state[e] == "idle" then 
			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 < 200 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
			ai_path_point_direction[e] = 1
			ai_path_point_max[e] = AIGetPathCountPoints(ai_soldier_pathindex[e])
		 end   
		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])
		 
		 if g_Entity[e]['animating'] ~= 2 then 
			StopAnimation(e)
			SetAnimation(walk_unarmed_anim)
			PlayAnimation(e)
			g_Entity[e]['animating'] = 2 
		 else 
			AIEntityGoToPosition(AIObjNo,ai_patrol_x[e],ai_patrol_z[e])
			MoveForward(e,walk_speed[e]*0.8)
		 end 
		 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
		else 
			if g_Entity[e]['animating'] == 0 or g_Entity[e]['animating'] ~= 1 then 
				StopAnimation(e)
				SetAnimation(idle_anim)
				PlayAnimation(e)
				g_Entity[e]['animating'] = 1 
			end 			
		end
			
			if g_Entity[e]['plrvisible'] == 1 or PlayerDist < AIGetEntityViewRange(AIObjNo)/3 or AIGetEntityHeardSound(AIObjNo) == 1 or g_Entity[e]['health'] < ai_old_hp[e] then 
				ai_soldier_state[e] = "alert"
				PlaySoundIfSilent(e,1)
			end 
		elseif ai_soldier_state[e] == "alert" then 
			
			if PlayerDist > fire_range or g_Entity[e]['plrvisible'] == 0 then 
				if g_Entity[e]['animating'] ~= 4 then 
					StopAnimation(e)
					SetAnimation(run_armed_anim)
					PlayAnimation(e)
					g_Entity[e]['animating'] = 4 
				else 
					temproty[e] = 15-(PlayerDist/100)
					if temproty[e] < 6 then 
						temproty[e] = 6
					end 
					AISetEntityTurnSpeed(AIObjNo,temproty[e]*20)
					AIEntityGoToPosition(AIObjNo,g_PlayerPosX,g_PlayerPosY,g_PlayerPosZ)		
					MoveForward(e,run_speed[e])
					FireWeapon(e)
				end 
			elseif PlayerDist > fire_range * 0.5 then 
				if g_Entity[e]['animating'] ~= 5 then 
					StopAnimation(e)
					SetAnimation(walk_armed_anim)
					PlayAnimation(e)
					g_Entity[e]['animating'] = 5
				else 
					temproty[e] = 15-(PlayerDist/100)
					if temproty[e] < 6 then 
						temproty[e] = 6
					end 
					AISetEntityTurnSpeed(AIObjNo,temproty[e]*20)
					AIEntityGoToPosition(AIObjNo,g_PlayerPosX,g_PlayerPosY,g_PlayerPosZ)		
					MoveForward(e,walk_speed[e])
					FireWeapon(e)
				end 
			elseif PlayerDist > attack_range then 
				AIEntityGoToPosition(AIObjNo,GetEntityPositionX(e),GetEntityPositionY(e),GetEntityPositionZ(e))
				RotateToPlayer(e)
				if g_Entity[e]['animating'] ~= 6 then 
					StopAnimation(e)
					SetAnimation(stand_aim_anim)
					PlayAnimation(e)
					g_Entity[e]['animating'] = 6 
				else
					RotateToPlayer(e)
					FireWeapon(e)
				end 
			elseif PlayerDist <= attack_range then 
				RotateToPlayer(e)
				if g_Entity[e]['animating'] ~= 9 then 
					StopAnimation(e)
					temp = math.random(1,2)
					SetAnimation(melee_anim[temp])
					PlayAnimation(e)
					last_atk_frame[e] = GetEntityAnimationFinish(e,melee_anim[temp])
					hit_player[e] = 0
					g_Entity[e]['animating'] = 9 
				else 
					if GetAnimationFrame(e) >= last_atk_frame[e]-15 and GetAnimationFrame(e) <= last_atk_frame[e]-1 and hit_player[e] == 0 then 
						HurtPlayer(e,math.random(damage_min,damage_max))
						hit_player[e] = 1 
					end 
					--if GetAnimationFrame(e) >= last_atk_frame[e]-1 and GetAnimationFrame(e) <= last_atk_frame[e] then 	
				end 
			end
			
			if g_Entity[e]['health'] < ai_old_hp[e] then 
				ai_soldier_state[e] = "roll"
				ai_old_hp[e] = g_Entity[e]['health'] * 0.5 
			end 
			if g_Entity[e]['health'] < max_hp[e]*0.5 then 
				if found_cover[e] == nil then 
					CoverIndex = -1
					 pClosest = 1999
					 for ca = 1, AIGetTotalCover(), 1 do
						pDX = GetEntityPositionX(e) - AICoverGetPointX(ca)
						pDZ = GetEntityPositionZ(e) - AICoverGetPointZ(ca)
						--pDist = math.sqrt(math.abs(pDX*pDX)+math.abs(pDY*pDY)+math.abs(pDZ*pDZ));
						covDist = math.sqrt((pDX*pDX)+(pDZ*pDZ));
						if covDist < pClosest and covDist < 1500 then
							pClosest = covDist
							CoverIndex = ca
							coverx[e] = AICoverGetPointX(ca)
							coverz[e] = AICoverGetPointZ(ca)
							covery[e] = GetTerrainHeight(coverx[e],coverz[e])
						end
					 end
					 if CoverIndex > -1 then
						tdx = GetEntityPositionX(e) - g_PlayerPosX
						tdz = GetEntityPositionZ(e) - g_PlayerPosZ
						tbotdd = math.sqrt ( (tdx*tdx) + (tdz*tdz) )
						tdx = AICoverGetPointX(CoverIndex) - g_PlayerPosX
						tdz = AICoverGetPointZ(CoverIndex) - g_PlayerPosZ
						tcoverdd = math.sqrt ( (tdx*tdx) + (tdz*tdz) )
						if pClosest < PlayerDist or (pClosest > PlayerDist and tcoverdd > pClosest) then
						else
						 CoverIndex = -1
						end
					 end 
					 found_cover[e] = CoverIndex
					if found_cover[e] > 0 then
						found_cover[e] = 0
						ai_soldier_state[e] = "run to cover"
						StartTimer(e)
					end 
				end 
			end 
		elseif ai_soldier_state[e] == "run to cover" then 
			coverdist = GetDistanceToPoint(e,coverx[e],coverz[e])
			if coverdist > 62 then --and AICouldSee(AIObjNo,coverx[e],covery[e],coverz[e]) == 1 then 
				if g_Entity[e]['animating'] ~= 9 then 
					StopAnimation(e)
					SetAnimation(stealth_run_anim)
					PlayAnimation(e)
					g_Entity[e]['animating'] = 9 
				else 
					temproty[e] = 15-(coverdist/100)
					if temproty[e] < 6 then 
						temproty[e] = 6 
					end 
					AISetEntityTurnSpeed(AIObjNo,temproty[e]*20)
					AIEntityGoToPosition(AIObjNo,coverx[e],covery[e],coverz[e])
					MoveForward(e,run_speed[e]*1.3)
					FireWeapon(e)
				end 
			else 
				if found_cover[e] == 0 then 
					StartTimer(e)
					found_cover[e] = 1 
				elseif GetTimer(e) > 1100 then 
					found_cover[e] = nil 
					SetEntityHealth(e,max_hp[e])
					ai_old_hp[e] = g_Entity[e]['health']
					ai_soldier_state[e] = "alert"
				elseif g_Entity[e]['plrvisible'] == 1 or PlayerDist < attack_range*1.2 then 
					ai_soldier_state[e] = "alert"
					found_cover[e] = nil 
				end
			end 
					
		elseif ai_soldier_state[e] == "roll" then 
			if g_Entity[e]['animating'] ~= 7 then 
				StopAnimation(e)
				SetAnimation(hurt_anim)
				PlayAnimation(e)
				g_Entity[e]['animating'] = 7 
				ai_soldier_state[e] = "roll2"
			end 
		elseif ai_soldier_state[e] == "roll2" then 
			if g_Entity[e]['animating'] == 0 then 
				if PlayerDist > attack_range and PlayerDist < fire_range and g_Entity[e]['plrvisible'] == 1 then 
					ai_soldier_state[e] = "fire crouched"
				else
					ai_soldier_state[e] = "get up from crouch"
				end 
			else 
				AIEntityGoToPosition(AIObjNo,g_PlayerPosX,g_PlayerPosY,g_PlayerPosZ)
				MoveForward(e,walk_speed[e])
			end 
		elseif ai_soldier_state[e] == "fire crouched" then 
			RotateToPlayer(e)
			FireWeapon(e)
			if PlayerDist < attack_range then 
				ai_soldier_state[e] = "melee"
			elseif PlayerDist > fire_range or g_Entity[e]['plrvisible'] == 0 then 
				ai_soldier_state[e] = "get up from crouch"
			end 
		elseif ai_soldier_state[e] == "get up from crouch" then 
			if g_Entity[e]['animating'] ~= 8 then 
				StopAnimation(e)
				SetAnimation(stand_kneel_anim)
				PlayAnimation(e)
				g_Entity[e]['animating'] = 8
				ai_soldier_state[e] = "get up from crouch2"
			end 
		elseif ai_soldier_state[e] == "get up from crouch2" then 
			if g_Entity[e]['animating'] == 0 then 
				ai_soldier_state[e] = "alert"
			end 	
		end 
		if g_PlayerHealth < 1 then 
			ai_classiccharacter_scifi_init(e)
			AIEntityGoToPosition(AIObjNo,startx[e],starty[e],startz[e])
		end
		if found_cover[e] ~= nil then 
			--PromptLocal(e,found_cover[e])
		end
		SetRotation(e,0,AIGetEntityAngleY(AIObjNo),0)
		AISetEntityPosition(AIObjNo,GetEntityPositionX(e),GetEntityPositionY(e),GetEntityPositionZ(e))
	elseif GetTimer(e) > 500 then 
		StartTimer(e)
		ai_classiccharacter_scifi_init(e)
	end 
end 

function ai_classiccharacter_scifi_exit(e)

end 

function GetDistanceToPoint(e,x,z)
	if g_Entity[e] ~= nil and g_Entity[e] ~= 0 then
		local disx = g_Entity[e]['x'] - x
		local disz = g_Entity[e]['z'] - z
		return math.sqrt(disx^2 + disz^2)
	end
end