-- LUA Script - precede every function and global member with lowercase name of script

 local ps1 = {}
 local nn1 = {}
-- init when level first runs
function ai_pedestrian_init(e)
 ps1[e] = 0
 nn1[e] = 0
 
 ai_soldier_state[e] = "patrol";
 ai_soldier_pathindex[e] = -1;
 ai_start_x[e] = nil
 ai_starting_heath[e] = nil
 ai_ran_to_cover[e] = 0
 ModulateSpeed(e,1.0)
 ai_old_health[e] = 0
 CharacterControlStand(e)
 ai_returning_home[e] = 0
 ai_newdest_time[e] = -1
 ai_cover_on[e] = 0
 ai_alerted_spoken[e] = 0	
 SetCharacterSoundSet(e)
end


function ai_pedestrian_main(e)
 CharacterControlUnarmed(e)
 -- Death Animation
 if ai_soldier_state[e] ~= "deathanim" then
 
 -- Detect player distance (note: possible optimization here)
 PlayerDX = g_Entity[e]['x'] - g_PlayerPosX;
 PlayerDY = g_Entity[e]['y'] - g_PlayerPosY;
 PlayerDZ = g_Entity[e]['z'] - g_PlayerPosZ;
 PlayerDist = math.sqrt(math.abs(PlayerDX*PlayerDX)+math.abs(PlayerDY*PlayerDY)+math.abs(PlayerDZ*PlayerDZ));
 
 -- Entity Object Number
 EntObjNo = g_Entity[e]['obj'];

 -- Handle health
 if ai_starting_heath[e] == nil then
	ai_starting_heath[e] = g_Entity[e]['health']
 end
  
 -- Store starting point so we can return there if player moves far away
 if ai_start_x[e] == nil then
	ai_start_x[e] = g_Entity[e]['x']
	ai_start_z[e] = g_Entity[e]['z']
	AISetEntityControl(EntObjNo,AI_MANUAL);
 end
 
 -- Patrol Mode
 if ai_soldier_state[e] == "patrol" then
 
  -- Try and find a close path to patrol, just check once for it
  if ai_soldier_pathindex[e] == -1 then
   ai_soldier_pathindex[e] = -2
   CharacterControlArmed(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,0.7)
	SetCharacterToWalk(e)
	ai_path_point_direction[e] = 1
	ai_path_point_max[e] = AIGetPathCountPoints(ai_soldier_pathindex[e])
   end   
  end
  
  -- Force character as unarmed
  CharacterControlUnarmed(e)
  
  -- If set to head home, lets go there
  if   ai_returning_home[e] == 1 then
    tDistX = g_Entity[e]['x'] - ai_start_x[e];
    tDistZ = g_Entity[e]['z'] - ai_start_z[e];
	DistToStart = math.sqrt(math.abs(tDistX*tDistX)+math.abs(tDistZ*tDistZ))
	if DistToStart < 200 or GetTimer(e) > ai_combat_state_delay[e] then
		ai_soldier_pathindex[e] = -1
		SetCharacterToWalk(e)
		CharacterControlUnarmed(e)
		AIEntityStop(EntObjNo);
		ModulateSpeed(e,1.0)
		ai_returning_home[e] = 0
		ai_soldier_state[e] = "alerted"
		ai_alerted_mode[e] = 0
	else
		AIEntityGoToPosition(EntObjNo,ai_start_x[e],ai_start_z[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(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
  else
		--wander code
  if PlayerDist < 70 and ps1[e] == 0 then
		AIEntityStop(EntObjNo);
		RotateToPlayer(e)
		LookAtPlayer(e)
		CharacterControlFidget(e)
		Prompt("What do you want?")
		  PlaySound(e,1)
		  ps1[e] = 1
		  if GetTimer(e) >4000 then
		  tempangle = math.random(6.28)
			tempx = g_Entity[e]['x']+(math.cos(tempangle)*400);
			tempz = g_Entity[e]['z']+(math.sin(tempangle)*400);
			AIEntityGoToPosition(EntObjNo,tempx,tempz)
			StartTimer(e)
		  end
		  else
		if PlayerDist > 80 then
            ps1[e] = 0
		end			
		
		if GetTimer(e)>5500 and nn1[e] == 0 then --timer value to tel ai when to change to next x and z pos.
			 			
			tempangle = math.random(6.28)
			tempx = g_Entity[e]['x']+(math.cos(tempangle)*400);
			tempz = g_Entity[e]['z']+(math.sin(tempangle)*400);
			AIEntityGoToPosition(EntObjNo,tempx,tempz)
			StartTimer(e)
			
		end
		
		end
			tDistX = g_Entity[e]['x'] - ai_start_x[e];
			tDistZ = g_Entity[e]['z'] - ai_start_z[e];
			DistToStart = math.sqrt(math.abs(tDistX*tDistX)+math.abs(tDistZ*tDistZ))
			
		if PlayerDist > 2000 then  ------------------------------------------- increase this value to roam far away
		CharacterControlFidget(e)
		Prompt("I'm to Far away ")
		AIEntityGoToPosition(g_Entity[e]['obj'],g_PlayerPosX,g_PlayerPosZ) -----use this line for going to player 
		--AIEntityGoToPosition (EntObjNo,ai_start_x[e],ai_start_z[e])----------- use  this line to go to start point
		CharacterControlFidget(e)
		nn1[e] = 1
		end
		if PlayerDist < 1000 and GetTimer(e)>5500  then -- this line tels ai not to walk not to close to player when they return.
		Prompt("I'm to close")
		nn1[e] = 0
		end
		
		
		end
     
 end
  
 if string.find(string.lower(g_Entity[e]['limbhit']), "head") ~= nil then
  ai_soldier_state[e] = "deathanim"
  PlayCharacterSound(e,"onDeath")
  StartTimer(e)
  CharacterControlLimbo(e)
  BulletRayDX = g_Entity[e]['x'] - g_PlayerPosX;
  BulletRayDY = g_Entity[e]['y'] - g_PlayerPosY;
  BulletRayDZ = g_Entity[e]['z'] - g_PlayerPosZ;
  BulletAngle = (math.atan2(BulletRayDX,BulletRayDZ)/6.28)*360
  BulletAngle = BulletAngle + g_Entity[e]['angley']
  if BulletAngle < 0 then
   BulletAngle = BulletAngle + 360
  end
  if BulletAngle >= 360 then
   BulletAngle = BulletAngle - 360
  end
  if BulletAngle >= 360 then
   BulletAngle = BulletAngle - 360
  end
  --Prompt ( BulletAngle )
  if BulletAngle >= 360-45 or BulletAngle <= 0+45 then
   SetAnimationFrames(5031,5050) 
   SetAnimationFrame(e,5031)
  end
  if BulletAngle >= 180-45 and BulletAngle <= 180+45 then
   SetAnimationFrames(4972,5002) 
   SetAnimationFrame(e,4972)
  end
  if BulletAngle >= 90-45 and BulletAngle <= 90+45 then
   -- side hit animations not aligned for this technique (yet)
   SetAnimationFrames(4972,5002) 
   SetAnimationFrame(e,4972)
  end
  if BulletAngle >= 270-45 and BulletAngle <= 270+45 then
   -- side hit animations not aligned for this technique (yet)
   SetAnimationFrames(4972,5002) 
   SetAnimationFrame(e,4972)
  end
  PlayAnimation(e)
  ModulateSpeed(e,1.0)
  SetAnimationSpeed(e,1.5)
 end

 else --DeathAnim Else

  -- wait until death anim mostly over, then switch to ragdoll
  if GetTimer(e)>200 then
   SetEntityHealth(e,0)
   BulletRayDX = g_Entity[e]['x'] - g_PlayerPosX;
   BulletRayDY = g_Entity[e]['y'] - g_PlayerPosY;
   BulletRayDZ = g_Entity[e]['z'] - g_PlayerPosZ;
   SetEntityRagdollForce(e,g_Entity[e]['limbhitindex'],BulletRayDX,BulletRayDY,BulletRayDZ,750)
   ResetLimbHit(e)
  end
  
 end --DeathAnim Endif
 
 -- Debug prompt 
 --if ai_soldier_state[e] ~= nil and ai_combat_mode[e] ~= nil and g_Entity[e]['angley'] ~= nil then
 -- Prompt( ai_soldier_state[e] .. " mode=" .. ai_combat_mode[e] .. " angley=" .. g_Entity[e]['angley'] )
 --else
 -- Prompt( "angley=" .. g_Entity[e]['angley'] ) 
 --end
 
end


function ai_loopnet_exit(e)
 if ai_soldier_state[e] ~= "deathanim" then
  PlayCharacterSound(e,"onDeath")
 end
end