[Solved] in_view_cone of entity

Celena Luna · **Author**

I tried to detect if player is in front of the entity.
I used in_view_cone & distance to check. The distance was fine but in_view_cone didn't detect player.

PHP Code:


			
public Spawn_NPC(id)

{

    new szModelPath[64], team

    formatex(szModelPath, sizeof(szModelPath) - 1, "models/Z_Files/Zombies/%s.mdl", g_Zombie_Model[0])



    static entid; entid = engfunc(EngFunc_CreateNamedEntity, engfunc(EngFunc_AllocString, "info_target"))

    if(!pev_valid(entid)) return

    new Float:VEC_HULL_MIN[3] = {-15.0, -9.0, -36.0}

    new Float:VEC_HULL_MAX[3] = {15.0, 9.0, 28.0}



    set_pev(entid, pev_classname, NPC_ZOMBIE)

    engfunc(EngFunc_SetModel, entid, szModelPath)

    set_pev(entid, pev_modelindex, ZombieModelIndex[Class])



    engfunc(EngFunc_SetSize, entid, VEC_HULL_MIN, VEC_HULL_MAX)

    

    set_pev(entid, pev_iuser1, STATE_IDLE)

    set_pev(entid, pev_angles, NPC_Angle[0])

    set_pev(entid, pev_v_angle, NPC_VAngle[0])



    set_pev(entid, pev_movetype, MOVETYPE_PUSHSTEP)



    set_pev(entid, pev_solid, SOLID_BBOX)



    set_pev(entid, pev_origin, NPC_Origin[0])

    //set_pev(entid, pev_angles, g_Item_Angle[item_type])



    set_pev(entid, pev_animtime, get_gametime())

    set_pev(entid, pev_framerate, 1.0)

    set_pev(entid, pev_sequence, 0)

    set_pev(entid, pev_nextthink, get_gametime() + 0.01)

}



public Zombie_Think(ent)

{

    if(!pev_valid(ent))

        return FMRES_IGNORED



    new Float:fOrigin[3], Float:fVicOrigin[3], Float:distance

    pev(g_PlayerID, pev_origin, fVicOrigin) //it is single player so g_PlayerID = id on spawn

    pev(ent, pev_origin, fOrigin)



    distance = get_distance_f(fOrigin, fVicOrigin)    

    new bRunning = get_xvar_num(g_pRunning)



    if(distance < 270.0 && !is_wall_between_points(fOrigin, fVicOrigin, 0))

    {

        if(bRunning)

        {

            client_print(g_PlayerID, print_center, "Detected")

            set_pev(ent, pev_iuser1, STATE_ATTACK)

        }

        else 

        {

            if(fm_is_in_viewcone(ent, fVicOrigin))

            {

                client_print(g_PlayerID, print_center, "Detected")

                set_pev(ent, pev_iuser1, STATE_ATTACK)

            }

            else 

            {

                client_print(g_PlayerID, print_center, "Stand by...")    

            }

        }

    }    

    //else

    //    client_print(g_PlayerID, print_center, "Stand by...")        

        set_pev(ent, pev_nextthink, get_gametime()+1.0)

    }

}



stock is_wall_between_points(Float:start[3], Float:end[3], ignore_ent)

{

    static ptr

    ptr = create_tr2()



    engfunc(EngFunc_TraceLine, start, end, IGNORE_MONSTERS, ignore_ent, ptr)

    

    static Float:EndPos[3]

    get_tr2(ptr, TR_vecEndPos, EndPos)



    free_tr2(ptr)

    return floatround(get_distance_f(end, EndPos))

}

I want to make it only detect when player go in eye sight of it or running close to it.

+ARUKARI- · 07-03-2020 , 03:41 Re: in_view_cone of entity

How about using fm_is_visible?

Celena Luna · 07-03-2020 , 04:13 Re: in_view_cone of entity

Quote:

Originally Posted by +ARUKARI-

How about using fm_is_visible?

Also didn't work
I did change V_Angle => ViewOffset to test it. (I get my ViewOffset data to set for NPC, not just change V_Angle to ViewOffset)

**Bugsy** · 07-03-2020 , 11:45 Re: in_view_cone of entity

in_view_cone() + visible check should be enough.

Have you confirmed the correct 2 player variables are used to get the origins?

Natsheh · 07-03-2020 , 11:58 Re: in_view_cone of entity

TIP : when you're using is_wall_between_points in zombie think set the third Param the zombie entity index to ignore the zombie otherwise it might give you always false results. Since also when you're creating the zombie you dont give him the monster flag.

Celena Luna · 07-03-2020 , 12:23 Re: in_view_cone of entity

Quote:

Originally Posted by Bugsy

in_view_cone() + visible check should be enough.

Have you confirmed the correct 2 player variables are used to get the origins?

i used this to get data

PHP Code:


			
public clcmd_origin(id)
{
    static Float:fOrigin[3], Float:fAngle[3], iEyeOrigin[3]
    get_user_origin(id, iEyeOrigin, Origin_Eyes)
    pev(id, pev_origin, fOrigin)
    pev(id, pev_angles, fAngle)
    server_print("Eye Origin: %i.0, %i.0, %i.0", iEyeOrigin[0], iEyeOrigin[1], iEyeOrigin[2])
    server_print("Origin: %0.1f, %0.1f, %0.1f", fOrigin[0], fOrigin[1], fOrigin[2])
    server_print("Angle: %0.1f, %0.1f, %0.1f", fAngle[0], fAngle[1], fAngle[2])

    pev(id, pev_view_ofs, fAngle)    
    server_print("View Offset: %0.1f, %0.1f, %0.1f", fAngle[0], fAngle[1], fAngle[2])

    pev(id, pev_v_angle, fAngle)    
    server_print("View Angle: %0.1f, %0.1f, %0.1f", fAngle[0], fAngle[1], fAngle[2])

    client_print(id, print_chat, "[Console] Origin Saved. Check Console")
}

and get this result

Code:

Eye Origin: 1698.0, 2137.0, -1907.0
Origin: 1698.7, 2137.0, -1924.9
Angle: -0.5, -92.8, 0.0
View Offset: 0.0, 0.0, 17.0
View Offset: 1.6, -92.8, 0.00

and the data I got at that position that I want to use is

PHP Code:


			
new const Float:NPC_Origin[][3] = 
{
    {1707.0, 2154.0, -1924.9}

}

new const Float:NPC_Angle[][3] =
{
    {-2.3, -89.0, 0.0}
}

new const Float:NPC_VAngle[][3] =
{
    {1.6, -92.8, 0.0}
}

new const Float:NPC_ViewOfs[][3] =
{
    {0.0, 0.0, 17.0}
}

PHP Code:


			
public Spawn_NPC(id)
{
    ...

    set_pev(ent, pev_angles, NPC_Angle[0])
    set_pev(ent, pev_view_ofs, NPC_VAngle[0])
    set_pev(ent, pev_v_angle, NPC_ViewOfs[0])

    ...
}

public Zombie_Think(ent)
{
    ....

    pev(g_PlayerID, pev_origin, fVicOrigin)
    pev(ent, pev_origin, fOrigin)
    
    if(bRunning)
    {
        if(distance < 270.0)
            set_pev(ent, pev_iuser1, STATE_ATTACK)
    }
    else 
    {
        if(fm_is_visible(ent, fVicOrigin) && fm_is_in_viewcone(ent, fVicOrigin) && !is_wall_between_points(fOrigin, fVicOrigin, 0))
            client_print(0, print_center, "Detected")
    }

    ...    
}

I tried but it still didn't work didn't work. I walk in front of it, nothing happened
is_wall_between_points work normally because of my previous code, it did not dectect when I behind object.

Quote:

Originally Posted by Natsheh

TIP : when you're using is_wall_between_points in zombie think set the third Param the zombie entity index to ignore the zombie otherwise it might give you always false results. Since also when you're creating the zombie you dont give him the monster flag.

The zombie I used have flags FL_MONSTER and FL_MONSTERCLIP so I think I should put it as 0 (I updated it later on, adding those flags)

**Bugsy** · *Last edited by Bugsy; 07-03-2020 at 12:27.*

Is bRunning definitely false?
g_PlayerID and ent are the correct player ID's?

Did you identify which of fm_is_visible(), fm_is_in_viewcone, and is_wall_between_points() is not working as expected?

Celena Luna · 07-03-2020 , 12:33 Re: in_view_cone of entity

Quote:

Originally Posted by Bugsy

Is bRunning definitely false?
g_PlayerID and ent are the correct player ID's?

Did you identify which of fm_is_visible(), fm_is_in_viewcone, and is_wall_between_points() is not working as expected?

because it is like single player mode so I just store it in g_PlayerID so it easier to use. I get the id from ham spawn post and tried at other part, it work normally so I don't think it is the reason

bRunning was false at that time, when I run, the zombie did change state and chase. So it is nothing wrong with bRunning

is_wall_between_points work normally because of my previous code, it did not dectect when I behind object.

both fm_is_visble and fm_is_in_viewcone didn't work when I tested it previously. Either separated and together

**Bugsy** · *Last edited by Bugsy; 07-03-2020 at 12:43.*

Try something like this to identify specifically what is not returning as expected

Code:

public Zombie_Think(ent)
{
    ....

    pev(g_PlayerID, pev_origin, fVicOrigin)
    pev(ent, pev_origin, fOrigin)
    
    new szName[ 32 ] 
    get_user_name( g_PlayerID , szName , charsmax( szName ) );
    server_print( "Is running? %d" , bRunning )
    server_print( "Is %s visible to ent %d? %d" , szName , ent , fm_is_visible(ent, fVicOrigin) )
    server_print( "Is %s in ent %d's viewcone? %d" , szName , ent , fm_is_in_viewcone(ent, fVicOrigin) )
    server_print( "Is wall between ent %d origin and %s? %d" , ent , szName , is_wall_between_points(fOrigin, fVicOrigin, 0) )
    server_print( "" )    
    if(bRunning)
    {
        if(distance < 270.0)
            set_pev(ent, pev_iuser1, STATE_ATTACK)
    }
    else 
    {
        if(fm_is_visible(ent, fVicOrigin) && fm_is_in_viewcone(ent, fVicOrigin) && !is_wall_between_points(fOrigin, fVicOrigin, 0))
            client_print(0, print_center, "Detected")
    }

    ...    
}

Celena Luna · 07-03-2020 , 12:52 Re: in_view_cone of entity

Code:

Is running? 0
Is Celena Luna visible to ent 563? 0
Is Celena Luna in ent 563's viewcone? 0
Is wall between ent 563 origin and Celena Luna? 0

Code:

Is running? 0
Is Celena Luna visible to ent 563? 0
Is Celena Luna in ent 563's viewcone? 0
Is wall between ent 563 origin and Celena Luna? 0

Code:

Is running? 0
Is Celena Luna visible to ent 563? 0
Is Celena Luna in ent 563's viewcone? 0
Is wall between ent 563 origin and Celena Luna? 119

The last one I just try for fun but it is work... so weird

Code:

Is running? 0
Is Celena Luna visible to ent 563? 1
Is Celena Luna in ent 563's viewcone? 0
Is wall between ent 563 origin and Celena Luna? 0

Sorry if the image is too dark

Edit:
For running function testing:

Code:

Is running? 1
Is Celena Luna visible to ent 563? 0
Is Celena Luna in ent 563's viewcone? 0
Is wall between ent 563 origin and Celena Luna? 0