[little_froy]

here is my code, I want to implement a function to detect if a player is visible to another player.

bool is_visible_to(int client, int target)
{
    float self_pos[3];
    float target_pos[3];
    float look_at[3];
    float vec_angles[3];
    GetClientEyePosition(client, self_pos);
    GetClientEyePosition(target, target_pos);
    MakeVectorFromPoints(self_pos, target_pos, look_at);
    GetVectorAngles(look_at, vec_angles);
    Handle trace = TR_TraceRayFilterEx(self_pos, vec_angles, MASK_VISIBLE, RayType_Infinite, trace_entity_filter, target);
    bool result = TR_DidHit(trace) && TR_GetEntityIndex(trace) == target;
    delete trace;
    return result;
}

bool trace_entity_filter(int entity, int contentsMask, any data)
{
    if(entity == data)
    {
        return true;
    }
    if(entity > 0 && entity <= MaxClients)
    {
        return false;
    }
    char class_name[PLATFORM_MAX_PATH];
    GetEntityClassname(entity, class_name, sizeof(class_name));
    return strcmp(class_name, "infected") != 0 && strcmp(class_name, "witch") != 0 && strncmp(class_name, "prop_dynamic", 12) != 0 && strncmp(class_name, "func_breakable", 14) != 0;
}

I found that issue, the glass(map c11m1_greenhouse, classname "prop_physics", image attached below) did hit the trace, but there is no survivor glow, so it's "visible" but my function return false. how can I filter something such like this?

Note:
I tried L4D2_IsVisibleToPlayer in left4dhooks, it can't meet my needs cause when someone are not alive and spectating another one, the "eye position" not follow.

[Lux]

You wanna not include CONTENTS_WINDOW in your trace mask,
Never really used MASK_VISIBLE macro, I just build own.

[Lux]

I looked again at my trace filter code, I used this

PHP Code:

GetEntProp(iEntity, Prop_Data, "m_iEFlags")) & (1<<25) 


to filter entity glass like that EFL_DONTBLOCKLOS

[little_froy]

Originally Posted by Lux I looked again at my trace filter code, I used this PHP Code: GetEntProp(iEntity, Prop_Data, "m_iEFlags")) & (1<<25)  to filter entity glass like that EFL_DONTBLOCKLOS

thank you so much.
it works, but also filter doors