[Question] SDKtools Trace

[SamuraiBarbi]

How do I use TR_GetEntityIndex(Handle:hndl=INVALID_HANDLE) ; ?

I assume this can be used in some very interesting and creative ways. I'm trying to use it in a hooked weapon_fire event to find out what the player is looking at. I've tried testing it using the following code but it just prints out 0.


new Handle:target;
TR_GetEntityIndex(target);
PrintToChatAll("%i",target);


Am I correct in assuming TR_GetEntityIndex will return another players index if the person shooting is looking directly at them? Also, why isn't this working as intended?

[IceMatrix]

Not at all!!

You do a ray-trace, either with TR_TraceRay or with another ray tracing functions that returns you a handle.

After that you call TR_GetEntityIndex either with the default value (no argument) or with the handle returned by the complex ray tracing functions. TR_GetEntityIndex will return you the entity index hit by the ray (if any).

Example:

decl Float:pos[3], Float:angles[3];
GetClientEyePosition( client, pos );
GetClientEyeAngles( client, angles );

TR_TraceRay( pos, angles, MASK_SOLID_BRUSHONLY, RayType:RayType_Infinite );

new target = TR_GetEntityIndex();
if( target >= 0 )
{
/* hit something */
}
else
{
/* didn't hit anything */
}

[dubbeh]

not done anything with trace rays in hl2. but i think it might be for if a trace line hits an entity to get the entity index that it hit need to run a trace ray first to find out if the player is looking at an entity done ^ ;)

[Nican]

My plugin spray tracer use TraceRay, if you need to learn how to use it :O

[SamuraiBarbi]

Not at all!!

You do a ray-trace, either with TR_TraceRay or with another ray tracing functions that returns you a handle.

After that you call TR_GetEntityIndex either with the default value (no argument) or with the handle returned by the complex ray tracing functions. TR_GetEntityIndex will return you the entity index hit by the ray (if any).

Example:

decl Float:pos[3], Float:angles[3];
GetClientEyePosition( client, pos );
GetClientEyeAngles( client, angles );

TR_TraceRay( pos, angles, MASK_SOLID_BRUSHONLY, RayType:RayType_Infinite );

new target = TR_GetEntityIndex();
if( target >= 0 )
{
/* hit something */
}
else
{
/* didn't hit anything */
}


OMG, thanks! That got me on the right path.