[zeroibis]

I want to try to make smoke that falls instead of rising. I also want to try to parent it to a player.

I am able to make the smoke:

new String:gas_name[128];
    Format(gas_name, sizeof(gas_name), "SpawnGas%i", client);
    new String:originData[64];
    Format(originData, sizeof(originData), "%f %f %f", VectorPos[0], VectorPos[1], VectorPos[2]);
    new String:colorData[64];
    Format(colorData, sizeof(colorData), "%i %i %i", 220, 100, 110);
    new gascloud = CreateEntityByName("env_smokestack");
    DispatchKeyValue(gascloud,"targetname", gas_name);
    DispatchKeyValueVector(gascloud,"Origin", VectorPos);
    DispatchKeyValueFloat(gascloud,"BaseSpread", 15.0);
    DispatchKeyValue(gascloud,"SpreadSpeed", "100");
    DispatchKeyValue(gascloud,"Speed", "50");
    DispatchKeyValueFloat(gascloud,"StartSize", 15.0);
    DispatchKeyValueFloat(gascloud,"EndSize", 25.0);
    DispatchKeyValue(gascloud,"Rate", "200");
    DispatchKeyValue(gascloud,"JetLength", "500");
    DispatchKeyValueFloat(gascloud,"Twist", 5.0);
    DispatchKeyValue(gascloud,"RenderColor", colorData);
    DispatchKeyValue(gascloud,"RenderAmt", "100");
    DispatchKeyValue(gascloud,"SmokeMaterial", "particle/fire.vmt");
    DispatchSpawn(gascloud);
    TeleportEntity(gascloud, VectorPos, NULL_VECTOR, NULL_VECTOR);
    AcceptEntityInput(gascloud, "TurnOn");

However when it comes to parenting the smoke or making it go a different direction I am lost. Here is the valve page for the entity: https://developer.valvesoftware.com/wiki/Env_smokestack

Can I get some help please? My main issue is getting it to go down instead of up.

Thanks!

[strontiumdog]

Try env_steam
https://developer.valvesoftware.com/wiki/Env_steam

[zeroibis]

Originally Posted by strontiumdog Try env_steam https://developer.valvesoftware.com/wiki/Env_steam

I do not see how that does anything differently. I see that the direction for both should be able to be controlled by modifying the Pitch Yaw Roll (Y Z X) but I do not know how to do this.

[blodia]

TeleportEntity(gascloud, VectorPos, VectorAng, NULL_VECTOR);

[zeroibis]

Originally Posted by blodia TeleportEntity(gascloud, VectorPos, VectorAng, NULL_VECTOR);

Will that work when it is parented to another entity?

[blodia]

origin and angles can be changed on parented entites, the vectors are relative to the parents local space, same with m_angRotation/m_vecOrigin. if you want to change the world angles use m_angAbsRotation/m_vecAbsOrigin.

[zeroibis]

So I assume it would look like:

SetEntPropVector(entity, Prop_Send, "m_angRotation", vec);

Then I would just mess around with vec being + or - for each of the 3 vectors until the smoke points down?

Thanks, this already makes things a bit easier to figure out!

[BlueRaja]

DispatchKeyValue(gascloud, "Angles", "180 0 0");