[Mr. Zero]

Never really been good with all this vector stuff.

I simply want to specify 1 point and then keep all players outside in a certain radius.
Kinda like a force field. When a player gets closer to the point, the stronger the backwards push will be, keeping the player out.

PHP Code:

static PushPlayersAwayFromPoint(const Float:origin[3], const Float:radius)
{
    decl Float:playerOrigin[3];
    decl Float:playerVelocity[3];
    decl Float:resultVel[3];

    for (new client = 1; client <= MaxClients; client++)
    {
        if (!IsClientInGame(client) || !IsPlayerAlive(client)) continue;

        GetClientAbsOrigin(client, playerOrigin);
        if (GetVectorDistance(origin, playerOrigin) > radius) continue;

        GetEntPropVector(client, Prop_Data, "m_vecVelocity", playerVelocity);

        // Insert math done to resultVel in order to push the player away from origin

        TeleportEntity(client, NULL_VECTOR, NULL_VECTOR, resultVel);
    }
} 


[blodia]

point_push. you can use a negative magnitude to makes a blackhole.

[pheadxdll]

You just want to inverse their velocity, but point_push is a good idea.

[Mr. Zero]

How would I go about to inverse the vectors?

[Scone]

To invert a vector you just negate all of the components (i.e. v[0] = -v[0], etc). You can use the NegateVector function to do this automatically.

[Monkeys]

Inversing their velocity would only work if the position you're trying to push from is a line.
If it were a point, you'd also get pushed backwards in a straight line if you were to walk next to the point, but in range.
(As shown in my horrible attempt at ascii drawing)

Initial movement & Changed velocity <-----X ----> O This is the point you're supposed to be pushing away from

[FoxMulder]

This is some unused code I have laying around. I forgot if it worked or not but it looks like I was attaching the point_push to an object. I'm pretty sure it worked cause I remember everyone complaining about their movement being restricted


All you need to do to use this function is pass the entity you want to attach it to along with their targetname.

PHP Code:


public attachPoint_Push(ent, Float:zOffset, String:parentName[])
{
    new point_push = CreateEntityByName("point_push");

    if (IsValidEdict(point_push))
    {
        new Float:pos[3]; 
        GetEntPropVector(ent, Prop_Send, "m_vecOrigin", pos);
        pos[2] += zOffset;
        
        
        
        DispatchKeyValue(point_push, "targetname", "tf2particle");
        DispatchKeyValue(point_push, "parentname", parentName);
        
        ///VALUES
        DispatchKeyValue(point_push, "enabled", "1");
        DispatchKeyValue(point_push, "magnitude", "1000.0");
        DispatchKeyValue(point_push, "radius", "200.0");
        DispatchKeyValue(point_push, "inner_radius", "200.0");
        DispatchKeyValue(point_push, "spawnflags", "8");
        
        DispatchSpawn(point_push);
        
        new iTeam =  GetEntProp(ent, Prop_Data, "m_iTeamNum");
        SetVariantInt(iTeam);
        AcceptEntityInput(point_push, "TeamNum", -1, -1, 0);
        
        SetVariantInt(iTeam);
        AcceptEntityInput(point_push, "SetTeam", -1, -1, 0);
        
        SetVariantString(parentName);
        AcceptEntityInput(point_push, "SetParent", point_push, point_push, 0);
        
        ActivateEntity(point_push);
        AcceptEntityInput(point_push, "TurnOn");
        
        ActivateEntity(point_push);
        AcceptEntityInput(point_push, "Enable");
        
        TeleportEntity(point_push, pos, NULL_VECTOR, NULL_VECTOR);
    }
} 


[AtomicStryker]

Use MakeVectorFromPoints from your 'force' to the player, and then adjust it's lenght (multiply all values by the same factor) to determine strength. Then apply as velocity.