[Ugleh]

About
Pyro Knockback gives Pyros the ability to knockback from air/compression blasts, which not only could save them from a tall fall but also gives them a double jump effect.

The Pyro can only blast off of objects/entities, it can not just blast off of air, preventing flying.

Video
http://www.youtube.com/watch?v=PTLeaJK8s8Y

Cvars
sm_pk_enable - (def "1") <0/1> Enable PK.
sm_pk_d - (def "-250") <-10/-20/-30/etc> Amount of Push Distance, Negative is pushed, Positive is Pulled.
sm_pk_dr - (def "150")<60/120/180/etc> Required distance of entity to push off of.

Chat Command
!pyro - Toggles the knockback for the client who entered the command.

Custom Airblast Cost Cvars
If your server has custom airblast costs instead of the default Flamethower 20, backburner 50, then these cvars need to be set. -1 means they are not in use.
This does not set the airblast cost, it is meant for an exception to see if the player has enough ammo to airblast.

sm_pk_backburner - -1
sm_pk_flamethrower - -1
sm_pk_degreaser - -1

sm_pk_d
This ConVar changes the actual push distance, if you want to get pushed further you will make the number lower, i.e -1000 would push you to the skyboxes roof on most maps, while -250 seams about right for a compression blast.

sm_pk_dr
You can't just shoot the air and assume your going to get pushed, or shoot the water in 2fort and assume you can glide over it. There is a distance between you and the entity/object you are looking at. The normal distance between you airblasting a person is 150, so thats what I set it to, and it looks good to me.

[xomp]

Nice idea, though it isn't much use for the pyro if they are running and decide to compression blast jump since this plugin causes the pyro to loose ALL momentum.

[Ugleh]

Originally Posted by xomp Nice idea, though it isn't much use for the pyro if they are running and decide to compression blast jump since this plugin causes the pyro to loose ALL momentum.

Im new to sourcemod, would their be a way to fix this?
I could probably make it so users can turn it on or off.

[Pawn 3-pg]

Untested, but this should work to keep the pyro's momentum when airblasting.

PHP Code:

stock Blast(client)
{
    new Float:vector[3];    
    new Float:lookingloc[3];
    new Float:clientloc[3];
    new Float:angles[3];
    new Float:current_velocity[3];
    
    //Changing this to the client location.
    GetClientEyePosition( client, clientloc );
    GetClientEyeAngles( client, angles );
    
    new Handle:trace = TR_TraceRayFilterEx( clientloc, angles, MASK_PLAYERSOLID_BRUSHONLY, RayType_Infinite, TraceEntityFilterPlayers, client );
    if(!TR_DidHit( trace ) )
    {
    return
    }
  TR_GetEndPosition( lookingloc, trace );
    CloseHandle(trace);
    
    //No need to get the client abs origin since you already have the eye position.
    //GetClientAbsOrigin(client, clientloc);
    
    //These two lines can be replaced with GetAngleVectors
    //MakeVectorFromPoints(clientloc, lookingloc, vector);
    //NormalizeVector(vector, vector);
    GetAngleVectors(angles, vector, NULL_VECTOR, NULL_VECTOR);
    NegateVector(vector); //change it from the forward vector to a backward vector
    
    //Add the player's current speed to blast vector
    GetEntPropVector(client, Prop_Data, "m_vecVelocity", current_velocity);
    AddVectors(current_velocity, vector, vector)
    
    ScaleVector(vector, GetConVarFloat(c_Distance));
    new TheDistance;
    TheDistance= RoundToNearest(GetVectorDistance(lookingloc, clientloc));
    if(TheDistance < GetConVarInt(c_DistanceRequired)){
        TeleportEntity(client, NULL_VECTOR, NULL_VECTOR, vector);
        
    }    
} 


Also, you were using the eye angles to determine where the blast force was coming from, but then using the abs origin to determine the direction the push happens. If you are standing against a wall looking down at the bottom of the wall, the blast should knock you into the air, but since the blast point is higher than the abs origin, it would have tried to push you into the ground. Aiming at a spot on the floor in front of you will push you directly backwards. Using the eye position for both will fix this.

[Ugleh]

Originally Posted by Pawn 3-pg Untested, but this should work to keep the pyro's momentum when airblasting.

that doesn't work, it wont let the pyro blast into the air, ill look at the code to see if i could fix it though.

[xomp]

/home/groups/alliedmodders/forums/files/6/2/9/0/9/85461.attach::OnPlayerRunCmd() L 05/03/2011 - 11:18:54: [SM] Native "GetEntProp" reported: Entity -1 (-1) is invalid L 05/03/2011 - 11:18:54: [SM] Displaying call stack trace for plugin "PyroKnockback.smx": L 05/03/2011 - 11:18:54: [SM] [0] Line 72,

Spammed about 200 billion times in my logs.

[Ugleh]

Originally Posted by xomp Spammed about 200 billion times in my logs.

thats weird, i had exceptions for the client so i assume its the weapon id.
Well I did just update it with a new feature and hopefully a fix of your error.

[Tylerst]

new weapon2 = GetEntPropEnt(client, Prop_Send, "m_hActiveWeapon");

new weapon2 = GetEntPropEnt(client, Prop_Send, "m_hActiveWeapon");
if(!IsValidEntity(weapon2)) return;

Also, add item index 208 somewhere(Upgradeable Flamethrower) else this won't work for anyone with a renamed/custom description normal flamethrower.


and...

if(weapon2 >=0){
}else{

What?

[Ugleh]

Originally Posted by Tylerst new weapon2 = GetEntPropEnt(client, Prop_Send, "m_hActiveWeapon"); new weapon2 = GetEntPropEnt(client, Prop_Send, "m_hActiveWeapon"); if(!IsValidEntity(weapon2)) return; Also, add item index 208 somewhere(Upgradeable Flamethrower) else this won't work for anyone with a renamed/custom description normal flamethrower. and... if(weapon2 >=0){ }else{ What?

thanks, im new to sourcemod so didn't know about IsValidEntity, ill update it now and add index 208 to the if statement.

Edit:
208 is the custom flamethrower or backburner, and whats the custom other one?

[Tylerst]

Originally Posted by Ugleh thanks, im new to sourcemod so didn't know about IsValidEntity, ill update it now and add index 208 to the if statement. Edit: 208 is the custom flamethrower or backburner, and whats the custom other one?

208 is for custom normal flamethrowers, custom backburner/degreaser use their own indexes

I think they did it because normal items can't use attributes, so they had to add one that does