Burning Enemies

By Postal

Intermediate

Several times I have been asked how to make a weapon set someone on fire.  So instead of continuing to shrug off these people, I have decided to make a tutorial.  This code was given to me by Necron_99 and its quite simple so this is what I’m sharing with you, I doubt that Necron would mind. 

First of all, we will make a projectile that will stick to the person and hurt them.

//===============================================
// BurnerProj.
//===============================================

class BurnerProj expands Projectile; 

var float HurtTime;
var float LifeTime;  //how long it lives

Function Tick(float deltatime)
{             
                HurtTime+=deltatime;
                LifeTime-=deltatime;     

                if (HurtTime>0.3)
                {
                           //Hurt the target
                           Base.TakeDamage(Damage,Instigator,Location,Vect(0,0,0),'Burned');                            HurtTime=0;
                           // Basically ever .3 deltatime this hurts some one
                }             

                if ((LifeTime<0)||(Base==None))
                {
                                Destroy(); //When its life is up, it dies
                }
} 

defaultproperties
{
     Damage=5.000000  // How much damage it does
     Mesh=LodMesh'UnrealShare.FlameM'  // What it looks like
     bUnlit=True
}

If for instance you were making a poison gas grenade, or poison arrow, you could always change the damage type and remove not use that mesh. 

Now we need this projectile to be attached to the person.

 So in the projectile add:

simulated function ProcessTouch (Actor Other, Vector HitLocation)
{
local BurnerProj AnOther,FinalBurn;

if ( Other.Isa('Pawn')) // If the targets a pawn(bot, player, monster, etc.)
{
//This makes sure a person is only set on fire once

foreach AllActors(class'BurnerProj',AnOther)
            {
                           If (AnOther.Base==Other)
                                                FinalBurn=AnOther;
             }

//If that person not already on fire

If (FinalBurn==None)
            {
                //Make the fire
                FinalBurn=Spawn(class'BurnerProj',Instigator,,Other.Location,Other.Rotation)

                //Set if to have a life time of 1(good for flame-thrower, but if you 
                //are making a incendiary arrow, or so forth, crank it up to something like 5

    FinalBurn.LifeTime=1.0;

    // Attaches the fire to the target

   FinalBurn.SetBase(Other);
             }
            else
            {
                   // If the target already on fire, make the fire last longer.
                   FinalBurn.LifeTime+=5.0;
             }

}
}

Hope this helps your pyromaniac urges.