Firing multiple projectiles from weapons?

[ZestyLemons]

Hi, just started to get into a little modding. I thought a fun and easy first project would be a modding the shotgun to actually fire several projectiles, instead of one giant one. I tried for a while, but I couldn't find any modding material on getting a weapon to fire 2+ projectiles in the same tick.


Here's what I tried (damage/warmup/etc values are no where near balanced, was just messing around):

Code Select Expand


<ThingDef ParentName="BaseGun">
<defName>Gun_12GShotgun</defName>
<label>12G Shotgun</label>
<description>A 12 gauge shotgun, perfect for putting several nasty holes through its target.
</description>
<texturePath>Things/Item/Equipment/Shotgun</texturePath>
<soundInteract>InteractShotgun</soundInteract>
<tradersCarry>True</tradersCarry>
<basePrice>60</basePrice>
<verb>
<projectileDef>Bullet_Pistol</projectileDef>
<warmupTicks>120</warmupTicks>
<range>40</range>
      <accuracyTouch>1</accuracyTouch>
      <accuracyShort>0.95</accuracyShort>
      <accuracyMedium>0.80</accuracyMedium>
      <accuracyLong>0.70</accuracyLong>
        <ticksBetweenBurstShots>0</ticksBetweenBurstShots>
<burstShotCount>9</burstShotCount>
<fireSound>ShotShotgun</fireSound>
</verb>
</ThingDef>


I thought using burstshots tag with 0 ticks would give me a cheaty way to fire many projectiles at once, but it seems to clamp it to one tick/not work the way I want. Burst shots also makes the shotgun sound play several times in a row, which makes the gun sound really odd when it fires.

Is there a way to get weapons that fire multiple projectiles?

[RawCode]

Not possible without custom assembly.

Sample mod attached to message.
Source

Code Select Expand


   public class ProjectileHook
    {
        public Projectile target2;
        public ThingDef type;
        private IntVec3 source;
        public bool canFreeIntercept = false;

        public ProjectileHook(ThingDef type, IntVec3 source)
        {
            this.type = type;
            this.source = source;
        }

        internal void Launch(Thing thing, Vector3 drawPos, TargetPack targetPack)
        {

        for (int i = 0; i < 30; i++)
{
                target2 = (Projectile)ThingMaker.MakeThing(type);
                GenSpawn.Spawn((Thing)target2, source);
                target2.canFreeIntercept = canFreeIntercept;
                target2.Launch(thing, drawPos, targetPack);
}
        }
    }

    public class Caerbannog_Gun : Verb_Shoot
    {
        protected override bool TryShotSpecialEffect()
        {
            ShootLine shootLine;
            if (!this.TryFindShootLineFromTo(this.owner.Position, this.currentTarget, out shootLine))
                return false;
            Vector3 drawPos = this.owner.DrawPos;
            ProjectileHook projectile = new ProjectileHook(this.verbProps.projectileDef,shootLine.source);
            float num = this.verbProps.forcedMissRadius;
            float horizontalSquared = (this.currentTarget.Loc - this.owner.Position).LengthHorizontalSquared;
            if ((double)horizontalSquared < 9.0)
                num = 0.0f;
            else if ((double)horizontalSquared < 25.0)
                num *= 0.5f;
            else if ((double)horizontalSquared < 49.0)
                num *= 0.8f;
            if ((double)num > 0.5)
            {
                int index = UnityEngine.Random.Range(0, GenRadial.NumCellsInRadius(this.verbProps.forcedMissRadius));
                if (index > 0)
                {
                    IntVec3 intVec3 = this.currentTarget.Loc + GenRadial.RadialPattern[index];
                    projectile.canFreeIntercept = true;
                    projectile.Launch(this.owner, drawPos, (TargetPack)intVec3);
                    return true;
                }
            }
            HitReport hitReport = this.HitReportFor(this.currentTarget);
            if ((double)UnityEngine.Random.value > (double)hitReport.TotalNonWildShotChance)
            {
                shootLine.ChangeDestToMissWild();
                projectile.canFreeIntercept = true;
                projectile.Launch(this.owner, drawPos, (TargetPack)shootLine.dest);
                return true;
            }
            else if ((double)UnityEngine.Random.value > (double)hitReport.HitChanceThroughCover && this.currentTarget.Thing != null && this.currentTarget.Thing.def.eType == EntityType.Pawn)
            {
                Thing thing = hitReport.covers.RandomBlockingCoverWeighted();
                projectile.canFreeIntercept = true;
                projectile.Launch(this.owner, drawPos, new TargetPack(thing));
                return true;
            }
            else
            {
                if (this.currentTarget.Thing != null)
                    projectile.Launch(this.owner, drawPos, new TargetPack(this.currentTarget.Thing));
                else
                    projectile.Launch(this.owner, drawPos, new TargetPack(shootLine.dest));
                return true;
            }
        }
    }


Special Caerbannog Pistol can be spawned with creative tools, that gun will shot 30 projectiles in narrow cone.

[attachment deleted by admin: too old]

[ZestyLemons]

Thanks! Luckily I know a little C#, hopefully I can learn a little about the Rimworld assembly too.

Edit:

Results! Thanks so much for the example code.
Here's a screenie with low bullet speed/low warm up to demonstrate the shotgun spread:



Took a little messing around to get shotgun spread working, but it works pretty well.
Thanks again.

[Somz]

I was just about to ask for the same kind of help, but hearing of this C# is kinda destroyed the mood, I know nothing of it, I can hardly mod an xml. (ಥ﹏ಥ)
This mod thing, "Special Caerbannog Pistol can be spawned with creative tools, that gun will shot 30 projectiles in narrow cone.", where could I find it?

[RawCode]

modding is not for everyone, it's ok if you dont understand c# or dont know where is creative tools

[Bog]

I was just about to ask for the same kind of help, but hearing of this C# is kinda destroyed the mood, I know nothing of it, I can hardly mod an xml. (ಥ﹏ಥ)
This mod thing, "Special Caerbannog Pistol can be spawned with creative tools, that gun will shot 30 projectiles in narrow cone.", where could I find it?

It's at the very bottom of RawCode's first post. It's called URT.zip.

[ZestyLemons]

I was just about to ask for the same kind of help, but hearing of this C# is kinda destroyed the mood, I know nothing of it, I can hardly mod an xml. (ಥ﹏ಥ)
This mod thing, "Special Caerbannog Pistol can be spawned with creative tools, that gun will shot 30 projectiles in narrow cone.", where could I find it?

Yeah, I was also kinda bummed that the .xml isn't very powerful modding wise. It's kind of annoying having to relaunch/reload Rimworld everytime I wanna tweak some assembly.

[RawCode]

XML allows to change only things specially defined by developer as "changeable".

same with assembly - you can define methods and ever entire classes as dynamic and change them at runtime, but this is not easy and fun.

[Somz]

It's at the very bottom of RawCode's first post. It's called URT.zip.

...It just didn't poke out my eyes... (；一_一)
Thanks!