[MBF21] Can I make an actual projectile that travels along the floor?

[ViolentBeetle]

Normal projectiles die when hit the floor. I want it to run along the floor. It's doable by treating it as a chasing monster, but it has its own limits, such as, for example, not being able to contribute to infighting and relying on normal movement.

The closest I got so far is BOUNCES flag, which almost works, but kills projectile if it tries to go up the stairs. FLOAT doesn't seem to help with the stairs either.

 

Edit: I'm making an MBF21 thing not a Decorate thing, so FLOORHUGGER is not an option.

Edited April 24, 2023 by ViolentBeetle

[Burgish]

You want +FLOORHUGGER - for example, this is part of how the Hexen Lightning spell works.

Here's a lil example from my own work, a projectile hits the ground then runs along it spitting fire.

 

Spoiler

ACTOR BHandsBlast
{
Radius 8
    Height 8
    Speed 12
    Scale 0.3
    Damage (1)
    Projectile
    SeeSound "Fwoosh"
    DeathSound "Fwoosh"
    Obituary "%o got Blazed by %k's."
    Damagetype "Fire"
    +RIPPER
    +NODAMAGETHRUST
    States
    {
        Spawn:
        DMFX DEFG 4 bright
        Goto Death
        
        Death:
        DMFX G 0 A_SpawnItemEx("FlamewallShort",0,0,0,20) 
        stop
    }
}

 

ACTOR FlamewallShort
{
    height 32
    radius 6
    renderstyle Translucent
    alpha .9
    scale 2.5
    Projectile
    Speed 15
    damage (1)
    +RIPPER
    +NODAMAGETHRUST
    +FLOORHUGGER
    Damagetype "Fire"
    states
    {
    Spawn:
    FX13 ABCDCBA 3 bright A_SpawnItemEx("Flame",0,0,0,Random(-5, 5),Random(-5, 5),Random(0, 8),0,SXF_ORIGINATOR,25,0)
    Goto Death
    
    Death:
    FX13 A 0
    stop
    }
}

 

[ViolentBeetle]

1 minute ago, Burgish_Nilwert said:

You want +FLOORHUGGER

I really do. Unfortunately, it's not a thing in MBF21.

[Burgish]

Ah, my apologies, read too fast.  I cannot help, but god luck sir!

[MObreck]

While technically floorhugger projectiles aren't supported in mbf21 you can fake it by making a bouncing projectile that falls straight to the ground. One of the new monsters in my upcoming 1.1 release of MEDB uses ground hugging projectile in such a manner.

 

Once the bouncing stops the projectile will roll on the floor. A projectile that drops straight to the ground barely bounces at all.

Edited May 11, 2023 by MObreck

[ViolentBeetle]

2 minutes ago, MObreck said:

While technically floorhugger projectiles aren't supported in mbf21 you can fake it by making a bouncing projectile that falls straight to the ground. One of the new monsters in my upcoming 1.1 release of MEDB uses ground hugging projectile in such a manner.

 

Once the bouncing stops the projectile will roll on the floor. A projectile that drops straight to the ground barely bounces at all.

 

 

Anything I can do to prevent it from dying from hitting a curb though? A projectile that only works on completely flat surface has limited applicability.

[MObreck]

13 minutes ago, ViolentBeetle said:

 

 

Anything I can do to prevent it from dying from hitting a curb though? A projectile that only works on completely flat surface has limited applicability.

 

Sadly I do not believe so. One of the limitations of that work around.

 

Looks like missed part where you already knew that too. Oops.

Edited May 11, 2023 by MObreck