Projectiles

ID:165802
 
Oct 29 2006, 8:20 pm
My first attempt at making a projectile system was of course to make dense objects. Then call Bump() for when they come in contact with something dense, but i also wanted it to pass through other projectiles, so i did something simple like this example

obj
    projectile
        Bump(atom/A)
            if(isobj(A))
                src.loc=A.loc


Which would work if there isn't alot of projectiles at a high rate, but my game has a team system and you can't be hurt by people on your own team. So i want to be able to pass through my team fire without it becoming sluggish which it did, so i scrapped the dense projectile idea.

Now i try to do a different method(seems odd even to me) where I check turf/Entered as my projectile moves along and do a loop through the the turf for mobs,objs, ect. Then del the projectile, apply damage, and ect. Now im in love eveything is working smooth as can be(team mates pass through smoothy). Then i decided to do a accuracy test where I take three guys have them shoot at one spot. Then take another guy(from the other team with inf Hp) then have him walk in the middle of the fire and disappointedly I noticed that some projectiles randomly passed through me.
Well if your still with me and not bored, what would be the best way to go about making a projectile system that has these features. Im not asking for a hand out just direction
or example thanks in advance

1 Pass through your own team mates smoothly
2 Pass through other projectiles smoothly
3 Your own teams able to pass through your fire without it becoming sluggish
4 Accuracy simply hitting the target without having lag or movement allowing it to pass through randomly

Oct 29 2006, 8:44 pm
One way I've used when I wanted projectiles to pass through is override Move() for your projectiles (using non-dense objects), and after calling the parent, check the bullets location for anyone (or anything) it may possibly hit. As far as not hitting teammates, a simple check would take care of that. For the accuracy, and bullets missing sometimes, just add a prob() check. Don't forget to check and make sure it's not actually hitting something dense (like a wall, or a trashcan for instance) otherwise it'll just fly across the map indefinitely, and could error out when it reaches the end of the map.
Oct 29 2006, 8:50 pm
Lemme see...

mob/var/list/team = new //team variable
mob/verb/Fire() //Shoot!
    var/obj/projectile/O = new/obj/projectile(src.loc)//C'mere!
    O.owner = src //I own you
    walk(O,src.dir,O.delay) //Go!
obj/projectile
    var
        damage = 5 //damage for projectile
        delay = 1 //bigger delay, more slowness
        owner = null //owner variable
    New()
        ..()
        spawn(10) //Lets wait a second
            if(src) //If I'm still here..
                del(src) //Delete me!
    Bump(atom/A) //CRASH
        if(ismob(A))
            var/mob/M = A //set a mob variable as the atom hit so it has mob vars
            var/mob/Z = src.owner //Set owner as a variable
            if(M == Z) //Just in case you hit yourself...
                return //then STOP... and wiggle wit it.
            if(M in Z.team) //if person hit is on your team
                src.loc = M.loc //just keep swimming.. just keep swimming,swimming,swimming
            else
                M.hp -= src.damage //ouch hurt them!
                del(src) //delete projectile
                if(M.hp <= 0) //Are they dead? NOooOOooo
                    M.Death() //Call your death proc or whatever
        else if(istype(A,/obj/projectile/)) //Hit another projectile?
            src.loc = A.loc //Just keep swimming... just keep swimming.. ok you know it
        else //Not a mob or a projectile?
            del(src) //Delete it then!


Try that.. it fires.. I tested that much lol didn't test the team thing and hitting other projectiles
Oct 29 2006, 9:21 pm
In response to Detnom
Thanks Detnom ill look into overiding Move() and see what i can come up with i hope it works. VcentG thanks, but ill already have a similar system and the problem is when you teammates bunched up or get in a line it become sluggish if you try to pass there line of fire, even with the projectiles only moving there loc.

Dont be shy continue to post other ideas, im looking to make the best system i can
Oct 29 2006, 9:24 pm
In response to Solee
I took Vcents and cleaned it up, because I couldn't stand seeing that code there. Terrible for people to use, because it would die in many ways, and has alot of things to fix. Here's the fixed up version, made my way:
mob/var/list/team = new
mob/proc/Damage(Damage as num)
    if(!Damage) return
    src.health-=Damage
    if(src.health<1) src.Death() //self explanatory

mob/verb/Fire()
    var/obj/projectile/O = new/obj/projectile(usr.loc,usr)
obj/projectile
    var
        damage = 5
        delay = 1
        mob/owner
    New(Loc,mob/Owner)
        if(!Owner) return
        owner=Owner
        ..()
        dir=Owner.dir
        walk(src,dir,delay)
        spawn(10) del(src)
    Move()
        ..()
        var/turf/T=loc
        if(!T||T.density) del src
        for(var/obj/O in T) if(O.density) del src
        for(var/mob/M in T)
            if(M==owner||M in owner.team) continue
            if(prob(25)) continue
            M.Damage(damage)
            del src
Oct 29 2006, 10:27 pm
In response to Detnom
Weeeeell, best not to give perfect codes or people just copy and paste and say "Yay, I added it!" when its "Yay, I copied what he did and put it in my game".. but whatever works right? lol
Oct 30 2006, 8:36 am (Edited on Oct 30 2006, 8:44 am)
In response to VcentG
Sigh sadly overiding Move() has the same effect as Entered(). I notice its only when you walk towards the projectiles that they randomly pass through you or if you move back in forth rapidly, which kinda puts you in Limbo with what turf you are on I guess. Looks like my only option is to slow down rate of fire, which is something i really don't want to do unless someone knows how to fix my problem.