PixelProjectiles by Shadowdarke at BYOND Developers

	PixelProjectiles by Shadowdarke
	Pixel based directional projectiles [More]

Overview Discussion Related | Share Zip

To download this library for your Linux/Mac installation, enter this on your command line:

DreamDownload byond://Shadowdarke.PixelProjectiles##version=3

Emulator users, in the BYOND pager go to File | Open Location and enter this URL:

byond://Shadowdarke.PixelProjectiles##version=3

2200 downloads

Version 3

Date added:	May 10 2005
Last updated:	Jul 29 2009

16 fans

Pixel Projectiles provides a simple interface for customizable directional projectiles that can fire at any angle, speed, and duration between updates and guarantees accurate hits.

Hooks are provided to allow you to define:

how hits are determined.
what happens when the projectile hits an atom.
what happens when the projectile reachs max range without a hit
Also includes a handy proc for spread shots. Fire an even spread or random shrapnel within the cone of fire with one easy proc call.

Version 3: (04-04-2006)
Fixed a bug that caused high velocity projectiles to occasionally miss. Kudos to DarkCampainger for not only noticing it, but also finding the fix! (DarkCampainger, XxDohxX)

Recent BYOND Members

JoeNamath	Teli	Flleeppyy
Puddingtron246	Anongeko	N. Meszaros

Please support BYOND through Membership or a donation!

Comments

Ease: (Mar 14 2013, 12:59 am)

Firstly; Shadowdarke, this is an amazing library. I love it. Truly I do.

Anyway, I have one small suggestion (that I've implemented in to my own game): owner's direction!

FirePixelProjectile(owner, "dir[owner.dir]", /obj/sd_px_projectile/)

proc/FirePixelProjectile(atom/owner, destination, proj_type = \
    /obj/sd_px_projectile)
    /* fires a pixel based projectile of type proj_type from owner to
        destination. Destination may be a turf or angle of fire. */
    if(!owner) return
    var/obj/sd_px_projectile/P = new proj_type()
    P.owner = owner
    P.loc = P.TurfOf(owner)
    P.pixel_x = P.cx
    P.pixel_y = P.cy

    if(istext(destination))
        destination=copytext(destination,4)
        if(destination=="4")      //East
            destination=0
        else if(destination=="5")     //Northeast
            destination=45
        else if(destination=="1")     //North
            destination=90
        else if(destination=="9")     //Northwest
            destination=135
        else if(destination=="8")    //West
            destination=180
        else if(destination=="10")    //Southwest
            destination=225
        else if(destination=="2")    //South
            destination=270
        else if(destination=="6")    //South east
            destination=315
    if(isnum(destination))  // an angle
        P.dx = cos(destination) * P.speed
        P.dy = sin(destination) * P.speed
            
    else if(istype(destination, /atom))
        var
            atom/A = destination
            dx = (A.x - owner.x) * 32 + A.pixel_x - owner.pixel_x
            dy = (A.y - owner.y) * 32 + A.pixel_y - owner.pixel_y
            px_dist = sqrt(dx * dx + dy * dy)
        if(px_dist) // unit vector times P.speed
            P.dx = P.speed * dx / px_dist
            P.dy = P.speed * dy / px_dist
        else    // owner and target in exact same position
            P.Hit(A)
            return P

    else
        world.log << "Invalid destination: FirePixelProjectile([owner], [destination], \
            [proj_type])"
        del(P)
        return

    if(P)
        spawn(P.delay)  // so this proc can return normally
            while(P)
                P.UpdatePosition()
                //if(P && (alert("[P.x]:[P.cx], [P.y]:[P.cy]",,"Ok", "Delete")=="Delete"))
                //  del(P)
                if(P) sleep(P.delay)

    return P

It's not the most elegant; I'm sure something done with the directional bit flags would be a million times better, but I'm still not comfortable using them yet.

The "dir[owner.dir]" bit is so that the proc recognises it as text.

~Ease~

ArchAngel075: (Feb 13 2013, 8:59 am)

(note that any tabs, spaces and indentations are represented by a ">>", one set of two ">" is == one indentation)

Hi I have a suggestion for a further control over the projectile :

I was fiddling with the handling of Hit and found that using a extra variable for a projectile
ie
obj/sd_px_projectile/Bullet

passThrough = 2

Now on Hit(atom/A) i had some small code like :
if(A.density == 1)

if(src.passThrough >= 1)

src.passThrough -= 1
else

del(src)

what this will do is when it enters a dense object it will deduct from passThrough, if passThrough is 0 then it deletes the projectile..

this allows projectiles to pass through dense objects X times. and a value of 0.5 for passThrough will allow only entry into a dense object, but not exit.

-end-

Syntty: (Jun 18 2011, 12:45 pm)

How could you make so that the projectile's icon state changes according to the direction the projectile (arrow in this case) is flying?

Spirit Gun 84: (Feb 13 2011, 3:01 pm)

Very efficient.

[See all]

Related Libraries

Lightning by Rotem12 generates lines, beams or lightning bolts	DMBox2D by Mightymo A port of the popular physics engine for BYOND.	Real-Time Line Effects by Kunark Ever wanted laser beam effects or lightning bolt effects that could be angled to go anywhere you want? With this ...

Beams by Evi of au A system for Beams as seen on Dragon Ball Z!	PixelProjectiles v2.E by Ease An update of Shadowdarke's PixelProjectiles	pixel_projectile by FIREking Pixel Projectiles!

Projectiles by FinalFantasyFreak A tutorial for making BYOND Projectiles.	Projectiles by Bakasensei Homing, straight, and area attack tile based projectiles!

More Libraries by Shadowdarke

STM Checkers by Shadowdarke Full blown checkers minigame in just 32x32 pixels	BigAtom by Shadowdarke 1 Comment Easy and flexible multi-tile atoms	sd_tree by Shadowdarke Navigate lists of datums through a collapsable tree view.

ProcessHTML by Shadowdarke Disable/modify HTML tags or specific attributes of an HTML tag, or even create your own custom tags!	sd_procs by Shadowdarke A collection of general purpose procs I use often in my own projects.	soundtool by Shadowdarke Easy access to all of BYOND 3.5's nifty sound features.

sd_Text by Shadowdarke 1 Comment Display text on any atom! Includes mobile chat balloons and client.screen (HUD) based text/input boxes.	MapText by Shadowdarke Display text directly on the map!	screen_transitions by Shadowdarke This library provides two very simple procs to display fade effects and several demo fade icons.

AtomMerge by Shadowdarke Automerge code from any turf, obj, or mob	sd_window by Shadowdarke Take control of your popup windows!	sd_DynamicAreaLighting by Shadowdarke 12 Comments Fast and easy dynamic lighting

sd_Alert by Shadowdarke 1 Comment A powerful and flexible alternative to the built in alert() proc.	darke_MapMaker by Shadowdarke Customizable random dungeon generator	sd_MapSuite by Shadowdarke 2 Comments A collection of useful map generation tools.

HUDmeter by Shadowdarke A simple library for managing single tile and multi-tile meters on the HUD.	SingleTileMinigameBase by Shadowdarke Base code for a wide variety of minigames that fit within a single 32x32 tile.	SET_Mod by Shadowdarke

RoofLib by Shadowdarke Draw roofs or other area covers that disappear when you enter the area. Supports multiple roofed areas that operate ...

Membership · Terms of Service · Privacy Policy · DMCA · Contact Us