Graal Forums - Check if a player is on a wall.

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- - Check if a player is on a wall. (https://forums.graalonline.com/forums/showthread.php?t=134263995)

Emera

07-24-2011 02:47 PM

Check if a player is on a wall.

I have searched the wiki about 5 times now and I still can't find the answer to my question. How do I check if a player is on a wall, in other words on a blocked tile like a wall tile or a roof tile? It may sound a little bit weird asking a simple question like this, but I can't find the answer!

Crow	07-24-2011 03:08 PM

PHP Code:


		
			
onwall(float x, float y)

onwall2(float x, float y, float width, float height)

Keep in mind onwall2() uses the same algorithms as the polygons, making it a bit faulty.

Emera

07-24-2011 03:10 PM

Quote:

Originally Posted by Crow (Post 1660133)

PHP Code:


		
			
onwall(float x, float y)

onwall2(float x, float y, float width, float height)

Keep in mind onwall2 uses the same algorithms as the polygons, making it a bit faulty.

player.onwall player.x, player.y?

Crow	07-24-2011 03:13 PM

Quote:

Originally Posted by Emera (Post 1660135)

player.onwall player.x, player.y?

onwall() is not part of the player object. Also, it will only check for a single pixel. Things like onwall(player.x + 1.5, player.y + 2) are common, since that'd be approximately the center of the player's bounding box.

Tricxta

07-24-2011 11:04 PM

Dusty made a killer thread on this kinda stuff :)
http://forums.graalonline.com/forums...hp?t=134258376

Read up and become a wiz =P

Emera

07-28-2011 01:48 PM

I kept playing around, and this is what I got.

PHP Code:


		
			
function onActionServerSide() {
    if (params[0] == "hacker") {
        setlevel2("levelname", x, y); //Action after detection
        echo("[Hack Prevention]: "@player.account@" was caught on a wall."); 
    }
}

//#CLIENTSIDE

function onCreated() {
    this.admins = 
    {"wont be affected by onwall"}; //Won't be affected
    setTimer(0.05); //Starts timer
}

function onTimeout() {
    if (onwall(player.x + 1.5, player.y + 2)) { //Detects if onwall
        triggerserver("gui", this.name, "hacker");
    } else if (player.account in this.admins) return;
    setTimer(1); //Stop RC spam
}

0PiX0

07-28-2011 02:41 PM

You will want to check

Quote:

Originally Posted by Emera (Post 1660702)

PHP Code:


		
			
this.admins = 
    {"wont be affected by onwall"}; //Won't be affected

on the server side.

However, it might be better to set a var on staff such as clientr.staff = 1
That way you won't have to list your admins in each system, you can just check player.clientr.staff

Emera

07-28-2011 02:47 PM

True, it would be easier to make it recognize staff members, but it is more customize able if I can enter staff into a field and have it recognize them there. The idea is a good one though, but unfortunately I am no longer working on this. Thank you 0pix0 anyway.

Crow	07-28-2011 04:55 PM

Not a good way to check for wall hackers, and there are quite a few flaws in your code.

cbk1994

07-28-2011 10:50 PM

Quote:

Originally Posted by Emera (Post 1660706)

It should be done on serverside even if you use an array. As a general rule for writing secure code, assume that anything you write on clientside can be edited by any player.

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