Gravity....

[greeno]

Hello, I am making a gravity room for my guild house and I was wondering why my script makes people go through objects.... basically I have it make the playery subtract one every .05 seconds, and if the up arrow is pushed, then they go up, but for some reason it makes them go through tiles... I remember doing this with an older version of graal and it worked fine. Did stefan/unixmad change that in a later release?

And I would like to know if anyone can help me
this is my code....

// NPC made by Stipo Swift -Leader- (Turtles)
if (created) {
falling = true;
}

while (falling==true)
{
playery = playery + 1;
sleep .05;
if (keydown(A))
{
playery = playery - 2;
if (playery > 60)
{
playery = playery - 2;
}
}
}

any suggestions?

[Riot]

erm, keydown(A)?

Also you need to do onwall checks to stop it from going on walls.

Please look into another way of doing this.

[greeno]

well thats why I am here, to find out other ways of doing it, I'm not a professional :P

[Dach]

Originally posted by greeno
I have it make the playery subtract one every .05

but for some reason it makes them go through tiles...

think about that for a second, you're script moves the player regardless if there is a blocking tile there or not

and keydown needs a number argument, its in the commands.rtf (the list on the left in the offline script editor)

[greeno]

ok, thank you, like I said i'm new to this.

and I was wondering if you could get an NPC to say a variable...
like the playerx and playery variables... I've been looking through the list and so far I have nothing....

[Dach]

use #v(variablehere) in the message, those parseing things are at the end, their not incredibly straight forward so you just have to experiment with them more to figure them out

[greeno]

ok, thanks... one more question for tonight, will
if (onwall(playerx,playery)) work for this situation?

[ZeroTrack]

you need to detect if the player has hit a wall or come to an object that is set to block the player using onwall command, also use if(keydown2(keycode(a),false)) or if(keydown(5)) if ya wanna be nubish about it

[Dach]

the position (playerx,playery) is at the top lefthand corner of the player, use playerx+1.5,playery+2 it's not exact (playery+1.96875 is right) but there is hardly a difference so it doesn't matter

onwall is a function

ack, I just noticed, don't use a while loop for that, use a timeout

[Ningnong]

timeout would also fix that delay you've got with the sleep. Also, get into the habbit of using this:

NPC Code:

---

playery -= 2;

playery += 1;

---

etc, it looks alot neater :]

[TB3]

I would like to see the gravity script from g2k1 and how it was done it worked rather smoothly than most I have seen .
I made one but its a little buggy going up

[-Ramirez-]

Originally posted by Dach
(playery+1.96875 is right)

...yeah, if pixels are capable of being divided by two. A pixel is 0.0625 tiles, not 0.03125 tiles.

[Dach]

Originally posted by -Ramirez-

...yeah, if pixels are capable of being divided by two. A pixel is 0.0625 tiles, not 0.03125 tiles.

Aren't odd numbers wonderous? :grin:

try it out before jumping to conclusions next time, say something in this level, one of the npcs calculates the middle of the player

[-Ramirez-]

Originally posted by Dach
try it out before jumping to conclusions next time, say something in this level, one of the npcs calculates the middle of the player

There's nothing to try out. :grin:

It's simply not possible to get more accurate than a pixel. If you use something like that in any onwall check or whatever, Graal is going to round it some way or another.

[Dach]

Originally posted by -Ramirez-

There's nothing to try out. :grin:

It's simply not possible to get more accurate than a pixel. If you use something like that in any onwall check or whatever, Graal is going to round it some way or another.

Look, lets say you have an odd number, 3. You need to find the middle of that number, so you do 3/2 which is 1.5, correct? Guess what, an odd number of pixels is going to do the same thing.

It's not like i'm proposing the use of such numbers, I did say to use 2. Granted I didn't notice that the number was in the middle of a pixel untill you said something, but it's not like I'm wrong.