Lua Programming Help Thread

[SG57]

I dont know Lua Players exit function... but you sure can cause a purposeful crash, and send you to the XMB.

I also heard 'os.exit()' works.

[Grimfate126]

I dont know Lua Players exit function... but you sure can cause a purposeful crash, and send you to the XMB.

I also heard 'os.exit()' works.

i think u need luaplayer .17dk2 or something like that tho.

[Shadox75]

os.exit exits to xmb. But is there a way to exit to luaplayer?

[Grimfate126]

os.exit exits to xmb. But is there a way to exit to luaplayer?

i think "break" (that only exits your loop, so if u put it in ur main loop, it should exit to luaplayer)

[SG57]

Actually, when Lua Player runs through the entire script, then does it return to Lua Player, or that weird Press STart to restart thing...

So ya, without an ifnite loop, or something stopping it from reaching hte end, then it goes to Lua Player.

[altunozara]

hey how come this doesnt work...??? i want it to make it so when u press cross....you exit the game...

menu = Image.load("menu5.png")
while true do     

     screen:blit(0,0,menu,true)
     screen.waitVblankStart(1)
     screen.flip()

 pad = Controls.read()
       if pad:up() then
            dofile ("menu4.lua")
elseif pad:down() then
           dofile("test.lua")

elsif pad:cross() then
break

end
end

[TeamOverload]

hey how come this doesnt work...??? i want it to make it so when u press cross....you exit the game...

menu = Image.load("menu5.png")
while true do     

     screen:blit(0,0,menu,true)
     screen.waitVblankStart(1)
     screen.flip()

 pad = Controls.read()
       if pad:up() then
            dofile ("menu4.lua")
elseif pad:down() then
           dofile("test.lua")

elsif pad:cross() then
break

end
end

Well what error does it give? Anyways you put elsif, instead of elseif.

[altunozara]

ok well i fixed that...so now its that code...but with elseif...it goes to the thing...but when its time to click x i click x...and nothing happens?

[Access_Denied]

You don't use "break". The only way to exit back to the XMB is "System.Quit()". But this only works in the LuaPlayer Mod by Cools. You can get it at psplua.com

[TheEmulatorGuy]

You don't use "break". The only way to exit back to the XMB is "System.Quit()". But this only works in the LuaPlayer Mod by Cools. You can get it at psplua.com

No, you can use "os.exit()" and it works on all versions of LuaPlayer.

[Access_Denied]

That's news to me. I asked a question about this once, and the only answer I got was System.Quit() with the LuaPlayer mod.

[Glynnder]

os.exit() doesnt do anything for me

[Access_Denied]

OK, I'm making that "game" that I made a thread about yesterday. I have all the movement done. What I want to do is make it so when you press X, it turns that square black. Well, I do an if/then statement, and of course, it stays on, then dissapears when you let go of X. The question I want to know is, how can I make that square stay black? And I don't want something like this:

if pad:cross() then
square_is_black = true
end

if square_is_black == true then
screen:blit(block)
end

If I did this, I would need over 3200 if/then statements. And I really don't want to do that.

[Glynnder]

use a table maybe?

[Access_Denied]

use a table maybe?

What do you mean?

[Twenty 2]

like into an array of black and white tiles.

Tiles = {

wwwwwwwwww
bbbbbbbbbb
wwbwbwbwbw
wbwbwbwbwb
wwwwwwwwww
}

and so on

[Access_Denied]

OK, noob question, how would I change a vaiable from an array like that. For example

array = {
121010010
101010101
101001100
}
How would I change the 2 to a 1?

[Twenty 2]

I think that would be a hard way of doing it lol cuz like a variable you would have to change the whole thing.

[Access_Denied]

Well, does anyone know this. How would you change a variable in a table like this?

table = {}
table[1] = {1,0,1,0,1,1,1,0,1,0,1,1}
table[2] = {1,0,1,0,1,1,1,0,1,0,1,1}
table[3] = {1,0,1,0,1,1,1,0,1,0,1,1}

[Twenty 2]

well each of those is still a variable tho... So you would still have to change the whole variable exept you would only have to do one row at a time.

[Access_Denied]

Well, in a table like this:

table = {8,20,38,49}

I would just have to table[4] = 39 and it would change the value.
Could I just do this

table[3][6] = 0

EDIT: Turns out the above actually does work. I'm going to do that. Thanks for your help though.

[Twenty 2]

Glad i could kinda help lol
I did help u eliminate other processes tho

[Access_Denied]

Yeah, that helped me out. I could have spent hours trying those other ideas.

[jamz1825]

ok is there some kind of code for a magnet effect.

so like when x is pressed object one starts moving torwards object 2

[Access_Denied]

OK, I'll give you an example where object 2 is on the right.

if object1.x < 0bject2.x and pad:cross() then
object1.x = object1.x + 4
end

So if object1 is farther to the left than object 2 and youi press x, then object 1 will start moving to the right.

[jamz1825]

yea i figured that out but i need it work despite where they are
like diagonal and stuff

[Glynnder]

you could create an invisible shape the surronds the one you want to keep the other shape away from and if the other shpae touches the invisible shape then it gets like, glued there?

[jamz1825]

thats not what im tryin to do here ill explain my game, the enemy scrolls left to right on top and i scroll l/r on bottom. i need him to fire at me where ever i am

ill use the magnet effect for the bullet so it draws torwards me

[LMelior]

You just need to expand ARza's code to work in the y direction also. As long as you don't use "elseif," both statements will execute and it will move diagonally.

[jamz1825]

u dont understand, that keeps the bullet paths very limmited

ive already tried it