Lua Programming Help Thread

Zitat:

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Zitat von vettefan

can someone tell we what's wrong with this please?
I tried making a quick game as a joke and It won't work.
I read quick guide and built it around what it said, and whenever I try launching it in luaplayer it says that there is no script file found. I tried saving it as both script.lua and index.lua. any help appreciated.

Code:

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pimppicture=Image.load("pics/pimp.png")
kidpicture=Image.load("pics/kid.png")
mom=Image.load("pics/mom.png")
background=Image.load("pics/background.png")
winner=Image.load("pics/winner.png")
loser=Image.load("pics/loser.png")
distance=nul
timer=1
pimp=430
kid=300
while true do
timer=1
screen:clear()
pad=Controls.read()
        if pad:cross() then
        kid=kid-2
        end
kid=kid-.5
pimp=pimp-.5
        if kid=40 then
                while timer=1
                pad=Controls.read()
                screen:blit(0, 0, winner)
                screen.flip()
                        if pad:cross() then
                        timer=2
                        end
                end
        end
distance=kid+30
        if pimp=distance then
                while timer=1
                pad=Controls.read()
                screen.blit(1, 1, loser)
                screen.flip()
                        if pad:cross() then
                        timer=2
                        end
                end
        end
        screen.blit(0, 0, background)
        screen.blit(0, 100, mom)
        screen.blit(kid, 100, kidpicture)
        screen.blit(pimp, 100, pimppicture)
        screen.flip()
end

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I wanted to make it so that you had to press the cross button really fast to move the kid over to the "mom" befoe the pimp catches him and shanks him.

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HAve you tried it on the PSP and PC? Anywhy, where it says distance=nul, nul is supposed to be nil. And all the screen.blit's are supposed to be screen:blit.

screen.blit is supposed to be screen:blit() aswell

Zitat:

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Zitat von Vaza

screen.blit is supposed to be screen:blit() aswell

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Beat me to it. ;)

Zitat:

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Zitat von PSPduh

Beat me to it. ;)

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HAHA :P :razz:

Hi, i whas refered the Music bundled somthing but counld find can somone help me out find how to make a scrolling game EX: mario

U mean a scrolling BG?

No i really mean like PspSoldier and everything the background stay the same but the level advance exactly like mario.

can any1 help me out? i need to know how to center mmy text depending on how many characters the text has. heres my code without the questions(variables) ;)

Code:

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i=1
while i<=13 do
    screen:clear()
    screen:print(80, 100, questions[i], blue)
    screen:print(150, 200, answerOne[i], white)
    screen:print(150, 215, answerTwo[i], white)
    screen:print(150, 230, answerThree[i], white)
    screen:print(150, 245, answerFour[i], white)
    inputreceived=0
    screen.flip()
    screen.waitVblankStart() 
    while inputreceived==0 do
        pad = Controls.read()

        if pad:down() then
          screen.flip()
          if correctanswer[i]==1 then
              screen:print(150, 110, "You're Correct!", green)
          else
              screen:print(150, 110, "Sorry, incorrect.", red)
              i=0
          end
          inputreceived=1
        end
       
        if pad:right() then
          screen.flip()
          if correctanswer[i]==2 then
              screen:print(150, 110, "You're Correct!", green)
          else
              screen:print(150, 110, "Sorry, incorrect.", red)
              i=0
          end
          inputreceived=1
        end
       
        if pad:left() then
          screen.flip()
          if correctanswer[i]==3 then
              screen:print(150, 110, "You're Correct!", green)
          else
              screen:print(150, 110, "Sorry, incorrect.", red)
              i=0
          end
          inputreceived=1
        end
       
        if pad:up() then
          screen.flip()
          if correctanswer[i]==4 then
              screen:print(150, 110, "You're Correct!", green)
          else
              screen:print(150, 110, "Sorry, incorrect.", red)
              i=0
          end
          inputreceived=1
        end
    end
    i = i+1
    screen.flip()
screen.waitVblankStart(120)
end

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Well... I do not know what is WRONG with your code, but the width of each characeter, if im not mistaken is around 5pixels, and the height is around 10 pixels. I may right a prototype for just that...itll count how many characters are in the string, and for every 1 characeter, itll add '5' to a varaible that will be divied into 2 then retrun an integer to teh newly created and centered X varaible... but in C since LUA functions cnanot return an integer via a function?

8 in height and also 8 in width I believe. And why would LUA not be able to return an integer from a function? You can always do it indirect. First put the integer in a variable in the function itself and then use that.