Lua Programming Help Thread

[psphacker12.]

nvm guys i fugured it out

[the undead]

ok how can i make it were this image gos back and fourth?

I want it inserted in this code were the code still works but I cant figure out were to put it

grass = Image.load("grass.png")
player = Image.load("player.png")
flower = Image.load("flower.png")
start = Image. load("start.png")
white = Color.new(255,255,255)
counter = Timer.new()
screenwidth = 480 - player:width()
screenheight = 272 - player:width()

Player = { }
Player[1] = { x = 200, y = 50 }

while true do
pad = Controls.read()
screen:clear()
 counter:start()



screen:clear()
currentTime = counter:time()

if currentTime < 1000 then
screen:print(100,100,"Loading",white)
end
if currentTime > 1000 then
screen:print(100,100,"Loading",white)
end
if currentTime > 2000 then
screen:print(100,100,"Loading.",white)
end
if currentTime > 3000 then
screen:print(100,100,"Loading..",white)
end
if currentTime > 4000 then
screen:print(100,100,"Loading...",white)
end
if currentTime > 5000 then
screen:print(100,100,"Loading....",white)
end
if currentTime > 6000 then
screen:print(100,100,"Loading....Almost done",white)
end
if currentTime > 7000 then
screen:print(100,100,"Loading....Almost done.",white)
end
if currentTime > 8000 then
screen:print(100,100,"Loading....Almost done..",white)
end
if currentTime > 9000 then
screen:print(100,100,"Loading....Almost done...",white)
end
if currentTime > 10000 then
screen:print(100,100,"Loading....Almost done...f",white)
end
if currentTime > 10100 then
screen:print(100,100,"Loading....Almost done...fi",white)
end
if currentTime > 10200 then
screen:print(100,100,"Loading....Almost done...fin",white)
end
if currentTime > 10300 then
screen:print(100,100,"Loading....Almost done...fina",white)
end
if currentTime > 10400 then
screen:print(100,100,"Loading....Almost done...final",white)
end
if currentTime > 10500 then
screen:print(100,100,"Loading....Almost done...finaly",white)
end
if currentTime > 10600 then
screen:print(100,100,"Loading....Almost done...finaly d",white)
end
if currentTime > 10700 then
screen:print(100,100,"Loading....Almost done...finaly do",white)
end
if currentTime > 10800 then
screen:print(100,100,"Loading....Almost done...finaly don",white)
end
if currentTime > 10900 then
screen:print(100,100,"Loading....Almost done...finaly done",white)
end
if currentTime > 12000 then
screen:print(150,110,"Get to the finish line",white)
end
if currentTime > 12100 then
screen:print(150,120,"Lvl. 1",white)
end
if currentTime > 20000 then

counter:stop()
end

--Were grass goes(top)
screen:blit(0,0,grass)
screen:blit(32,0,grass)
screen:blit(64,0,grass)
screen:blit(96,0,grass)
screen:blit(128,0,grass)
screen:blit(160,0,grass)
screen:blit(192,0,grass)
screen:blit(224,0,grass)
screen:blit(256,0,grass)
screen:blit(288,0,grass)
screen:blit(320,0,grass)
screen:blit(352,0,grass)
screen:blit(384,0,grass)
screen:blit(416,0,grass)
screen:blit(448,0,grass)
--More grass(right under top)
screen:blit(0,32,grass)
screen:blit(32,32,grass)
screen:blit(64,32,grass)
screen:blit(96,32,grass)
screen:blit(128,32,grass)
screen:blit(160,32,grass)
screen:blit(192,32,grass)
screen:blit(224,32,grass) 
screen:blit(256,32,grass)
screen:blit(288,32,grass)
screen:blit(320,32,grass)
screen:blit(352,32,grass)
screen:blit(384,32,grass)
screen:blit(416,32,grass)
screen:blit(448,32,grass)
--More grass(third row)
screen:blit(0,64,grass)
screen:blit(32,64,grass)
screen:blit(64,64,grass)
screen:blit(96,64,grass)
screen:blit(128,64,grass)
screen:blit(160,64,grass)
screen:blit(192,64,grass)
screen:blit(224,64,grass) 
screen:blit(256,64,grass)
screen:blit(288,64,grass)
screen:blit(320,64,grass)
screen:blit(352,64,grass)
screen:blit(384,64,grass)
screen:blit(416,64,grass)
screen:blit(448,64,grass)
--forth row
screen:blit(0,96,grass)
screen:blit(32,96,grass)
screen:blit(64,96,grass)
screen:blit(386,96,grass)
screen:blit(416,96,grass)
screen:blit(448,96,grass)
--fith row
screen:blit(0,128,grass)
screen:blit(32,128,grass)
screen:blit(64,128,grass)
screen:blit(96,128,grass)
screen:blit(128,128,grass)
screen:blit(160,128,grass)
screen:blit(192,128,grass)
screen:blit(224,128,grass) 
screen:blit(256,128,grass)
screen:blit(288,128,grass)
screen:blit(320,128,grass)
screen:blit(352,128,grass)
screen:blit(384,128,grass)
screen:blit(416,128,grass)
screen:blit(448,128,grass)
--Sixth row
screen:blit(0,160,grass)
screen:blit(32,160,grass)
screen:blit(64,160,grass)
screen:blit(96,160,grass)
screen:blit(128,160,grass)
screen:blit(160,160,grass)
screen:blit(192,160,grass)
screen:blit(224,160,grass) 
screen:blit(256,160,grass)
screen:blit(288,160,grass)
screen:blit(320,160,grass)
screen:blit(352,160,grass)
screen:blit(384,160,grass)
screen:blit(416,160,grass)
screen:blit(448,160,grass)
--Seventh Row
screen:blit(0,192,grass)
screen:blit(32,192,grass)
screen:blit(64,192,grass)
screen:blit(96,192,grass)
screen:blit(128,192,grass)
screen:blit(160,192,grass)
screen:blit(192,192,grass)
screen:blit(224,192,grass) 
screen:blit(256,192,grass)
screen:blit(288,192,grass)
screen:blit(320,192,grass)
screen:blit(352,192,grass)
screen:blit(384,192,grass)
screen:blit(416,192,grass)
screen:blit(448,192,grass)
--eighth row
screen:blit(0,224,grass)
screen:blit(32,224,grass)
screen:blit(64,224,grass)
screen:blit(96,224,grass)
screen:blit(128,224,grass)
screen:blit(160,224,grass)
screen:blit(192,224,grass)
screen:blit(224,224,grass) 
screen:blit(256,224,grass)
screen:blit(288,224,grass)
screen:blit(320,224,grass)
screen:blit(352,224,grass)
screen:blit(384,224,grass)
screen:blit(416,224,grass)
screen:blit(448,224,grass)
--ninth Row
screen:blit(0,256,grass)
screen:blit(32,256,grass)
screen:blit(64,256,grass)
screen:blit(96,256,grass)
screen:blit(128,256,grass)
screen:blit(160,256,grass)
screen:blit(192,256,grass)
screen:blit(224,256,grass) 
screen:blit(256,256,grass)
screen:blit(288,256,grass)
screen:blit(320,256,grass)
screen:blit(352,256,grass)
screen:blit(384,256,grass)
screen:blit(416,256,grass)
screen:blit(448,256,grass)
--Start
screen:blit(195,45,start)
--Flower paths(around start image)
screen:blit(230,25,flower)
screen:blit(220,25,flower)
screen:blit(210,25,flower)
screen:blit(200,25,flower)
screen:blit(190,25,flower)
screen:blit(180,25,flower)
screen:blit(170,25,flower)
screen:blit(170,30,flower)
screen:blit(170,42,flower)
screen:blit(170,50,flower)
screen:blit(170,60,flower)
screen:blit(170,70,flower)
screen:blit(180,70,flower)
screen:blit(190,70,flower)
screen:blit(200,70,flower)
screen:blit(210,70,flower)
screen:blit(220,70,flower)
screen:blit(230,70,flower)






screen:blit(300,220,flower)






screen:blit(Player[1].x,Player[1].y,player)

if pad:left() and Player[1].x > 0 then
Player[1].x = Player[1].x - 2
end

if pad:right() and Player[1].x < screenwidth then
Player[1].x = Player[1].x + 2
end

if pad:up() and Player[1].y > 0 then
Player[1].y = Player[1].y - 2
end

if pad:down() and Player[1].y < screenheight then
Player[1].y = Player[1].y + 2
end




screen.waitVblankStart()
screen.flip()
end

[Aphonia]

I don't know what you're asking for. If it's AI or animation, specify which and I (or someone else) can help, but for now your code is way too inefficient.

Read this before you continue:
http://evilmana.com/tutorials/lua_tutorial_07.php

What you're looking for there is:

for a = 0, 14 do
for b = 0,8 do
screen:blit(32 * a, 32 * b, grass)
end
end

If you don't understand, there's an explanation in the tutorial.

Also, 'finaly' is spelled with two Ls.

[the undead]

I don't know what you're asking for. If it's AI or animation, specify which and I (or someone else) can help, but for now your code is way too inefficient.

Read this before you continue:
http://evilmana.com/tutorials/lua_tutorial_07.php

What you're looking for there is:

for a = 0, 14 do
for b = 0,8 do
screen:blit(32 * a, 32 * b, grass)
end
end

If you don't understand, there's an explanation in the tutorial.

Also, 'finaly' is spelled with two Ls.

Yes i know that code, but i dont use it because it blits over the text.

and its animation...i have a code right their i just dont know were to put it
-= Double Post =-
and i will fix the finally lol

[Access_Denied]

The undead, you have A LOT of unneeded code. Read this tutorial. It will help you slim all image code down to 5 or 6 lines.

[Grimfate126]

Yes i know that code, but i dont use it because it blits over the text.

and its animation...i have a code right their i just dont know were to put it
-= Double Post =-
and i will fix the finally lol

then all you do, is FISRT blit all the grass stuff, THEN print your text. itll show.

[the undead]

then all you do, is FISRT blit all the grass stuff, THEN print your text. itll show.

I already tried that, but I will try again

[MjW]

Offtopic :
I am not coding or anything, I'm just trying to find some info about a lua game. So excuse my noob questions. Its been a couple of days now but i didn't get any ideas.
So if some lua coders have some spare time please have a look at the thread i started in psp general and give me a more professional opinion about it.
It would be highly appreciated!

The thread with pics and the game is here

[the undead]

Ok im trying to put this code in

Font Font.load(btseps2.ttf)

But it says error:a.lua:3:'=' expected near font

so i put this in instead

Font = Font.load(btseps2.ttf)

but now I get this error:a.lua:3: attempt to index global 'font' a nil value

What is wrong?

[Bronx]

is you path to the font correct? and are you declaring it before you use it?

[the undead]

is you path to the font correct? and are you declaring it before you use it?

yes the path to the file is right(its in the same folder)
and what do you mean declaring it?
right now im just loading it

[yaustar]

ANewFont = Font.load("btseps2.ttf")

[the undead]

ANewFont = Font.load("btseps2.ttf")

Ok thanks, ill try that
-= Double Post =-
I still get the nil value error

[yaustar]

Are you using the latest LuaPlayer?

[the undead]

Are you using the latest LuaPlayer?

yes I am

[yaustar]

Show the line of code you are using now to check if you got the syntax correct.

[the undead]

Show the line of code you are using now to check if you got the syntax correct.

Im starting a program, but i need to test this font

red = Color.new(255, 0, 0)
ANewFont = Font.load("btseps2.ttf")


screen:print(200, 100, "Font test", ANewFont)

screen.flip()
while true do
screen.waitVblankStart()
end

[yaustar]

What Line do you get the error on?
sidenote: You are not meant to use screenrint with fonts, ou would want screen:fontprint(ANewFont , 200, 100, "Font test")

[the undead]

What Line do you get the error on?
sidenote: You are not meant to use screenrint with fonts, ou would want screen:fontprint(ANewFont , 200, 100, "Font test")

ahh i see, ididnt know that...um line 3...let me try that
-= Double Post =-
I used that, i still get that nil value error...line 3

[GuitarGod1134]

-- maze of doom

menu = Image.load("menu.jpeg")
pink = Color.new(255, 0 , 153)
blue = Color.new(0 , 153, 255)
orange = Color.new(255, 102, 0)
gray = Color.new(153, 153, 153)
black = Color.new(0 , 0 , 0)
oldpad = Controls.read()
while true do
pad = Controls.read()
screen:blit(0,0,menu)
screen.print (10, 100, "Press X to Start" green)
screen.print (20, 150, "Maze of Doom created by: GuitarGod1124 also known as GuitarGod1134" orange)
screen:clear()
if pad:cross()then
screen.print (10, 100, "Coming Soon...." orange)
end
screen.flip()
screen.waitVblankStart()
oldpad = pad
end

okay everytime I try to start this it gives me an error saying
Error: SCRIPT.LUA:13: ')' expected near 'green'
Press start to restart

can someone help? At first i thought i didnt flip it on to the on screen buffer but i did. didnt i?

[Macca]

menu = Image.load("menu.jpeg")
pink = Color.new(255, 0 , 153)
blue = Color.new(0 , 153, 255)
orange = Color.new(255, 102, 0)
gray = Color.new(153, 153, 153)
black = Color.new(0 , 0 , 0)
green = Color.new(0,255,0)
oldpad = Controls.read()
while true do
pad = Controls.read()
screen:blit(0,0,menu)
screen.print (10, 100, "Press X to Start", green)
screen.print (20, 150, "Maze of Doom created by: GuitarGod1124 also known as GuitarGod1134", orange)
screen:clear()
if pad:cross()then
screen.print (10, 100, "Coming Soon....", orange)
end
screen.flip()
screen.waitVblankStart()
oldpad = pad
end

Should work, there were a few errors in there, like not putting a comma after some of your arguments, and not defining the color green, but I fixed it up.

[JoeDaStudd]

menu = Image.load("menu.jpeg")
pink = Color.new(255, 0 , 153)
blue = Color.new(0 , 153, 255)
orange = Color.new(255, 102, 0)
gray = Color.new(153, 153, 153)
black = Color.new(0 , 0 , 0)
green = Color.new(0,255,0)
oldpad = Controls.read()
while true do
pad = Controls.read()
screen:clear()
screen:blit(0,0,menu)
screen:print (10, 100, "Press X to Start", green)
screen:print (20, 150, "Maze of Doom created by: GuitarGod1124 also known as GuitarGod1134", orange)
if pad:cross()then
screen:print (10, 100, "Coming Soon....", orange)
end
screen.flip()
screen.waitVblankStart()
oldpad = pad
end

Same as Macca's, except for the screen:clear() needs to be before you screen:blit or screenrint else you'll clear the screen as soon as they are put on.
And Im fairly sure is

screen:blit and screen:print

not

screen.print and screen.blit

.

Correct me if im wrong

[GuitarGod1134]

okay thanks guys
-= Double Post =-
O WOW i had no idea i didnt define green. missed that lol.
im getting a image loading error. where do i put my menu.jpeg?

[JoeDaStudd]

in the same folder as the index.lua. If you put in in another folder then you would have to change

menu = Image.load("menu.jpeg")
to
menu = Image.load("foldername/menu.jpeg")

[GuitarGod1134]

okay thanks

[nathan42100]

There is a link in the stickys

[psphacker12.]

i am having a problem loading this for some reason..

bg = Image.load("background.png")
red = Color.new(255,0,0)
green = Color.new(0,255,0)
white = Color.new(255,255,255)
oldpad = Controls.read()
font = Font.load("visitor.ttf")
font:setPixelSizes(0, 32)

RN0 = math.random(1,3)
RN1 = math.random(1,3)
RN2 = math.random(1,3)

while true do
pad = Controls.read()
if pad:square() then
RN0 = math.random(1,3)
end

if pad:square() then
RN1 = math.random(1,3)
end

if pad:square() then
RN2 = math.random(1,3)
end

screen:fontPrint(font, 165,150, RN0, red)

screen:fontPrint(font, 195,150, RN1, red)

screen:fontPrint(font, 220,150, RN2, red)

elseif (math.random(1,3) > 1) then 
screen:blit(0,0, bg)
screen:fontPrint(font, 10,150, "YOU WON THE JACKPOT!!", green)
end

elseif (math.random(1,3) > 2) then
screen:blit(0,0, bg)
screen:fontPrint(font, 10,150, "YOU WON THE JACKPOT!!", green)
end

elseif (math.random(1,3) > 3) then 
screen:blit(0,0, bg)
screen:fontPrint(font, 10,150, "YOU WON THE JACKPOT!!", green)
end

screen.flip()
screen.waitVblankStart()
oldpad = pad
end

[Bronx]

well you have no screen:clear()

[Altair]

you cant just use elseif. You have to use it like this:

if bla==bla2 then
something
elseif bla~=bla2 then
somethingelse
end

also

if pad:square() then
RN0 = math.random(1,3)
end

if pad:square() then
RN1 = math.random(1,3)
end

if pad:square() then
RN2 = math.random(1,3)
end

can be:

if pad:square() then
RN0 = math.random(1,3)
RN1 = math.random(1,3)
RN2 = math.random(1,3)
end

Another thing, put this in the main loop once and in the beginning:

screen:blit(0,0, bg)

And yeah, you should have "screen:clear()" in your main loop. In the beginning and before the "screen:blit(0,0, bg)".

[psphacker12.]

idk it says you won the jackpot automatically when i start the game.. heres the code,

System.usbDiskModeActivate()
red = Color.new(255,0,0)
green = Color.new(0,255,0)
white = Color.new(255,255,255)
oldpad = Controls.read()
font = Font.load("visitor.ttf")
font:setPixelSizes(0, 32)
screen:clear()
math.randomseed(os.time())
RN0 = math.random(1,3)
RN1 = math.random(1,3)
RN2 = math.random(1,3)
RN9 = complete
bg = Image.load("background.png")

while true do
  
pad = Controls.read()

  if pad:square() then
  RN0 = math.random(1,3)
  RN1 = math.random(1,3)
  RN2 = math.random(1,3)
  end

    screen:fontPrint(font, 165,150, RN0, red)

    screen:fontPrint(font, 195,150, RN1, red)

    screen:fontPrint(font, 220,150, RN2, red)

if RN0 == 1 and RN9 == complete then
RN9 = one
end

if RN1 == 1 and RN9 == one then
RN9 = two
end

if RN2 == 1 and RN9 == two then
RN9 = three
end


if RN9 == three then
RN9 = complete
screen:clear()
screen:blit(0,0, bg)
screen:fontPrint(font, 10,150, "YOU WON THE JACKPOT!!", green)
end
screen.flip()
screen.waitVblankStart()
end

-= Double Post =-
bump!!!!!!!!!!!!!!!!!!!!! !!!!!