Lua Programming Help Thread

What do i need to do for the hello to appear 1st and the GoodBye to appear some seconds later when i hold X button?
the good tutorial dosent tell it so i m :(
This is the code that i m stuck at

Code:

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while true do
blue=Color.new(0,200,350)     
screen:clear()
pad = Controls.read()
if pad:cross() then
screen:print(200, 70, "Hello!", blue)
screen.waitVblankStart(50)
screen:print(200, 100, "GoodBye!", blue)
end

if pad:start() then
break
end

screen.waitVblankStart()
screen.flip()
end

---

Zitat:

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Zitat von soadnation

what exactly do u mean by object orientation.

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Basically you can create "objects" in lua instead of just variables. FOr example, thjink of the function screen:clear(). The defined function is Image.clear() and the params (would be, but its compiled..) Image.clear(self,color) (I think)
That is what im asking about. And to "add" your object, you call the metatable command..I forgot what though.

Code:

---

while true do
blue=Color.new(0,200,350)     
screen:clear()
pad = Controls.read()
if pad:cross() then
screen:print(200, 70, "Hello!", blue)
screen.flip()
screen.waitVblankStart(50)
screen:print(200, 100, "GoodBye!", blue)
screen.flip()
screen.waitVblankStart(50)
end

if pad:start() then
break
end

screen.waitVblankStart()
screen.flip()
end

---

there, you forgot to flip the screen.

that code sam, both blinks 1st time then the top stop blinking and the bottom keep blinking

editted
now i understand the while true do and the End thing is to make it repeats
my question is: while its reapeating the text , is there a way to add another text to not to blink with it ? so its not in the same family

Code:

---

blue=Color.new(0,200,350)       

screen:clear()

screen:print(200, 70, "Hello!", blue)

while true do
screen.flip()
screen.waitVblankStart(30)
screen.flip()
screen.waitVblankStart(30)
end

---

I edited to explain better

Actually...that code might work.... if you put the hello on one side and goodbye on the other. And "while [condition] do" .. "end" means "while [condition] is true (correct) do this between 'while' and 'end'"

Zitat:

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Zitat von youresam

Actually...that code might work.... if you put the hello on one side and goodbye on the other. And "while [condition] do" .. "end" means "while [condition] is true (correct) do this between 'while' and 'end'"

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i kinda understand though. is it possible for you make it with the code ? so i get what you mean . srry if you get mad, i just want to know the basics, the tutorial only goes to lesson 2 and dosent teach these stuff

Zitat:

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Zitat von natan333

i kinda understand though. is it possible for you make it with the code ? so i get what you mean . srry if you get mad, i just want to know the basics, the tutorial only goes to lesson 2 and dosent teach these stuff

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I'll help you out tomorrow after school, what exactly do you want it to do?

hey youaresam, i dunt understand the math.ceil function much.. so howo can you do this? if analog stik moves LEFT, the speed = speed-1 . if analog stik moves RIGHT, then speed = speed+1. thx!

Somehow the following code never executes my main loop.

Code:

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function textinput()

      screen:blit(0, 0, background, 0, 0, background:width(), background:height(), false)      --blit the background
      screen:blit(x,y, highlight ,0,0, highlight:width(), highlight:height(), true)            --blit the cursor
     
      if pad:right() and timer:time() > 75 then
        x = x + 10
        timer:reset(0)
        timer:start()
      end
     
      if pad:left() and timer:time() > 75 then
        x = x - 10
        timer:reset(0)
        timer:start()
      end
     
      if pad:down() and timer:time() > 75 then
        y = y + 12
        x = x + 5
        timer:reset(0)
        timer:start()
      end

      if pad:up() and timer:time() > 75 then
        y = y - 12
        x = x - 5
        timer:reset(0)
        timer:start()
      end

end

function Showstatus()
        screen:print(6,30,"x = " .. x .. "y = " .. y .. "keyboard =" .. keyboard,textColor)
end


--Main loop
while true do

Showstatus()
textinput()

if pad:start() then
  break
end

screen.waitVblankStart()
screen.flip()
end

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Before this snippet are nothing but simple variable declarations.
Someone could point out the error? Thanks in advance.

(Meh, this looks too much as a kthnxplz topic)