Lua Programming Help Thread

Zitat:

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Zitat von bronxbomber92

can any help me with making text return once is hit the edge off the screen? so it doesnt run if the end of the screen? thanks

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I think this should do it.
What I didnt put is how 'x' changes its value. That, is up to you. :icon_wink

Code:

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white = Color.new(255, 255, 255)

x = 100
y = 100

function add_to_x()
blah blah
end

function subtract_from_x()
blah blah
end

while true do

screen:clear()

if x <= 0 then
add_to_x() -- [reverse whatever code you have manipulating 'x's value]
end

if x >= 480 then
subtract_from_x() -- [go back to original manipulating code]
end

screen:print(x, y, "Text", white)

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Zitat:

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Zitat von EminentJonFrost

I think this should do it.
What I didnt put is how 'x' changes its value. That, is up to you. :icon_wink

Code:

---

white = Color.new(255, 255, 255)

x = 100
y = 100

function add_to_x()
blah blah
end

function subtract_from_x()
blah blah
end

while true do

screen:clear()

if x <= 0 then
add_to_x() -- [reverse whatever code you have manipulating 'x's value]
end

if x >= 480 then
subtract_from_x() -- [go back to original manipulating code]
end

screen:print(x, y, "Text", white)

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what would go in the "blah, blah"?

I have a question:
How can i make a picture disapear when i press a button like cross ?

probably somwthing like this

Code:

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if pad:cross() then
screen:clear()
end

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Zitat:

---

Zitat von EminentJonFrost

I think this should do it.
What I didnt put is how 'x' changes its value. That, is up to you. :icon_wink

Code:

---

white = Color.new(255, 255, 255)

x = 100
y = 100

function add_to_x()
blah blah
end

function subtract_from_x()
blah blah
end

while true do

screen:clear()

if x <= 0 then
add_to_x() -- [reverse whatever code you have manipulating 'x's value]
end

if x >= 480 then
subtract_from_x() -- [go back to original manipulating code]
end

screen:print(x, y, "Text", white)

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Zitat:

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Zitat von bronxbomber92

what would go in the "blah, blah"?

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How x changes value.

ok my new game is going to be a car game. i want to know how you would make it so if you hit the top, bottom, or sides of the other car your health is decreased. how would i do that?

Zitat:

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Zitat von bronxbomber92

probably somwthing like this

Code:

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if pad:cross() then
screen:clear()
end

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kinda helpfull but what about if there is 3 pictures, and i want to disable 1 when cross is pressed?


also

Code:

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if pad:up() then
screen:blit(x0, y0, up2)
screen:flip()
screen.waitVblankStart(10)
screen:clear(black)
screen:blit(x0, y0, up1)
screen:flip()
screen.waitVblankStart(10)
screen:clear(black)
y0 = y0 - 5.1
end

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this code will make the 2 pictures to keep changing but the problem is that it effect when they move too.
Can you help me making the both picture keep changing while pressing up and not make them to keep skipping to move up ?

if you want to clear one imahe hen use this

if pad:cross() then
screen:clear(--your image--)
end

hi all, i need help. i want to load many images with one command.i tried this:

Code:

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ct = {}

for a = 1, 300 do

ct[a] = Image.load("ct..a...png")

end

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the images are: ct1.png, ct2.png... all the way to 300. BUT when i start it, luaplayer says it had an error loading this image. :(

pls help me!

It has to be this:

Code:

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ct = {}

for a = 1, 300 do

ct[a] = Image.load("ct"..a..".png")

end

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You forgot two quotations