Lua Programming Help Thread

Zitat:

---

Zitat von natan333

Code:

---

while true do
blue=Color.new(0,200,350)         
screen:clear()
letterPos = {}
letterPosx = 200, 250
letterPosy = 100, 150
screen:print(letterPosx, letterPosy, "HELLO", blue)
pad = Controls.read()
if pad:circle() then letterPosx = letterPosx + 2 end


if pad:select() then
break
end
screen.flip()
screen.waitVblankStart()


end

---

whats wrong with this code? It dosent give no error but Circle dosent make it move =/

---

also, your screen.waitVblankStart() should come BEFORE your screen:flip()

is it possible for you to put the code showing the correct way ?

This is my problem:
a = 2
b = a - 1.
tempa = a
a = b
b = tempa

somehow, they both equal one, instead of a = 1 and b = 2.

Code:

---

while true do
blue=Color.new(0,200,350)         
screen:clear()
letterPosx = 200
letterPosy = 100
screen:print(letterPosx, letterPosy, "HELLO", blue)
pad = Controls.read()
if pad:circle() then letterPosx = letterPosx + 5 end


if pad:select() then
break
end
screen.flip()
screen.waitVblankStart()


end

---

Try that. and the array was the letterPos={} thing.

Ok I got it working, Moving =P but if i release the button , it comes back =/

Code:

---

while true do
blue=Color.new(0,200,350)         
screen:clear()

letterPosx = 200, 200
letterPosy = 150, 150
pad = Controls.read()
if pad:cross() then letterPosx = letterPosx + 10 end
screen:print(letterPosx, letterPosy, "HELLO", blue)



if pad:select() then
break
end
screen.waitVblankStart()
screen.flip()



end

---

what do i do to make it stay ?

Zitat:

---

Zitat von natan333

Ok I got it working, Moving =P but if i release the button , it comes back =/

Code:

---

while true do
blue=Color.new(0,200,350)         
screen:clear()

letterPosx = 200, 200
letterPosy = 150, 150
pad = Controls.read()
if pad:cross() then letterPosx = letterPosx + 10 end
screen:print(letterPosx, letterPosy, "HELLO", blue)



if pad:select() then
break
end
screen.waitVblankStart()
screen.flip()



end

---

what do i do to make it stay ?

---

try this:

Code:

---

blue = Color.new(0,200,350)

letterPosx = 200
letterPosy = 150

while true do

pad = Controls.read()

screen:print(letterPosx, letterPosy, "HELLO", blue)

if pad:cross() then
screen:clear()
letterPosx = letterPosx + 10
end


if pad:select() then
break
end

screen.waitVblankStart()
screen.flip()
end

---

it should work

yeah i learned now =PPPPPP Thanks Guys
now i have to learn how to make it attomatic
i saw source of an example of moving Hello Word, and it has Time in there, but have no idea how to change the pad to move attomatic =P :PC:

someone please answer my question (see above)

to overwrite the pad to be attomatic i have to overwrite this

Code:

---

time = 0
pi = math.atan(1) * 4
while true do         
screen:clear()

x = math.sin(pi * 2 / 360 * time) * 150 + 192.5
screen:print(x, 100, "HELLO", blue)
time = time + 1
if time >= 360 then
                time = 0
        end

---

?
or i can keep the "letterPosx = 200
letterPosy = 150"?

guys what do i replace if pad:circle() to make it attomatic so it moves by it self with out pressing a button ?