Lua Programming Help Thread

It's ok now, I've got it working like this...

PHP-Code:

---

-- Defining colors --
green = Color.new(0,255,0)
ball1 = Image.load("ball1.png")
ball2 = Image.load("ball2.png")
ball3 = Image.load("ball3.png")

-- Math --
pi = 4*math.atan(1)

-- Defining tables --
ball = {}
ball[1] = {ball = ball1, x = 20, y = 20, speed = 5000, angle = pi/8}
ball[2] = {ball = ball2, x = 40, y = 60, speed = 5000, angle = pi/8}
ball[3] = {ball = ball3, x = 60, y = 100, speed = 5000, angle = pi/8}

-- Functions --
function move()
  for k in pairs(ball) do
    screen:blit(ball[k].x, ball[k].y, ball[k].ball, true)
    ball[k].x = ball[k].x + ball[k].speed
    ball[k].y = ball[k].y + ball[k].speed
  end
end

function moving()
for k in pairs(ball) do
  a = ball[k].speed / 500
  if a >= 0 then
    if ball[k].x <= 6 or ball[k].x >= 460 then
      ball[k].angle = pi - ball[k].angle
    end
    if ball[k].y <= 5 or ball[k].y >= 252 then
      ball[k].angle = ball[k].angle * (-1)
    end
    ball[k].x = ball[k].x + math.cos(ball[k].angle) * a
    ball[k].y = ball[k].y + math.sin(ball[k].angle) * a
    ball[k].speed = ball[k].speed - 10
  end
  screen:blit(ball[k].x,ball[k].y,ball[k].ball,true)
end
end

while true do
  screen:clear()
  moving()
  
  screen.waitVblankStart()
  screen.flip()
end 


---

Thanks...

well i didn't do that much hehe but you're welcome! :D

can I play 2 sounds at the same time?? if there is a way post it please!!!

Zitat:

---

Zitat von MEXICANSNAKE

can I play 2 sounds at the same time?? if there is a way post it please!!!

---

Yes, You Can.

How would i get it to sellect somthing in a list randomly? and if i have it load a txt would it see the info in hte txt as whats in it ex.: Viat(is the first line in the txt) i have it load Viat.txt and the value for tthe Viat.txt would be Viat?

can anyone help me pls??

whats ur question grimfate?

Zitat:

---

Zitat von Grimfate126

my code:

Code:

---

pad = Controls.read()
dx = pad:analogX()
dy = pad:analogY()

        if math.abs(dx) > 32 then
                cursorx = cursorx + dx / 64
                          height = height +1
        end
        if math.abs(dy) > 32 then
                cursory = cursory + dy / 64
        end

---

how can i make it so that if the analog stik goes down, height decreases by 1?right now, if you go up or down, the height increases.

---

Code:

---

pad = Controls.read()
dx = pad:analogX()
dy = pad:analogY()

        if math.abs(dx) > 32 then
                cursorx = cursorx + dx / 64
                          height = height + math.ceil(1/dx)
        end
        if math.abs(dy) > 32 then
                cursory = cursory + dy / 64
        end

---

The math.ceil function will make it return either 1 or -1 based on if dx is positive or negative.

I am having trouble with some random numbers. I have my code set up perfectly the way I want it and it works except that I get the same random numbers for different variables at times, which is not what I want. I have tried to counteract this by setting up kind of a checker system to detect like numbers in different variables and change them accordingly, however my efforts haven't succeded as of yet. I have an example of the type of code I am using and if anyone has any suggestions or now exactly whats up with it I will appreciate the advice/help.

Code:

---

function randomnumbers()
        var1 = math.random(1,4)
        var2 = math.random(1,4)
        var3 = math.random(1,4)
        var4 = math.random(1,4)

        if var2 == var1 then
                var2 = math.random(1,4)
        end
        if var2 == var3 then
                var2 = math.random(1,4)
        end
        if var2 == var4 then
                var2 = math.random(1,4)
        end
        if var3 == var1 then
                var3 = math.random(1,4)
        end
        if var3 == var2 then
                var3 = math.random(1,4)
        end
        if var3 == var4 then
                var3 = math.random(1,4)
        end
        if var4 == var1 then
                var4 = math.random(1,4)
        end
        if var4 == var2 then
                var4 = math.random(1,4)
        end
        if var4 == var3 then
                var4 = math.random(1,4)
        end
end

---

Have you used "random.seed(os.time( ))"? Thats makes the random "truly" random.