Random Number Generator?

[Op Winter Storm]

Hey, I'm brand new to Lua. I was wondering if anyone could teach me how to make a simple random number generator.

Basically, define a list of numbers (say, 1-100), and maybe some more advanced stuff later.

Thanks!

[Ensayia]

Lua comes with the math.random() function. Have a look at http://www.lua.org/pil/18.html

[Teraku]

Code: Select all

randomNumber = math.random(1, 100)

This assigns a random number between 1 and 100 to the randomNumber variable. No need to do any extra stuff to get a different number each time.

[Op Winter Storm]

Ok, thanks!

So I would I set this up? I know that you have to have a main.lua, a conf.lua, and a play.bat, and that you need to enable/disable all of these things in conf.lua, and you have

function love.load ()
end
function love.draw ()
end
function love.update ()
end

in main.lua, and the stuff to put in play.bat, but where do you put the random generator part?

[Teraku]

Put it anywhere you need. If you want more specific help, you need to tell us what you want. Here's some example code which prints a random number near the top left of the screen, and refreshes it every time you press "r":

Code: Select all

function love.load()
  number = math.random(1, 100)
end

function love.draw()
  love.graphics.print(number, 10, 10)
end

function love.keypressed(key)
  if key == "r" then
    number = math.random(1, 100)
  end
end

[Op Winter Storm]

Thanks, this is really neat! But when I hit "r", it doesn't come up with a new number. Is there a way that I can make the number go after a word, i.e., "Your number is: " and then their number next to it?

[micha]

Is there a way that I can make the number go after a word, i.e., "Your number is: " and then their number next to it?

Replace the print-command by

Code: Select all

 love.graphics.print('Your number is :' .. number, 10, 10)

[davisdude]

By the way, you can also do other things with math.random:

Code: Select all

math.random()

With no arguments it returns a number between 0 and 1.

Code: Select all

math.random(100)

Returns an integer between 1 and 100 in this example.

Code: Select all

math.random( 1, 100 )

Returns an integer between 1 and 100 in this example.

[elsalvador]

here might help had same problem with random hope it helps

Code: Select all

function love.load()
	g=love.graphics
	k={}
	k.x=100
	k.y=100
	k.w=50
	k.h=50
	k.speed=200	
	u={}
	u.x=400
	u.y=100
	u.w=50
	u.h=50	
	
	Over_LAP=false
	M  =0
	RR =0
	TT = false	
end
function love.draw()
	g.setColor(255,255,255,255)
	g.rectangle('line',k.x,k.y,k.w,k.h)
	g.rectangle('line',u.x,u.y,u.w,u.h)
	
	g.print('COLLISION: '..M,200,10)
	g.print('RANDOM NUMBER: '..RR,200,30)
	
end
function love.update(dt)
	if love.keyboard.isDown("d") then
		k.x=k.x+k.speed*dt
	end
	if love.keyboard.isDown("a") then
		k.x=k.x-k.speed*dt
	end
	--collision--
	if  (k.y + k.h  >  u.y )  and ( k.y  < u.y + u.h )  and
		(k.x + k.w  >  u.x )  and ( k.x  < u.x + u.w )  then
		Over_LAP=true
		RR = math.random(1,10)
	else
		Over_LAP=false
	end	
	
	if Over_LAP then
        if not TT then 
            M = M + 1 
            TT = true  
        end
    else
        TT = false  
    end	
end

[Op Winter Storm]

Thanks! This all helps me a LOT! elsalvador, yours was a bit (by bit I mean a lot) over my head. Though it's still helpful, it's WAY over my head (like, miles and miles).