Player automatically Move up and down HELP ASAP

General
1

Ok so basically I just want to be able to have my player moving up and down automatically
how do you make this work?
MY CODE:

-- Use this function to perform your initial setup
function setup()
    xpos=0
    grass={1,1,0,0,0,1,1,0,0,0}
end

-- This function gets called once every frame
function draw()

sprite("Documents:Background",WIDTH/2,HEIGHT/2,WIDTH,HEIGHT)

  sprite("Documents:spaceship",120,120)
        
  --  for i = 1,20 do
  --     sprite("Cargo Bot:Title Large Crate 1", xpos/2+ 50*i-100, 60,60,70) 
 --   end
        
   for i = 1,10 do
        if grass[i]==1 then
          sprite("Tyrian Remastered:Space Ice 6", xpos+101*i-100, 0)
       else
          sprite("Documents:Floor", xpos+101*i-100, 0)
      end
   end
  xpos=xpos-1
    --need to reset xpos at an appropriate point to get wraparound
end

```
2 
--# Main
function setup()
    xpos = 0
    grass={1,1,0,0,0,1,1,0,0,0}
    currPos = WIDTH/2
    leftMax = 200
    rightMax = 500
    goRight = true
    goLeft = false
end
 
-- This function gets called once every frame
function draw()
 
sprite("Documents:Background",WIDTH/2,HEIGHT/2,WIDTH,HEIGHT)
 
  sprite("Documents:spaceship",120,120)
         
   for i = 1,10 do
        if i==1 then 
            
            if currPos < leftMax then
                goRight = true
                goLeft = false
                elseif currPos > rightMax then
                    goLeft = true
                    goRight = false
            end
            
            if goRight == true then
                currPos = currPos + 3
                elseif goLeft == true then
                    currPos = currPos - 3
                    end
                    
          sprite("Tyrian Remastered:Space Ice 6", xpos+WIDTH*i-100, currPos)
       else
          sprite("Documents:Floor", xpos+101*i-100, 0)
      end
   end
  xpos=xpos-1
    --need to reset xpos at an appropriate point to get wraparound
    end

Not sure if thats what you wanted.
I also changed grass[i] == 1 to i==1 if you dont understand why i did that you can comment asking

3

I can see two beginners playing ping-pong. I have to step right in.

Yes, Marcos, I have to ask why you changed grass[i] == 1 to i == 1 because I have no idea. And please make use of proper code indentation.

Kingamer, I assume your spaceship is the player. If you want it to go up and down you need to adjust the y-position of the sprite. And you need to know if you have to go up or down.


-- ship globals
shipY = 120
shipDir = "up"

Make your ship adjustable in the y-axis. Homework (sorry that I consider this a homework, but it absolutely think it is):

Which of the following options is correct?


function draw()
  -- <code snipped>

  -- Is this correct?
  sprite("Documents:spaceship",shipY,120)
  -- Or is this correct?
  sprite("Documents:spaceship",120,shipY)

  -- <code snipped>
end

Now you have a ship than can possibly move up and down, yet is doesn’t. You have to tell it to do so.


function draw()
  -- <code snipped>

  if shipDir == "up" then
    shipY = shipY + 1
  elseif shipDir == "down" then
    shipY = shipY - 1
  end

  -- <code snipped>
end

Homework: In which direction will your ship go initially? (Yes, up is correct.) At some point it has to go down. Determine a point, your choice. If the ship passes that point, let it go down.

Constraints: Don’t ask my questions on a new thread as you like to it now.

4

Oops sorry, i answered in a rush and messed it all up :p.

Now i see that player is actually some other thing other than a player.
I looked over his code and somehow tought that he was mistakenly creating lots of players and went on to fix that.
Now i dont know why i tought he needed a loop to paint one player and well, nine floors…

So i changed it to if i==1… I may want to fix that, sorry :stuck_out_tongue: that was really stupid, thanks for pointing that out.
atleast i got the moving working i guess… Lol.