help with a simple info button to display new window or screen?

Comments

• dave1707 Mod

  March 2013 Posts: 8,781

  Here is something I had from long ago that might give you an idea. There are a lot of different ways to do what you are asking.

  
  displayMode(FULLSCREEN)
  supportedOrientations(PORTRAIT)        -- set for portrait mode
  
  function setup()
      func=menu
  end
  
  function draw()
      func()
  end
  
  function menu()
      background(0,0,200)  
      
      w=WIDTH/2            -- set width value
      eh=HEIGHT-400        -- set height of different options
      nh=HEIGHT-600        -- eh easy, nh normal, hh hard
      hh=HEIGHT-800
       
      fontSize(48)            -- set font size
      fill(255,0,0)            -- set font color
      
      menuTitle1="Main Menu"            -- main title
      menuTitle2="Select Option"    
      text(menuTitle1,w,HEIGHT-100)     -- display titles 
      text(menuTitle2,w,HEIGHT-200)      
   
      fill(0,255,0)           -- set easy values
      
      t1="Easy"
      text(t1,w,eh)
      w1,h1=textSize(t1)     -- width and height of easy text 
       
      t2="Normal"            -- set normal values
      text(t2,w,nh)
      w2,h2=textSize(t2)      -- width and height of normal text
      
      t3="Hard"                -- set hard values
      text(t3,w,hh)  
      w3,h3=textSize(t3)      -- width and height of hard text  
  end
  
  function easy()
      background(40,40,50)
      text("EASY screen",WIDTH/2,HEIGHT/2)
      text("tap screen for menu",WIDTH/2,HEIGHT/2-200)
  end
  
  function normal()
      background(40,40,50)
      text("NORMAL screen",WIDTH/2,HEIGHT/2)
      text("tap screen for menu",WIDTH/2,HEIGHT/2-200)
  end
  
  function hard()
      background(40,40,50)
      text("HARD screen",WIDTH/2,HEIGHT/2)
      text("tap screen for menu",WIDTH/2,HEIGHT/2-200)
  end
  
  function touched(t)
      if t.state==BEGAN then
          if func ~= menu then
              func=menu
              return
          end
          if func==menu then
              if t.x>w-w1/2 and t.x<w+w1/2 and t.y>eh-h1/2 and t.y<eh+h1/2 then
                  func=easy
              end
              if t.x>w-w2/2 and t.x<w+w2/2 and t.y>nh-h2/2 and t.y<nh+h2/2 then
                  func=normal
              end
              if t.x>w-w3/2 and t.x<w+w3/2 and t.y>hh-h3/2 and t.y<hh+h3/2 then
                  func=hard
              end  
         end
      end  
  end
  
  
• jasl

  March 2013 Posts: 32

  This is great! It makes it really clear for me and I now totally get it. Thanks so much .. :-D
• fikabord

  July 2013 Posts: 49

  this is really what i'm looking for but I feel I dont understand the everything here. Please bare with the noob questions.

  Why doesn't it work calling menu() from draw()?

  When does the easy, medium and hard functions get called?

  trying to learn how to set up buttons but feel i dont really get it.
• dave1707 Mod

  July 2013 Posts: 8,781

  If you call menu() from draw, that's all you'll be calling 60 times per second. The call to func() allows you to change what function is getting called. Func() starts out as being Menu, so that's what gets executed. While you're in menu, you have the option to call easy, normal, or hard depending on what button you touch. When you make a selection, Func is assigned a function ( easy, normal, or hard ) and that's what gets called in draw. You just keep moving between screens based on what you select.
• fikabord

  July 2013 Posts: 49

  thx dave for super quick response. I think what was confusing to me was that func could change which function it was in that way.
• fikabord

  July 2013 Posts: 49

  Ok, so here's another noob follow up question. I used your code and trying to apply it to how think / would like to design the code. Problem is: I dont understand why it doesnt write "click" when state is set to 1 by the touch event. I know the code gets into the if but why doesnt it print "click"?

  
  -- z001
  
  -- displayMode(FULLSCREEN)
  -- supportedOrientations(PORTRAIT)        -- set for portrait mode
  
  -- Use this function to perform your initial setup
  function setup()
      print("Hello World!")
      createMainMenu()
      state = 0
  end
  
  
  
  -- This function gets called once every frame
  function draw()
      -- This sets a dark background color 
      background(0, 0, 0)
  
      -- This sets the line thickness
      strokeWidth(5)
  
      -- place main menu
     createMainMenu()
  
  
  end
  
  function createMainMenu()
      -- set positions for main menu
      menuLeftColumn = WIDTH/4
      menuRightColumn = menuLeftColumn+WIDTH/2
      menuTopRow = HEIGHT-850
      menuBottomRow = HEIGHT-910
  
      -- set style of main menu
      fill(255,255,255)
      fontSize(24)
      font("AmericanTypewriter-Bold")
  
      -- set main menu text
      create = "create"
      explore = "explore"
      use = "use"
      endDay = "end day"
  
      -- set size of menu buttons
      createWidth, createHeight = textSize(create)
  
      -- draw buttons
      text(explore, menuLeftColumn, menuTopRow)
      text(create, menuRightColumn, menuTopRow)
  
      if state == 1 then
          w = WIDTH/2
          h = HEIGHT/2
          fill(255,255,255)
          fontSize(42)
          text("click"' w, h)
          print(state)
      end
  end
  
  function touched(t)
      if t.state==BEGAN then
              if t.x>menuLeftColumn-createWidth/2 and t.x<menuLeftColumn+createWidth/2 and t.y>menuTopRow-createHeight/2 and t.y<menuTopRow+createHeight/2 then
                  print("create")
                  state = 1
              end
      end  
  end
  
• Jmv38 Mod

  July 2013 Posts: 3,297

  In FULLSCREEN mode you cant see the output panel where things are printed. Comment this line to see it.
• dave1707 Mod

  July 2013 edited July 2013 Posts: 8,781

  In the section "if state == 1 then" the line of code "text("click" ' w, h)" is wrong. The ' should be a , . It should be text("click", w,h) . Also, when to tap explore, you set state to 1 and print the value 1 every time draw is called, 60 times a second. Each time you tap explore, the word click prints, but is pushed off the top of the print window by all the 1's printing.
• dave1707 Mod

  July 2013 edited July 2013 Posts: 8,781

  Try changing the if statement to this. The problem is you're mixing text and print. If you want print to work, then set state to 0. If you want text to show, then you don't set state to 0 but print will show 60 times a second which is what you don't want to do.

  
      if state == 1 then
          w = WIDTH/2
          h = HEIGHT/2
          fill(255,255,255)
          fontSize(42)
          text("click", w, h)     -- fixed the error here
          print(state)
          state=0         -- set state back to 0
      end
  
  
• fikabord

  July 2013 Posts: 49

  Oh, fantastic! I just had the print there for debug reasons. Maybe i should have said so.

  Thinking of what im trying to achieve i think your example will be perfect. Will do some more coding and see how it goes.

  Once again, super big thanks!