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help a noob

 
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Iximon



Joined: 08 Sep 2005
Posts: 5
PostPosted: Thu Sep 08, 2005 6:33 am    Post subject: help a noob Reply with quote
i have just started to play whit lua and have done the hello world. but i cant use it on my psp because i have 1.52 :( so i use the win emu. i have also made the animation tutorial, but i have a problem whit my own program i have started with. ist very simpel. but i cant compile it. here is the code:
Code:
background = Image.load("background.png")
player = Image.load("player.png")

while true do
   screen:blit(0, 0, background, 0, 0, background:width(), background:height(), false)

   x = 200
   y = 135

   screen:blit(x, y, player)
   end

   pad = Controls.read()
   if pad:right() then
   x = x + 1
   end

   if pad:left() then
   x = x - 1
   end

   if pad:up() then
   y = y + 1
   end

   if pad:down() then
   y = y - 1
   end

   screen:waitVblankStart()
   screen:flip()

end


when i try to compile i get a error: <eof> expected near 'end' and i have no ide how to fix it. can u please tell me what i have done wrong.
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zhaD



Joined: 07 Sep 2005
Posts: 5
Location: Québec/Canada
PostPosted: Thu Sep 08, 2005 6:45 am    Post subject: Reply with quote
<eof> expected near 'end'

guess it means it expected the end of the script file instead of 'end' (on last line).

looking at your code Id say you should remove the 'end' under :

x = 200
y = 135

screen:blit(x, y, player)
end <---

as it doesnt seem to be related to any if or while
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ksilvert



Joined: 06 Sep 2005
Posts: 5
PostPosted: Fri Sep 09, 2005 2:30 am    Post subject: Reply with quote
If you're trying to have the 'player' move around based on the D pad selection, you'll need to move these two lines above the beginning of the while loop or your image won't move.

x = 200
y = 135
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LuMo



Joined: 21 Aug 2005
Posts: 410
Location: Austria
PostPosted: Fri Sep 09, 2005 2:36 am    Post subject: Reply with quote
Code:
while not Controls.read():start() do

would enable to leave the program again (eg for use in lowser)
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F34R



Joined: 28 Jul 2005
Posts: 29
PostPosted: Sat Sep 10, 2005 1:17 pm    Post subject: Reply with quote
Here's a little code that I wrote to control an object moving with the dpad. It also tells you what direction you are pressing, along with the buttons (circle, square, cross, triangle) that you are pressing.
Code:

-- Activate USB Mode
System.usbDiskModeActivate()

-- Get colors for text
white = Color.new(255, 255, 255)
red = Color.new(255, 0, 0)

-- Load images
square = Image.load("square.png")  -- This is the object we'll be controlling


-- Set starting X/Y positions
x = 200
y = 100


while true do
pad = Controls.read()

-- This all should be relatively easy to follow from here

if pad:up() then
   screen:clear()
   screen:print(200,1, "You Pressed Up", white)
   y = y - 5
   if y < -4 then
      y = -4
   end
end


if pad:down() then
   screen:clear()
   screen:print(200,1, "You Pressed Down", white)
   y = y + 5
   if y > 230 then
      y = 230
   end
end


if pad:left() then
   screen:clear()
   screen:print(200,1, "You Pressed Left", white)
   x = x - 5
   if x < -4 then
      x = -4
   end
   
end


if pad:right() then
   screen:clear()
   screen:print(200,1, "You Pressed Right", white)
   x = x + 5
   if x > 440 then
      x = 440
   end
   
end


if pad:cross() then
   screen:clear()
   screen:print(200,1, "You Pressed [CROSS]", white)
end


if pad:triangle() then
   screen:clear()
   screen:print(200,1, "You Pressed [TRIANGLE]", white)
end


if pad:square() then
   screen:clear()
   screen:print(200,1, "You Pressed [SQUARE]", white)
end


if pad:circle() then
   screen:clear()
   screen:print(200,1, "You Pressed [CIRCLE]", white)
end

if pad:start() then
      break
   end

-- Draw my little square

screen:blit(x, y, square) -- Draws to offscreen
screen.flip() -- flips offscreen to onscreen

end
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Iximon



Joined: 08 Sep 2005
Posts: 5
PostPosted: Wed Sep 14, 2005 5:23 pm    Post subject: Reply with quote
i have made some progres, but i have a problem. my images dont turn invisible. the color i dont want in my game, show up. i have lookt at other games images and i have taken the same color. 255, 0, 255 but it wont disepere. i also wondering hor to make a array. is there any tutorials for the array making. sorry for my english. :( here is the code:
Code:
background = Image.load("images/background.png")
-- ladda bakgrundsbild
player = Image.load("images/marioright2.png")
-- ladda spelarbild
board = Image.load("images/board.png")
-- ladda animation
moveright1 = Image.load("images/marioright1.png")
moveright2 = Image.load("images/marioright2.png")
moveright3 = Image.load("images/marioright3.png")

moveleft1 = Image.load("images/marioleft1.png")
moveleft2 = Image.load("images/marioleft2.png")
moveleft3 = Image.load("images/marioleft3.png")

player = moveright1
-- ladda board
playerx = 100
playery = 100
move = 0
-- var x och y kordinaterna ska vara ifrån start
speed = 1
-- bestämmer hastigheten på player
green = Color.new(0, 255, 0)
-- delkarera green till färgen grön

bPressOnce1 = 0
bPressOnce2 = 0

while true do
   pad = Controls.read() -- kontrollerna
   if pad:left() then
      if bPressOnce1 == 0 then
         move= 0
      end
      
      bPressOnce1 = true;
      playerx = playerx - speed
      move = move + 1
      
      if move == 1 then
         player = moveleft1         
      end
      if move == 8 then
         player = moveleft2
      end      
      if move == 15 then
         player = moveleft3
         move = 0
      end
   end

   if pad:left() == 0 then
      bPressOnce1 = false
   end


   if pad:right() then
      if bPressOnce2 == 0 then
         move = 0
      end      
      
      bPressOnce2 = true;
      playerx = playerx + speed
      move = move + 1
      
         if move == 1 then
         player = moveright1         
      end
      if move == 8 then
         player = moveright2
      end      
      if move == 15 then
         player = moveright3
         move = 0
      end
   end
      if pad:right() == 0 then
      bPressOnce2 = false
   end
   if pad:up() then
      playery = playery - speed
   end

   if pad:down() then
      playery = playery + speed
   end
   
   if pad:cross() then
      break
   end
   
   if pad:triangle() then
      speed = speed + 0.5
   end
   
   if pad:square() then
      speed = speed - 0.5
   end
   
   if playerx > 448 then -- blockera så att den inte kan åka utanför skärmen :)
      playerx = 448
   end
   
   if playerx < 0 then
      playerx = 0
   end
   
   if playery > 240 then
      playery = 240
   end
   
   if playery < 0 then
      playery = 0
   end            --här sluta blockeringen
   
   screen:blit(0, 0, background, 0, 0, background:width(), background:height(), false)
   -- blitta bakgrunden till skärmen
   screen:blit(playerx, playery, player)
   --blitta player till skärmen
   screen:blit(0, 0, board)
   screen:print(4, 4, "Speed:", green)
   screen:print(50, 4, speed, green)
   screen:print(4, 14, "X pos:", green)
   screen:print(50, 14, playerx, green)
   screen:print(4, 24, "Y pos:", green)
   screen:print(50, 24, playery, green)
   -- skriver ut speed, Y och X  värden i vänstra hörnet på skärmen
   screen.waitVblankStart()
   screen.flip()
   -- vänd skärmen så att man ser allt.
end
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