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lua code help

 
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newcoder



Joined: 22 Dec 2006
Posts: 10
PostPosted: Fri Dec 22, 2006 6:32 am    Post subject: lua code help Reply with quote
im new to lua but ive got a lot of the basics done. im wondering what is making my code just stay at a black screen and then reset i think it is the timer and if functions i have used but am not sure if someone could help that would be great. heres my code:
Code:
red = Color.new(255,0,0)
background = Image.load("b.png")
player = Image.load("a.png")
jewel = Image.load("c.png")
screenwidth = 480 - player:width()
screenheight = 272 - player:width()
Player = {}
Player[1] = {x=10,y=10}
Background = {}
Background[1] = {x=0,y=0}
Jewel = {}
Jewel[1] = {x=50,y=50}
Jewel[2] = {x=10,y=10}
Jewel[3] = {x=70,y=35}
Jewel[4] = {x=75,y=120}
Jewel[5] = {x=100,y=25}
counter = Timer.new()
counter:start()
while true do
pad = Controls.read()
screen:clear()
end
currentTime = counter:time()
screen:blit(Background[1].x, Background[1].y, background)
screen:blit(Player[1].x,Player[1].y,player)
if pad:left() and Player[1].x > 0 then
Player[1].x = Player[1].x - 2
end

if pad:right() and Player[1].x < screenwidth then
Player[1].x = Player[1].x + 2
end

if pad:up() and Player[1].y > 0 then
Player[1].y = Player[1].y - 2
end

if pad:down() and Player[1].y < screenheight then
Player[1].y = Player[1].y + 2
end

if currentTime > 100 then
screen:blit(Jewel[1].x,Jewel[1].y,jewel)
if currentTime > 250 then
screen:blit(Jewel[2].x,Jewel[2].y,jewel)
end

if currentTime > 400 then
screen:blit(Jewel[3].x,Jewel[3].y,jewel)
end

if currentTime > 550 then
screen:blit(Jewel[4].x,Jewel[4].y,jewel)
end

if currentTime > 700 then
screen:blit(Jewel[5].x,Jewel[5].y,jewel)
end

if currentTime > 1500 then
counter:reset(0)
counter:start()
end
screen.flip()
screen.waitVblankStart()
end
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Altair



Joined: 20 May 2006
Posts: 76
Location: The Netherlands
PostPosted: Fri Dec 22, 2006 8:55 am    Post subject: Reply with quote
It gets stuck here:

Code:
while true do
pad = Controls.read()
screen:clear()
end


You put an end there where it shouldn't be. Now you close the while true do-loop and it just stays in it untill it crashes. You should remove it.
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newcoder



Joined: 22 Dec 2006
Posts: 10
PostPosted: Fri Dec 22, 2006 12:17 pm    Post subject: Reply with quote
i tried tha against my better judgement and it gave me an error saying it has to have that "and". so any other suggestions?
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be2003



Joined: 20 Apr 2006
Posts: 144
PostPosted: Fri Dec 22, 2006 4:38 pm    Post subject: Reply with quote
there is no such thing as "and"...
Code:

red = Color.new(255,0,0)
background = Image.load("b.png")
player = Image.load("a.png")
jewel = Image.load("c.png")
screenwidth = 480 - player:width()
screenheight = 272 - player:width()
Player = {}
Player[1] = {x=10,y=10}
Background = {}
Background[1] = {x=0,y=0}
Jewel = {}
Jewel[1] = {x=50,y=50}
Jewel[2] = {x=10,y=10}
Jewel[3] = {x=70,y=35}
Jewel[4] = {x=75,y=120}
Jewel[5] = {x=100,y=25}
counter = Timer.new()
counter:start()

while true do
   pad = Controls.read()
   screen:clear()
   currentTime = counter:time()
   screen:blit(Background[1].x, Background[1].y, background)
   screen:blit(Player[1].x,Player[1].y,player)

   if pad:left() then if Player[1].x > 0 then
      Player[1].x = Player[1].x - 2
   end end
   if pad:right() then if Player[1].x < screenwidth then
      Player[1].x = Player[1].x + 2
   end end
   if pad:up() then if Player[1].y > 0 then
      Player[1].y = Player[1].y - 2
   end end
   if pad:down() then if Player[1].y < screenheight then
      Player[1].y = Player[1].y + 2
   end end

   if currentTime > 100 then
      screen:blit(Jewel[1].x,Jewel[1].y,jewel)
   end
   if currentTime > 250 then
      screen:blit(Jewel[2].x,Jewel[2].y,jewel)
   end
   if currentTime > 400 then
      screen:blit(Jewel[3].x,Jewel[3].y,jewel)
   end
   if currentTime > 550 then
      screen:blit(Jewel[4].x,Jewel[4].y,jewel)
   end
   if currentTime > 700 then
      screen:blit(Jewel[5].x,Jewel[5].y,jewel)
   end

   if currentTime > 1500 then
      counter:reset(0)
      counter:start()
   end

   screen.flip()
   screen.waitVblankStart()
end

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Altair



Joined: 20 May 2006
Posts: 76
Location: The Netherlands
PostPosted: Fri Dec 22, 2006 10:29 pm    Post subject: Reply with quote
Well yeah ofcourse there should be an "end", but not in the place where you put it. The loop should close after all the other stuff you want it to do, so at the end of the code, like be2003 posted.
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