Moving a box - GameCreators Forum

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Lan

16

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Joined: 8th Sep 2009

Location: Earth

Posted: 27th Aug 2010 18:18

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Say you make a box. How do you move it across the screen without using a loop and variables for the coordinates?

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Hawkblood

16

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Joined: 5th Dec 2009

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Posted: 27th Aug 2010 18:32

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You have to have a 'do-loop'
You could point the object in the direction you want to move an move it each frame by an arbitrary amount:

+ Code Snippet

do
  point object 1,1,0,0 `points down x-axis
  move object 1,0.1 `each frame the object moves 0.1 down the x-axis
  sync
loop

Or, do you mean 2D?

+ Code Snippet

do
  sprite 1,sprite position x(1)+0.1,sprite position y(1),1
  sync
loop

The fastest code is the code never written.

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BMacZero

20

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Joined: 30th Dec 2005

Location: E:/ NA / USA

Posted: 27th Aug 2010 18:35

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Using a loop and variables is a vital part of any program - it's impossible to do this without some kind of loop. Why do you want to avoid using one?

Latest progress: Fog of War implemented

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Grog Grueslayer

Valued Member

21

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Joined: 30th May 2005

Playing: Green Hell

Posted: 27th Aug 2010 18:40

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Hmmm... how does one make a box and move it across the screen without using a loop or variables. In a way that shouldn't be done.

` Make a box
ink rgb(255,0,0),0
box 0,0,50,50
get image 1,0,0,50,50,1

` Show the sprite 
sprite 1,0,200,1
` Wait 20 nanoseconds
wait 20
sprite 1,10,200,1
wait 20
sprite 1,20,200,1
wait 20
sprite 1,30,200,1
wait 20
sprite 1,40,200,1
wait 20
sprite 1,50,200,1
wait 20
sprite 1,60,200,1
wait 20
sprite 1,70,200,1
wait 20
sprite 1,80,200,1
wait 20
sprite 1,90,200,1
wait 20
sprite 1,100,200,1
wait 20
sprite 1,110,200,1
wait 20
sprite 1,120,200,1
wait 20
sprite 1,130,200,1
wait 20
sprite 1,140,200,1
wait 20
sprite 1,150,200,1
wait 20
sprite 1,160,200,1
wait 20
sprite 1,170,200,1
wait 20
sprite 1,180,200,1
wait 20
sprite 1,190,200,1
wait 20
sprite 1,200,200,1
wait 20
sprite 1,210,200,1
wait 20
sprite 1,220,200,1
wait 20
sprite 1,230,200,1
wait 20
sprite 1,240,200,1
wait 20
sprite 1,250,200,1
wait 20
sprite 1,260,200,1
wait 20
sprite 1,270,200,1
wait 20
sprite 1,280,200,1
wait 20
sprite 1,290,200,1
wait 20
sprite 1,300,200,1
wait 20
sprite 1,310,200,1
wait 20
sprite 1,320,200,1
wait 20
sprite 1,330,200,1
wait 20
sprite 1,340,200,1
wait 20
sprite 1,350,200,1
wait 20
sprite 1,360,200,1
wait 20
sprite 1,370,200,1
wait 20
sprite 1,380,200,1
wait 20
sprite 1,390,200,1
wait 20
sprite 1,400,200,1
wait 20
sprite 1,410,200,1
wait 20
sprite 1,420,200,1
wait 20
sprite 1,430,200,1
wait 20
sprite 1,440,200,1
wait 20
sprite 1,450,200,1
wait 20
sprite 1,460,200,1
wait 20
sprite 1,470,200,1
wait 20
sprite 1,480,200,1
wait 20
sprite 1,490,200,1
wait 20
sprite 1,500,200,1
wait 20
sprite 1,510,200,1
wait 20
sprite 1,520,200,1
wait 20
sprite 1,530,200,1
wait 20
sprite 1,540,200,1
wait 20
sprite 1,550,200,1
wait 20
sprite 1,560,200,1
wait 20
sprite 1,570,200,1
wait 20
sprite 1,580,200,1
wait 20
sprite 1,590,200,1
wait 20
sprite 1,600,200,1
wait 20
sprite 1,610,200,1
wait 20
sprite 1,620,200,1
wait 20
sprite 1,630,200,1
wait 20
sprite 1,640,200,1
wait 20
sprite 1,650,200,1
wait 20

` Delete the sprite
delete sprite 1
` Clear the screen
cls
` Change the color back to white
ink rgb(255,255,255),0
` Show plea to do it the right way
text 0,0,"Done!  Now can I do it the right way with a loop and variables?"
` Wait for a keypress
wait key

+ Code Snippet

` Make a box
ink rgb(255,0,0),0
box 0,0,50,50
get image 1,0,0,50,50,1

` Show the sprite 
sprite 1,0,200,1
` Wait 20 nanoseconds
wait 20
sprite 1,10,200,1
wait 20
sprite 1,20,200,1
wait 20
sprite 1,30,200,1
wait 20
sprite 1,40,200,1
wait 20
sprite 1,50,200,1
wait 20
sprite 1,60,200,1
wait 20
sprite 1,70,200,1
wait 20
sprite 1,80,200,1
wait 20
sprite 1,90,200,1
wait 20
sprite 1,100,200,1
wait 20
sprite 1,110,200,1
wait 20
sprite 1,120,200,1
wait 20
sprite 1,130,200,1
wait 20
sprite 1,140,200,1
wait 20
sprite 1,150,200,1
wait 20
sprite 1,160,200,1
wait 20
sprite 1,170,200,1
wait 20
sprite 1,180,200,1
wait 20
sprite 1,190,200,1
wait 20
sprite 1,200,200,1
wait 20
sprite 1,210,200,1
wait 20
sprite 1,220,200,1
wait 20
sprite 1,230,200,1
wait 20
sprite 1,240,200,1
wait 20
sprite 1,250,200,1
wait 20
sprite 1,260,200,1
wait 20
sprite 1,270,200,1
wait 20
sprite 1,280,200,1
wait 20
sprite 1,290,200,1
wait 20
sprite 1,300,200,1
wait 20
sprite 1,310,200,1
wait 20
sprite 1,320,200,1
wait 20
sprite 1,330,200,1
wait 20
sprite 1,340,200,1
wait 20
sprite 1,350,200,1
wait 20
sprite 1,360,200,1
wait 20
sprite 1,370,200,1
wait 20
sprite 1,380,200,1
wait 20
sprite 1,390,200,1
wait 20
sprite 1,400,200,1
wait 20
sprite 1,410,200,1
wait 20
sprite 1,420,200,1
wait 20
sprite 1,430,200,1
wait 20
sprite 1,440,200,1
wait 20
sprite 1,450,200,1
wait 20
sprite 1,460,200,1
wait 20
sprite 1,470,200,1
wait 20
sprite 1,480,200,1
wait 20
sprite 1,490,200,1
wait 20
sprite 1,500,200,1
wait 20
sprite 1,510,200,1
wait 20
sprite 1,520,200,1
wait 20
sprite 1,530,200,1
wait 20
sprite 1,540,200,1
wait 20
sprite 1,550,200,1
wait 20
sprite 1,560,200,1
wait 20
sprite 1,570,200,1
wait 20
sprite 1,580,200,1
wait 20
sprite 1,590,200,1
wait 20
sprite 1,600,200,1
wait 20
sprite 1,610,200,1
wait 20
sprite 1,620,200,1
wait 20
sprite 1,630,200,1
wait 20
sprite 1,640,200,1
wait 20
sprite 1,650,200,1
wait 20

` Delete the sprite
delete sprite 1
` Clear the screen
cls
` Change the color back to white
ink rgb(255,255,255),0
` Show plea to do it the right way
text 0,0,"Done!  Now can I do it the right way with a loop and variables?"
` Wait for a keypress
wait key

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