Computer Science Canada How do you put an output "border" for animations so it doesn't pass outside the output screen? |
| Author: | Macuser111 [ Sat Dec 11, 2010 8:16 pm ] |
| Post subject: | How do you put an output "border" for animations so it doesn't pass outside the output screen? |
What is it you are trying to achieve? <Replace all the <> with your answers/code and remove the <>> What is the problem you are having? outputting a "border" for animations so it doesn't pass outside the output screen? Describe what you have tried to solve this problem made an if structure for the border but ends up killing the animation. Please specify what version of Turing you are using 4.1.1 %Declaration Section var startpointx, startpointy : int := 0 var endpointx, endpointy : int := 50 var key : string (1) %set screen mode and size setscreen ("graphics:400;300") setscreen ("noecho") setscreen ("offscreenonly") setscreen ("nocursor") procedure display drawfillbox (startpointx, startpointy, endpointx, endpointy, white) drawfillbox (startpointx + 1, startpointy + 1, endpointx - 1, endpointy - 1, blue) getch (key) if key = chr (200) then startpointy := startpointy + 1 %up endpointy := endpointy + 1 elsif key = chr (208) then %down startpointy := startpointy - 1 endpointy := endpointy - 1 elsif key = chr (205) then startpointx := startpointx + 1 %right endpointx := endpointx + 1 else if key = chr (203) then startpointx := startpointx - 1 %left endpointx := endpointx - 1 end if end if View.Update end display %Main Program loop display exit when key = chr (27) end loop |
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| Author: | Searing [ Tue Dec 14, 2010 10:40 am ] |
| Post subject: | RE:How do you put an output "border" for animations so it doesn\'t pass outside the output screen? |
First of all, instead of having an else, then another if, consider just simply having two if structures, it will simplify your coding and allow you to debug easier. Also, what you are trying to accieve is to not allow the user to go offscreen, so you should look at what allows him to go offscreen, then fix that. Hint, it's in the if structures, and includes restrictions. |
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