Computer Science Canada

Animating Characters
Author:  Tasty Pastry [ Fri Jun 09, 2017 4:35 pm ]
Post subject:  Animating Characters
I'm trying to animate some characters in turing, but I don't know how to animate then only when a key is pressed. For example goes up when the up arrow key is pressed, down when the down arrow key is pressed, etc. I also can't figure out how to stop the character from moving after the key has been depressed. I've got the animation part down, but the rest I can't seem to figure out.

Turing:


var numFrames := Pic.Frames ("Guy Walking-Fight-Dead (3).gif")
        % Load the picture
        var delayTime : int
        var pics : array 1 .. numFrames of int
        Pic.FileNewFrames ("Guy Walking-Fight-Dead (3).gif", pics, delayTime)

        var sprite: int
        sprite:= Sprite.New (pics (1))
        Sprite.SetPosition (sprite, 0, 100, false)
        Sprite.Show (sprite)
        for x : 2 .. maxx by 2
            Sprite.Animate (sprite, pics ((x div 2) mod numFrames + 1), 100, x, false)
            delay (60)    % Stop sprite from moving too quickly
        end for
        Sprite.Free (sprite)




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Author:  Insectoid [ Sat Jun 10, 2017 6:50 am ]
Post subject:  RE:Animating Characters
Let me see if I understand what you're going for here.

if a key is pressed, then move the character.

Does that sound about right?
Author:  Tasty Pastry [ Sat Jun 10, 2017 11:33 am ]
Post subject:  Re: RE:Animating Characters
Insectoid @ Sat Jun 10, 2017 6:50 am wrote:
Let me see if I understand what you're going for here.

if a key is pressed, then move the character.

Does that sound about right?


Yeah, I did try if statements, but if I put them inside the for loop, the for loop just executes and finishes without key input, and if I put it before the loop, it does work, but it goes through the whole animation sequence instead of stopping after the key is depressed.

Turing:


% If statement after for

var chars : array char of boolean

var numFrames := Pic.Frames ("Guy Walking-Fight-Dead (3).gif")
        % Load the picture
        var delayTime : int
        var pics : array 1 .. numFrames of int
        Pic.FileNewFrames ("Guy Walking-Fight-Dead (3).gif", pics, delayTime)

        var sprite: int
        sprite:= Sprite.New (pics (1))
        Sprite.SetPosition (sprite, 0, 100, false)
        Sprite.Show (sprite)
        for x : 2 .. maxx by 2
        Input.KeyDown (chars)
            if chars (KEY_UP_ARROW) then
            Sprite.Animate (sprite, pics ((x div 2) mod numFrames + 1), 100, x, false)
            delay (60)    % Stop sprite from moving too quickly
            end if
        end for
        Sprite.Free (sprite)

% If statement before for

var chars : array char of boolean

var numFrames := Pic.Frames ("Guy Walking-Fight-Dead (3).gif")
        % Load the picture
        var delayTime : int
        var pics : array 1 .. numFrames of int
        Pic.FileNewFrames ("Guy Walking-Fight-Dead (3).gif", pics, delayTime)

        var sprite: int
        sprite:= Sprite.New (pics (1))
        Sprite.SetPosition (sprite, 0, 100, false)
        Sprite.Show (sprite)
        loop
        Input.KeyDown (chars)
        if chars (KEY_UP_ARROW) then
        for x : 2 .. maxx by 2

     
            Sprite.Animate (sprite, pics ((x div 2) mod numFrames + 1), 100, x, false)
            delay (60)    % Stop sprite from moving too quickly
     
        end for
        end if
        end loop
        Sprite.Free (sprite)

Author:  Insectoid [ Sat Jun 10, 2017 2:18 pm ]
Post subject:  RE:Animating Characters
Why do you think you need a for loop?
Author:  Tasty Pastry [ Sat Jun 10, 2017 2:54 pm ]
Post subject:  Re: RE:Animating Characters
Insectoid @ Sat Jun 10, 2017 2:18 pm wrote:
Why do you think you need a for loop?


Because in the animation sequence there are different sprites to use, so I needed that so it can go through all the sprites in the walking animation.
Author:  Insectoid [ Sat Jun 10, 2017 5:56 pm ]
Post subject:  RE:Animating Characters
Are you sure you can't think of another way to do that without a for loop?
Author:  Tasty Pastry [ Sat Jun 10, 2017 6:52 pm ]
Post subject:  Re: RE:Animating Characters
Insectoid @ Sat Jun 10, 2017 5:56 pm wrote:
Are you sure you can't think of another way to do that without a for loop?


I don't think I can do that without a for loop.
Author:  Insectoid [ Sat Jun 10, 2017 7:05 pm ]
Post subject:  RE:Animating Characters
You only need the for loop so there's a counter for the gif frames, right? Can you think of another way to make a counter? I mean, it is just a number that increments every loop after all.

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