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Spritesheet Animations
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So this was a short project I did. It uses a PNG spritesheet downloaded from the internet to display an animation. Just a basic example of how to do this with Pythonista by using PIL.
The interesting part is actually my motivation behind writing this. Someone in a chatroom asked if Python could be used to "explode a hamster." I couldn't resist :D
Anyways, here's the Gist: https://gist.github.com/20403fcfab8cbb3bbf5a
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Thanks for this. It has set me on the right path for animating my characters. BTW the alpha is not correct on the image. I haven't figured out the best way to set it. I used the image converted to "L" format to set the alpha channel but that is not quite right.
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I didnt need to worry about alpha though because of the black background
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Understood. But if anyone cares about alpha the following code inserted into hamster.py uses the 1st pixel as a keycolor to set the alpha to 0.
<pre>
d = img.load()
keycolor = d[0,0]
for x in range(img.size[0]):
for y in range(img.size[1]):
p = d[x, y]
if p == keycolor:
d[x, y] = (p[0], p[1], p[2], 0)
</pre> -
Here is another sample of an animated walking soldier.
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test @Gcarver where would the alpha code go?
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Right after the Image.open() call.
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thanks, (dont mind me i'm an idiot)
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How can this be used to explode a hamster?!
I love this example and I'm working on a small game engine inspired by it. I will post the code once the game engine actually works and my code isn't such a mess that my bedroom envies it.
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Ill post my code for an AnimatedSprite class when I'm done with it. It will do all of the work for you. You just need to specify the filename and # of frames. Then, call the instance's draw method from your scene's draw function. There are also methods to control the animation like FPS, jump to frame, pause/play, etc
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Hey C0deh4cker, check out the code I posted in the share section using this example.
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In version 1.3 (out today), spritesheet animations should be a lot easier to do. The <a href="http://omz-software.com/pythonista/docs/ios/scene.html#scene.image">image()</a> function has some new, optional parameters that allow you to draw just a part of an image, without having to slice it using PIL.
