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  [SOLVED] How should I replicating the fill or bucket tool in a 2d array?  (Read 1113 times)
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Offline doppler

Senior Devvie

Medals: 10
Projects: 5

« Posted 2013-02-20 01:10:21 »

Edit: Found a solution online while researching Flood Filling thanks to actual. It's a simple recursive method that works very well. Here's a link to the javascript example (also doable in Java):

I'm currently working on a level editor for an Android game. My goal is to add cool tools such as:

  • pencil: Add single textures to the grid
  • eraser: remove texture from grid
  • bucket: fill in neighbor textures

I can't seem to find any tutorials on how to fill in an arbitrary geometric area for the bucket tool. I'm not necessarily looking for source code, I just can't seem to figure out how to go about filling in parts of a 2d array. I've considered using path-finding techniques, but I feel there may be a simple solution. Here is an image of what I'm dealing with:

I've created many level editors in the past, but never played around with the bucket tool idea. If you have any thoughts, please post about it; I'm sure other people would like to know how to do this as well. Thanks in advance!

PS - This tool is being written from HTML 5's Canvas (Javascript), not Java. I've worked with both, so syntax isn't really a problem; I'll take any pseudo code.

Practice! Practice! Practice!
Offline actual

JGO Coder

Medals: 24

« Reply #1 - Posted 2013-02-20 01:27:26 »

The term you are looking for is Flood Fill or Boundary Fill.
Offline doppler

Senior Devvie

Medals: 10
Projects: 5

« Reply #2 - Posted 2013-02-20 02:15:02 »

That's exactly what I was looking for! Thank you for the quick response.

Practice! Practice! Practice!
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