Robots w/Lasers

April 26, 2006

Saving to SRAM, Loading for All

Draw version R10 is released! The new features are:

  • Saving to SRAM, flash-cart users can now save!
  • Loading saved .png from CF/SD adaptors
  • Loading saved image from SRAM (again, for flash cart users) mobdro

Now, I don’t have a working flash cart, so I would be grateful if you could test out the loading and saving to SRAM, and post the results into the comments here. The main limitation is that I can’t save larger than 64KB images to SRAM. Mobdro APK This will be solved in the future (most likely by lowering the image quality, there are several optimizations I can make.)

Download R10 .zip
Download R10 .zip for Supercard CF users




Whee, I can draw with color
Filed under: Draw,Nintendo DS — davr @ 10:42 pm

April 25, 2006

Flash is still better than AJAX

So I’ve been ignoring the whole ajax/js/dhtml thing, only doing flash programming. It turns out that the implementation of XmlHttpRequest has a few major shortfalls. Short summary of linked article:

  1. There are no persistant connections. This rules out any type of ‘server-push’ programming model, forcing clients to poll the server, which either puts more strain on bandwidth and server resources, and/or increases lag time between updates.
  2. You can’t turn off HTTP request headers

So in essence, AJAX coders are still stuck with LoadVars. They don’t have anything that offers the functionality of XMLSocket (persistant connections, ability to send whatever data you want).

The one shortfall of XMLSocket (text only data, must be null-terminated), is removed in Flash 9 (formerly known as 8.5), and already I’ve seen a flash-based pop3 example as well as a flash-based vnc viewer/client.

The solution is to modify the implementation of XmlHttpRequest. The above article talks about some possible fixes. This would really be a boon to all the “Web 2.0” coders who for whatever reason are unable to use Flash.

Filed under: Flash — davr @ 5:44 pm

April 24, 2006

DS Wifi Lib v0.3!

After much waiting, and much complaining by the community, Stephen Stair finally got most of the basics working! WEP, DHCP, TCP, ICMP, DNS, WFC data, and various other acronyms are all supported now!

Expect to see many neat things from the homebrew community in the coming weeks!

Link to wifi lib release

Filed under: Nintendo DS — davr @ 1:32 pm

April 21, 2006

Dynamic Sound in 8.5

Please see this update

As far as I know the company formerly known as Macromedia did not add any kind of dynamic sound generation methods to ActionSciprt3 / Flash 8.5. However, they did add two features we can use to hack it:

  1. ‘ByteArray’ class which is a low level data class
  2. ‘Loader’ class (formerly MovieClipLoader) can load from a ByteArray, as well as the normal loading from a URL.

So the theory is, I generate valid swf into a byteArray that simply contains sound data, then I load that and it plays.

This would involve me understanding the swf binary file format…however that’s a bit of a pain, so I cheated.

  1. Create a .fla in Flash 8 & import a sound into frame 1
  2. Copy & paste the entire data from the .swf into an array in my AS3 project
  3. At runtime, replace the central part of the array with new data (leaving the header and footer of the data intact). Just a bit of trial & error to see how much data needs to be left

Here is a very simple example:
(more…)

Filed under: Flash — davr @ 11:39 am

April 19, 2006

JetBlue Easter Egg

This is hilarious. I wonder how long until this gets pulled out. Someone’s head is definately going to roll.

1. Go to JetBlue Routemap
2. Click on any destination airport
3. Hold shift and type PBJ

UPDATE: As I write this, the page no longer has the animation, and only has a static image now. Here is a screenshot to see what you missed.

Filed under: Flash — davr @ 2:58 pm

April 18, 2006

Smoother than ever

Next revision of my draw app is released, here are the new features:

  • “Smudge” tool — will smear the colors around, can be used to create a ‘watercolor’ like effect
  • “Picker” tool — the standard ‘eyedropper’ tool, select a color from off of the canvas
  • Color picker enhancements — L button now exits the picker, also shows the current selected color in top right
  • Controls change — Change the current tool using the Left/Right buttons now.

Latest update

As always, I welcome feedback, and please send me your pictures as well!

Filed under: Draw,Nintendo DS — davr @ 9:49 am

April 17, 2006

Drawings

Here are a few more images that I have drawn, using the new smudge tool, and/or the new fill tool. (FYI: All the images I post are resized to 50%, which is how they are displayed on the DS’s screen. I usually then link them to the full-size png, which usually doesn’t look as smooth, but has the advantage of being twice the resolution of the display on the DS)

Blah
Blah
Color Blobs
Color Blobs (Michelle helped on this one)
Happy Tree
Happy Tree
Waterfall
Waterfall
Fax Machine
Fax Machine
Color Fax Machine
Color Fax Machine
Filed under: Draw,Nintendo DS — davr @ 9:31 am

April 13, 2006

Buckets & Colors

Three new features:

  • Bucket Tool – using the ‘slow fill’ method I talked about. It’s not 100% perfect yet
  • Eraser Tool – this needs some more work, if you erase slowly it does funny things
  • Better color picker – Looks more like a normal color picker, and I included a greyscale bar to easily pick whites/blacks/greys.

Again, I’d be thankful if people could test it out and let me know how it works. I welcome all feedback / bug reports / etc.

Latest update

Color Picker
Color Picker
Bucket fills
Bucket fills
Filed under: Draw,Nintendo DS — davr @ 4:29 pm

April 12, 2006

Supercard CF version of Draw

Ok, turns out if I disable Supercard SD support, then it works on supercard CF, otherwise not. So I am providing a version which has been tested to work on SC:CF:

Latest update

poffy
An image by Poffo, drawn on SC CF

Watch movie online Rings (2017)

Filed under: Draw,Nintendo DS — davr @ 1:31 pm

libpng for DS

Ok, I’ve packged up libpng and zlib for use on the DS. I also included a small makefile which should build both of them and install them for use. Please let me know if it does not work for you.

http://davr.org/ds2/libpng_ds.tgz

Basically, I only had to comment out one line in libpng (but man did it take me a while to find that line), in the png_zalloc() function, and then I changed the makefiles to use arm-elf-gcc instead of gcc (same for ranlib, ar)

Filed under: Draw,Nintendo DS — davr @ 11:16 am
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