Search found 63 matches

by Derrik
Wed Mar 18, 2015 10:34 pm
Forum: DS/DSi Development
Topic: Sprite and background share tiles?
Replies: 2
Views: 5168

Sprite and background share tiles?

Is it possible for the sprites and backgrounds to use the same tileset in the same VRAM bank?
by Derrik
Sat Jan 17, 2015 12:02 pm
Forum: DS/DSi Development
Topic: Enabling VBlank counter
Replies: 1
Views: 5749

Enabling VBlank counter

The VBlank counter is constantly stuck at 160, causing the DS to freeze if a swiWaitForVBlank is executed. I couldn't work out which registers to set in order to re-enable it, BIT(2) of DISPSTAT is a read only value for whether the VBlank counter is enabled or not, but I don't know what I have to do...
by Derrik
Thu Oct 30, 2014 11:07 pm
Forum: maxmod
Topic: How to tell if sound effect is currently playing?
Replies: 3
Views: 13711

Re: How to tell if sound effect is currently playing?

Izhido wrote:So, have you had any luck finding such function? :)
Nope. Without using a custom build of maxmod I don't think it is possible. I'm surprised MaxMod is missing such basic functionality when it is being pushed as the sound library to use for DS and GBA homebrew.
by Derrik
Thu Oct 30, 2014 5:36 pm
Forum: DS/DSi Development
Topic: libnds examples give errors in NO$GBA
Replies: 0
Views: 12029

libnds examples give errors in NO$GBA

If you run a libnds example in NO$GBA and go to Utility -> Errors it says there are upwards of 100 or so errors per second. Is this a problem with libnds, or NO$GBA? What causes this?
by Derrik
Tue Oct 28, 2014 11:09 pm
Forum: DS/DSi Development
Topic: Using quaternions
Replies: 15
Views: 12902

Re: Using quaternions

Sorry, the file didn't upload correctly. Here it is.
by Derrik
Tue Oct 28, 2014 11:04 pm
Forum: DS/DSi Development
Topic: Using quaternions
Replies: 15
Views: 12902

Re: Using quaternions

I'm not sure if this needs its own topic or not. Using the D-Pad you can rotate the teapot to a direction. Using L you can reposition the camera to be facing the model. I want the teapot to always face in the direction relative to the camera, not the world. So for example, I want pressing up to alwa...
by Derrik
Sun Oct 26, 2014 12:56 pm
Forum: DS/DSi Development
Topic: Using quaternions
Replies: 15
Views: 12902

Re: Using quaternions

Just for the benefit of anyone who might find this useful, here's a complete demo of using quaternions with the camera following the model.
by Derrik
Fri Oct 24, 2014 5:30 pm
Forum: DS/DSi Development
Topic: Saving like a commerical game
Replies: 1
Views: 4391

Re: Saving like a commerical game

This isn't possible, however, you can use argv[0] to get the name of the nds file and use it to get [the name of the nds].sav, giving the illusion of saving like a commercial game. Here's some sample code: char saveName[256] = { '\0' }; if(argc > 0 && strlen(argv[0]) > 4) { snprintf(saveName, 255, "...
by Derrik
Fri Oct 24, 2014 5:15 pm
Forum: DS/DSi Development
Topic: Using quaternions
Replies: 15
Views: 12902

Re: Using quaternions

Never mind, the delta position is calculated correctly. I just forgot to reverse the rotation before applying the inverse of delta position.
by Derrik
Fri Oct 24, 2014 4:26 pm
Forum: DS/DSi Development
Topic: Using quaternions
Replies: 15
Views: 12902

Re: Using quaternions

With help from IRC, I've rethought my approach and was able to get the model to translate in the direction it is rotated at. My problem now however is that I cannot get the new position which the model has been translated at. I first get the position matrix before movement has been applied: getPosit...