nCraft (3D minecraft-like game for the nspire)

[lkj]

Hello everybody !

I have problems with color support, and I would need your help...
I have to change my buffer from uint8_t* to void*.

But in a function to change a pixel, I have to cast a void* value to an uint8_t if the screen is in 4 bpp mode.
So I tried :

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function setPixel(void *buffer,int x,int y,int color) {     //...     uint8_t px=*((uint8_t *)buffer[pos])     //pos is an int     //... }

But gcc does not like that... What should I do instead?

A function doesn't have a "function" in front of its name, although I'm not sure you wrote it in your code like that.

For the cast, try this:

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1	uint8_t px=(((uint8_t *)buffer)[pos]);

If you write a * in front of it and a [] at the end, you're dereferencing the pointer twice, the * is wrong here.
I'm not sure if you need the parentheses around "(uint8_t*)buffer", but they certainly don't do any harm.

[Chockosta]

Oh yeah, small confusion with  Lua
(Obviously, I did not write that in my code)

But this doesn't work either...
GCC says :
buffer.c:19:35: warning : dereferencing ‘void *’ pointer [enabled by default]
buffer.c:19:5: error : invalid use of void expression

EDIT : Anyway, I found another way to do this (I just copied the setPixel function in particles, the ndless sample)

[lkj]

I tested it with an older x86 gcc and it worked...
But I'm glad you found another solution

[Chockosta]

So, CX compatibility should be okay, but for random reasons it keep crashing when I open it with the emulator...
I really do not understand.

The CX emulator works fine, I can run other programs that I compiled.
But it doesn't seem that the error comes from the code, since it runs perfectly on non-CX emulator.
I have no clue...

[Levak]

So, CX compatibility should be okay, but for random reasons it keep crashing when I open it with the emulator...
I really do not understand.

The CX emulator works fine, I can run other programs that I compiled.
But it doesn't seem that the error comes from the code, since it runs perfectly on non-CX emulator.
I have no clue...

When it crashes, does it say something, like bad write word at 0x..... or it just Resets ?

[Chockosta]

When I enter "c" in the bebugger, I get :
"Warning at PC=114DA7EC: Bad read_word: 900d000c"...
Maybe a malloc failed ?

[Levak]

No, this is normal. On emulator I haven't been able to edit (write) neither timer 1, timer 2 nor RTC.
It appears that, for the RTC, it is synchronized with the real time of the computer and you can't edit it. I don't know for the timer 1 and timer 2, maybe the same story.

[calc84maniac]

The timers work, but they are a different module on the Nspire CX than on the original Nspire. The list of registers is here, and as you can see, Base+0x0C is a write-only register.

[DJ Omnimaga]

Does it work perfectly on calc, though? Sometimes emulators do not emulate stuff 100% accurately.

[calc84maniac]

It wouldn't work oncalc either because it has been programmed using only the classic Nspire timers. The CX timers have to be programmed differently.

[Chockosta]

I never tested any of my ndless programs on calc...
Actually, I don't have ndless on my calc. (Or else I would be too tempted to play in class )

So I hope that it will work like in nspire_emu...

[Chockosta]

Thanks for your link, calc84maniac, but I still have problems.
According to this, the timer value address should be 0x900D0004, right ?

But the value at 0x900D0004 is 0 and doesn't change...

[Chockosta]

(Sorry for the triple post...)

By the way, even if I can't use the timers, the color display works great.
Here is some eye-candy...
(In the first picture, you can see iron, gold and diamond, and in the second one, there is pretty much every block I added )

[AzNg0d1030]

Ohohoho, the triple post is fine when you need to make us see THESE BEAUTIFUL PICTURES!
Try to not triple in such a short time though

[annoyingcalc]

(Sorry for the triple post...)

By the way, even if I can't use the timers, the color display works great.
Here is some eye-candy...
(In the first picture, you can see iron, gold and diamond, and in the second one, there is pretty much every block I added )

WOW! I cant wait for more updates