GP32 Problem With Drawing Sprite

[FabreNZ]

I'm new to GP32 developing (and to the GP32 itself), and I've come across a problem. I used the example Garfield sprite's raw C file for my sprite drawing script:

#include "gp32.h"
#include "garfield.c"

unsigned short *framebuffer;
unsigned short *screen;

int main() {
  short x=100,y=100;
  int i;
  framebuffer = (u16*) FRAMEBUFFER;
  gp_setCpuspeed(66);
  gp_initFramebuffer(framebuffer,16,85);

  for (i=0;i<320*240;i++) {framebuffer[i]=0xFFFF;}

  gp_drawSprite((u16*)garfield,x,y,framebuffer,160,160);

  while (1) { }
}

This compiles and runs fine, but part of Garfield's right half appears on the left. I've probably done some stupid n00b mistake, that's why I'm posting here

 

[pea]

Looks ok to me. Is garfeild.c just the one that comes with the example?
Also, do you have a BLU+? And if so, are you using Mr.Mirkos new SDK? - you are using Mr.Mirkos SDK right?

p.s. and are you from NZ?

 

[FabreNZ]

Thanks for replying!

Is garfeild.c just the one that comes with the example?

Yes, it's the raw sprite file included with the sprite example

Also, do you have a BLU+? And if so, are you using Mr.Mirkos new SDK?

No, I have an FLU

You are using Mr.Mirkos SDK right?

Yes

p.s. and are you from NZ?

Yes I am. I was actually signed up before, and you asked me that same question, but my account got deleted when the server had a hiccup recently.

 

[rtb7]

hello,

sizeof(garfield) gives 51208 (160*160*2=51200) : sprite header in array ?

with :

gp_drawSprite((u16*)(garfield+8),x,y,framebuffer,160,160);

it works.

in the array you can see size : 160,0,160,0 (offset 4)
don't know what 4 first bytes are...

 

[FabreNZ]

Thanks, it's working now!

 

[mr.mirko]

hello,

sizeof(garfield) gives 51208 (160*160*2=51200) : sprite header in array ?

with :

gp_drawSprite((u16*)(garfield+8),x,y,framebuffer,160,160);

it works.

in the array you can see size : 160,0,160,0 (offset 4)
don't know what 4 first bytes are...

​

The garfield sprite comes with a header, instead of
gp_drawSprite((u16*)(garfield+8),x,y,framebuffer,160,160);
you can use :
gp_drawSpriteHT ( (u16*)garfield, 90, 50, framebuffer, 0xFFFE );

In the header is the size of the sprite stored... Have a closer look to the example and docs.

 

[FabreNZ]

Have a closer look to the example and docs.

​

Sorry, I was trying to do it myself because I learn better that way than by going through examples.

 

[pea]

Yes I am. I was actually signed up before, and you asked me that same question, but my account got deleted when the server had a hiccup recently.

oops sorry Only other I can recall from NZ is catmince