mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-22 18:20:40 +00:00
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
#include "../include/wgt.h"
|
|
#include "../include/mem.h"
|
|
|
|
short wloadsprites (color *pal, unsigned char *file, block *image_array, short start,
|
|
short end)
|
|
{
|
|
short maxsprite; /* maximum # of sprites in the file */
|
|
short startingsprite; /* First sprite in the file. Version <=3 = 1
|
|
Version 4 = 0 */
|
|
unsigned int a, b, i, spritemade;
|
|
char buf[14];
|
|
int size;
|
|
|
|
a = (unsigned int)*file;
|
|
file += 2;
|
|
|
|
/* Get the version number, and change the startingsprite accordingly.
|
|
If version <= 3, maxsprite contains the maximum number of sprites
|
|
that can be stored in a file. If version > 4, maxsprite contains
|
|
the number of the highest sprite in the file. (empty sprites at
|
|
the end are not kept in the file. */
|
|
if (a <= 3)
|
|
startingsprite = 1;
|
|
else
|
|
startingsprite = 0;
|
|
|
|
memcpy_char(&buf, file, 13);
|
|
file += 13;
|
|
|
|
if (0 == memcmp (" Sprite File ", &buf[0], 13))
|
|
/* see if it is a sprite file */
|
|
{
|
|
for (int k=0;k<256;k++) {
|
|
pal[k].r = 4 * *file++;
|
|
pal[k].g = 4 * *file++;
|
|
pal[k].b = 4 * *file++;
|
|
}
|
|
wsetpalette (0, 255, pal);
|
|
|
|
maxsprite = (short)*file; /* maximum sprites in this file */
|
|
file += 2;
|
|
|
|
for (i = start; i <= end; i++) /* make all sprites null
|
|
(still need to call wfreesprites) */
|
|
image_array[i] = NULL;
|
|
|
|
for (i = startingsprite; i <= maxsprite; i++) /* load them in */
|
|
{
|
|
spritemade = (unsigned int)*file; /* flag to see if sprite exists */
|
|
file += 2;
|
|
if (spritemade == 1)
|
|
{
|
|
a = (unsigned int)*file; /* get width and height */
|
|
file += 2;
|
|
b = (unsigned int)*file;
|
|
file += 2;
|
|
|
|
if ((i >= start) && (i <= end)) /* Load this one */
|
|
{
|
|
size = a * b;
|
|
|
|
image_array[i] = (block)malloc ((size * 4) + 12);
|
|
block arr = image_array[i];
|
|
|
|
*arr++ = a;
|
|
*arr++ = b;
|
|
|
|
for (int k=0;k<size;k++) *arr++ = vgapal[*file++];
|
|
}
|
|
else /* Don't load this one */
|
|
file += size;
|
|
}
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
void wfreesprites (block *image_array, short start, short end)
|
|
{
|
|
short i;
|
|
|
|
for (i = start; i <= end; i++)
|
|
{
|
|
if (image_array[i] != NULL)
|
|
{
|
|
free (image_array[i]);
|
|
image_array[i] = NULL;
|
|
}
|
|
}
|
|
}
|