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Port of Duke Nukem 3D

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This ports Fabien Sanglard's Chocolate Duke to run on a version of SDL
for Rockbox.

Change-Id: I8f2c4c78af19de10c1633ed7bb7a997b43256dd9
This commit is contained in:
Franklin Wei 2017-01-21 15:18:31 -05:00
parent 01c6dcf6c7
commit a855d62025
994 changed files with 336924 additions and 15 deletions
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54
apps/plugins/sdl/progs/duke3d/Engine/src/fixedPoint_math.c Normal file
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// converted from asm to c by Jonof
#include <stdio.h>
#include "platform.h"
#include "fixedPoint_math.h"
void clearbuf(void *d, int32_t c, int32_t a)
{
int32_t *p = (int32_t*)d;
while ((c--) > 0) *(p++) = a;
}
void clearbufbyte(void *D, int32_t c, int32_t a)
{ // Cringe City
uint8_t *p = (uint8_t *)D;
int32_t m[4] = { 0xffl,0xff00l,0xff0000l,0xff000000l };
int32_t n[4] = { 0,8,16,24 };
int32_t z=0;
while ((c--) > 0) {
*(p++) = (uint8_t )((a & m[z])>>n[z]);
z=(z+1)&3;
}
}
void copybuf(void *s, void *d, int32_t c)
{
int32_t *p = (int32_t*)s, *q = (int32_t*)d;
while ((c--) > 0) *(q++) = *(p++);
}
void copybufbyte(void *S, void *D, int32_t c)
{
uint8_t *p = (uint8_t *)S, *q = (uint8_t *)D;
while((c--) > 0) *(q++) = *(p++);
}
void copybufreverse(void *S, void *D, int32_t c)
{
uint8_t *p = (uint8_t *)S, *q = (uint8_t *)D;
while((c--) > 0) *(q++) = *(p--);
}
void qinterpolatedown16(int32_t* bufptr, int32_t num, int32_t val, int32_t add)
{ // gee, I wonder who could have provided this...
int32_t i, *lptr = bufptr;
for(i=0;i<num;i++) { lptr[i] = (val>>16); val += add; }
}
void qinterpolatedown16short(int32_t* bufptr, int32_t num, int32_t val, int32_t add)
{ // ...maybe the same person who provided this too?
int32_t i; short *sptr = (short *)bufptr;
for(i=0;i<num;i++) { sptr[i] = (short)(val>>16); val += add; }
}