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Factor dist() and ldist() into common.c.

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git-svn-id: https://svn.eduke32.com/eduke32@3243 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-11-29 12:49:38 +00:00
parent 375d164138
commit 7614a78cc5
4 changed files with 34 additions and 74 deletions
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16
polymer/eduke32/source/astub.c
View file

@ -2541,22 +2541,6 @@ static void SoundDisplay(void)
}
// PK_ ^^^^
// from sector.c
static int32_t dist(spritetype *s1,spritetype *s2)
{
int32_t x = klabs(s1->x-s2->x);
int32_t y = klabs(s1->y-s2->y);
int32_t z = klabs((s1->z-s2->z)>>4);
if (x<y) swaplong(&x,&y);
if (x<z) swaplong(&x,&z);
{
int32_t t = y + z;
return (x - (x>>4) + (t>>2) + (t>>3));
}
}
int32_t AmbienceToggle = 1;
int32_t ParentalLock = 0;
#undef T1

33
polymer/eduke32/source/common.c
View file

@ -385,3 +385,36 @@ int32_t maybe_append_ext(char *wbuf, int32_t wbufsiz, const char *fn, const char
// If 'fn' has no extension suffixed, append one.
return (Bsnprintf(wbuf, wbufsiz, "%s%s", fn, haveext ? "" : ext) >= wbufsiz);
}
// Approximations to the 2D and 3D euclidean distances. Initial EDuke32 SVN import says
// in jmact/mathutil.c: "Ken's reverse-engineering job".
// Note that jmact/mathutil.c contains practically the same code, but where the
// individual x/y(/z) distances are passed instead.
int32_t ldist(const spritetype *s1, const spritetype *s2)
{
int32_t x = klabs(s1->x-s2->x);
int32_t y = klabs(s1->y-s2->y);
if (x<y) swaplong(&x,&y);
{
int32_t t = y + (y>>1);
return (x - (x>>5) - (x>>7) + (t>>2) + (t>>6));
}
}
int32_t dist(const spritetype *s1, const spritetype *s2)
{
int32_t x = klabs(s1->x-s2->x);
int32_t y = klabs(s1->y-s2->y);
int32_t z = klabs((s1->z-s2->z)>>4);
if (x<y) swaplong(&x,&y);
if (x<z) swaplong(&x,&z);
{
int32_t t = y + z;
return (x - (x>>4) + (t>>2) + (t>>3));
}
}

31
polymer/eduke32/source/m32exec.c
View file

@ -31,6 +31,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "osd.h"
#include "keys.h"
#include "common.h"
// from macros.h
#define rnd(X) ((krand()>>8)>=(255-(X)))
@ -58,36 +59,6 @@ static instype *x_sortingstateptr;
//#include "m32structures.c"
// from sector.c vvv
static int32_t ldist(const spritetype *s1, const spritetype *s2)
{
int32_t x= klabs(s1->x-s2->x);
int32_t y= klabs(s1->y-s2->y);
if (x<y) swaplong(&x,&y);
{
int32_t t = y + (y>>1);
return (x - (x>>5) - (x>>7) + (t>>2) + (t>>6));
}
}
static int32_t dist(const spritetype *s1, const spritetype *s2)
{
int32_t x= klabs(s1->x-s2->x);
int32_t y= klabs(s1->y-s2->y);
int32_t z= klabs((s1->z-s2->z)>>4);
if (x<y) swaplong(&x,&y);
if (x<z) swaplong(&x,&z);
{
int32_t t = y + z;
return (x - (x>>4) + (t>>2) + (t>>3));
}
}
///
#ifdef DEBUGGINGAIDS
void X_Disasm(ofstype beg, int32_t size)
{

28
polymer/eduke32/source/sector.c
View file

@ -192,34 +192,6 @@ int32_t isanearoperator(int32_t lotag)
return 0;
}
int32_t ldist(const spritetype *s1, const spritetype *s2)
{
int32_t x= klabs(s1->x-s2->x);
int32_t y= klabs(s1->y-s2->y);
if (x<y) swaplong(&x,&y);
{
int32_t t = y + (y>>1);
return (x - (x>>5) - (x>>7) + (t>>2) + (t>>6));
}
}
int32_t dist(const spritetype *s1, const spritetype *s2)
{
int32_t x= klabs(s1->x-s2->x);
int32_t y= klabs(s1->y-s2->y);
int32_t z= klabs((s1->z-s2->z)>>4);
if (x<y) swaplong(&x,&y);
if (x<z) swaplong(&x,&z);
{
int32_t t = y + z;
return (x - (x>>4) + (t>>2) + (t>>3));
}
}
static inline int32_t A_FP_ManhattanDist(const DukePlayer_t *ps, const spritetype *s)
{
return klabs(ps->opos.x-s->x)