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Fixed a division-by-zero issue, and a couple of other minor things.

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@3997 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2012-02-15 22:49:30 +00:00
parent 8421aff462
commit bd44e87734
1 changed files with 35 additions and 15 deletions
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48
quakec/csaddon/src/cam.qc
View file

@ -26,13 +26,23 @@ typedef struct
cam_t position[64]; cam_t position[64];
cam_t view[64]; cam_t view[64];
} camdata_t; } camdata_t;
#define VER 1i /*bump when the above structs change*/
static camdata_t cdata;
static camdata_t *camdata; static camdata_t *camdata;
static var float splinefile = -1; static var float splinefile = -1;
static int edit_type = 0; static var int edit_type = 0;
static vector submenu_position; static vector submenu_position;
void(int *dest, int bytes) memclr =
{
bytes = bytes>>2i;
while(bytes > 0i)
{
bytes = bytes - 1i;
dest[bytes] = 0i;
}
};
void() spline_init = void() spline_init =
{ {
/*precache the shader*/ /*precache the shader*/
@ -46,6 +56,16 @@ void() spline_init =
} }
camdata = (camdata_t*)(fgets(splinefile)); camdata = (camdata_t*)(fgets(splinefile));
if (!camdata)
error("unable to mmap spline.dat\n");
if (camdata->ver != VER)
{
print("spline.dat version is outdated, wiping.\n");
memclr ((int*)camdata, sizeof(camdata_t));
camdata->ver = VER;
}
}; };
void() spline_shutdown = void() spline_shutdown =
{ {
@ -264,22 +284,22 @@ vector(spline_t *s, float frac_time) spline_calculate_position =
if (s->numpoints == 3)// || (s->numpoints > 3 && s->type == 1)) if (s->numpoints == 3)// || (s->numpoints > 3 && s->type == 1))
{ {
t1 = 1-frac_time; t1 = 1-frac_time;
t2 = pow(t1, s->numpoints - 1); t2 = pow(t1, s->numpoints - 1i);
t3 = pow(frac_time, s->numpoints - 1); t3 = pow(frac_time, s->numpoints - 1i);
for (i=0; i<s->numpoints; i++) for (i=0; i<s->numpoints; i++)
{ {
if (i == 0) if (i == 0i)
{ {
r = s->pos[i] * t2; r = s->pos[i] * t2;
} }
else if (i == s->numpoints - 1) else if (i == s->numpoints - 1i)
{ {
r = r + s->pos[i] * t3; r = r + s->pos[i] * t3;
} }
else else
{ {
t4 = (s->numpoints-1) * pow(frac_time, i) * pow(t1, s->numpoints - 1 - i); t4 = (s->numpoints-1i) * pow(frac_time, i) * pow(t1, s->numpoints - 1i - i);
r = r + s->pos[i] * t4; r = r + s->pos[i] * t4;
} }
} }
@ -291,7 +311,7 @@ vector(spline_t *s, float frac_time) spline_calculate_position =
{ {
// getting the start point -- might change if we add times to points // getting the start point -- might change if we add times to points
// first point is always an entry point last point also // first point is always an entry point last point also
t5 = 1 / (s->numpoints - 3); t5 = 1 / (float)(s->numpoints - 3i);
for (i=1, t4=t5; t4<frac_time; t4 = t4 + t5) for (i=1, t4=t5; t4<frac_time; t4 = t4 + t5)
{ {
i++; i++;
@ -420,30 +440,30 @@ void(float attime) spline_overrides =
if (camdata->view_count == 0 || camdata->view_count < 0 || camdata->view_count > 64) if (camdata->view_count == 0 || camdata->view_count < 0 || camdata->view_count > 64)
return; return;
for (i=0; i < camdata->position_count; i++) for (i=0i; i < camdata->position_count; i=i+1i)
{ {
cpos = &camdata->position[i]; cpos = &camdata->position[i];
if (cpos->starttime <= attime && cpos->stoptime >= attime) if (cpos->starttime <= attime && cpos->stoptime > attime)
break; break;
} }
if (i == camdata->position_count) if (i == camdata->position_count)
return; return;
for (i=0; i < camdata->view_count; i++) for (i=0i; i < camdata->view_count; i=i+1i)
{ {
cview = &camdata->view[i]; cview = &camdata->view[i];
if (cview->starttime <= attime && cview->stoptime >= attime) if (cview->starttime <= attime && cview->stoptime > attime)
break; break;
} }
if (i == camdata->view_count) if (i == camdata->view_count)
return; return;
stime = (attime - cpos->starttime) / (cpos->starttime - cpos->starttime); stime = (attime - cpos->starttime) / (cpos->stoptime - cpos->starttime);
position = spline_calculate_position(&cpos->spline, stime); position = spline_calculate_position(&cpos->spline, stime);
stime = (attime - cview->starttime) / (cview->starttime - cview->starttime); stime = (attime - cview->starttime) / (cview->stoptime - cview->starttime);
view = spline_calculate_position(&cview->spline, stime); view = spline_calculate_position(&cview->spline, stime);
setviewprop(VF_ORIGIN, position); setviewprop(VF_ORIGIN, position);