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player.c: return early from various P_Display*() if player's *incs are oob.

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git-svn-id: https://svn.eduke32.com/eduke32@3436 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2013-01-26 17:07:48 +00:00
parent ba8c6e487d
commit 9d7d58d678
1 changed files with 12 additions and 9 deletions
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21
polymer/eduke32/source/player.c
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@ -1889,6 +1889,8 @@ static void G_DrawWeaponTile(int32_t x, int32_t y, int32_t tilenum, int32_t shad
}
}
#define ARRAY_SIZE(Ar) (sizeof(Ar)/sizeof((Ar)[0]))
static int32_t P_DisplayKnee(int32_t gs,int32_t snum)
{
static const int8_t knee_y[] = {0,-8,-16,-32,-64,-84,-108,-108,-108,-72,-32,-8};
@ -1896,7 +1898,8 @@ static int32_t P_DisplayKnee(int32_t gs,int32_t snum)
const DukePlayer_t *const ps = g_player[snum].ps;
if (ps->knee_incs > 11 || ps->knee_incs == 0 || sprite[ps->i].extra <= 0) return 0;
if (ps->knee_incs == 0 || ps->knee_incs >= ARRAY_SIZE(knee_y) || sprite[ps->i].extra <= 0)
return 0;
looking_arc = knee_y[ps->knee_incs] + klabs(ps->look_ang)/9;
@ -1919,7 +1922,8 @@ static int32_t P_DisplayKnuckles(int32_t gs,int32_t snum)
const DukePlayer_t *const ps = g_player[snum].ps;
if (ps->knuckle_incs == 0 || sprite[ps->i].extra <= 0) return 0;
if (ps->knuckle_incs == 0 || ps->knuckle_incs >= ARRAY_SIZE(knuckle_frames) || sprite[ps->i].extra <= 0)
return 0;
looking_arc = klabs(ps->look_ang)/9;
@ -2041,7 +2045,7 @@ void P_DisplayScuba(int32_t snum)
static int32_t P_DisplayTip(int32_t gs,int32_t snum)
{
int32_t p,looking_arc, i, tipy;
int32_t p,looking_arc, tipy;
static const int16_t tip_y[] = {
0,-8,-16,-32,-64,
@ -2053,7 +2057,8 @@ static int32_t P_DisplayTip(int32_t gs,int32_t snum)
const DukePlayer_t *const ps = g_player[snum].ps;
if (ps->tipincs == 0) return 0;
if (ps->tipincs == 0 || ps->tipincs >= ARRAY_SIZE(tip_y))
return 0;
looking_arc = klabs(ps->look_ang)/9;
looking_arc -= (ps->hard_landing<<3);
@ -2066,10 +2071,7 @@ static int32_t P_DisplayTip(int32_t gs,int32_t snum)
p = wall[ps->access_wallnum].pal;
*/
// FIXME?
// OOB access of tip_y[] happens in 'Spider Den' of WGR2 SVN r72
i = ps->tipincs;
tipy = ((unsigned)i < sizeof(tip_y)/sizeof(tip_y[0])) ? (tip_y[i]>>1) : 0;
tipy = tip_y[ps->tipincs]>>1;
G_DrawTileScaled(170+(g_player[snum].sync->avel>>4)-(ps->look_ang>>1),
tipy+looking_arc+240-((ps->horiz-ps->horizoff)>>4),
@ -2091,7 +2093,8 @@ static int32_t P_DisplayAccess(int32_t gs,int32_t snum)
int32_t looking_arc, p = 0;
const DukePlayer_t *const ps = g_player[snum].ps;
if (ps->access_incs == 0 || sprite[ps->i].extra <= 0) return 0;
if (ps->access_incs == 0 || ps->access_incs >= ARRAY_SIZE(access_y) || sprite[ps->i].extra <= 0)
return 0;
looking_arc = access_y[ps->access_incs] + klabs(ps->look_ang)/9 -
(ps->hard_landing<<3);