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m32: "ported" searchwall determination when aiming at floor or ceiling to polymost

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git-svn-id: https://svn.eduke32.com/eduke32@1484 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2009-08-02 20:20:26 +00:00
parent 03d92eb1d1
commit a43f31e46c
1 changed files with 40 additions and 0 deletions
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40
polymer/eduke32/build/src/polymost.c
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@ -4263,6 +4263,46 @@ void polymost_drawrooms()
if ((hitinfo.pos.z<<1) < cz+fz) searchstat = 1; else searchstat = 2;
//if (vz < 0) searchstat = 1; else searchstat = 2; //Won't work for slopes :/
}
if ((searchstat==1 || searchstat==2) && searchsector>=0)
{
int32_t scrv[2] = {(vx>>12), (vy>>12)};
int32_t scrv_r[2] = {scrv[1], -scrv[0]};
walltype *wal = &wall[sector[searchsector].wallptr];
int32_t wdistsq, bestwdistsq=0x7fffffff;
int16_t k, bestk=-1;
for (k=0; k<sector[searchsector].wallnum; k++)
{
int32_t w1[2] = {wal[k].x, wal[k].y};
int32_t w2[2] = {wall[wal[k].point2].x, wall[wal[k].point2].y};
int32_t w21[2] = {w1[0]-w2[0], w1[1]-w2[1]};
int32_t pw1[2] = {w1[0]-hitinfo.pos.x, w1[1]-hitinfo.pos.y};
int32_t pw2[2] = {w2[0]-hitinfo.pos.x, w2[1]-hitinfo.pos.y};
float w1d = (float)(scrv_r[0]*pw1[0] + scrv_r[1]*pw1[1]);
float w2d = (float)(scrv_r[0]*pw2[0] + scrv_r[1]*pw2[1]);
int32_t ptonline[2], scrp[2];
w2d = -w2d;
if ((w1d==0 && w2d==0) || (w1d<0 || w2d<0))
continue;
ptonline[0] = w2[0]+(w2d/(w1d+w2d))*w21[0];
ptonline[1] = w2[1]+(w2d/(w1d+w2d))*w21[1];
scrp[0] = ptonline[0]-vect.x;
scrp[1] = ptonline[1]-vect.y;
if (scrv[0]*scrp[0] + scrv[1]*scrp[1] <= 0)
continue;
wdistsq = scrp[0]*scrp[0] + scrp[1]*scrp[1];
if (wdistsq < bestwdistsq)
{
bestk = k;
bestwdistsq = wdistsq;
}
}
if (bestk >= 0)
searchwall = sector[searchsector].wallptr + bestk;
}
searchit = 0;
}