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Add support for returning the closest point in the sector to getsectordist()

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git-svn-id: https://svn.eduke32.com/eduke32@7609 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2019-04-19 08:31:47 +00:00 committed by Christoph Oelckers
parent 8d85e8d934
commit 60ea578a8c
2 changed files with 25 additions and 10 deletions
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4
source/build/include/build.h
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@ -1176,8 +1176,8 @@ int32_t try_facespr_intersect(uspriteptr_t const spr, const vec3_t *refpos,
int findwallbetweensectors(int sect1, int sect2);
static FORCE_INLINE bool sectoradjacent(int sect1, int sect2) { return findwallbetweensectors(sect1, sect2) != -1; }
int32_t getwalldist(vec2_t const &p, int const wallnum, vec2_t * const output = nullptr);
int32_t getsectordist(vec2_t const &p, int const sectnum);
int32_t getwalldist(vec2_t const &in, int const wallnum, vec2_t * const out = nullptr);
int32_t getsectordist(vec2_t const &in, int const sectnum, vec2_t * const out = nullptr);
extern const int16_t *chsecptr_onextwall;
int32_t checksectorpointer(int16_t i, int16_t sectnum);

31
source/build/src/engine.cpp
View file

@ -10964,18 +10964,23 @@ static inline bool inside_z_p(int32_t const x, int32_t const y, int32_t const z,
return (z >= cz && z <= fz && inside_p(x, y, sectnum));
}
int32_t getwalldist(vec2_t const &pos, int const wallnum, vec2_t * const output)
int32_t getwalldist(vec2_t const &in, int const wallnum, vec2_t * const out /*= nullptr*/)
{
vec2_t closest;
getclosestpointonwall_internal(pos, wallnum, &closest);
if (output) *output = closest;
return klabs(closest.x - pos.x) + klabs(closest.y - pos.y);
getclosestpointonwall_internal(in, wallnum, &closest);
if (out)
*out = closest;
return klabs(closest.x - in.x) + klabs(closest.y - in.y);
}
int32_t getsectordist(vec2_t const &pos, int const sectnum)
int32_t getsectordist(vec2_t const &in, int const sectnum, vec2_t * const out /*= nullptr*/)
{
if (inside_p(pos.x, pos.y, sectnum))
if (inside_p(in.x, in.y, sectnum))
{
if (out)
*out = in;
return 0;
}
int32_t distance = INT32_MAX;
@ -10983,13 +10988,23 @@ int32_t getsectordist(vec2_t const &pos, int const sectnum)
int const startwall = sec->wallptr;
int const endwall = sec->wallptr + sec->wallnum;
auto uwal = (uwallptr_t)&wall[startwall];
vec2_t closest = {};
for (int j = startwall; j < endwall; j++, uwal++)
{
int32_t const walldist = getwalldist(pos, j);
distance = min(walldist, distance);
vec2_t p;
int32_t const walldist = getwalldist(in, j, &p);
if (walldist < distance)
{
distance = walldist;
closest = p;
}
}
if (out)
*out = closest;
return distance;
}