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- added handling for intra-sector lines to lighting code.

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This commit is contained in:
Christoph Oelckers 2018-11-06 00:47:43 +01:00
parent ba66c0c889
commit 87973ff504
3 changed files with 56 additions and 45 deletions
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41
src/g_shared/a_dynlight.cpp
View file

@ -527,20 +527,20 @@ static FLightNode * DeleteLightNode(FLightNode * node)
//
//==========================================================================
double ADynamicLight::DistToSeg(const DVector3 &pos, FSectionLine *segment)
double ADynamicLight::DistToSeg(const DVector3 &pos, vertex_t *start, vertex_t *end)
{
double u, px, py;
double seg_dx = segment->end->fX() - segment->start->fX();
double seg_dy = segment->end->fY() - segment->start->fY();
double seg_dx = end->fX() - start->fX();
double seg_dy = end->fY() - start->fY();
double seg_length_sq = seg_dx * seg_dx + seg_dy * seg_dy;
u = (((pos.X - segment->start->fX()) * seg_dx) + (pos.Y - segment->start->fY()) * seg_dy) / seg_length_sq;
u = (((pos.X - start->fX()) * seg_dx) + (pos.Y - start->fY()) * seg_dy) / seg_length_sq;
if (u < 0.) u = 0.; // clamp the test point to the line segment
else if (u > 1.) u = 1.;
px = segment->start->fX() + (u * seg_dx);
py = segment->start->fY() + (u * seg_dy);
px = start->fX() + (u * seg_dx);
py = start->fY() + (u * seg_dy);
px -= pos.X;
py -= pos.Y;
@ -572,26 +572,19 @@ void ADynamicLight::CollectWithinRadius(const DVector3 &opos, FSection *section,
bool hitonesidedback = false;
for (unsigned i = 0; i < collected_ss.Size(); i++)
{
auto &pos = collected_ss[i].pos;
section = collected_ss[i].sect;
touching_sector = AddLightNode(&section->lighthead, section, this, touching_sector);
for (auto &segment : section->segments)
{
auto &pos = collected_ss[i].pos;
// check distance from x/y to seg and if within radius add this seg and, if present the opposing subsector (lather/rinse/repeat)
// If out of range we do not need to bother with this seg.
if (DistToSeg(pos, &segment) <= radius)
auto processSide = [&](side_t *sidedef, vertex_t *v1, vertex_t *v2)
{
if (segment.sidedef)
{
auto sidedef = segment.sidedef;
auto linedef = sidedef->linedef;
if (linedef && linedef->validcount != ::validcount)
{
// light is in front of the seg
if ((pos.Y - segment.start->fY()) * (segment.end->fX() - segment.start->fX()) + (segment.start->fX() - pos.X) * (segment.end->fY() - segment.start->fY()) <= 0)
if ((pos.Y - v1->fY()) * (v2->fX() - v1->fX()) + (v1->fX() - pos.X) * (v2->fY() - v1->fY()) <= 0)
{
linedef->validcount = ::validcount;
touching_sides = AddLightNode(&sidedef->lighthead, sidedef, this, touching_sides);
@ -619,6 +612,18 @@ void ADynamicLight::CollectWithinRadius(const DVector3 &opos, FSection *section,
}
}
}
};
for (auto &segment : section->segments)
{
// check distance from x/y to seg and if within radius add this seg and, if present the opposing subsector (lather/rinse/repeat)
// If out of range we do not need to bother with this seg.
if (DistToSeg(pos, segment.start, segment.end) <= radius)
{
auto sidedef = segment.sidedef;
if (sidedef)
{
processSide(sidedef, segment.start, segment.end);
}
auto partner = segment.partner;
@ -633,6 +638,10 @@ void ADynamicLight::CollectWithinRadius(const DVector3 &opos, FSection *section,
}
}
}
for (auto side : section->sides)
{
processSide(side, side->V1(), side->V2());
}
sector_t *sec = section->sector;
if (!sec->PortalBlocksSight(sector_t::ceiling))
{

2
src/g_shared/a_dynlight.h
View file

@ -210,7 +210,7 @@ public:
FLightNode * touching_sector;
private:
double DistToSeg(const DVector3 &pos, FSectionLine *seg);
double DistToSeg(const DVector3 &pos, vertex_t *start, vertex_t *end);
void CollectWithinRadius(const DVector3 &pos, FSection *section, float radius);
protected:

2
src/hwrenderer/data/hw_sections.cpp
View file

@ -658,6 +658,8 @@ public:
}
for (auto side : section.originalSides)
{
// This is only used for attaching lights to those sidedefs which are not part of the outline.
if (side->linedef && side->linedef->sidedef[1] && side->linedef->sidedef[0]->sector == side->linedef->sidedef[1]->sector)
group.sideMap[side->Index()] = true;
}
}