Add CCMD addlightprobe and support simple binding of light probes to sides+sectors

src/rendering/hwrenderer/doom_lightprobes.cpp

@@ -0,0 +1,102 @@
+#include "c_dispatch.h"
+#include "g_levellocals.h"
+
+static int FindClosestProbe(FVector3 pos)
+{
+	float bestDist = std::numeric_limits<float>::max();
+	int best = 0;
+
+	for (int i = 0, size = level.lightProbes.size(); i < size; ++i)
+	{
+		const auto& probe = level.lightProbes[i];
+
+		const auto probeDist = (probe.position - pos).LengthSquared();
+
+		if (probeDist < bestDist)
+		{
+			best = i;
+			bestDist = probeDist;
+		}
+	}
+
+	return best;
+}
+
+static void RecalculateLightProbeTargets()
+{
+	for (int i = 0, size = level.sectors.size(); i < size; ++i)
+	{
+		auto& sector = level.sectors[i];
+		const auto origin = FVector3(sector.centerspot.X, sector.centerspot.Y, float(sector.floorplane.ZatPoint(sector.centerspot) + 64.0));
+
+		sector.lightProbe.index = FindClosestProbe(origin);
+	}
+
+	for (int i = 0, size = level.sides.size(); i < size; ++i)
+	{
+		auto& side = level.sides[i];
+
+		const auto sector = side.sector;
+
+		if (!sector) // better safe than sorry
+		{
+			continue;
+		}
+
+		const auto xy = side.linedef->v1->fPos() + side.linedef->delta * 0.5;
+		const auto origin = FVector3(xy.X, xy.Y, float(sector->floorplane.ZatPoint(sector->centerspot) + 64.0));
+
+		side.lightProbe.index = FindClosestProbe(origin);
+	}
+}
+
+static void DumpLightProbeTargets()
+{
+	for (int i = 0, size = level.sectors.size(); i < size; ++i)
+	{
+		const auto& sector = level.sectors[i];
+		Printf("Sector %d = %d\n", i, sector.lightProbe.index);
+	}
+
+	for (int i = 0, size = level.sides.size(); i < size; ++i)
+	{
+		const auto& side = level.sides[i];
+		Printf("Side %d = %d\n", i, side.lightProbe.index);
+	}
+}
+
+static void DumpLightProbes()
+{
+	for (int i = 0, size = level.lightProbes.size(); i < size; ++i)
+	{
+		const auto& probe = level.lightProbes[i];
+		Printf("Probe %d: (%.1f, %.1f, %.1f)\n", i, probe.position.X, probe.position.Y, probe.position.Z);
+	}
+}
+
+static void AddLightProbe(FVector3 position)
+{
+	LightProbe probe;
+	probe.position = position;
+	probe.index = static_cast<int>(level.lightProbes.size());
+	level.lightProbes.Push(probe);
+}
+
+CCMD(dumplightprobes)
+{
+	DumpLightProbes();
+}
+
+CCMD(dumplightprobetargets)
+{
+	DumpLightProbeTargets();
+}
+
+CCMD(addlightprobe)
+{
+	const auto pos = FVector3(players[0].mo->Pos().X, players[0].mo->Pos().Y, players[0].viewz);
+	AddLightProbe(pos);
+	RecalculateLightProbeTargets();
+
+	Printf("Spawned probe at %.1f, %.1f, %.1f\n", pos.X, pos.Y, pos.Z);
+}