Add light probe support for sprites

src/g_level.cpp

@@ -2283,3 +2283,26 @@ void FLevelLocals::SetMusic()
 	S_ChangeMusic(Music, musicorder);
 }
 
+void FLevelLocals::GetLightProbeLight(float x, float y, float z, float* out)
+{
+	out[0] = out[1] = out[2] = 0.f;
+
+	// To do: Pretty stupid algorithm. Use something better once we confirmed this looks alright.
+
+	float lastdist = 0.0f;
+	for (unsigned int i = 0; i < LightProbes.Size(); i++)
+	{
+		const LightProbe& probe = LightProbes[i];
+		float dx = probe.X - x;
+		float dy = probe.Y - y;
+		float dz = probe.Z - z;
+		float dist = dx * dx + dy * dy + dz * dz;
+		if (i == 0 || dist < lastdist)
+		{
+			out[0] = probe.Red;
+			out[1] = probe.Green;
+			out[2] = probe.Blue;
+			lastdist = dist;
+		}
+	}
+}