public int RecursiveLightPoint(int idx_node, Vector3 start, Vector3 end)
{
float front;
float back;
float frac;
int side;
CShared.SCPlane plane;
Vector3 mid;
int surf;
int s, t;
int ds, dt;
CModel.SMTexInfo tex;
int lightmap;
int r;
CModel.SMNode node;
node = CQ2BSP.SWorldData.nodes[idx_node];
if (node.contents != -1)
{
return(-1); // didn't hit anything
}
// calculate mid point
// FIXME: optimize for axial
plane = CQ2BSP.SWorldData.planes[node.plane];
front = Vector3.Dot(start, plane.normal) - plane.dist;
back = Vector3.Dot(end, plane.normal) - plane.dist;
side = Convert.ToInt32(front < 0);
if (Convert.ToInt32(back < 0) == side)
{
return(RecursiveLightPoint(node.children[side], start, end));
}
frac = front / (front - back);
mid.X = start.X + (end.X - start.X) * frac;
mid.Y = start.Y + (end.Y - start.Y) * frac;
mid.Z = start.Z + (end.Z - start.Z) * frac;
// go down front side
r = RecursiveLightPoint(node.children[side], start, mid);
if (r >= 0)
{
return(r); // hit something
}
if (Convert.ToInt32(back < 0) == side)
{
return(-1); // didn't hit anything
}
// check for impact on this node
lightspot.X = mid.X;
lightspot.Y = mid.Y;
lightspot.Z = mid.Z;
lightplane = plane;
surf = node.firstsurface;
for (int i = 0; i < node.numsurfaces; i++, surf++)
{
Vector3 vecs;
if ((CQ2BSP.SWorldData.surfaces[surf].flags & CModel.EMSurface.SURF_DRAWTURB) == CModel.EMSurface.SURF_DRAWTURB)
{
continue; // no lightmaps
}
if ((CQ2BSP.SWorldData.surfaces[surf].flags & CModel.EMSurface.SURF_DRAWSKY) == CModel.EMSurface.SURF_DRAWSKY)
{
continue; // no lightmaps
}
tex = CQ2BSP.SWorldData.texinfo[CQ2BSP.SWorldData.surfaces[surf].texinfo];
vecs.X = tex.vecs[0].X;
vecs.Y = tex.vecs[0].Y;
vecs.Z = tex.vecs[0].Z;
s = (int)(Vector3.Dot(mid, vecs) + tex.vecs[0].W);
vecs.X = tex.vecs[1].X;
vecs.Y = tex.vecs[1].Y;
vecs.Z = tex.vecs[1].Z;
t = (int)(Vector3.Dot(mid, vecs) + tex.vecs[1].W);
if (s < CQ2BSP.SWorldData.surfaces[surf].texturemins[0] || t < CQ2BSP.SWorldData.surfaces[surf].texturemins[1])
{
continue;
}
ds = s - CQ2BSP.SWorldData.surfaces[surf].texturemins[0];
dt = t - CQ2BSP.SWorldData.surfaces[surf].texturemins[1];
if (ds > CQ2BSP.SWorldData.surfaces[surf].extents[0] || dt > CQ2BSP.SWorldData.surfaces[surf].extents[1])
{
continue;
}
if (CQ2BSP.SWorldData.surfaces[surf].samples == -1)
{
return(0);
}
ds >>= 4;
dt >>= 4;
lightmap = CQ2BSP.SWorldData.surfaces[surf].samples;
pointcolor.X = CShared.vec3_origin.X;
pointcolor.Y = CShared.vec3_origin.Y;
pointcolor.Z = CShared.vec3_origin.Z;
if (lightmap != -1)
{
Vector3 scale;
lightmap += 3 * (dt * ((CQ2BSP.SWorldData.surfaces[surf].extents[0] >> 4) + 1) + ds);
for (int maps = 0; maps < CQ2BSP.MAXLIGHTMAPS && CQ2BSP.SWorldData.surfaces[surf].styles[maps] != 255; maps++)
{
scale = Vector3.Zero;
for (i = 0; i < 3; i++)
{
// jkrige ??
//scale.X = CLocal.gl_modulate * CClient.cl.RefDef.lightstyles[CQ2BSP.SWorldData.surfaces[surf].styles[maps]].rgb[0];
//scale.Y = CLocal.gl_modulate * CClient.cl.RefDef.lightstyles[CQ2BSP.SWorldData.surfaces[surf].styles[maps]].rgb[1];
//scale.Z = CLocal.gl_modulate * CClient.cl.RefDef.lightstyles[CQ2BSP.SWorldData.surfaces[surf].styles[maps]].rgb[2];
scale.X = 1.0f;
scale.Y = 1.0f;
scale.Z = 1.0f;
// jkrige ??
}
pointcolor.X += CQ2BSP.SWorldData.lightdata[lightmap + 0] * scale.X * (1.0f / 255);
pointcolor.Y += CQ2BSP.SWorldData.lightdata[lightmap + 1] * scale.Y * (1.0f / 255);
pointcolor.Z += CQ2BSP.SWorldData.lightdata[lightmap + 2] * scale.Z * (1.0f / 255);
lightmap += 3 * ((CQ2BSP.SWorldData.surfaces[surf].extents[0] >> 4) + 1) * ((CQ2BSP.SWorldData.surfaces[surf].extents[1] >> 4) + 1);
}
}
return(1);
}
// go down back side
return(RecursiveLightPoint(node.children[Convert.ToInt32(side == 0)], mid, end));
}
public int RecursiveLightPoint(int idx_node, Vector3 start, Vector3 end)
{
float front;
float back;
float frac;
int side;
CShared.SCPlane plane;
Vector3 mid;
int surf;
int s, t;
int ds, dt;
CModel.SMTexInfo tex;
int lightmap;
int r;
CModel.SMNode node;
node = CQ2BSP.SWorldData.nodes[idx_node];
if (node.contents != -1)
return -1; // didn't hit anything
// calculate mid point
// FIXME: optimize for axial
plane = CQ2BSP.SWorldData.planes[node.plane];
front = Vector3.Dot(start, plane.normal) - plane.dist;
back = Vector3.Dot(end, plane.normal) - plane.dist;
side = Convert.ToInt32(front < 0);
if (Convert.ToInt32(back < 0) == side)
return RecursiveLightPoint(node.children[side], start, end);
frac = front / (front - back);
mid.X = start.X + (end.X - start.X) * frac;
mid.Y = start.Y + (end.Y - start.Y) * frac;
mid.Z = start.Z + (end.Z - start.Z) * frac;
// go down front side
r = RecursiveLightPoint(node.children[side], start, mid);
if (r >= 0)
return r; // hit something
if (Convert.ToInt32(back < 0) == side)
return -1; // didn't hit anything
// check for impact on this node
lightspot.X = mid.X;
lightspot.Y = mid.Y;
lightspot.Z = mid.Z;
lightplane = plane;
surf = node.firstsurface;
for (int i = 0; i < node.numsurfaces; i++, surf++)
{
Vector3 vecs;
if ((CQ2BSP.SWorldData.surfaces[surf].flags & CModel.EMSurface.SURF_DRAWTURB) == CModel.EMSurface.SURF_DRAWTURB)
continue; // no lightmaps
if ((CQ2BSP.SWorldData.surfaces[surf].flags & CModel.EMSurface.SURF_DRAWSKY) == CModel.EMSurface.SURF_DRAWSKY)
continue; // no lightmaps
tex = CQ2BSP.SWorldData.texinfo[CQ2BSP.SWorldData.surfaces[surf].texinfo];
vecs.X = tex.vecs[0].X;
vecs.Y = tex.vecs[0].Y;
vecs.Z = tex.vecs[0].Z;
s = (int)(Vector3.Dot(mid, vecs) + tex.vecs[0].W);
vecs.X = tex.vecs[1].X;
vecs.Y = tex.vecs[1].Y;
vecs.Z = tex.vecs[1].Z;
t = (int)(Vector3.Dot(mid, vecs) + tex.vecs[1].W);
if (s < CQ2BSP.SWorldData.surfaces[surf].texturemins[0] || t < CQ2BSP.SWorldData.surfaces[surf].texturemins[1])
continue;
ds = s - CQ2BSP.SWorldData.surfaces[surf].texturemins[0];
dt = t - CQ2BSP.SWorldData.surfaces[surf].texturemins[1];
if (ds > CQ2BSP.SWorldData.surfaces[surf].extents[0] || dt > CQ2BSP.SWorldData.surfaces[surf].extents[1])
continue;
if (CQ2BSP.SWorldData.surfaces[surf].samples == -1)
return 0;
ds >>= 4;
dt >>= 4;
lightmap = CQ2BSP.SWorldData.surfaces[surf].samples;
pointcolor.X = CShared.vec3_origin.X;
pointcolor.Y = CShared.vec3_origin.Y;
pointcolor.Z = CShared.vec3_origin.Z;
if (lightmap != -1)
{
Vector3 scale;
lightmap += 3 * (dt * ((CQ2BSP.SWorldData.surfaces[surf].extents[0] >> 4) + 1) + ds);
for (int maps = 0; maps < CQ2BSP.MAXLIGHTMAPS && CQ2BSP.SWorldData.surfaces[surf].styles[maps] != 255; maps++)
{
scale = Vector3.Zero;
for (i = 0; i < 3; i++)
{
// jkrige ??
//scale.X = CLocal.gl_modulate * CClient.cl.RefDef.lightstyles[CQ2BSP.SWorldData.surfaces[surf].styles[maps]].rgb[0];
//scale.Y = CLocal.gl_modulate * CClient.cl.RefDef.lightstyles[CQ2BSP.SWorldData.surfaces[surf].styles[maps]].rgb[1];
//scale.Z = CLocal.gl_modulate * CClient.cl.RefDef.lightstyles[CQ2BSP.SWorldData.surfaces[surf].styles[maps]].rgb[2];
scale.X = 1.0f;
scale.Y = 1.0f;
scale.Z = 1.0f;
// jkrige ??
}
pointcolor.X += CQ2BSP.SWorldData.lightdata[lightmap + 0] * scale.X * (1.0f / 255);
pointcolor.Y += CQ2BSP.SWorldData.lightdata[lightmap + 1] * scale.Y * (1.0f / 255);
pointcolor.Z += CQ2BSP.SWorldData.lightdata[lightmap + 2] * scale.Z * (1.0f / 255);
lightmap += 3 * ((CQ2BSP.SWorldData.surfaces[surf].extents[0] >> 4) + 1) * ((CQ2BSP.SWorldData.surfaces[surf].extents[1] >> 4) + 1);
}
}
return 1;
}
// go down back side
return RecursiveLightPoint(node.children[Convert.ToInt32(side == 0)], mid, end);
}
