C++ (Cpp) CalcFracPos Examples

Example #1

File: a_decals.cpp Project: WChrisK/Zandronum

// Returns the texture the decal stuck to.
FTextureID DBaseDecal::StickToWall (side_t *wall, fixed_t x, fixed_t y, F3DFloor *ffloor)
{
	// Stick the decal at the end of the chain so it appears on top
	DBaseDecal *next, **prev;

	prev = &wall->AttachedDecals;
	while (*prev != NULL)
	{
		next = *prev;
		prev = &next->WallNext;
	}

	*prev = this;
	WallNext = NULL;
	WallPrev = prev;
/*
	WallNext = wall->AttachedDecals;
	WallPrev = &wall->AttachedDecals;
	if (WallNext)
		WallNext->WallPrev = &WallNext;
	wall->AttachedDecals = this;
*/
	sector_t *front, *back;
	line_t *line;
	FTextureID tex;

	line = wall->linedef;
	if (line->sidedef[0] == wall)
	{
		front = line->frontsector;
		back = line->backsector;
	}
	else
	{
		front = line->backsector;
		back = line->frontsector;
	}
	if (back == NULL)
	{
		RenderFlags |= RF_RELMID;
		if (line->flags & ML_DONTPEGBOTTOM)
			Z -= front->GetPlaneTexZ(sector_t::floor);
		else
			Z -= front->GetPlaneTexZ(sector_t::ceiling);
		tex = wall->GetTexture(side_t::mid);
	}
	else if (back->floorplane.ZatPoint (x, y) >= Z)
	{
		RenderFlags |= RF_RELLOWER|RF_CLIPLOWER;
		if (line->flags & ML_DONTPEGBOTTOM)
			Z -= front->GetPlaneTexZ(sector_t::ceiling);
		else
			Z -= back->GetPlaneTexZ(sector_t::floor);
		tex = wall->GetTexture(side_t::bottom);
	}
	else if (back->ceilingplane.ZatPoint (x, y) <= Z)
	{
		RenderFlags |= RF_RELUPPER|RF_CLIPUPPER;
		if (line->flags & ML_DONTPEGTOP)
			Z -= front->GetPlaneTexZ(sector_t::ceiling);
		else
			Z -= back->GetPlaneTexZ(sector_t::ceiling);
		tex = wall->GetTexture(side_t::top);
	}
#ifdef _3DFLOORS
	else if (ffloor) // this is a 3d-floor segment - do this only if we know which one!
	{
		Sector=ffloor->model;
		RenderFlags |= RF_RELMID|RF_CLIPMID;
		if (line->flags & ML_DONTPEGBOTTOM)
			Z -= Sector->GetPlaneTexZ(sector_t::floor);
		else
			Z -= Sector->GetPlaneTexZ(sector_t::ceiling);

		if (ffloor->flags & FF_UPPERTEXTURE)
		{
			tex = wall->GetTexture(side_t::top);
		}
		else if (ffloor->flags & FF_LOWERTEXTURE)
		{
			tex = wall->GetTexture(side_t::bottom);
		}
		else
		{
			tex = ffloor->master->sidedef[0]->GetTexture(side_t::mid);
		}
	}
#endif
	else return FNullTextureID();
	CalcFracPos (wall, x, y);

	FTexture *texture = TexMan[tex];

	if (texture == NULL || texture->bNoDecals)
	{
		return FNullTextureID();
	}

	return tex;
}

Example #2

File: a_decals.cpp Project: ArcticPheenix/gzdoom

// Returns the texture the decal stuck to.
FTextureID DBaseDecal::StickToWall (side_t *wall, double x, double y, F3DFloor *ffloor)
{
	Side = wall;
	WallPrev = wall->AttachedDecals;

	while (WallPrev != nullptr && WallPrev->WallNext != nullptr)
	{
		WallPrev = WallPrev->WallNext;
	}
	if (WallPrev != nullptr) WallPrev->WallNext = this;
	else wall->AttachedDecals = this;
	WallNext = nullptr;


	sector_t *front, *back;
	line_t *line;
	FTextureID tex;

	line = wall->linedef;
	if (line->sidedef[0] == wall)
	{
		front = line->frontsector;
		back = line->backsector;
	}
	else
	{
		front = line->backsector;
		back = line->frontsector;
	}
	if (back == NULL)
	{
		RenderFlags |= RF_RELMID;
		if (line->flags & ML_DONTPEGBOTTOM)
			Z -= front->GetPlaneTexZ(sector_t::floor);
		else
			Z -= front->GetPlaneTexZ(sector_t::ceiling);
		tex = wall->GetTexture(side_t::mid);
	}
	else if (back->floorplane.ZatPoint (x, y) >= Z)
	{
		RenderFlags |= RF_RELLOWER|RF_CLIPLOWER;
		if (line->flags & ML_DONTPEGBOTTOM)
			Z -= front->GetPlaneTexZ(sector_t::ceiling);
		else
			Z -= back->GetPlaneTexZ(sector_t::floor);
		tex = wall->GetTexture(side_t::bottom);
	}
	else if (back->ceilingplane.ZatPoint (x, y) <= Z)
	{
		RenderFlags |= RF_RELUPPER|RF_CLIPUPPER;
		if (line->flags & ML_DONTPEGTOP)
			Z -= front->GetPlaneTexZ(sector_t::ceiling);
		else
			Z -= back->GetPlaneTexZ(sector_t::ceiling);
		tex = wall->GetTexture(side_t::top);
	}
	else if (ffloor) // this is a 3d-floor segment - do this only if we know which one!
	{
		Sector=ffloor->model;
		RenderFlags |= RF_RELMID|RF_CLIPMID;
		if (line->flags & ML_DONTPEGBOTTOM)
			Z -= Sector->GetPlaneTexZ(sector_t::floor);
		else
			Z -= Sector->GetPlaneTexZ(sector_t::ceiling);

		if (ffloor->flags & FF_UPPERTEXTURE)
		{
			tex = wall->GetTexture(side_t::top);
		}
		else if (ffloor->flags & FF_LOWERTEXTURE)
		{
			tex = wall->GetTexture(side_t::bottom);
		}
		else
		{
			tex = ffloor->master->sidedef[0]->GetTexture(side_t::mid);
		}
	}
	else return FNullTextureID();
	CalcFracPos (wall, x, y);

	FTexture *texture = TexMan[tex];

	if (texture == NULL || texture->bNoDecals)
	{
		return FNullTextureID();
	}

	return tex;
}