/*
Copyright (c) 2001, Loki software, inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.

Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.

Neither the name of Loki software nor the names of its contributors may be used
to endorse or promote products derived from this software without specific prior
written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT,INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "stdafx.h"

// type 1 = texture filter (name)
// type 3 = entity filter (name)
// type 2 = QER_* shader flags
// type 4 = entity classes
// type 5 = surface flags (q2)
// type 6 = content flags (q2)
// type 7 = content flags - no match (q2)
bfilter_t *FilterAdd(bfilter_t *pFilter, int type, int bmask, const char *str, int exclude)
{
	bfilter_t *pNew = new bfilter_t;
	pNew->next = pFilter;
	pNew->attribute = type;
	if (type == 1 || type == 3) pNew->string = str;
	if (type == 2 || type == 4 || type == 5 || type == 6 || type == 7) pNew->mask = bmask;
	if (g_qeglobals.d_savedinfo.exclude & exclude)
		pNew->active = true;
	else
		pNew->active = false;
	return pNew;
}

bfilter_t *FilterCreate (int type, int bmask, const char *str, int exclude)
{
	g_qeglobals.d_savedinfo.filters = FilterAdd(g_qeglobals.d_savedinfo.filters, type, bmask, str, exclude);
	Syn_Printf("Added filter %s (type: %i, bmask: %i, exclude: %i)\n", str, type, bmask, exclude);
	return g_qeglobals.d_savedinfo.filters;
}

extern void PerformFiltering();

void FiltersActivate (void)
{
	PerformFiltering();
	Sys_UpdateWindows(W_XY|W_CAMERA);
}

  // removes the filter list at *pFilter, returns NULL pointer
bfilter_t *FilterListDelete(bfilter_t *pFilter)
{
	if (pFilter != NULL)
	{
		FilterListDelete(pFilter->next);
		delete pFilter;
	}
	return NULL;
}


 //spog - FilterUpdate is called each time the filters are changed by menu or shortcuts
bfilter_t *FilterUpdate(bfilter_t *pFilter)
{
	pFilter = FilterAdd(pFilter,1,0,"clip",EXCLUDE_CLIP);
	pFilter = FilterAdd(pFilter,1,0,"caulk",EXCLUDE_CAULK);
	pFilter = FilterAdd(pFilter,1,0,"liquids",EXCLUDE_LIQUIDS);
 	pFilter = FilterAdd(pFilter,1,0,"hint",EXCLUDE_HINTSSKIPS);
	pFilter = FilterAdd(pFilter,1,0,"clusterportal",EXCLUDE_CLUSTERPORTALS);
	pFilter = FilterAdd(pFilter,1,0,"areaportal",EXCLUDE_AREAPORTALS);
	pFilter = FilterAdd(pFilter,2,QER_TRANS,NULL,EXCLUDE_TRANSLUCENT);
	pFilter = FilterAdd(pFilter,3,0,"trigger",EXCLUDE_TRIGGERS);
	pFilter = FilterAdd(pFilter,3,0,"misc_model",EXCLUDE_MODELS);
	pFilter = FilterAdd(pFilter,3,0,"misc_gamemodel",EXCLUDE_MODELS);
	pFilter = FilterAdd(pFilter,4,ECLASS_LIGHT,NULL,EXCLUDE_LIGHTS);
	pFilter = FilterAdd(pFilter,4,ECLASS_PATH,NULL,EXCLUDE_PATHS);
	pFilter = FilterAdd(pFilter,1,0,"lightgrid",EXCLUDE_LIGHTGRID);
	pFilter = FilterAdd(pFilter,1,0,"botclip",EXCLUDE_BOTCLIP);
  pFilter = FilterAdd(pFilter,1,0,"clipmonster",EXCLUDE_BOTCLIP);
	return pFilter;
}

/*
==================
FilterBrush
==================
*/

bool FilterBrush(brush_t *pb)
{

	if (!pb->owner)
		return FALSE;		// during construction

	if (pb->hiddenBrush)
		return TRUE;

	if (g_qeglobals.d_savedinfo.exclude & EXCLUDE_WORLD)
	{
		if (strcmp(pb->owner->eclass->name, "worldspawn") == 0 || !strcmp(pb->owner->eclass->name,"func_group")) // hack, treating func_group as world
		{
			return TRUE;
		}
	}

	if (g_qeglobals.d_savedinfo.exclude & EXCLUDE_ENT)
	{
		if (strcmp(pb->owner->eclass->name, "worldspawn") != 0 && strcmp(pb->owner->eclass->name,"func_group")) // hack, treating func_group as world
		{
			return TRUE;
		}
	}

	if ( g_qeglobals.d_savedinfo.exclude & EXCLUDE_CURVES )
	{
		if (pb->patchBrush)
		{
			return TRUE;
		}
	}


	if ( g_qeglobals.d_savedinfo.exclude & EXCLUDE_DETAILS )
	{
		if (!pb->patchBrush && pb->brush_faces->texdef.contents & CONTENTS_DETAIL )
		{
			return TRUE;
		}
	}
	if ( g_qeglobals.d_savedinfo.exclude & EXCLUDE_STRUCTURAL )
	{
		if (!pb->patchBrush && !( pb->brush_faces->texdef.contents & CONTENTS_DETAIL ))
		{
			return TRUE;
		}
	}

	// if brush belongs to world entity or a brushmodel entity and is not a patch
	if ( ( strcmp(pb->owner->eclass->name, "worldspawn") == 0
		|| !strncmp( pb->owner->eclass->name, "func", 4)
		|| !strncmp( pb->owner->eclass->name, "trigger", 7) ) && !pb->patchBrush )
	{
		bool filterbrush = false;
		for (face_t *f=pb->brush_faces;f!=NULL;f = f->next)
		{
			filterbrush=false;
			for (bfilter_t *filters = g_qeglobals.d_savedinfo.filters;
			filters != NULL;
			filters = filters->next)
			{
				if (!filters->active)
					continue;
				// exclude by attribute 1 brush->face->pShader->getName()
				if (filters->attribute == 1)
				{
					if (strstr(f->pShader->getName(),filters->string))
					{
						filterbrush=true;
						break;
					}
				}
				// exclude by attribute 2 brush->face->pShader->getFlags()
				else if (filters->attribute == 2)
				{
					if (f->pShader->getFlags() & filters->mask)
					{
						filterbrush=true;
						break;
					}
				// quake2 - 5 == surface flags, 6 == content flags
				}
				else if (filters->attribute == 5)
				{
					if (f->texdef.flags && f->texdef.flags & filters->mask)
					{
						filterbrush=true;
						break;
					}
				}
				else if (filters->attribute == 6)
				{
					if (f->texdef.contents && f->texdef.contents & filters->mask)
					{
						filterbrush=true;
						break;
					}
				}
				else if (filters->attribute == 7)
				{
					if (f->texdef.contents && !(f->texdef.contents & filters->mask))
					{
						filterbrush=true;
						break;
					}
				}
			}
			if (!filterbrush)
				break;
		}
		if (filterbrush)// if no face is found that should not be excluded
			return true; // exclude this brush
	}

	// if brush is a patch
	if ( pb->patchBrush )
	{
		bool drawpatch=true;
		for (bfilter_t *filters = g_qeglobals.d_savedinfo.filters;
		filters != NULL;
		filters = filters->next)
		{
			// exclude by attribute 1 (for patch) brush->pPatch->pShader->getName()
			if (filters->active
				&& filters->attribute == 1)
			{
				if (strstr(pb->pPatch->pShader->getName(),filters->string))
				{
					drawpatch=false;
					break;
				}
			}

			// exclude by attribute 2 (for patch) brush->pPatch->pShader->getFlags()
			if (filters->active
				&& filters->attribute == 2)
			{
				if (pb->pPatch->pShader->getFlags() & filters->mask)
				{
					drawpatch=false;
					break;
				}
			}
		}
		if (!drawpatch) // if a shader is found that should be excluded
			return TRUE; // exclude this patch
	}

	if (strcmp(pb->owner->eclass->name, "worldspawn") != 0) // if brush does not belong to world entity
	{
		bool drawentity=true;
		for (bfilter_t *filters = g_qeglobals.d_savedinfo.filters;
		filters != NULL;
		filters = filters->next)
		{
			// exclude by attribute 3 brush->owner->eclass->name
			if (filters->active
				&& filters->attribute == 3)
			{
				if (strstr(pb->owner->eclass->name,filters->string))
				{
					drawentity=false;
					break;
				}
			}

			// exclude by attribute 4 brush->owner->eclass->nShowFlags
			else if (filters->active
				&& filters->attribute == 4)
			{
				if ( pb->owner->eclass->nShowFlags & filters->mask )
				{
					drawentity=false;
					break;
				}
			}
		}
		if (!drawentity) // if an eclass property is found that should be excluded
			return TRUE; // exclude this brush
	}
	return FALSE;
}