/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

GtkRadiant is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

// QERadiant PlugIns
//
//

#ifndef __QERPLUGIN_H__
#define __QERPLUGIN_H__

/*!
\todo this header is intended to be turned into a header for the core editor functionality
some portability related code should be moved to synapse (such as the GUID stuff)
*/

#include <stdio.h>
#include <string.h>
// TTimo
// ideally the plugin API would be UI toolkit independent, but removing the dependency with GLib seems tricky right now..
#include <glib.h>
#include "qertypes.h"

// FIXME TTimo:
// GUID declaration here should be trashed, it is in synapse.h
#ifdef _WIN32
#include <wtypes.h>
#endif

#define QER_MAX_NAMELEN 1024

#ifndef _WIN32
#include "misc_def.h"
#endif

// the editor will look for plugins in two places, the plugins path 
// under the application path, and the path under the basepath as defined
// in the project (.qe4) file.
//
// you can drop any number of new texture, model format DLL's in the standard plugin path
// but only one plugin that overrides map loading/saving, surface dialog, surface flags, etc.. 
// should be used at one time.. if multiples are loaded then the last one loaded will be the 
// active one
//
// type of services the plugin supplies, pass any combo of these flags
// it is assumed the plugin will have a matching function as defined below
// to correlate to the implied functionality
// 

#define RADIANT_MAJOR "radiant"

// basics
#define QERPLUG_INIT "QERPlug_Init"
#define QERPLUG_GETNAME "QERPlug_GetName"
#define QERPLUG_GETCOMMANDLIST "QERPlug_GetCommandList"
#define QERPLUG_DISPATCH "QERPlug_Dispatch"
#define QERPLUG_GETFUNCTABLE "QERPlug_GetFuncTable"

// game stuff
#define QERPLUG_GETTEXTUREINFO "QERPlug_GetTextureInfo"   // gets a texture info structure
#define QERPLUG_LOADTEXTURE    "QERPlug_LoadTexture"      // loads a texture, will return an RGBA structure
                                                          // and any surface flags/contents for it
#define QERPLUG_GETSURFACEFLAGS "QERPlug_GetSurfaceFlags" // gets a list of surface/content flag names from a plugin

struct _QERTextureInfo
{
  char m_TextureExtension[QER_MAX_NAMELEN];   // the extension these textures have
  qboolean m_bHiColor;    // if textures are NOT high color, the default 
                      // palette (as described inthe qe4 file will be used for gamma correction)
                      // if they are high color, gamma and shading are computed on the fly 
                      // based on the rgba data
  //--bool m_bIsShader;   // will probably do q3 shaders this way when i merge
  qboolean m_bWadStyle;   // if this is true, the plugin will be presented with the texture path
                      // defined in the .qe4 file and is expected to preload all the textures
  qboolean m_bHalfLife;   // causes brushes to be saved/parsed without the surface contents/flags/value
};

struct _QERTextureLoad    // returned by a plugin
{
  _QERTextureLoad()
  { 
    memset(reinterpret_cast<void*>(this), 0, sizeof(_QERTextureLoad));
  };

  ~_QERTextureLoad()
  {
    delete []m_pRGBA;
    delete []m_pName;
  };

  void makeSpace(int nSize)
  {
    m_pRGBA = new unsigned char[nSize+1];
  };

  void setName(const char* p)
  {
    m_pName = new char[strlen(p)+1];
    strcpy(m_pName, p);
  };


  unsigned char *m_pRGBA; // rgba data (alpha channel is supported and drawn appropriately)
  int m_nWidth;           // width
  int m_nHeight;          // height
  int m_nContents;        // default contents
  int m_nFlags;           // "" flags
  int m_nValue;           // "" value
  char *m_pName;          // name to be referenced in map, build tools, etc.
};

struct _QERModelInfo
{
  char m_ModelExtension[QER_MAX_NAMELEN];
  bool m_bSkinned;
  bool m_bMultipart;
};

struct _QERModelLoad
{
  // vertex and skin data
};


//=========================================
// plugin functions
#if 0
// NOTE TTimo: hack to make old plugin tech and new plugin tech live together
#ifndef _IPLUGIN_H_
// toolkit-independant interface, cast hwndMain to GtkWidget*
typedef const char* (WINAPI *PFN_QERPLUG_INIT)(void* hApp, void* hwndMain);
typedef const char* (WINAPI *PFN_QERPLUG_GETNAME)();
typedef const char* (WINAPI *PFN_QERPLUG_GETCOMMANDLIST)();
typedef void  (WINAPI *PFN_QERPLUG_DISPATCH)(const char* p, vec3_t vMin, vec3_t vMax, bool bSingleBrush);
#endif
#endif

typedef char* (WINAPI *PFN_QERPLUG_GETFUNCTABLE)();

// v1.5
//
// Texture loading
// returns a ptr to _QERTextureInfo
typedef void* (WINAPI *PFN_QERPLUG_GETTEXTUREINFO)();
//
// loads a texture by calling the texture load func in the editor (defined below)
// transparency (for water, fog, lava, etc.. ) can be emulated in the editor
// by passing in appropriate alpha data or by setting the appropriate surface flags
// expected by q2 (which the editor will use.. )
typedef void (WINAPI *PFN_QERPLUG_LOADTEXTURE)(const char* pFilename); 

// v1.6
typedef void* (WINAPI *PFN_QERPLUG_GETSURFACEFLAGS)();

// v1.7
// if exists in plugin, gets called between INIT and GETCOMMANDLIST
// the plugin can register the EClasses he wants to handle
//++timo TODO: this has got to move into the table, and be requested by QERPlug_RequestInterface
//++timo FIXME: the LPVOID parameter must be casted to an IEpair interface
#define QERPLUG_REGISTERPLUGINENTITIES "QERPlug_RegisterPluginEntities"
typedef void (WINAPI * PFN_QERPLUG_REGISTERPLUGINENTITIES)( void* );

// if exists in plugin, gets called between INIT and GETCOMMANDLIST
// the plugin can Init all it needs for surface properties
#define QERPLUG_INITSURFACEPROPERTIES "QERPlug_InitSurfaceProperties"
typedef void (WINAPI * PFN_QERPLUG_INITSURFACEPROPERTIES)();

// if Radiant needs to use a particular set of commands, it can request the plugin to fill a func table
// this is similar to PFN_QERAPP_REQUESTINTERFACE
#define QERPLUG_REQUESTINTERFACE "QERPlug_RequestInterface"
typedef int (WINAPI * PFN_QERPLUG_REQUESTINTERFACE) (REFGUID refGUID, void* pInterface, const char *version_name);

// Load an image file
typedef void (* PFN_QERAPP_LOADIMAGE) (const char *name, unsigned char **pic, int *width, int *height);

// TTimo FIXME: the logic for this is in synapse now

// MODULES specific:
// if it exports this entry point, will be considered as a module
// a module is a plugin that provides some REQUIRED interfaces to Radiant, such as the shader module
// Radiant will call QERPLUG_LISTINTERFACES to get a list of the interfaces a given plugin implements
// then it will call PFN_QERPLUG_REQUESTINTERFACE to actually get them

// following leo's code .. looks ok to use a string to identify the various versions of a same interface
// obviously it would be handy to have the same string naming for the interfaces.
// best way would be to have the names come in when you list the interfaces
// NOTE: we might have a problem with the order in which the interfaces are filled in
//   there's some kind of dependency graph, the shader module expects to find the VFS ready etc.
typedef struct moduleentry_s {
  const GUID *interface_GUID;
  const char* interface_name;
  const char* version_name; 
} moduleentry_t;

#define QERPLUG_LISTINTERFACES "QERPlug_ListInterfaces"
#define MAX_QERPLUG_INTERFACES 10
typedef int (WINAPI* PFN_QERPLUG_LISTINTERFACES) (moduleentry_t table[MAX_QERPLUG_INTERFACES]);

// ========================================
// GTK+ helper functions

// NOTE: parent can be NULL in all functions but it's best to set them

// simple Message Box, see above for the 'type' flags
// toolkit-independent, cast parent ot a GtkWidget*
typedef gint (WINAPI* PFN_QERAPP_MESSAGEBOX) (void *parent, const char* text,
                                              const char* caption, guint32 type, const char *URL);

// file and directory selection functions return NULL if the user hits cancel
// or a gchar* string that must be g_free'd by the user
// - 'title' is the dialog title (can be NULL)
// - 'path' is used to set the initial directory (can be NULL)
// - 'pattern': the first pattern is for the win32 mode, then comes the Gtk pattern list, see Radiant source for samples
// TTimo 04/01/2001 toolkit-independant, cast parent to a GtkWidget*
typedef const gchar* (* PFN_QERAPP_FILEDIALOG) (void *parent, gboolean open, const char* title,
                                                const char* path, const char* pattern);
typedef gchar* (WINAPI* PFN_QERAPP_DIRDIALOG) (void *parent, const char* title,
                                               const char* path);

// return true if the user closed the dialog with 'Ok'
// 'color' is used to set the initial value and store the selected value
typedef bool (WINAPI* PFN_QERAPP_COLORDIALOG) (void *parent, float *color,
                                               const char* title);

// load a .bmp file and store the results in 'gdkpixmap' and 'mask'
// returns TRUE on success but even if it fails, it creates an empty pixmap
// NOTE: 'filename' is relative to <radiant_path>/plugins/bitmaps/
// TTimo 04/01/2001 toolkit-independant, cast gkpixmap to GdkPixmap and mask to GdkBitmap
typedef bool (WINAPI* PFN_QERAPP_LOADBITMAP) (const char* filename, void **gdkpixmap, void **mask);

// ========================================
// read/write preferences file

// use this function to get the directory where the preferences file are stored
typedef const char* (WINAPI* PFN_QERAPP_PROFILE_GETDIR) ();

// 'filename' is the absolute path
typedef bool (WINAPI* PFN_QERAPP_PROFILE_SAVEINT) (const char *filename, const char *section,
                                                   const char *key, int value);
typedef bool (WINAPI* PFN_QERAPP_PROFILE_SAVESTR) (const char *filename, const char *section,
                                                   const char *key, const char *value);
typedef int (WINAPI* PFN_QERAPP_PROFILE_LOADINT) (const char *filename, const char *section,
                                                  const char *key, int default_value);
typedef char* (WINAPI* PFN_QERAPP_PROFILE_LOADSTR) (const char *filename, const char *section,
                                                    const char *key, const char *default_value);

//=========================================
// editor functions

// There are 3 potential brush handle lists
// 1. the list that contains brushes a plugin creates using CreateBrushHandle
// 2. the selected brush list (brushes the user has selected)
// 3. the active brush list (brushes in the map that are not selected)
// 
// In general, the same things can be done to brush handles (face manip, delete brushhandle, etc.. ) in each
// list. There are a few exceptions. 
// 1. You cannot commit a selected or active brush handle to the map. This is because it is already in the map. 
// 2. You cannot bind brush handles from the selected or active brush list to an entity. As of v1.0 of the plugins
// the only way for a plugin to create entities is to create a brush handles (or a list of handles) and then bind
// them to an entity. This will commit the brush(s) and/or the entities to the map as well.
// 
// To use the active or selected brush lists, you must first allocate them (which returns a count) and then
// release them when you are finish manipulating brushes in one of those lists. 

//++timo NOTE : the #defines here are never used, but can help finding where things are done in the editor
#if 0
// brush manipulation routines
#define QERAPP_CREATEBRUSH "QERApp_CreateBrush"
#define QERAPP_CREATEBRUSHHANDLE "QERApp_CreateBrushHandle"
#define QERAPP_DELETEBRUSHHANDLE "QERApp_DeleteBrushHandle"
#define QERAPP_COMMITBRUSHHANDLETOMAP "QERApp_CommitBrushHandleToMap"
//++timo not implemented .. remove
// #define QERAPP_BINDHANDLESTOENTITY "QERApp_BindHandlesToEntity"
#define QERAPP_ADDFACE "QERApp_AddFace"
#define QERAPP_ADDFACEDATA "QERApp_AddFaceData"
#define QERAPP_GETFACECOUNT "QERApp_GetFaceCount"
#define QERAPP_GETFACEDATA "QERApp_GetFaceData"
#define QERAPP_SETFACEDATA "QERApp_SetFaceData"
#define QERAPP_DELETEFACE "QERApp_DeleteFace"
#define QERAPP_TEXTUREBRUSH "QERApp_TextureBrush"
#define QERAPP_BUILDBRUSH "QERApp_BuildBrush"					// PGM
#define QERAPP_SELECTEDBRUSHCOUNT "QERApp_SelectedBrushCount"
#define QERAPP_ALLOCATESELECTEDBRUSHHANDLES "QERApp_AllocateSelectedBrushHandles"
#define QERAPP_RELEASESELECTEDBRUSHHANDLES "QERApp_ReleaseSelectedBrushHandles"
#define QERAPP_GETSELECTEDBRUSHHANDLE "QERApp_GetSelectedBrushHandle"
#define QERAPP_ACTIVEBRUSHCOUNT "QERApp_ActiveBrushCount"
#define QERAPP_ALLOCATEACTIVEBRUSHHANDLES "QERApp_AllocateActiveBrushHandles"
#define QERAPP_RELEASEACTIVEBRUSHHANDLES "QERApp_ReleaseActiveBrushHandles"
#define QERAPP_GETACTIVEBRUSHHANDLE "QERApp_GetActiveBrushHandle"

// texture stuff
#define QERAPP_TEXTURECOUNT "QERApp_TextureCount"
#define QERAPP_GETTEXTURE "QERApp_GetTexture"
#define QERAPP_GETCURRENTTEXTURE "QERApp_GetCurrentTexture"
#define QERAPP_SETCURRENTTEXTURE "QERApp_SetCurrentTexture"

// selection 
#define QERAPP_DELETESELECTION "QERApp_DeleteSelection"
#define QERAPP_SELECTBRUSH "QERApp_SelectBrush"					// PGM
#define QERAPP_DESELECTBRUSH "QERApp_DeselectBrush"				// PGM
#define QERAPP_DESELECTALLBRUSHES "QERApp_DeselectAllBrushes"	// PGM

// data gathering
#define QERAPP_GETPOINTS "QERApp_GetPoints"
#define QERAPP_SELECTBRUSHES "QERApp_GetBrushes"

// entity class stuff
// the entity handling is very basic for 1.0
#define QERAPP_GETECLASSCOUNT "QERApp_GetEClassCount"
#define QERAPP_GETECLASS "QERApp_GetEClass"

// misc
#define QERAPP_SYSMSG "QERApp_SysMsg"
#define QERAPP_INFOMSG "QERApp_InfoMsg"
#define QERAPP_HIDEINFOMSG "QERApp_HideInfoMsg"
#define QERAPP_RESET_PLUGINS "QERApp_ResetPlugins"

// texture loading
#define QERAPP_LOADTEXTURERGBA "QERApp_LoadTextureRGBA"

// FIXME: the following are not implemented yet
// hook registrations
#define QERAPP_REGISTER_MAPLOADFUNC "QERApp_Register_MapLoadFunc"
#define QERAPP_REGISTER_MAPSAVEFUNC "QERApp_Register_MapSaveFunc"

// FIXME: the following are not implemented yet
#define QERAPP_REGISTER_PROJECTLOADFUNC "QERApp_Register_ProjectLoadFunc"
#define QERAPP_REGISTER_MOUSEHANDLER "QERApp_Register_MouseHandler"
#define QERAPP_REGISTER_KEYHANDLER "QERApp_Register_KeyHandler"

// FIXME: new primtives do not work in v1.00
// primitives are new types of things in the map
// for instance, the Q3 curves could have been done as 
// primitives instead of being built in 
// it will be a plugins responsibility to hook the map load and save funcs to load
// and/or save any additional data (like new primitives of some type)
// the editor will call each registered renderer during the rendering process to repaint
// any primitives the plugin owns
// each primitive object has a temporary sibling brush that lives in the map
// FIXME: go backwards on this a bit.. orient it more towards the temp brush mode as it will be cleaner
// basically a plugin will hook the map load and save and will add the primitives to the map.. this will
// produce a temporary 'primitive' brush and the appropriate renderer will be called as well as the 
// edit handler (for edge drags, sizes, rotates, etc.. ) and the vertex maker will be called when vertex
// mode is attemped on the brush.. there will need to be a GetPrimitiveBounds callback in the edit handler
// so the brush can resize appropriately as needed.. this might be the plugins responsibility to set the 
// sibling brushes size.. it will then be the plugins responsibility to hook map save to save the primitives
// as the editor will discard any temp primitive brushes.. (there probably needs to be some kind of sanity check
// here as far as keeping the brushes and the plugin in sync.. i suppose the edit handler can deal with all of that
// crap but it looks like a nice place for a mess)
#define QERAPP_REGISTER_PRIMITIVE "QERApp_Register_Primitive"
#define QERAPP_REGISTER_RENDERER "QERApp_Register_Renderer"
#define QERAPP_REGISTER_EDITHANDLER "QERApp_Register_EditHandler"
#define QERAPP_REGISTER_VERTEXMAKER "QERApp_Register_VertexMaker"
#define QERAPP_ADDPRIMITIVE "QERApp_AddPrimitive"

// v1.70
#define QERAPP_GETENTITYCOUNT "QERApp_GetEntityCount"
#define QERAPP_GETENTITYHANDLE "QERApp_GetEntityHandle"
//++timo not implemented for the moment
// #define QERAPP_GETENTITYINFO "QERApp_GetEntityInfo"
//++timo does the keyval need some more funcs to add/remove ?
// get the pointer and do the changes yourself
#define QERAPP_ALLOCATEEPAIR "QERApp_AllocateEpair"
#define QERAPP_ALLOCATEENTITYBRUSHHANDLES "QERApp_AllocateEntityBrushHandles"
#define QERAPP_RELEASEENTITYBRUSHHANDLES "QERApp_ReleaseEntityBrushHandles"
#define QERAPP_GETENTITYBRUSHHANDLE "QERApp_GetEntityBrushHandle"
#define QERAPP_CREATEENTITYHANDLE "QERApp_CreateEntityHandle"
#define QERAPP_COMMITBRUSHHANDLETOENTITY "QERApp_CommitBrushHandleToEntity"
#define QERAPP_COMMITENTITYHANDLETOMAP "QERApp_CommitEntityHandleToMap"
#define QERAPP_SETSCREENUPDATE "QERApp_SetScreenUpdate"
#define QERAPP_BUILDBRUSH2 "QERApp_BuildBrush2"
#endif

// v1.80
#define QERAPP_GETDISPATCHPARAMS "QERApp_GetDispatchParams"

struct _QERPointData
{
  int     m_nCount;
  vec3_t *m_pVectors;
};

struct _QERFaceData
{
  char  m_TextureName[QER_MAX_NAMELEN];
  int   m_nContents;
  int   m_nFlags;
  int   m_nValue;
  float m_fShift[2];
  float m_fRotate;
  float m_fScale[2];
  vec3_t m_v1, m_v2, m_v3;
  // brush primitive additions
  qboolean m_bBPrimit;
  brushprimit_texdef_t brushprimit_texdef;
};

typedef void (WINAPI * PFN_QERAPP_CREATEBRUSH)(vec3_t vMin, vec3_t vMax);

typedef void* (WINAPI * PFN_QERAPP_CREATEBRUSHHANDLE)();
typedef void (WINAPI * PFN_QERAPP_DELETEBRUSHHANDLE)(void* pv);
typedef void (WINAPI * PFN_QERAPP_COMMITBRUSHHANDLETOMAP)(void* pv);
typedef void (WINAPI * PFN_QERAPP_ADDFACE)(void* pv, vec3_t v1, vec3_t v2, vec3_t v3);

typedef void (WINAPI * PFN_QERAPP_ADDFACEDATA)(void* pv, _QERFaceData *pData);
typedef int  (WINAPI * PFN_QERAPP_GETFACECOUNT)(void* pv);
typedef _QERFaceData* (WINAPI * PFN_QERAPP_GETFACEDATA)(void* pv, int nFaceIndex);
typedef void (WINAPI * PFN_QERAPP_SETFACEDATA)(void* pv, int nFaceIndex, _QERFaceData *pData);
typedef void (WINAPI * PFN_QERAPP_DELETEFACE)(void* pv, int nFaceIndex);
typedef void (WINAPI * PFN_QERAPP_TEXTUREBRUSH)(void* pv, char* pName);
typedef void (WINAPI * PFN_QERAPP_BUILDBRUSH)(void* pv);		// PGM
typedef void (WINAPI * PFN_QERAPP_SELECTBRUSH)(void* pv);		// PGM
typedef void (WINAPI * PFN_QERAPP_DESELECTBRUSH)(void* pv);		// PGM
typedef void (WINAPI * PFN_QERAPP_DESELECTALLBRUSHES)();			// PGM

typedef void (WINAPI * PFN_QERAPP_DELETESELECTION)();
typedef void (WINAPI * PFN_QERAPP_GETPOINTS)(int nMax, _QERPointData *pData, char* pMsg);

typedef int  (WINAPI * PFN_QERAPP_SELECTEDBRUSHCOUNT)();
typedef int (WINAPI * PFN_QERAPP_ALLOCATESELECTEDBRUSHHANDLES)();
typedef void (WINAPI * PFN_QERAPP_RELEASESELECTEDBRUSHHANDLES)();
typedef void* (WINAPI * PFN_QERAPP_GETSELECTEDBRUSHHANDLE)(int nIndex);

typedef int  (WINAPI * PFN_QERAPP_ACTIVEBRUSHCOUNT)();
typedef int (WINAPI * PFN_QERAPP_ALLOCATEACTIVEBRUSHHANDLES)();
typedef void (WINAPI * PFN_QERAPP_RELEASEACTIVEBRUSHHANDLES)();
typedef void* (WINAPI * PFN_QERAPP_GETACTIVEBRUSHHANDLE)(int nIndex);

typedef int  (WINAPI * PFN_QERAPP_TEXTURECOUNT)();
typedef char* (WINAPI * PFN_QERAPP_GETTEXTURE)(int nIndex);
typedef char* (WINAPI * PFN_QERAPP_GETCURRENTTEXTURE)();
typedef void (WINAPI * PFN_QERAPP_SETCURRENTTEXTURE)(char* pName);

typedef void (WINAPI * PFN_QERAPP_REGISTERMAPLOAD)(void* vp);
typedef void (WINAPI * PFN_QERAPP_REGISTERMAPSAVE)(void* vp);

typedef int (WINAPI * PFN_QERAPP_GETECLASSCOUNT)();
typedef char* (WINAPI * PFN_QERAPP_GETECLASS)(int nIndex);

typedef void (WINAPI * PFN_QERAPP_RESETPLUGINS)();
//--typedef int (WINAPI* PFN_QERAPP_GETENTITYCOUNT)();

/*!
\fn LoadTextureRGBA
\param pPixels is the raw RGBA pixel data (24bits, 8 bit depth)
\param nWidth image width
\param nHeight image height
this will work from the RGBA data and create a GL texture (accessed through a GL bind number)
it takes care of creating the mipmapping levels too
see http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=575 for some related issues
*/
typedef qtexture_t* (* PFN_QERAPP_LOADTEXTURERGBA)(unsigned char* pPixels, int nWidth, int nHeight);

//--typedef LPCSTR (WINAPI* PFN_QERAPP_GETENTITY)(int nIndex);

// v1.70
typedef int (WINAPI * PFN_QERAPP_GETENTITYCOUNT)();
typedef void* (WINAPI * PFN_QERAPP_GETENTITYHANDLE)(int nIndex);
// FIXME: those two are fairly outdated, you get the epairs
//   but you don't have a clean epair read/write query
//   and you rely on the C structs directly, which might go away soon
//   ok now, stop using, it's bad for your karma (see iepairs.h instead)
typedef epair_t* (WINAPI * PFN_QERAPP_ALLOCATEEPAIR)( char*, char* );
typedef int (WINAPI * PFN_QERAPP_ALLOCATEENTITYBRUSHHANDLES)(void* vp);
typedef void (WINAPI * PFN_QERAPP_RELEASEENTITYBRUSHHANDLES)();
typedef void* (WINAPI * PFN_QERAPP_GETENTITYBRUSHHANDLE)(int nIndex);
typedef void* (WINAPI * PFN_QERAPP_CREATEENTITYHANDLE)();
typedef void (WINAPI * PFN_QERAPP_COMMITBRUSHHANDLETOENTITY)( void* vpBrush, void* vpEntity);
typedef void (WINAPI * PFN_QERAPP_COMMITENTITYHANDLETOMAP)(void* vp);
typedef void (WINAPI * PFN_QERAPP_SETSCREENUPDATE)(int bScreenUpdate);
// this one uses window flags defined in qertypes.h
typedef void (WINAPI * PFN_QERAPP_SYSUPDATEWINDOWS)(int bits);
//++timo remove this one
typedef void (WINAPI * PFN_QERAPP_BUILDBRUSH2)(void* vp, int bConvert);

// v1.80
typedef void (WINAPI * PFN_QERAPP_GETDISPATCHPARAMS)(vec3_t vMin, vec3_t vMax, bool *bSingleBrush);

typedef int (WINAPI * PFN_QERAPP_REQUESTINTERFACE)( REFGUID, void* );
// use this one for errors, Radiant will stop after the "edit preferences" dialog
typedef void (WINAPI * PFN_QERAPP_ERROR)(char* pMsg, ...);
// use to gain read access to the project epairs
// FIXME: removed, accessed through QERPlug_RegisterPluginEntities with the IEpair interface
// typedef void (WINAPI* PFN_QERAPP_GETPROJECTEPAIR)(epair_t **);
// used to allocate and read a buffer
//++timo NOTE: perhaps this would need moving to some kind of dedicated interface
typedef int (WINAPI * PFN_QERAPP_LOADFILE)(const char *pLocation, void ** buffer);
typedef char* (WINAPI * PFN_QERAPP_EXPANDRELETIVEPATH)(char *);
typedef void (WINAPI * PFN_QERAPP_QECONVERTDOSTOUNIXNAME)( char *dst, const char *src );
typedef int (WINAPI * PFN_QERAPP_HASSHADER)(const char *);
typedef int (WINAPI * PFN_QERAPP_TEXTURELOADSKIN)(char *pName, int *pnWidth, int *pnHeight);
// retrieves the path to the engine from the preferences dialog box
typedef const char* (WINAPI * PFN_QERAPP_GETGAMEPATH)();
// retrieves full Radiant path
typedef const char* (WINAPI * PFN_QERAPP_GETQERPATH)();
// retieves .game name of current active game
typedef const char* (WINAPI * PFN_QERAPP_GETGAMEFILE)();

// patches in/out
// NOTE: this is a bit different from the brushes in/out, no LPVOID handles this time
// use int indexes instead
// if you call AllocateActivePatchHandles, you'll be playing with active patches
// AllocateSelectedPatcheHandles for selected stuff
// a call to CreatePatchHandle will move you to a seperate index table
typedef int				(WINAPI * PFN_QERAPP_ALLOCATEACTIVEPATCHHANDLES)		();
typedef int				(WINAPI * PFN_QERAPP_ALLOCATESELECTEDPATCHHANDLES)	();
typedef void			(WINAPI * PFN_QERAPP_RELEASEPATCHHANDLES)			();
typedef patchMesh_t*	(WINAPI * PFN_QERAPP_GETPATCHDATA)					(int);
typedef patchMesh_t*	(WINAPI * PFN_QERAPP_GETPATCHHANDLE)				(int);
typedef void			(WINAPI * PFN_QERAPP_DELETEPATCH)				(int);
typedef int				(WINAPI * PFN_QERAPP_CREATEPATCHHANDLE)				();
// when commiting, only a few patchMesh_t members are relevant:
//  int	width, height;		// in control points, not patches
//  int   contents, flags, value, type;
//  drawVert_t ctrl[MAX_PATCH_WIDTH][MAX_PATCH_HEIGHT];
// once you have commited the index is still available, if the patch handle was allocated by you
//   then you can re-use the index to commit other patches .. otherwise you can change existing patches
// NOTE: the handle thing for plugin-allocated patches is a bit silly (nobody's perfect)
// TODO: change current behaviour to an index = 0 to tell Radiant to allocate, other indexes to existing patches
// patch is selected after a commit
// you can add an optional texture / shader name .. if NULL will use the current texture
typedef void			(WINAPI * PFN_QERAPP_COMMITPATCHHANDLETOMAP)			(int, patchMesh_t* pMesh, char *texName);
typedef void			(WINAPI * PFN_QERAPP_COMMITPATCHHANDLETOENTITY)			(int, patchMesh_t* pMesh, char *texName, void* vpEntity);

// console output
#define SYS_VRB 0 ///< verbose support (on/off)
#define SYS_STD 1 ///< standard print level - this is the default
#define SYS_WRN 2 ///< warnings
#define SYS_ERR 3 ///< error
#define SYS_NOCON 4 ///< no console, only print to the file (useful whenever Sys_Printf and output IS the problem)
typedef void (WINAPI* PFN_QERAPP_SYSPRINTF) (const char *text, ...);
typedef void (WINAPI* PFN_QERAPP_SYSFPRINTF) (int flag, const char *text, ...);

typedef void (WINAPI* PFN_QERAPP_SYSBEGINWAIT) ();
typedef void (WINAPI* PFN_QERAPP_SYSENDWAIT) ();

typedef void (* PFN_QERAPP_SYSBEEP) ();

typedef void (* PFN_QERAPP_SYSSTATUS) (const char *psz, int part );

// core map functionality
typedef void      (* PFN_QERAPP_MAPNEW)                     ();
typedef void      (* PFN_QERAPP_MAPFREE)                    ();
typedef void      (* PFN_QERAPP_MAPBUILDBRUSHDATA)          ();
typedef qboolean  (* PFN_QERAPP_MAPISBRUSHFILTERED)         (brush_t *);
typedef void      (* PFN_QERAPP_MAPSTARTPOSITION)           ();
typedef void      (* PFN_QERAPP_MAPREGIONOFF)               ();
//typedef void      (* PFN_QERAPP_SAVEASDIALOG)               (bool bRegion);
typedef void      (* PFN_QERAPP_SETBUILDWINDINGSNOTEXBUILD) (bool);
typedef void      (* PFN_QERAPP_POINTFILECLEAR)             ();

typedef void (* PFN_QERAPP_SYSSETTITLE) (const char *text);

typedef void (* PFN_QERAPP_CSGMAKEHOLLOW) ();

typedef void (* PFN_QERAPP_REGIONSPAWNPOINT) (FILE *f);

/*!
access to a portable GetTickCount
*/
typedef unsigned long (* PFN_QERAPP_GETTICKCOUNT) ();

class IModelCache
{
public:
	virtual ~IModelCache() { }
  virtual entity_interfaces_t *GetByID(const char *id, const char* version) = 0;
  virtual void DeleteByID(const char *id, const char* version) = 0;
  virtual void RefreshAll() = 0;
};

typedef IModelCache* (* PFN_GETMODELCACHE)();

class IFileTypeList
{
public:
	virtual ~IFileTypeList() { }
  virtual void addType(filetype_t type) = 0;
};

class IFileTypeRegistry
{
public:
	virtual ~IFileTypeRegistry() { }
  virtual void addType(const char* key, filetype_t type) = 0;
  virtual void getTypeList(const char* key, IFileTypeList* typelist) = 0;
private:
};

typedef IFileTypeRegistry* (* PFN_GETFILETYPEREGISTRY)();

typedef const char* (* PFN_QERAPP_READPROJECTKEY)(const char* key);

typedef char* (* PFN_GETMAPFILENAME)();

typedef bfilter_t* (* PFN_QERPLUG_FILTERADD)(int type, int bmask, char *str, int exclude);

typedef void (* PFN_QERPLUG_FILTERACTIVATE) (void);

  // FIXME:
// add map format extensions
// add texture format handlers
// add surface dialog handler
// add model handler/displayer

// v1 func table
// Plugins need to declare one of these and implement the getfunctable as described above
struct _QERFuncTable_1
{
  int   m_nSize;
  PFN_QERAPP_CREATEBRUSH            m_pfnCreateBrush;
  PFN_QERAPP_CREATEBRUSHHANDLE      m_pfnCreateBrushHandle;
  PFN_QERAPP_DELETEBRUSHHANDLE      m_pfnDeleteBrushHandle;
  PFN_QERAPP_COMMITBRUSHHANDLETOMAP m_pfnCommitBrushHandle;
  PFN_QERAPP_ADDFACE                m_pfnAddFace;
  PFN_QERAPP_ADDFACEDATA            m_pfnAddFaceData;
  PFN_QERAPP_GETFACEDATA            m_pfnGetFaceData;
  PFN_QERAPP_GETFACECOUNT           m_pfnGetFaceCount;
  PFN_QERAPP_SETFACEDATA            m_pfnSetFaceData;
  PFN_QERAPP_DELETEFACE             m_pfnDeleteFace;
  PFN_QERAPP_TEXTUREBRUSH           m_pfnTextureBrush;
  PFN_QERAPP_BUILDBRUSH				m_pfnBuildBrush;				// PGM
  PFN_QERAPP_SELECTBRUSH			m_pfnSelectBrush;				// PGM
  PFN_QERAPP_DESELECTBRUSH			m_pfnDeselectBrush;				// PGM
  PFN_QERAPP_DESELECTALLBRUSHES		m_pfnDeselectAllBrushes;		// PGM

  PFN_QERAPP_DELETESELECTION        m_pfnDeleteSelection;
  PFN_QERAPP_GETPOINTS              m_pfnGetPoints;

  PFN_QERAPP_SELECTEDBRUSHCOUNT           m_pfnSelectedBrushCount;
  PFN_QERAPP_ALLOCATESELECTEDBRUSHHANDLES m_pfnAllocateSelectedBrushHandles;
  PFN_QERAPP_RELEASESELECTEDBRUSHHANDLES  m_pfnReleaseSelectedBrushHandles;
  PFN_QERAPP_GETSELECTEDBRUSHHANDLE       m_pfnGetSelectedBrushHandle;

  PFN_QERAPP_ACTIVEBRUSHCOUNT             m_pfnActiveBrushCount;
  PFN_QERAPP_ALLOCATEACTIVEBRUSHHANDLES   m_pfnAllocateActiveBrushHandles;
  PFN_QERAPP_RELEASEACTIVEBRUSHHANDLES    m_pfnReleaseActiveBrushHandles;
  PFN_QERAPP_GETACTIVEBRUSHHANDLE         m_pfnGetActiveBrushHandle;

  //++timo this would need to be removed and replaced by the IShaders interface
  PFN_QERAPP_TEXTURECOUNT                 m_pfnTextureCount;
  PFN_QERAPP_GETTEXTURE                   m_pfnGetTexture;
  PFN_QERAPP_GETCURRENTTEXTURE            m_pfnGetCurrentTexture;
  PFN_QERAPP_SETCURRENTTEXTURE            m_pfnSetCurrentTexture;

  PFN_QERAPP_GETECLASSCOUNT         m_pfnGetEClassCount;
  PFN_QERAPP_GETECLASS              m_pfnGetEClass;
  PFN_QERAPP_RESETPLUGINS           m_pfnResetPlugins;
  // v1.00 ends here
  // v1.50 starts here
  PFN_QERAPP_LOADTEXTURERGBA        m_pfnLoadTextureRGBA;
  // v1.50 ends here
  // v1.70 starts here
  PFN_QERAPP_GETENTITYCOUNT			m_pfnGetEntityCount;
  PFN_QERAPP_GETENTITYHANDLE		m_pfnGetEntityHandle;
  PFN_QERAPP_ALLOCATEENTITYBRUSHHANDLES	m_pfnAllocateEntityBrushHandles;
  PFN_QERAPP_RELEASEENTITYBRUSHHANDLES	m_pfnReleaseEntityBrushHandles;
  PFN_QERAPP_GETENTITYBRUSHHANDLE	m_pfnGetEntityBrushHandle;
  PFN_QERAPP_CREATEENTITYHANDLE		m_pfnCreateEntityHandle;
  PFN_QERAPP_COMMITBRUSHHANDLETOENTITY	m_pfnCommitBrushHandleToEntity;
  PFN_QERAPP_COMMITENTITYHANDLETOMAP	m_pfnCommitEntityHandleToMap;
  PFN_QERAPP_ALLOCATEEPAIR			m_pfnAllocateEpair;
  PFN_QERAPP_SETSCREENUPDATE		m_pfnSetScreenUpdate;
  PFN_QERAPP_BUILDBRUSH2			m_pfnBuildBrush2;
  // v1.70 ends here
  // v1.80 starts here
  PFN_QERAPP_GETDISPATCHPARAMS     m_pfnGetDispatchParams;

  // plugins can request additional interfaces
  PFN_QERAPP_REQUESTINTERFACE		m_pfnRequestInterface;
  PFN_QERAPP_ERROR					m_pfnError;
  // loading a file into a buffer
  PFN_QERAPP_LOADFILE				m_pfnLoadFile;
  PFN_QERAPP_EXPANDRELETIVEPATH		m_pfnExpandReletivePath;
  PFN_QERAPP_QECONVERTDOSTOUNIXNAME	m_pfnQE_ConvertDOSToUnixName;
  PFN_QERAPP_HASSHADER				m_pfnHasShader;
  PFN_QERAPP_TEXTURELOADSKIN		m_pfnTexture_LoadSkin;
  PFN_QERAPP_GETGAMEPATH			m_pfnGetGamePath;
  PFN_QERAPP_GETQERPATH				m_pfnGetQERPath;
  PFN_QERAPP_GETGAMEFILE			m_pfnGetGameFile;
  // patches in / out
  PFN_QERAPP_ALLOCATEACTIVEPATCHHANDLES		m_pfnAllocateActivePatchHandles;
  PFN_QERAPP_ALLOCATESELECTEDPATCHHANDLES	m_pfnAllocateSelectedPatchHandles;
  PFN_QERAPP_RELEASEPATCHHANDLES			m_pfnReleasePatchHandles;
  PFN_QERAPP_GETPATCHDATA					m_pfnGetPatchData;
  PFN_QERAPP_GETPATCHHANDLE				m_pfnGetPatchHandle;
  PFN_QERAPP_DELETEPATCH					m_pfnDeletePatch;
  PFN_QERAPP_CREATEPATCHHANDLE				m_pfnCreatePatchHandle;
  PFN_QERAPP_COMMITPATCHHANDLETOMAP			m_pfnCommitPatchHandleToMap;
  PFN_QERAPP_COMMITPATCHHANDLETOENTITY	m_pfnCommitPatchHandleToEntity;

  PFN_QERAPP_LOADIMAGE  m_pfnLoadImage;

  // GTK+ functions
  PFN_QERAPP_MESSAGEBOX  m_pfnMessageBox;
  PFN_QERAPP_FILEDIALOG  m_pfnFileDialog;
  PFN_QERAPP_DIRDIALOG   m_pfnDirDialog;
  PFN_QERAPP_COLORDIALOG m_pfnColorDialog;
  PFN_QERAPP_LOADBITMAP  m_pfnLoadBitmap;

  // Profile functions
  PFN_QERAPP_PROFILE_GETDIR  m_pfnProfileGetDirectory;
  PFN_QERAPP_PROFILE_SAVEINT m_pfnProfileSaveInt;
  PFN_QERAPP_PROFILE_SAVESTR m_pfnProfileSaveString;
  PFN_QERAPP_PROFILE_LOADINT m_pfnProfileLoadInt;
  PFN_QERAPP_PROFILE_LOADSTR m_pfnProfileLoadString;

  // Sys_ functions
  PFN_QERAPP_SYSUPDATEWINDOWS		m_pfnSysUpdateWindows;
  PFN_QERAPP_SYSBEEP m_pfnSysBeep;
  PFN_QERAPP_SYSPRINTF  m_pfnSysPrintf;
  PFN_QERAPP_SYSFPRINTF m_pfnSysFPrintf;
  PFN_QERAPP_SYSBEGINWAIT m_pfnSysBeginWait;
  PFN_QERAPP_SYSENDWAIT m_pfnSysEndWait;
  PFN_QERAPP_SYSSETTITLE m_pfnSys_SetTitle;
  PFN_QERAPP_SYSSTATUS m_pfnSys_Status;

  // some core functionality on the map
  PFN_QERAPP_MAPNEW m_pfnMapNew;
  PFN_QERAPP_MAPFREE m_pfnMapFree;
  PFN_QERAPP_MAPBUILDBRUSHDATA m_pfnMapBuildBrushData;
  PFN_QERAPP_MAPISBRUSHFILTERED m_pfnMap_IsBrushFiltered;
  PFN_QERAPP_MAPSTARTPOSITION m_pfnMapStartPosition;
  PFN_QERAPP_MAPREGIONOFF m_pfnMapRegionOff;
  PFN_QERAPP_SETBUILDWINDINGSNOTEXBUILD m_pfnSetBuildWindingsNoTexBuild;
//  PFN_QERAPP_SAVEASDIALOG m_pfnSaveAsDialog;
  PFN_QERAPP_POINTFILECLEAR m_pfnPointFileClear;

  // FIXME TTimo prolly want to move that somewhere else
  PFN_QERAPP_CSGMAKEHOLLOW m_pfnCSG_MakeHollow;

  PFN_QERAPP_REGIONSPAWNPOINT m_pfnRegionSpawnPoint;
  PFN_QERAPP_GETTICKCOUNT m_pfnQGetTickCount;
  PFN_GETMODELCACHE m_pfnGetModelCache;
  PFN_GETFILETYPEREGISTRY m_pfnGetFileTypeRegistry;

  PFN_QERAPP_READPROJECTKEY m_pfnReadProjectKey;

  PFN_QERPLUG_FILTERACTIVATE m_pfnFiltersActivate;
  PFN_QERPLUG_FILTERADD m_pfnFilterAdd;

  // digibob from the old _QERAppBSPFrontendTable table
  PFN_GETMAPFILENAME  m_pfnGetMapName;
};

// macros to access those faster in plugins
#ifdef USE_QERTABLE_DEFINE
#ifndef __QERTABLENAME
#define __QERTABLENAME g_FuncTable
#endif
#define CSG_MakeHollow __QERTABLENAME.m_pfnCSG_MakeHollow
#define Sys_Beep __QERTABLENAME.m_pfnSysBeep
#define Sys_Printf __QERTABLENAME.m_pfnSysPrintf
#define Sys_FPrintf __QERTABLENAME.m_pfnSysFPrintf
#define Sys_BeginWait __QERTABLENAME.m_pfnSysBeginWait
#define Sys_EndWait __QERTABLENAME.m_pfnSysEndWait
#define Sys_UpdateWindows __QERTABLENAME.m_pfnSysUpdateWindows
#define Sys_SetTitle __QERTABLENAME.m_pfnSys_SetTitle
#define Sys_Status __QERTABLENAME.m_pfnSys_Status
#define Select_Deselect __QERTABLENAME.m_pfnDeselectAllBrushes
#define Map_New __QERTABLENAME.m_pfnMapNew
#define Map_Free __QERTABLENAME.m_pfnMapFree
#define Map_IsBrushFiltered __QERTABLENAME.m_pfnMap_IsBrushFiltered
#define Map_BuildBrushData __QERTABLENAME.m_pfnMapBuildBrushData
#define Map_StartPosition __QERTABLENAME.m_pfnMapStartPosition
#define Map_RegionOff __QERTABLENAME.m_pfnMapRegionOff
#define QE_ConvertDOSToUnixName __QERTABLENAME.m_pfnQE_ConvertDOSToUnixName
#define SetBuildWindingsNoTexBuild __QERTABLENAME.m_pfnSetBuildWindingsNoTexBuild
//#define SaveAsDialog __QERTABLENAME.m_pfnSaveAsDialog
#define Pointfile_Clear __QERTABLENAME.m_pfnPointFileClear
#define SetScreenUpdate __QERTABLENAME.m_pfnSetScreenUpdate
#define Region_SpawnPoint __QERTABLENAME.m_pfnRegionSpawnPoint
#define QGetTickCount __QERTABLENAME.m_pfnGetTickCount
#define GetModelCache __QERTABLENAME.m_pfnGetModelCache
#define GetFileTypeRegistry __QERTABLENAME.m_pfnGetFileTypeRegistry
#else
IFileTypeRegistry* GetFileTypeRegistry();
#endif

#endif