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+/** 
+ * @file viewer.h
+ * @brief Main file for viewer.
+ *
+ * Copyright (c) 2000-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#ifndef LL_VIEWER_H
+#define LL_VIEWER_H
+
+#include "stdtypes.h"
+#include "v3math.h"
+#include "llcoord.h"
+
+#include "lltimer.h"
+#include "llframetimer.h"
+#include "lluuid.h"
+#include "llsys.h"
+#include "lltransactiontypes.h"
+#include "llviewercontrol.h"
+
+// ************************************************************
+// Enabled this definition to compile a 'hacked' viewer that
+// allows a hacked godmode to be toggled on and off.
+#define TOGGLE_HACKED_GODLIKE_VIEWER 
+
+#ifdef TOGGLE_HACKED_GODLIKE_VIEWER
+extern BOOL gHackGodmode;
+#endif
+// ************************************************************
+
+//
+// Forward Declarations
+//
+class LLVector3d;
+class LLViewerObject;
+class LLMessageSystem;
+class LLHost;
+class LLAudioEngine;
+class LLViewerRegion;
+class LLVFS;
+class LLGlobalEconomy;
+class LLPieMenu;
+
+//
+// Global Variables
+//
+
+extern LLString gSecondLife;
+
+extern S32 gNumSessions;
+extern BOOL gNoRender;
+extern LLMemoryInfo gSysMemory;
+extern BOOL gLogMessages;
+extern BOOL gLogUTC;
+extern BOOL gUseAudio;
+extern BOOL gConnectToSomething;
+extern BOOL gGodConnect;
+extern BOOL gRunLocal;
+extern LLString gCmdLineFirstName;
+extern LLString gCmdLineLastName;
+extern LLString gCmdLinePassword;
+extern BOOL gAutoLogin;
+extern LLUUID gTemplateToken;
+extern U32 gFrameCount;
+extern BOOL gRequestInventoryLibrary;
+extern BOOL gAcceptTOS;
+extern BOOL gAcceptCriticalMessage;
+extern LLUUID gInventoryLibraryOwner;
+extern LLUUID gInventoryLibraryRoot;
+extern BOOL gLastExecFroze;
+extern F32 gLogoutMaxTime;
+extern LLTimer gRenderStartTime;
+extern LLTimer gLogoutTimer;
+extern BOOL gInProductionGrid;
+extern S32 gCrashBehavior;
+extern bool gVerifySSLCert;
+
+
+// TODO: Eliminate most of these, move into a globals structure.
+extern const U32 PATCH_SIZE;
+extern const LLVector3 DEFAULT_OBJECT_SCALE;
+extern BOOL             gDisconnected;
+extern BOOL             gQuit;                                          // We're done, quit after processing this message.
+extern BOOL             gQuitRequested;                         // User wants to quit, may have modified documents open.
+extern BOOL             gLogoutRequestSent;                     // Disconnect message sent to simulator, no longer safe to send messages to the sim.
+extern BOOL             gInitializationComplete;        // OK to call display() and idle()
+extern BOOL             gUseWireframe;
+extern U32              gSecondsPerDay;
+extern U32              gSecondsPerYear;
+// Is the Pacific time zone (aka server time zone)
+// currently in daylight savings time?
+extern BOOL gPacificDaylightTime;
+
+extern U64      gFrameTime;                                     // The timestamp of the most-recently-processed frame
+extern F32              gFrameTimeSeconds;                      // Loses msec precision after ~4.5 hours...
+extern F32              gFrameIntervalSeconds;          // Elapsed time between current and previous gFrameTimeSeconds
+extern F32              gFPSClamped;                                            // Frames per second, smoothed, weighted toward last frame
+extern F32              gFrameDTClamped;
+extern U64              gStartTime;
+
+extern LLFrameTimer     gRestoreGLTimer;
+extern BOOL                     gRestoreGL;
+
+extern BOOL                     gDisplayCameraPos;
+extern BOOL                     gDisplayWindInfo;
+extern BOOL                     gDisplayNearestWater;
+extern BOOL                     gDisplayFOV;
+extern BOOL                     gForceRenderLandFence;
+
+extern BOOL                     gAllowAFK;
+extern BOOL                     gShowObjectUpdates;
+
+extern BOOL                     gTeleportDisplay;
+extern LLFrameTimer     gTeleportDisplayTimer;
+
+extern LLGlobalEconomy *gGlobalEconomy;
+
+// VFS globals - gVFS is for general use
+// gStaticVFS is read-only and is shipped w/ the viewer
+// it has pre-cache data like the UI .TGAs
+extern LLVFS    *gStaticVFS;
+
+extern LLUUID   gViewerDigest;  // MD5 digest of the viewer's executable file.
+
+class LLURLSimString
+{
+public:
+        enum { NOT_SET=0, NOT_PARSED=1, PARSE_OK=2, PARSE_FAIL=-1 };
+        static void setString(const LLString& url);
+        static bool parse();
+        static bool unpack_data(void* data);
+        static bool send_to_other_instance();
+        
+        LLURLSimString() : mX(128), mY(128), mZ(0), mParseState(NOT_PARSED) {}
+
+private:
+        static S32 parseGridIdx(const LLString& in_string, S32 idx0, S32* res, S32 max);
+        struct llurl_data
+        {
+                char    mSimName[DB_SIM_NAME_BUF_SIZE];
+                S32             mSimX;
+                S32             mSimY;
+                S32             mSimZ;
+        };
+
+        
+public:
+        static LLURLSimString sInstance;
+        static LLString sLocationStringHome;
+        static LLString sLocationStringLast;
+
+public:
+        LLString mSimString; // "name/x/y/z"
+        LLString mSimName;
+        S32 mX,mY,mZ;
+        S32 mParseState;
+};
+
+extern LLUUID gSunTextureID;
+extern LLUUID gMoonTextureID;
+
+extern BOOL gHandleKeysAsync;
+
+// Map scale in pixels per region
+extern F32 gMapScale;
+extern F32 gMiniMapScale;
+
+extern F32 gMouseSensitivity;
+extern BOOL gInvertMouse;
+
+//
+// Defines and constants
+//
+
+const S32 AGENT_UPDATES_PER_SECOND  = 10;
+
+// Global because multiple functions need to identify the window
+// by its name.
+extern LLString gWindowTitle;
+extern LLString gWindowName;
+extern LLString gDisabledMessage;
+extern BOOL gHideLinks;
+
+#define REGIONS_PER_LANDSCAPE_EDGE  3 
+#define NUMBER_OF_REGIONS       (REGIONS_PER_LANDSCAPE_EDGE             \
+                                                        * REGIONS_PER_LANDSCAPE_EDGE)
+#define CENTER_REGION           ((REGIONS_PER_LANDSCAPE_EDGE / 2)       \
+                                                        * REGIONS_PER_LANDSCAPE_EDGE            \
+                                                        + REGIONS_PER_LANDSCAPE_EDGE / 2)
+
+
+// translates constant EAST, NORTH, WEST, etc. to x,y offsets
+// eg, EAST = +1, 0
+// eg, SOUTHWEST = -1, -1
+const S32 MAP_REGION_TO_X[NUMBER_OF_REGIONS - 1] =
+{
+        1,      // east
+        0,      // north
+        -1,     // west
+        0,      // south
+        1,      // northeast
+        -1,     // northwest
+        -1,     // southwest
+        1       // southeast
+};
+const S32 MAP_REGION_TO_Y[NUMBER_OF_REGIONS - 1] =
+{
+        0,      // east
+        1,      // north
+        0,      // west
+        -1,     // south
+        1,      // northeast
+        1,      // northwest
+        -1,     // southwest
+        -1      // southeast
+};
+
+const BOOL FOR_SELECTION = TRUE;
+const BOOL NOT_FOR_SELECTION = FALSE;
+
+const U8 YES_PHYSICS = 1;
+const U8 NO_PHYSICS = 0;
+
+//
+// Prototypes
+//
+void display(BOOL rebuild = TRUE, F32 zoom_factor = 1.f, int subfield = 0);
+void draw_axes();
+
+void fire_shot(const U8 shot_type, const U8 use_physics );
+void add_object(LLPCode pcode, 
+                                U8 use_physics, 
+                                const LLVector3d &object_pos_global, 
+                                const LLQuaternion &rotation, 
+                                const LLVector3 &scale, 
+                                const LLVector3 &velocity,
+                                const LLVector3 &angular_velocity);
+
+BOOL add_object(LLPCode pcode, S32 screen_x, S32 screen_y, U8 use_physics);
+
+void idle();
+void idle_network();
+void init_audio();
+void init_textures();
+void init_landscape();
+void keyboard(char key);
+void keyboard_windows(char key);
+void kill_all_trees();
+void move_sun();
+BOOL raycast_for_new_obj_pos( S32 x, S32 y, LLViewerObject** hit_obj, S32* hit_face, BOOL* b_hit_land, LLVector3* ray_start_region, LLVector3* ray_end_region, LLViewerRegion** region );
+
+// Saves the final snapshot, but only once.
+void save_final_snapshot(void*);
+
+// Call when user is requesting application to quit.
+void app_request_quit();
+
+// Call when user aborts the quit, for example, canceling a required save of 
+// dirty document.
+void app_abort_quit();
+
+// Call if you need to quit immediately.  You can optionally
+// spawn a web page or open another application.
+void app_force_quit(const char* launch_file_on_quit = NULL);
+
+// Display an error dialog and forcibly quit.
+void app_early_exit(const LLString& message);
+
+// exit() immediately (after some cleanup)
+void app_force_exit(S32 arg);
+
+void do_disconnect(const LLString& message);
+void send_logout_request();
+void save_avatar(void*);
+
+void set_view(S32 which);
+
+void user_logout();
+
+F32 mouse_x_from_center(S32 x);
+F32 mouse_y_from_center(S32 x);
+
+void print_agent_nvpairs(void*);
+void reload_viewer(void);
+void reset_statistics();
+void output_statistics(void*);
+void write_debug(const char *str);
+void write_debug(const std::string& str);
+void login_alert_done(S32 option, void* user_data);
+void callback_cache_name(const LLUUID& id, const char* firstname, const char* lastname, BOOL is_group, void* data);
+void load_name_cache();
+void remove_marker_file();
+
+// Avoid including llagent.h everywhere.  This returns gAgent.getID().
+const LLUUID& agent_get_id();
+const LLUUID& agent_get_session_id();
+void agent_send_reliable_message();
+
+// Helpers for URIs
+const std::string& getLoginURI();
+const std::string& getHelperURI();
+
+#endif