#region ================== Copyright (c) 2007 Pascal vd Heiden

/*
 * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
 * This program is released under GNU General Public License
 * 
 * This program 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.
 * 
 */

#endregion

#region ================== Namespaces

using System;
using System.Collections;
using System.Collections.Generic;
using CodeImp.DoomBuilder.IO;
using System.IO;
using System.Windows.Forms;
using CodeImp.DoomBuilder.Map;
using System.Reflection;
using CodeImp.DoomBuilder.Plugins;
using CodeImp.DoomBuilder.Rendering;

#endregion

namespace CodeImp.DoomBuilder.Config
{
	public class ProgramConfiguration
	{
		#region ================== Constants

		#endregion

		#region ================== Variables

		// Original configuration
		private Configuration cfg;
		
		// Cached variables
		private bool blackbrowsers;
		private bool capitalizetexturenames; //mxd
		private int visualfov;
		private float visualmousesensx;
		private float visualmousesensy;
		private int imagebrightness;
		private float doublesidedalpha;
		private byte doublesidedalphabyte;
		private float backgroundalpha;
		private bool qualitydisplay;
		private bool squarethings;
		private bool testmonsters;
		private int defaultviewmode;
		private bool classicbilinear;
		private bool visualbilinear;
		private int mousespeed;
		private int movespeed;
		private float viewdistance;
		private bool invertyaxis;
		private string scriptfontname;
		private int scriptfontsize;
		private bool scriptfontbold;
		private bool scriptontop;
		private bool scriptautoindent;
		private bool snippetsallmanstyle; //mxd
		private string screenshotspath; //mxd
		private int scripttabwidth;
		private int previewimagesize;
		private int autoscrollspeed;
		private int zoomfactor;
		private bool showerrorswindow;
		private bool animatevisualselection;
		private int previousversion;
		private PasteOptions pasteoptions;
		private int dockersposition;
		private bool collapsedockers;
		private int dockerswidth;
		private bool toolbarscript;
		private bool toolbarundo;
		private bool toolbarcopy;
		private bool toolbarprefabs;
		private bool toolbarfilter;
		private bool toolbarviewmodes;
		private bool toolbargeometry;
		private bool toolbartesting;
		private bool toolbarfile;
		private float filteranisotropy;
		private bool showtexturesizes;
		private SplitLineBehavior splitlinebehavior;	//mxd

		//mxd
		private ModelRenderMode gzDrawModelsMode;
		private LightRenderMode gzDrawLightsMode;
		private bool gzDrawFog;
		private bool gzToolbarGZDoom;
		private bool gzSynchCameras;
		private bool gzShowEventLines;
		private bool gzOldHighlightMode;
		private int gzMaxDynamicLights;
		private float gzDynamicLightRadius;
		private float gzDynamicLightIntensity;
		private bool gzStretchView;
		private float gzVertexScale2D;
		private bool gzShowVisualVertices;
		private float gzVertexScale3D;
		private string lastUsedConfigName;
		private string lastUsedMapFolder;
		private bool gzMarkExtraFloors;
		private int maxRecentFiles;
		private bool autoClearSideTextures;
		
		// These are not stored in the configuration, only used at runtime
		private int defaultbrightness;
		private int defaultfloorheight;
		private int defaultceilheight;
		private int defaultthingtype = 1;
		private float defaultthingangle;
		private List<string> defaultthingflags;
		
		#endregion

		#region ================== Properties

		internal Configuration Config { get { return cfg; } }
		public bool BlackBrowsers { get { return blackbrowsers; } internal set { blackbrowsers = value; } }
		public bool CapitalizeTextureNames { get { return capitalizetexturenames; } internal set { capitalizetexturenames = value; } } //mxd
		public int VisualFOV { get { return visualfov; } internal set { visualfov = value; } }
		public int ImageBrightness { get { return imagebrightness; } internal set { imagebrightness = value; } }
		public float DoubleSidedAlpha { get { return doublesidedalpha; } internal set { doublesidedalpha = value; doublesidedalphabyte = (byte)(doublesidedalpha * 255f); } }
		public byte DoubleSidedAlphaByte { get { return doublesidedalphabyte; } }
		public float BackgroundAlpha { get { return backgroundalpha; } internal set { backgroundalpha = value; } }
		public float VisualMouseSensX { get { return visualmousesensx; } internal set { visualmousesensx = value; } }
		public float VisualMouseSensY { get { return visualmousesensy; } internal set { visualmousesensy = value; } }
		public bool QualityDisplay { get { return qualitydisplay; } internal set { qualitydisplay = value; } }
		public bool SquareThings { get { return squarethings; } internal set { squarethings = value; } }
		public bool TestMonsters { get { return testmonsters; } internal set { testmonsters = value; } }
		public int DefaultViewMode { get { return defaultviewmode; } internal set { defaultviewmode = value; } }
		public bool ClassicBilinear { get { return classicbilinear; } internal set { classicbilinear = value; } }
		public bool VisualBilinear { get { return visualbilinear; } internal set { visualbilinear = value; } }
		public int MouseSpeed { get { return mousespeed; } internal set { mousespeed = value; } }
		public int MoveSpeed { get { return movespeed; } internal set { movespeed = value; } }
		public float ViewDistance { get { return viewdistance; } internal set { viewdistance = value; } }
		public bool InvertYAxis { get { return invertyaxis; } internal set { invertyaxis = value; } }
		public string ScriptFontName { get { return scriptfontname; } internal set { scriptfontname = value; } }
		public int ScriptFontSize { get { return scriptfontsize; } internal set { scriptfontsize = value; } }
		public bool ScriptFontBold { get { return scriptfontbold; } internal set { scriptfontbold = value; } }
		public bool ScriptOnTop { get { return scriptontop; } internal set { scriptontop = value; } }
		public int PreviewImageSize { get { return previewimagesize; } internal set { previewimagesize = value; } }
		public int AutoScrollSpeed { get { return autoscrollspeed; } internal set { autoscrollspeed = value; } }
		public int ZoomFactor { get { return zoomfactor; } internal set { zoomfactor = value; } }
		public bool ShowErrorsWindow { get { return showerrorswindow; } internal set { showerrorswindow = value; } }
		public bool AnimateVisualSelection { get { return animatevisualselection; } internal set { animatevisualselection = value; } }
		public int ScriptTabWidth { get { return scripttabwidth; } internal set { scripttabwidth = value; } }
		public bool ScriptAutoIndent { get { return scriptautoindent; } internal set { scriptautoindent = value; } }
		public bool SnippetsAllmanStyle { get { return snippetsallmanstyle; } internal set { snippetsallmanstyle = value; } } //mxd
		internal string ScreenshotsPath { get { return screenshotspath; } set { screenshotspath = value; } } //mxd
		internal int PreviousVersion { get { return previousversion; } }
		internal PasteOptions PasteOptions { get { return pasteoptions; } set { pasteoptions = value; } }
		public int DockersPosition { get { return dockersposition; } internal set { dockersposition = value; } }
		public bool CollapseDockers { get { return collapsedockers; } internal set { collapsedockers = value; } }
		public int DockersWidth { get { return dockerswidth; } internal set { dockerswidth = value; } }
		public bool ToolbarScript { get { return toolbarscript; } internal set { toolbarscript = value; } }
		public bool ToolbarUndo { get { return toolbarundo; } internal set { toolbarundo = value; } }
		public bool ToolbarCopy { get { return toolbarcopy; } internal set { toolbarcopy = value; } }
		public bool ToolbarPrefabs { get { return toolbarprefabs; } internal set { toolbarprefabs = value; } }
		public bool ToolbarFilter { get { return toolbarfilter; } internal set { toolbarfilter = value; } }
		public bool ToolbarViewModes { get { return toolbarviewmodes; } internal set { toolbarviewmodes = value; } }
		public bool ToolbarGeometry { get { return toolbargeometry; } internal set { toolbargeometry = value; } }
		public bool ToolbarTesting { get { return toolbartesting; } internal set { toolbartesting = value; } }
		public bool ToolbarFile { get { return toolbarfile; } internal set { toolbarfile = value; } }
		public float FilterAnisotropy { get { return filteranisotropy; } internal set { filteranisotropy = value; } }
		public bool ShowTextureSizes { get { return showtexturesizes; } internal set { showtexturesizes = value; } }
		public SplitLineBehavior SplitLineBehavior { get { return splitlinebehavior; } set { splitlinebehavior = value; } } //mxd

		//mxd 
		public ModelRenderMode GZDrawModelsMode { get { return gzDrawModelsMode; } internal set { gzDrawModelsMode = value; } }
		public LightRenderMode GZDrawLightsMode { get { return gzDrawLightsMode; } internal set { gzDrawLightsMode = value; } }
		public bool GZDrawFog { get { return gzDrawFog; } internal set { gzDrawFog = value; } }
		public bool GZToolbarGZDoom { get { return gzToolbarGZDoom; } internal set { gzToolbarGZDoom = value; } }
		public bool GZSynchCameras { get { return gzSynchCameras; } internal set { gzSynchCameras = value; } }
		public bool GZShowEventLines { get { return gzShowEventLines; } internal set { gzShowEventLines = value; } }
		public bool GZOldHighlightMode { get { return gzOldHighlightMode; } internal set { gzOldHighlightMode = value; } }
		public int GZMaxDynamicLights { get { return gzMaxDynamicLights; } internal set { gzMaxDynamicLights = value; } }
		public float GZDynamicLightRadius { get { return gzDynamicLightRadius; } internal set { gzDynamicLightRadius = value; } }
		public float GZDynamicLightIntensity { get { return gzDynamicLightIntensity; } internal set { gzDynamicLightIntensity = value; } }
		public bool GZStretchView { get { return gzStretchView; } internal set { gzStretchView = value; } }
		public float GZVertexScale2D { get { return gzVertexScale2D; } internal set { gzVertexScale2D = value; } }
		public bool GZShowVisualVertices { get { return gzShowVisualVertices; } internal set { gzShowVisualVertices = value; } }
		public float GZVertexScale3D { get { return gzVertexScale3D; } internal set { gzVertexScale3D = value; } }
		public string LastUsedConfigName { get { return lastUsedConfigName; } internal set { lastUsedConfigName = value; } }
		public string LastUsedMapFolder { get { return lastUsedMapFolder; } internal set { lastUsedMapFolder = value; } }
		public bool GZMarkExtraFloors { get { return gzMarkExtraFloors; } internal set { gzMarkExtraFloors = value; } }
		public int MaxRecentFiles { get { return maxRecentFiles; } internal set { maxRecentFiles = General.Clamp(value, 8, 25); } }
		public bool AutoClearSidedefTextures { get { return autoClearSideTextures; } internal set { autoClearSideTextures = value; } }

		//mxd. Left here for compatibility reasons...
		public string DefaultTexture { get { return General.Map != null ? General.Map.Options.DefaultWallTexture : "-"; } set { if(General.Map != null) General.Map.Options.DefaultWallTexture = value; } }
		public string DefaultFloorTexture { get { return General.Map != null ? General.Map.Options.DefaultFloorTexture : "-"; } set { if(General.Map != null) General.Map.Options.DefaultFloorTexture = value; } }
		public string DefaultCeilingTexture { get { return General.Map != null ? General.Map.Options.DefaultCeilingTexture : "-"; } set { if(General.Map != null) General.Map.Options.DefaultCeilingTexture = value; } }
		public int DefaultBrightness { get { return defaultbrightness; } set { defaultbrightness = value; } }
		public int DefaultFloorHeight { get { return defaultfloorheight; } set { defaultfloorheight = value; } }
		public int DefaultCeilingHeight { get { return defaultceilheight; } set { defaultceilheight = value; } }

		public int DefaultThingType { get { return defaultthingtype; } set { defaultthingtype = value; } }
		public float DefaultThingAngle { get { return defaultthingangle; } set { defaultthingangle = value; } }

		#endregion

		#region ================== Constructor / Disposer

		// Constructor
		internal ProgramConfiguration()
		{
			// We have no destructor
			GC.SuppressFinalize(this);
			defaultthingflags = new List<string>();
			pasteoptions = new PasteOptions();
		}

		#endregion

		#region ================== Loading / Saving

		// This loads the program configuration
		internal bool Load(string cfgfilepathname, string defaultfilepathname)
		{
			// First parse it
			if(Read(cfgfilepathname, defaultfilepathname))
			{
				// Read the cache variables
				blackbrowsers = cfg.ReadSetting("blackbrowsers", false);
				capitalizetexturenames = cfg.ReadSetting("capitalizetexturenames", true); //mxd
				//undolevels = cfg.ReadSetting("undolevels", 20);
				visualfov = cfg.ReadSetting("visualfov", 80);
				visualmousesensx = cfg.ReadSetting("visualmousesensx", 40f);
				visualmousesensy = cfg.ReadSetting("visualmousesensy", 40f);
				imagebrightness = cfg.ReadSetting("imagebrightness", 3);
				doublesidedalpha = cfg.ReadSetting("doublesidedalpha", 0.4f);
				doublesidedalphabyte = (byte)(doublesidedalpha * 255f);
				backgroundalpha = cfg.ReadSetting("backgroundalpha", 1.0f);
				qualitydisplay = cfg.ReadSetting("qualitydisplay", true);
				squarethings = cfg.ReadSetting("squarethings", false);
				testmonsters = cfg.ReadSetting("testmonsters", true);
				defaultviewmode = cfg.ReadSetting("defaultviewmode", (int)ViewMode.Normal);
				classicbilinear = cfg.ReadSetting("classicbilinear", false);
				visualbilinear = cfg.ReadSetting("visualbilinear", false);
				mousespeed = cfg.ReadSetting("mousespeed", 100);
				movespeed = cfg.ReadSetting("movespeed", 100);
				viewdistance = cfg.ReadSetting("viewdistance", 3000.0f);
				invertyaxis = cfg.ReadSetting("invertyaxis", false);
				scriptfontname = cfg.ReadSetting("scriptfontname", "Lucida Console");
				scriptfontsize = cfg.ReadSetting("scriptfontsize", 10);
				scriptfontbold = cfg.ReadSetting("scriptfontbold", false);
				scriptautoindent = cfg.ReadSetting("scriptautoindent", true);
				snippetsallmanstyle = cfg.ReadSetting("snippetsallmanstyle", false); //mxd
				screenshotspath = cfg.ReadSetting("screenshotspath", General.DefaultScreenshotsPath); //mxd
				scriptontop = cfg.ReadSetting("scriptontop", true);
				scripttabwidth = cfg.ReadSetting("scripttabwidth", 4);
				previewimagesize = cfg.ReadSetting("previewimagesize", 1);
				autoscrollspeed = cfg.ReadSetting("autoscrollspeed", 0);
				zoomfactor = cfg.ReadSetting("zoomfactor", 3);
				showerrorswindow = cfg.ReadSetting("showerrorswindow", true);
				animatevisualselection = cfg.ReadSetting("animatevisualselection", true);
				previousversion = cfg.ReadSetting("currentversion", 0);
				dockersposition = cfg.ReadSetting("dockersposition", 1);
				collapsedockers = cfg.ReadSetting("collapsedockers", true);
				dockerswidth = cfg.ReadSetting("dockerswidth", 300);
				pasteoptions.ReadConfiguration(cfg, "pasteoptions");
				toolbarscript = cfg.ReadSetting("toolbarscript", true);
				toolbarundo = cfg.ReadSetting("toolbarundo", false);
				toolbarcopy = cfg.ReadSetting("toolbarcopy", false);
				toolbarprefabs = cfg.ReadSetting("toolbarprefabs", true);
				toolbarfilter = cfg.ReadSetting("toolbarfilter", true);
				toolbarviewmodes = cfg.ReadSetting("toolbarviewmodes", false);
				toolbargeometry = cfg.ReadSetting("toolbargeometry", true);
				toolbartesting = cfg.ReadSetting("toolbartesting", true);
				toolbarfile = cfg.ReadSetting("toolbarfile", true);
				filteranisotropy = cfg.ReadSetting("filteranisotropy", 8.0f);
				showtexturesizes = cfg.ReadSetting("showtexturesizes", true);
				splitlinebehavior = (SplitLineBehavior) General.Clamp(cfg.ReadSetting("splitlinebehavior", 0), 0, 3); //mxd

				//mxd 
				gzDrawModelsMode = (ModelRenderMode)cfg.ReadSetting("gzdrawmodels", (int)ModelRenderMode.ALL);
				gzDrawLightsMode = (LightRenderMode)cfg.ReadSetting("gzdrawlights", (int)LightRenderMode.ALL);
				gzDrawFog = cfg.ReadSetting("gzdrawfog", false);
				gzToolbarGZDoom = cfg.ReadSetting("gztoolbargzdoom", true);
				gzSynchCameras = cfg.ReadSetting("gzsynchcameras", true);
				gzShowEventLines = cfg.ReadSetting("gzshoweventlines", true);
				gzOldHighlightMode = cfg.ReadSetting("gzoldhighlightmode", false);
				gzMaxDynamicLights = cfg.ReadSetting("gzmaxdynamiclights", 16);
				gzDynamicLightRadius = cfg.ReadSetting("gzdynamiclightradius", 1.0f);
				gzDynamicLightIntensity = cfg.ReadSetting("gzdynamiclightintensity", 1.0f);
				gzStretchView = cfg.ReadSetting("gzstretchview", true);
				gzVertexScale2D = cfg.ReadSetting("gzvertexscale2d", 1.0f);
				gzShowVisualVertices = cfg.ReadSetting("gzshowvisualvertices", true);
				gzVertexScale3D = cfg.ReadSetting("gzvertexscale3d", 1.0f);
				lastUsedConfigName = cfg.ReadSetting("lastusedconfigname", "");
				lastUsedMapFolder = cfg.ReadSetting("lastusedmapfolder", "");
				gzMarkExtraFloors = cfg.ReadSetting("gzmarkextrafloors", true);
				maxRecentFiles = cfg.ReadSetting("maxrecentfiles", 8);
				autoClearSideTextures = cfg.ReadSetting("autoclearsidetextures", true);

				//mxd. Sector defaults
				defaultceilheight = cfg.ReadSetting("defaultceilheight", 128);
				defaultfloorheight = cfg.ReadSetting("defaultfloorheight", 0);
				defaultbrightness = cfg.ReadSetting("defaultbrightness", 192);
				
				// Success
				return true;
			}
			// Failed
			return false;
		}

		// This saves the program configuration
		internal void Save(string filepathname)
		{
			Version v = General.ThisAssembly.GetName().Version;
			
			// Write the cache variables
			cfg.WriteSetting("blackbrowsers", blackbrowsers);
			cfg.WriteSetting("capitalizetexturenames", capitalizetexturenames); //mxd
			//cfg.WriteSetting("undolevels", undolevels);
			cfg.WriteSetting("visualfov", visualfov);
			cfg.WriteSetting("visualmousesensx", visualmousesensx);
			cfg.WriteSetting("visualmousesensy", visualmousesensy);
			cfg.WriteSetting("imagebrightness", imagebrightness);
			cfg.WriteSetting("qualitydisplay", qualitydisplay);
			cfg.WriteSetting("squarethings", squarethings);
			cfg.WriteSetting("testmonsters", testmonsters);
			cfg.WriteSetting("doublesidedalpha", doublesidedalpha);
			cfg.WriteSetting("backgroundalpha", backgroundalpha);
			cfg.WriteSetting("defaultviewmode", defaultviewmode);
			cfg.WriteSetting("classicbilinear", classicbilinear);
			cfg.WriteSetting("visualbilinear", visualbilinear);
			cfg.WriteSetting("mousespeed", mousespeed);
			cfg.WriteSetting("movespeed", movespeed);
			cfg.WriteSetting("viewdistance", viewdistance);
			cfg.WriteSetting("invertyaxis", invertyaxis);
			cfg.WriteSetting("scriptfontname", scriptfontname);
			cfg.WriteSetting("scriptfontsize", scriptfontsize);
			cfg.WriteSetting("scriptfontbold", scriptfontbold);
			cfg.WriteSetting("scriptontop", scriptontop);
			cfg.WriteSetting("scripttabwidth", scripttabwidth);
			cfg.WriteSetting("scriptautoindent", scriptautoindent);
			cfg.WriteSetting("snippetsallmanstyle", snippetsallmanstyle); //mxd
			cfg.WriteSetting("screenshotspath", screenshotspath); //mxd
			cfg.WriteSetting("previewimagesize", previewimagesize);
			cfg.WriteSetting("autoscrollspeed", autoscrollspeed);
			cfg.WriteSetting("zoomfactor", zoomfactor);
			cfg.WriteSetting("showerrorswindow", showerrorswindow);
			cfg.WriteSetting("animatevisualselection", animatevisualselection);
			cfg.WriteSetting("currentversion", v.Major * 1000000 + v.Revision);
			cfg.WriteSetting("dockersposition", dockersposition);
			cfg.WriteSetting("collapsedockers", collapsedockers);
			cfg.WriteSetting("dockerswidth", dockerswidth);
			pasteoptions.WriteConfiguration(cfg, "pasteoptions");
			cfg.WriteSetting("toolbarscript", toolbarscript);
			cfg.WriteSetting("toolbarundo", toolbarundo);
			cfg.WriteSetting("toolbarcopy", toolbarcopy);
			cfg.WriteSetting("toolbarprefabs", toolbarprefabs);
			cfg.WriteSetting("toolbarfilter", toolbarfilter);
			cfg.WriteSetting("toolbarviewmodes", toolbarviewmodes);
			cfg.WriteSetting("toolbargeometry", toolbargeometry);
			cfg.WriteSetting("toolbartesting", toolbartesting);
			cfg.WriteSetting("toolbarfile", toolbarfile);
			cfg.WriteSetting("filteranisotropy", filteranisotropy);
			cfg.WriteSetting("showtexturesizes", showtexturesizes);
			cfg.WriteSetting("splitlinebehavior", (int)splitlinebehavior); //mxd

			//mxd
			cfg.WriteSetting("gzdrawmodels", (int)gzDrawModelsMode);
			cfg.WriteSetting("gzdrawlights", (int)gzDrawLightsMode);
			cfg.WriteSetting("gzdrawfog", gzDrawFog);
			cfg.WriteSetting("gzsynchcameras", gzSynchCameras);
			cfg.WriteSetting("gzshoweventlines", gzShowEventLines);
			cfg.WriteSetting("gzoldhighlightmode", gzOldHighlightMode);
			cfg.WriteSetting("gztoolbargzdoom", gzToolbarGZDoom);
			cfg.WriteSetting("gzmaxdynamiclights", gzMaxDynamicLights);
			cfg.WriteSetting("gzdynamiclightradius", gzDynamicLightRadius);
			cfg.WriteSetting("gzdynamiclightintensity", gzDynamicLightIntensity);
			cfg.WriteSetting("gzstretchview", gzStretchView);
			cfg.WriteSetting("gzvertexscale2d", gzVertexScale2D);
			cfg.WriteSetting("gzshowvisualvertices", gzShowVisualVertices);
			cfg.WriteSetting("gzvertexscale3d", gzVertexScale3D);
			cfg.WriteSetting("gzmarkextrafloors", gzMarkExtraFloors);
			if(!string.IsNullOrEmpty(lastUsedConfigName))
				cfg.WriteSetting("lastusedconfigname", lastUsedConfigName);
			if(!string.IsNullOrEmpty(lastUsedMapFolder))
				cfg.WriteSetting("lastusedmapfolder", lastUsedMapFolder);
			cfg.WriteSetting("maxrecentfiles", maxRecentFiles);
			cfg.WriteSetting("autoclearsidetextures", autoClearSideTextures);

			//mxd. Sector defaults
			cfg.WriteSetting("defaultceilheight", defaultceilheight);
			cfg.WriteSetting("defaultfloorheight", defaultfloorheight);
			cfg.WriteSetting("defaultbrightness", defaultbrightness);
			
			// Save settings configuration
			General.WriteLogLine("Saving program configuration...");
			cfg.SaveConfiguration(filepathname);
		}
		
		// This reads the configuration
		private bool Read(string cfgfilepathname, string defaultfilepathname)
		{
			DialogResult result;

			// Check if no config for this user exists yet
			if(!File.Exists(cfgfilepathname))
			{
				// Copy new configuration
				General.WriteLogLine("Local user program configuration is missing!");
				File.Copy(defaultfilepathname, cfgfilepathname);
				General.WriteLogLine("New program configuration copied for local user");
			}

			// Load it
			cfg = new Configuration(cfgfilepathname, true);
			if(cfg.ErrorResult)
			{
				// Error in configuration
				// Ask user for a new copy
				result = General.ShowErrorMessage("Error in program configuration near line " + cfg.ErrorLine + ": " + cfg.ErrorDescription + "\n\nWould you like to overwrite your settings with a new configuration to restore the default settings?", MessageBoxButtons.YesNoCancel);
				if(result == DialogResult.Yes)
				{
					// Remove old configuration and make a new copy
					General.WriteLogLine("User requested a new copy of the program configuration");
					File.Delete(cfgfilepathname);
					File.Copy(defaultfilepathname, cfgfilepathname);
					General.WriteLogLine("New program configuration copied for local user");

					// Load it
					cfg = new Configuration(cfgfilepathname, true);
					if(cfg.ErrorResult)
					{
						// Error in configuration
						General.WriteLogLine("Error in program configuration near line " + cfg.ErrorLine + ": " + cfg.ErrorDescription);
						General.ShowErrorMessage("Default program configuration is corrupted. Please re-install Doom Builder.", MessageBoxButtons.OK);
						return false;
					}
				}
				else if(result == DialogResult.Cancel)
				{
					// User requested to cancel startup
					General.WriteLogLine("User cancelled startup");
					return false;
				}
			}
			
			// Check if a version number is missing
			previousversion = cfg.ReadSetting("currentversion", -1);
			if(!General.NoSettings && (previousversion == -1))
			{
				// Remove old configuration and make a new copy
				General.WriteLogLine("Program configuration is outdated, new configuration will be copied for local user");
				File.Delete(cfgfilepathname);
				File.Copy(defaultfilepathname, cfgfilepathname);
				
				// Load it
				cfg = new Configuration(cfgfilepathname, true);
				if(cfg.ErrorResult)
				{
					// Error in configuration
					General.WriteLogLine("Error in program configuration near line " + cfg.ErrorLine + ": " + cfg.ErrorDescription);
					General.ShowErrorMessage("Default program configuration is corrupted. Please re-install Doom Builder.", MessageBoxButtons.OK);
					return false;
				}
			}
			
			// Success
			return true;
		}
		
		#endregion

		#region ================== Methods

		// This makes the path prefix for the given assembly
		private string GetPluginPathPrefix(Assembly asm)
		{
			Plugin p = General.Plugins.FindPluginByAssembly(asm);
			return GetPluginPathPrefix(p.Name);
		}

		// This makes the path prefix for the given assembly
		private static string GetPluginPathPrefix(string assemblyname)
		{
			return "plugins." + assemblyname.ToLowerInvariant() + ".";
		}

		// ReadPluginSetting
		public string ReadPluginSetting(string setting, string defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public int ReadPluginSetting(string setting, int defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public float ReadPluginSetting(string setting, float defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public short ReadPluginSetting(string setting, short defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public long ReadPluginSetting(string setting, long defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public bool ReadPluginSetting(string setting, bool defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public byte ReadPluginSetting(string setting, byte defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }
		public IDictionary ReadPluginSetting(string setting, IDictionary defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, defaultsetting); }

		// ReadPluginSetting with specific plugin
		public string ReadPluginSetting(string pluginname, string setting, string defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public int ReadPluginSetting(string pluginname, string setting, int defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public float ReadPluginSetting(string pluginname, string setting, float defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public short ReadPluginSetting(string pluginname, string setting, short defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public long ReadPluginSetting(string pluginname, string setting, long defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public bool ReadPluginSetting(string pluginname, string setting, bool defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public byte ReadPluginSetting(string pluginname, string setting, byte defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		public IDictionary ReadPluginSetting(string pluginname, string setting, IDictionary defaultsetting) { return cfg.ReadSetting(GetPluginPathPrefix(pluginname) + setting, defaultsetting); }
		
		// WritePluginSetting
		public bool WritePluginSetting(string setting, object settingvalue) { return cfg.WriteSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting, settingvalue); }
		
		// DeletePluginSetting
		public bool DeletePluginSetting(string setting) { return cfg.DeleteSetting(GetPluginPathPrefix(Assembly.GetCallingAssembly()) + setting); }

		// ReadSetting
		internal string ReadSetting(string setting, string defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal int ReadSetting(string setting, int defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal float ReadSetting(string setting, float defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal short ReadSetting(string setting, short defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal long ReadSetting(string setting, long defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal bool ReadSetting(string setting, bool defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal byte ReadSetting(string setting, byte defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }
		internal IDictionary ReadSetting(string setting, IDictionary defaultsetting) { return cfg.ReadSetting(setting, defaultsetting); }

		// WriteSetting
		internal bool WriteSetting(string setting, object settingvalue) { return cfg.WriteSetting(setting, settingvalue); }
		internal bool WriteSetting(string setting, object settingvalue, string pathseperator) { return cfg.WriteSetting(setting, settingvalue, pathseperator); }

		// DeleteSetting
		internal bool DeleteSetting(string setting) { return cfg.DeleteSetting(setting); }
		internal bool DeleteSetting(string setting, string pathseperator) { return cfg.DeleteSetting(setting, pathseperator); }

		#endregion

		#region ================== Default Settings

		// This sets the default thing flags
		public void SetDefaultThingFlags(ICollection<string> setflags)
		{
			defaultthingflags = new List<string>(setflags);
		}

		// This applies default settings to a thing
		public void ApplyDefaultThingSettings(Thing t)
		{
			t.Type = defaultthingtype;
			t.Rotate(defaultthingangle);
			foreach(string f in defaultthingflags) t.SetFlag(f, true);

			//mxd. Set default arguments
			ThingTypeInfo tti = General.Map.Data.GetThingInfoEx(t.Type);
			if (tti != null) {
				t.Args[0] = (int)tti.Args[0].DefaultValue;
				t.Args[1] = (int)tti.Args[1].DefaultValue;
				t.Args[2] = (int)tti.Args[2].DefaultValue;
				t.Args[3] = (int)tti.Args[3].DefaultValue;
				t.Args[4] = (int)tti.Args[4].DefaultValue;
			}
		}
		
		// This attempts to find the default drawing settings
		public void FindDefaultDrawSettings()
		{
			bool foundone;
			
			// Only possible when a map is loaded
			if(General.Map == null || General.Map.Options == null) return;
			
			// Default texture missing?
			if(!General.Map.Options.OverrideMiddleTexture || string.IsNullOrEmpty(General.Map.Options.DefaultWallTexture)) //mxd
			{
				// Find default texture from map
				foundone = false;
				foreach(Sidedef sd in General.Map.Map.Sidedefs)
				{
					if(sd.MiddleTexture != "-")
					{
						General.Map.Options.DefaultWallTexture = sd.MiddleTexture;
						if(General.Map.Data.GetTextureExists(sd.MiddleTexture))
						{
							foundone = true;
							break;
						}
					}
				}
				
				// Not found yet?
				if(!foundone)
				{
					// Pick the first STARTAN from the list.
					// I love the STARTAN texture as default for some reason.
					foreach(string s in General.Map.Data.TextureNames)
					{
						if(s.StartsWith("STARTAN"))
						{
							foundone = true;
							General.Map.Options.DefaultWallTexture = s;
							break;
						}
					}
					
					// Otherwise just pick the first
					if(!foundone)
					{
						if(General.Map.Data.TextureNames.Count > 1)
							General.Map.Options.DefaultWallTexture = General.Map.Data.TextureNames[1];
					}
				}
			}

			//mxd.
			if(!General.Map.Options.OverrideTopTexture) General.Map.Options.DefaultTopTexture = General.Map.Options.DefaultWallTexture;
			if(!General.Map.Options.OverrideBottomTexture) General.Map.Options.DefaultBottomTexture = General.Map.Options.DefaultWallTexture;

			// Default floor missing?
			if(!General.Map.Options.OverrideFloorTexture || string.IsNullOrEmpty(General.Map.Options.DefaultFloorTexture))
			{
				// Find default texture from map
				foundone = false;
				if(General.Map.Map.Sectors.Count > 0)
				{
					// Find one that is known
					foreach(Sector s in General.Map.Map.Sectors)
					{
						General.Map.Options.DefaultFloorTexture = s.FloorTexture;
						if(General.Map.Data.GetFlatExists(General.Map.Options.DefaultFloorTexture))
						{
							foundone = true;
							break;
						}
					}
				}
				
				// Pick the first FLOOR from the list.
				if(!foundone)
				{
					foreach(string s in General.Map.Data.FlatNames)
					{
						if(s.StartsWith("FLOOR"))
						{
							foundone = true;
							General.Map.Options.DefaultFloorTexture = s;
							break;
						}
					}
				}
				
				// Otherwise just pick the first
				if(!foundone)
				{
					if(General.Map.Data.FlatNames.Count > 1)
						General.Map.Options.DefaultFloorTexture = General.Map.Data.FlatNames[1];
				}
			}
			
			// Default ceiling missing?
			if(!General.Map.Options.OverrideCeilingTexture || string.IsNullOrEmpty(General.Map.Options.DefaultCeilingTexture))
			{
				// Find default texture from map
				foundone = false;
				if(General.Map.Map.Sectors.Count > 0)
				{
					// Find one that is known
					foreach(Sector s in General.Map.Map.Sectors)
					{
						General.Map.Options.DefaultCeilingTexture = s.CeilTexture;
						if(General.Map.Data.GetFlatExists(General.Map.Options.DefaultCeilingTexture))
						{
							foundone = true;
							break;
						}
					}
				}
				
				// Pick the first CEIL from the list.
				if(!foundone)
				{
					foreach(string s in General.Map.Data.FlatNames)
					{
						if(s.StartsWith("CEIL"))
						{
							foundone = true;
							General.Map.Options.DefaultCeilingTexture = s;
							break;
						}
					}
				}
				
				// Otherwise just pick the first
				if(!foundone)
				{
					if(General.Map.Data.FlatNames.Count > 1)
						General.Map.Options.DefaultCeilingTexture = General.Map.Data.FlatNames[1];
				}
			}

			// Texture names may not be null
			if(string.IsNullOrEmpty(General.Map.Options.DefaultTopTexture)) General.Map.Options.DefaultTopTexture = "-";
			if(string.IsNullOrEmpty(General.Map.Options.DefaultWallTexture)) General.Map.Options.DefaultWallTexture = "-";
			if(string.IsNullOrEmpty(General.Map.Options.DefaultBottomTexture)) General.Map.Options.DefaultBottomTexture = "-";
			if(string.IsNullOrEmpty(General.Map.Options.DefaultFloorTexture)) General.Map.Options.DefaultFloorTexture = "-";
			if(string.IsNullOrEmpty(General.Map.Options.DefaultCeilingTexture)) General.Map.Options.DefaultCeilingTexture = "-";
		}
		
		#endregion
	}
}