diff options
Diffstat (limited to 'Game/Code/Classes/uPluginLoader.pas')
| -rw-r--r-- | Game/Code/Classes/uPluginLoader.pas | 786 |
1 files changed, 786 insertions, 0 deletions
diff --git a/Game/Code/Classes/uPluginLoader.pas b/Game/Code/Classes/uPluginLoader.pas index 929fd84e..fadea0c6 100644 --- a/Game/Code/Classes/uPluginLoader.pas +++ b/Game/Code/Classes/uPluginLoader.pas @@ -1,7 +1,793 @@ unit uPluginLoader;
+{*********************
+ uPluginLoader
+ Unit contains to Classes
+ TPluginLoader: Class Searching for and Loading the Plugins
+ TtehPlugins: Class that represents the Plugins in Modules chain
+*********************}
interface
+uses UPluginDefs, UCoreModule;
+{$IFDEF FPC}
+ {$MODE DELPHI} +{$ENDIF}
+
+type
+ TPluginListItem = record
+ Info: TUS_PluginInfo;
+ State: Byte; //State of this Plugin: 0 - undefined; 1 - Loaded; 2 - Inited / Running; 4 - Unloaded; 254 - Loading aborted by Plugin; 255 - Unloaded because of Error
+ Path: String; //Path to this Plugin
+ NeedsDeInit: Boolean; //If this is Inited correctly this should be true
+ hLib: THandle; //Handle of Loaded Libary
+ Procs: record //Procs offered by Plugin. Don't call this directly use wrappers of TPluginLoader
+ Load: Func_Load;
+ Init: Func_Init;
+ DeInit: Proc_DeInit;
+ end;
+ end;
+ {*********************
+ TPluginLoader
+ Class Searches for Plugins and Manages loading and unloading
+ *********************}
+ PPluginLoader = ^TPluginLoader;
+ TPluginLoader = class (TCoreModule)
+ private
+ LoadingProcessFinished: Boolean;
+ sUnloadPlugin: THandle;
+ sLoadPlugin: THandle;
+ sGetPluginInfo: THandle;
+ sGetPluginState: THandle;
+
+ Procedure FreePlugin(Index: Cardinal);
+ public
+ PluginInterface: TUS_PluginInterface;
+ Plugins: Array of TPluginListItem;
+
+ //TCoreModule methods to inherit
+ Constructor Create; override;
+ Procedure Info(const pInfo: PModuleInfo); override;
+ Function Load: Boolean; override;
+ Function Init: Boolean; override;
+ Procedure DeInit; override;
+ Procedure Free; override;
+
+ //New Methods
+ Procedure BrowseDir(Path: String); //Browses the Path at _Path_ for Plugins
+ Function PluginExists(Name: String): Integer; //If Plugin Exists: Index of Plugin, else -1
+ Procedure AddPlugin(Filename: String);//Adds Plugin to the Array
+
+ Function CallLoad(Index: Cardinal): Integer;
+ Function CallInit(Index: Cardinal): Integer;
+ Procedure CallDeInit(Index: Cardinal);
+
+ //Services offered
+ Function LoadPlugin(wParam, lParam: DWord): integer; //wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+ Function UnloadPlugin(wParam, lParam: DWord): integer; //wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+ Function GetPluginInfo(wParam, lParam: DWord): integer; //If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Get PluginInfo of Plugin with Index(wParam) to Address at lParam)
+ Function GetPluginState(wParam, lParam: DWord): integer; //If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Return PluginInfo of Plugin with Index(wParam))
+
+ end;
+
+ {*********************
+ TtehPlugins
+ Class Represents the Plugins in Module Chain.
+ It Calls the Plugins Procs and Funcs
+ *********************}
+ TtehPlugins = class (TCoreModule)
+ private
+ PluginLoader: PPluginLoader;
+ public
+ //TCoreModule methods to inherit
+ Constructor Create; override;
+
+ Procedure Info(const pInfo: PModuleInfo); override;
+ Function Load: Boolean; override;
+ Function Init: Boolean; override;
+ Procedure DeInit; override;
+ end;
+
+const
+ {$IFDEF win32}
+ PluginFileExtension = '.dll';
+ {$ELSE}
+ PluginFileExtension = '.so';
+ {$ENDIF}
implementation
+uses UCore, UPluginInterface,
+{$IFDEF win32}
+ windows, +{$ELSE} + dynlibs, +{$ENDIF} +UMain, SysUtils;
+
+{*********************
+ TPluginLoader
+ Implentation
+*********************}
+
+//-------------
+// Function that gives some Infos about the Module to the Core
+//-------------
+Procedure TPluginLoader.Info(const pInfo: PModuleInfo);
+begin
+ pInfo^.Name := 'TPluginLoader';
+ pInfo^.Version := MakeVersion(1,0,0,chr(0));
+ pInfo^.Description := 'Searches for Plugins, loads and unloads them';
+end;
+
+//-------------
+// Just the Constructor
+//-------------
+Constructor TPluginLoader.Create;
+begin
+ //Init PluginInterface
+ //Using Methods from UPluginInterface
+ PluginInterface.CreateHookableEvent := CreateHookableEvent;
+ PluginInterface.DestroyHookableEvent := DestroyHookableEvent;
+ PluginInterface.NotivyEventHooks := NotivyEventHooks;
+ PluginInterface.HookEvent := HookEvent;
+ PluginInterface.UnHookEvent := UnHookEvent;
+ PluginInterface.EventExists := EventExists;
+
+ PluginInterface.CreateService := CreateService;
+ PluginInterface.DestroyService := DestroyService;
+ PluginInterface.CallService := CallService;
+ PluginInterface.ServiceExists := ServiceExists;
+
+ //UnSet Private Var
+ LoadingProcessFinished := False;
+end;
+
+//-------------
+//Is Called on Loading.
+//In this Method only Events and Services should be created
+//to offer them to other Modules or Plugins during the Init process
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TPluginLoader.Load: Boolean;
+begin
+ Result := True;
+
+ Try
+ //Start Searching for Plugins
+ BrowseDir(PluginPath);
+ Except
+ Result := False;
+ Core.ReportError(Integer(PChar('Error Browsing and Loading.')), Integer(PChar('TPluginLoader')));
+ end;
+end;
+
+//-------------
+//Is Called on Init Process
+//In this Method you can Hook some Events and Create + Init
+//your Classes, Variables etc.
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TPluginLoader.Init: Boolean;
+begin
+ //Just set Prvate Var to true.
+ LoadingProcessFinished := True;
+ Result := True;
+end;
+
+//-------------
+//Is Called if this Module has been Inited and there is a Exit.
+//Deinit is in backwards Initing Order
+//-------------
+Procedure TPluginLoader.DeInit;
+var
+ I: Integer;
+begin
+ //Force DeInit
+ //If some Plugins aren't DeInited for some Reason o0
+ For I := 0 to High(Plugins) do
+ begin
+ If (Plugins[I].State < 4) then
+ FreePlugin(I);
+ end;
+
+ //Nothing to do here. Core will remove the Hooks
+end;
+
+//-------------
+//Is Called if this Module will be unloaded and has been created
+//Should be used to Free Memory
+//-------------
+Procedure TPluginLoader.Free;
+begin
+ //Just save some Memory if it wasn't done now..
+ SetLength(Plugins, 0);
+end;
+
+//--------------
+// Browses the Path at _Path_ for Plugins
+//--------------
+Procedure TPluginLoader.BrowseDir(Path: String);
+var
+ SR: TSearchRec;
+begin
+ //Search for other Dirs to Browse
+ if FindFirst(Path + '*', faDirectory, SR) = 0 then begin
+ repeat
+ if (SR.Name <> '.') and (SR.Name <> '..') then
+ BrowseDir(Path + Sr.Name + PathDelim);
+ until FindNext(SR) <> 0;
+ end;
+ FindClose(SR);
+
+ //Search for Plugins at Path
+ if FindFirst(Path + '*' + PluginFileExtension, 0, SR) = 0 then
+ begin
+ repeat
+ AddPlugin(Path + SR.Name);
+ until FindNext(SR) <> 0;
+ end;
+ FindClose(SR);
+end;
+
+//--------------
+// If Plugin Exists: Index of Plugin, else -1
+//--------------
+Function TPluginLoader.PluginExists(Name: String): Integer;
+var
+ I: Integer;
+begin
+ Result := -1;
+
+ If (Length(Name) <= 32 { =>Length(TUS_PluginInfo.Name)}) then
+ begin
+ For I := 0 to High(Plugins) do
+ if (Plugins[I].Info.Name = Name) then
+ begin //Found the Plugin
+ Result := I;
+ Break;
+ end;
+ end;
+end;
+
+//--------------
+// Adds Plugin to the Array
+//--------------
+Procedure TPluginLoader.AddPlugin(Filename: String);
+var
+ hLib: THandle;
+ PInfo: Proc_PluginInfo;
+ Info: TUS_PluginInfo;
+ PluginID: Integer;
+begin
+ If (FileExists(Filename)) then
+ begin //Load Libary
+ hLib := LoadLibrary(PChar(Filename));
+ If (hLib <> 0) then
+ begin //Try to get Address of the Info Proc
+ PInfo := GetProcAddress (hLib, PChar('USPlugin_Info'));
+ If (@PInfo <> nil) then
+ begin
+ Info.cbSize := SizeOf(TUS_PluginInfo);
+
+ Try //Call Info Proc
+ PInfo(@Info);
+ Except
+ Info.Name := '';
+ Core.ReportError(Integer(PChar('Error getting Plugin Info: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+
+ //Is Name set ?
+ If (Trim(Info.Name) <> '') then
+ begin
+ PluginID := PluginExists(Info.Name);
+
+ If (PluginID > 0) AND (Plugins[PluginID].State >=4) then
+ PluginID := -1;
+
+ If (PluginID = -1) then
+ begin
+ //Add new item to array
+ PluginID := Length(Plugins);
+ SetLength(Plugins, PluginID + 1);
+
+ //Fill with Info:
+ Plugins[PluginID].Info := Info;
+ Plugins[PluginID].State := 0;
+ Plugins[PluginID].Path := Filename;
+ Plugins[PluginID].NeedsDeInit := False;
+ Plugins[PluginID].hLib := hLib;
+
+ //Try to get Procs
+ Plugins[PluginID].Procs.Load := GetProcAddress (hLib, PChar('USPlugin_Load'));
+ Plugins[PluginID].Procs.Init := GetProcAddress (hLib, PChar('USPlugin_Init'));
+ Plugins[PluginID].Procs.DeInit := GetProcAddress (hLib, PChar('USPlugin_DeInit'));
+
+ If (@Plugins[PluginID].Procs.Load = nil) OR (@Plugins[PluginID].Procs.Init = nil) OR (@Plugins[PluginID].Procs.DeInit = nil) then
+ begin
+ Plugins[PluginID].State := 255;
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('Can''t get Plugin Procs from Libary: "' + Info.Name + '" ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+
+ //Emulate loading process if this Plugin is loaded to late
+ If (LoadingProcessFinished) then
+ begin
+ CallLoad(PluginID);
+ CallInit(PluginID);
+ end;
+ end
+ Else If (LoadingProcessFinished = False) then
+ begin
+ If (Plugins[PluginID].Info.Version < Info.Version) then
+ begin //Found newer Version of this Plugin
+ Core.ReportDebug(Integer(PChar('Found a newer Version of Plugin: ' + Info.Name)), Integer(PChar('TPluginLoader')));
+
+ //Unload Old Plugin
+ UnloadPlugin(Integer(nil), PluginID);
+
+ //Fill with new Info
+ Plugins[PluginID].Info := Info;
+ Plugins[PluginID].State := 0;
+ Plugins[PluginID].Path := Filename;
+ Plugins[PluginID].NeedsDeInit := False;
+ Plugins[PluginID].hLib := hLib;
+
+ //Try to get Procs
+ Plugins[PluginID].Procs.Load := GetProcAddress (hLib, PChar('USPlugin_Load'));
+ Plugins[PluginID].Procs.Init := GetProcAddress (hLib, PChar('USPlugin_Init'));
+ Plugins[PluginID].Procs.DeInit := GetProcAddress (hLib, PChar('USPlugin_DeInit'));
+
+ If (@Plugins[PluginID].Procs.Load = nil) OR (@Plugins[PluginID].Procs.Init = nil) OR (@Plugins[PluginID].Procs.DeInit = nil) then
+ begin
+ FreeLibrary(hLib);
+ Plugins[PluginID].State := 255;
+ Core.ReportError(Integer(PChar('Can''t get Plugin Procs from Libary: "' + Info.Name + '" ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ begin //Newer Version already loaded
+ FreeLibrary(hLib);
+ end;
+ end
+ else
+ begin
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('Plugin with this Name already exists: ' + Info.Name)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ begin
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('No name reported: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ begin
+ FreeLibrary(hLib);
+ Core.ReportError(Integer(PChar('Can''t find Info Procedure: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+ end
+ else
+ Core.ReportError(Integer(PChar('Can''t load Plugin Libary: ' + Filename)), Integer(PChar('TPluginLoader')));
+ end;
+end;
+
+//--------------
+// Calls Load Func of Plugin with the given Index
+//--------------
+Function TPluginLoader.CallLoad(Index: Cardinal): Integer;
+begin
+ Result := -2;
+ If(Index < Length(Plugins)) then
+ begin
+ If (@Plugins[Index].Procs.Load <> nil) AND (Plugins[Index].State = 0) then
+ begin
+ Try
+ Result := Plugins[Index].Procs.Load(@PluginInterface);
+ Except
+ Result := -3;
+ End;
+
+ If (Result = 0) then
+ Plugins[Index].State := 1
+ Else
+ begin
+ FreePlugin(Index);
+ Plugins[Index].State := 255;
+ Core.ReportError(Integer(PChar('Error calling Load Function from Plugin: ' + Plugins[Index].Info.Name)), Integer(PChar('TPluginLoader')));
+ end;
+ end;
+ end;
+end;
+
+//--------------
+// Calls Init Func of Plugin with the given Index
+//--------------
+Function TPluginLoader.CallInit(Index: Cardinal): Integer;
+begin
+ Result := -2;
+ If(Index < Length(Plugins)) then
+ begin
+ If (@Plugins[Index].Procs.Init <> nil) AND (Plugins[Index].State = 1) then
+ begin
+ Try
+ Result := Plugins[Index].Procs.Init(@PluginInterface);
+ Except
+ Result := -3;
+ End;
+
+ If (Result = 0) then
+ begin
+ Plugins[Index].State := 2;
+ Plugins[Index].NeedsDeInit := True;
+ end
+ Else
+ begin
+ FreePlugin(Index);
+ Plugins[Index].State := 255;
+ Core.ReportError(Integer(PChar('Error calling Init Function from Plugin: ' + Plugins[Index].Info.Name)), Integer(PChar('TPluginLoader')));
+ end;
+ end;
+ end;
+end;
+
+//--------------
+// Calls DeInit Proc of Plugin with the given Index
+//--------------
+Procedure TPluginLoader.CallDeInit(Index: Cardinal);
+begin
+ If(Index < Length(Plugins)) then
+ begin
+ If (Plugins[Index].State < 4) then
+ begin
+ If (@Plugins[Index].Procs.DeInit <> nil) and (Plugins[Index].NeedsDeInit) then
+ Try
+ Plugins[Index].Procs.DeInit(@PluginInterface);
+ Except
+
+ End;
+
+ //Don't forget to remove Services and Subscriptions by this Plugin
+ Core.Hooks.DelbyOwner(-1 - Index);
+
+ FreePlugin(Index);
+ end;
+ end;
+end;
+
+//--------------
+// Frees all Plugin Sources (Procs and Handles) - Helper for Deiniting Functions
+//--------------
+Procedure TPluginLoader.FreePlugin(Index: Cardinal);
+begin
+ Plugins[Index].State := 4;
+ Plugins[Index].Procs.Load := nil;
+ Plugins[Index].Procs.Init := nil;
+ Plugins[Index].Procs.DeInit := nil;
+
+ If (Plugins[Index].hLib <> 0) then
+ FreeLibrary(Plugins[Index].hLib);
+end;
+
+
+
+//--------------
+// wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+//--------------
+Function TPluginLoader.LoadPlugin(wParam, lParam: DWord): integer;
+var
+ Index: Integer;
+ sFile: String;
+begin
+ Result := -1;
+ sFile := '';
+ //lParam is ID
+ If (Ptr(wParam) = nil) then
+ begin
+ Index := lParam;
+ end
+ else
+ begin //wParam is PChar
+ try
+ sFile := String(PChar(Ptr(wParam)));
+ Index := PluginExists(sFile);
+ If (Index < 0) And FileExists(sFile) then
+ begin //Is Filename
+ AddPlugin(sFile);
+ Result := Plugins[High(Plugins)].State;
+ end;
+ except
+ Index := -2;
+ end;
+ end;
+
+
+ If (Index >= 0) and (Index < Length(Plugins)) then
+ begin
+ AddPlugin(Plugins[Index].Path);
+ Result := Plugins[Index].State;
+ end;
+end;
+
+//--------------
+// wParam PChar(PluginName/PluginPath) | lParam (if wParam = nil) ID of the Plugin
+//--------------
+Function TPluginLoader.UnloadPlugin(wParam, lParam: DWord): integer;
+var
+ Index: Integer;
+ sName: String;
+begin
+ Result := -1;
+ //lParam is ID
+ If (Ptr(wParam) = nil) then
+ begin
+ Index := lParam;
+ end
+ else
+ begin //wParam is PChar
+ try
+ sName := String(PChar(Ptr(wParam)));
+ Index := PluginExists(sName);
+ except
+ Index := -2;
+ end;
+ end;
+
+
+ If (Index >= 0) and (Index < Length(Plugins)) then
+ CallDeInit(Index)
+end;
+
+//--------------
+// If wParam = -1 then (If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TUS_PluginInfo to address at lparam) Else (Get PluginInfo of Plugin with Index(wParam) to Address at lParam)
+//--------------
+Function TPluginLoader.GetPluginInfo(wParam, lParam: DWord): integer;
+var I: Integer;
+begin
+ Result := 0;
+ If (wParam < 0) then
+ begin //Get Info of 1 Plugin
+ If (Ptr(lParam) <> nil) AND (wParam < Length(Plugins)) then
+ begin
+ Try
+ Result := 1;
+ PUS_PluginInfo(Ptr(lParam))^ := Plugins[wParam].Info;
+ Except
+
+ End;
+ end;
+ end
+ Else If (Ptr(lParam) = nil) then
+ begin //Get Length of Plugin (Info) Array
+ Result := Length(Plugins);
+ end
+ Else //Write PluginInfo Array to Address in lParam
+ begin
+ Try
+ For I := 0 to high(Plugins) do
+ PAUS_PluginInfo(Ptr(lParam))^[I] := Plugins[I].Info;
+ Result := Length(Plugins);
+ Except
+ Core.ReportError(Integer(PChar('Could not write PluginInfo Array')), Integer(PChar('TPluginLoader')));
+ End;
+ end;
+
+end;
+
+//--------------
+// If wParam = -1 then (If lParam = nil then get length of Plugin State Array. If lparam <> nil then write array of Byte to address at lparam) Else (Return State of Plugin with Index(wParam))
+//--------------
+Function TPluginLoader.GetPluginState(wParam, lParam: DWord): integer;
+var I: Integer;
+begin
+ Result := -1;
+ If (wParam < 0) then
+ begin //Get State of 1 Plugin
+ If (wParam < Length(Plugins)) then
+ begin
+ Result := Plugins[wParam].State;
+ end;
+ end
+ Else If (Ptr(lParam) = nil) then
+ begin //Get Length of Plugin (Info) Array
+ Result := Length(Plugins);
+ end
+ Else //Write PluginInfo Array to Address in lParam
+ begin
+ Try
+ For I := 0 to high(Plugins) do
+ Byte(Ptr(lParam + I)^) := Plugins[I].State;
+ Result := Length(Plugins);
+ Except
+ Core.ReportError(Integer(PChar('Could not write PluginState Array')), Integer(PChar('TPluginLoader')));
+ End;
+ end;
+end;
+
+
+
+
+
+{*********************
+ TtehPlugins
+ Implentation
+*********************}
+
+//-------------
+// Function that gives some Infos about the Module to the Core
+//-------------
+Procedure TtehPlugins.Info(const pInfo: PModuleInfo);
+begin
+ pInfo^.Name := 'TtehPlugins';
+ pInfo^.Version := MakeVersion(1,0,0,chr(0));
+ pInfo^.Description := 'Module executing the Plugins!';
+end;
+
+//-------------
+// Just the Constructor
+//-------------
+Constructor TtehPlugins.Create;
+begin
+ PluginLoader := nil;
+end;
+
+//-------------
+//Is Called on Loading.
+//In this Method only Events and Services should be created
+//to offer them to other Modules or Plugins during the Init process
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TtehPlugins.Load: Boolean;
+var
+ I: Integer; //Counter
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+label Continue;
+begin
+ //Get Pointer to PluginLoader
+ PluginLoader := PPluginLoader(Core.GetModulebyName('TPluginLoader'));
+ If (PluginLoader = nil) then
+ begin
+ Result := False;
+ Core.ReportError(Integer(PChar('Could not get Pointer to PluginLoader')), Integer(PChar('TtehPlugins')));
+ end
+ else
+ begin
+ Result := True;
+
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ //Start Loading the Plugins
+ I := 0;
+ Continue:
+ Try
+ While (I <= High(PluginLoader.Plugins)) do
+ begin
+ Core.CurExecuted := -1 - I;
+
+ //Unload Plugin if not correctly Executed
+ If (PluginLoader.CallLoad(I) <> 0) then
+ begin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 254; //Plugin asks for unload
+ Core.ReportDebug(Integer(PChar('Plugin Selfabort during loading process: ' + PluginLoader.Plugins[I].Info.Name)), Integer(PChar('TtehPlugins')));
+ end
+ else
+ Core.ReportDebug(Integer(PChar('Plugin loaded succesful: ' + PluginLoader.Plugins[I].Info.Name)), Integer(PChar('TtehPlugins')));
+
+ Inc(I);
+ end;
+ Except
+ //Plugin could not be loaded.
+ // => Show Error Message, then ShutDown Plugin
+ on E: Exception do
+ begin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 255; //Plugin causes Error
+ Core.ReportError(Integer(PChar('Plugin causes Error during loading process: ' + PluginLoader.Plugins[I].Info.Name + ', ErrorMsg: "' + E.Message + '"')), Integer(PChar('TtehPlugins')));
+
+
+ //don't forget to increase I
+ Inc(I);
+ end;
+ End;
+
+ If (I <= High(PluginLoader.Plugins)) then
+ Goto Continue;
+
+ //Reset CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+ end;
+end;
+
+//-------------
+//Is Called on Init Process
+//In this Method you can Hook some Events and Create + Init
+//your Classes, Variables etc.
+//If False is Returned this will cause a Forced Exit
+//-------------
+Function TtehPlugins.Init: Boolean;
+var
+ I: Integer; //Counter
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+label Continue;
+begin
+ Result := True;
+
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ //Start Loading the Plugins
+ I := 0;
+ Continue:
+ Try
+ While (I <= High(PluginLoader.Plugins)) do
+ begin
+ Core.CurExecuted := -1 - I;
+
+ //Unload Plugin if not correctly Executed
+ If (PluginLoader.CallInit(I) <> 0) then
+ begin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 254; //Plugin asks for unload
+ Core.ReportDebug(Integer(PChar('Plugin Selfabort during init process: ' + PluginLoader.Plugins[I].Info.Name)), Integer(PChar('TtehPlugins')));
+ end
+ else
+ Core.ReportDebug(Integer(PChar('Plugin inited succesful: ' + PluginLoader.Plugins[I].Info.Name)), Integer(PChar('TtehPlugins')));
+
+ //don't forget to increase I
+ Inc(I);
+ end;
+ Except
+ //Plugin could not be loaded.
+ // => Show Error Message, then ShutDown Plugin
+ PluginLoader.CallDeInit(I);
+ PluginLoader.Plugins[I].State := 255; //Plugin causes Error
+ Core.ReportError(Integer(PChar('Plugin causes Error during init process: ' + PluginLoader.Plugins[I].Info.Name)), Integer(PChar('TtehPlugins')));
+
+ //don't forget to increase I
+ Inc(I);
+ End;
+
+ If (I <= High(PluginLoader.Plugins)) then
+ GoTo Continue;
+
+ //Reset CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+end;
+
+//-------------
+//Is Called if this Module has been Inited and there is a Exit.
+//Deinit is in backwards Initing Order
+//-------------
+Procedure TtehPlugins.DeInit;
+var
+ I: Integer; //Counter
+ CurExecutedBackup: Integer; //backup of Core.CurExecuted Attribute
+label Continue;
+begin
+ //Backup CurExecuted
+ CurExecutedBackup := Core.CurExecuted;
+
+ //Start Loop
+ I := 0;
+
+ Continue:
+ Try
+ While (I <= High(PluginLoader.Plugins)) do
+ begin
+ //DeInit Plugin
+ PluginLoader.CallDeInit(I);
+
+ Inc(I);
+ end;
+ Except
+ Inc(I);
+ End;
+
+ If I <= High(PluginLoader.Plugins) then
+ Goto Continue;
+
+ //Reset CurExecuted
+ Core.CurExecuted := CurExecutedBackup;
+end;
end.
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