aboutsummaryrefslogtreecommitdiffstats
path: root/Game/Code/Classes/UCore.pas
blob: 7f05289b8420b22e6778de1198b7599a9279bb50 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
unit UCore;

interface

{$IFDEF FPC}
  {$MODE Delphi}
{$ENDIF}

{$I switches.inc}

uses uPluginDefs,
     uCoreModule,
     UHooks,
     UServices,
     UModules;
{*********************
  TCore
  Class manages all CoreModules, teh StartUp, teh MainLoop and the shutdown process
  Also it does some Error Handling, and maybe sometime multithreaded Loading ;)
*********************}

type
  TModuleListItem = record
    Module:       TCoreModule; //Instance of the Modules Class
    Info:         TModuleInfo; //ModuleInfo returned by Modules Modulinfo Proc
    NeedsDeInit:  Boolean;     //True if Module was succesful inited
  end;
  
  TCore = class
    private
      //Some Hook Handles. See Plugin SDKs Hooks.txt for Infos
      hLoadingFinished: THandle;
      hMainLoop:        THandle;
      hTranslate:       THandle;
      hLoadTextures:    THandle;
      hExitQuery:       THandle;
      hExit:            THandle;
      hDebug:           THandle;
      hError:           THandle;
      sReportError:     THandle;
      sReportDebug:     THandle;
      sShowMessage:     THandle;
      sRetranslate:     THandle;
      sReloadTextures:  THandle;
      sGetModuleInfo:   THandle;
      sGetApplicationHandle: THandle;

      Modules:          Array [0..High(CORE_MODULES_TO_LOAD)] of TModuleListItem;

      //Cur + Last Executed Setting and Getting ;)
      iCurExecuted: Integer;
      iLastExecuted: Integer;

      Procedure SetCurExecuted(Value: Integer);

      //Function Get all Modules and Creates them
      Function GetModules: Boolean;

      //Loads Core and all Modules
      Function Load: Boolean;

      //Inits Core and all Modules
      Function Init: Boolean;

      //DeInits Core and all Modules
      Function DeInit: Boolean;

      //Load the Core
      Function LoadCore: Boolean;

      //Init the Core
      Function InitCore: Boolean;

      //DeInit the Core
      Function DeInitCore: Boolean;

      //Called one Time per Frame
      Function MainLoop: Boolean;

    public
      Hooks:            THookManager;   //Teh Hook Manager ;)
      Services:         TServiceManager;//The Service Manager

      Name:             String;         //Name of this Application
      Version:          LongWord;       //Version of this ". For Info Look PluginDefs Functions

      LastErrorReporter:String;         //Who Reported the Last Error String
      LastErrorString:  String;         //Last Error String reported

      property CurExecuted: Integer read iCurExecuted write SetCurExecuted;       //ID of Plugin or Module curently Executed
      property LastExecuted: Integer read iLastExecuted;

      //---------------
      //Main Methods to control the Core:
      //---------------
      Constructor Create(const cName: String; const cVersion: LongWord);

      //Starts Loading and Init Process. Then Runs MainLoop. DeInits on Shutdown
      Procedure Run;

      //Method for other Classes to get Pointer to a specific Module
      Function GetModulebyName(const Name: String): PCoreModule;

      //--------------
      // Hook and Service Procs:
      //--------------
      Function ShowMessage(wParam: TwParam; lParam: TlParam): integer; //Shows a Message (lParam: PChar Text, wParam: Symbol)
      Function ReportError(wParam: TwParam; lParam: TlParam): integer; //Shows a Message (wParam: Pchar(Message), lParam: PChar(Reportername))
      Function ReportDebug(wParam: TwParam; lParam: TlParam): integer; //Shows a Message (wParam: Pchar(Message), lParam: PChar(Reportername))
      Function Retranslate(wParam: TwParam; lParam: TlParam): integer; //Calls Translate hook
      Function ReloadTextures(wParam: TwParam; lParam: TlParam): integer; //Calls LoadTextures hook
      Function GetModuleInfo(wParam: TwParam; lParam: TlParam): integer; //If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TModuleInfo to address at lparam
      Function GetApplicationHandle(wParam: TwParam; lParam: TlParam): integer; //Returns Application Handle
  end;

var
  Core: TCore; 

implementation

uses {$IFDEF win32}
       Windows,
      {$ENDIF}
      SysUtils;

//-------------
// Create - Creates Class + Hook and Service Manager
//-------------
Constructor TCore.Create(const cName: String; const cVersion: LongWord);
begin
  Name := cName;
  Version := cVersion;
  iLastExecuted := 0;
  iCurExecuted := 0;

  LastErrorReporter := '';
  LastErrorString   := '';

  Hooks := THookManager.Create(50);
  Services := TServiceManager.Create;
end;

//-------------
//Starts Loading and Init Process. Then Runs MainLoop. DeInits on Shutdown
//-------------
Procedure TCore.Run;
var
  noError: Boolean;
begin
  //Get Modules
  Try
    noError := GetModules;
  Except
    noError := False;
  end;

  //Loading
  if (noError) then
  begin
    Try
      noError := Load;
    Except
      noError := False;
    end;

    if (noError) then
    begin //Init
      Try
        noError := Init;
      Except
        noError := False;
      end;

      If noError then
      begin
        //Call Translate Hook
        noError := (Hooks.CallEventChain(hTranslate, 0, nil) = 0);

        If noError then
        begin //Calls LoadTextures Hook
          noError := (Hooks.CallEventChain(hLoadTextures, 0, nil) = 0);

          if noError then
          begin //Calls Loading Finished Hook
            noError := (Hooks.CallEventChain(hLoadingFinished, 0, nil) = 0);

            If noError then
            begin
              //Start MainLoop
              While noError do
              begin
                noError := MainLoop;
                // to-do : Call Display Draw here
              end;
            end
            else
            begin
              If (LastErrorString <> '') then
                Self.ShowMessage(CORE_SM_ERROR, PChar('Error calling LoadingFinished Hook: ' + LastErrorString))
              else
                Self.ShowMessage(CORE_SM_ERROR, PChar('Error calling LoadingFinished Hook'));
            end;
          end
          else
          begin
            If (LastErrorString <> '') then
              Self.ShowMessage(CORE_SM_ERROR, PChar('Error loading textures: ' + LastErrorString))
            else
              Self.ShowMessage(CORE_SM_ERROR, PChar('Error loading textures'));
          end;
        end
        else
        begin
          If (LastErrorString <> '') then
            Self.ShowMessage(CORE_SM_ERROR, PChar('Error translating: ' + LastErrorString))
          else
            Self.ShowMessage(CORE_SM_ERROR, PChar('Error translating'));
        end;
        
      end
      else
      begin
        If (LastErrorString <> '') then
          Self.ShowMessage(CORE_SM_ERROR, PChar('Error initing Modules: ' + LastErrorString))
        else
          Self.ShowMessage(CORE_SM_ERROR, PChar('Error initing Modules'));
      end;
    end
    else
    begin
      If (LastErrorString <> '') then
        Self.ShowMessage(CORE_SM_ERROR, PChar('Error loading Modules: ' + LastErrorString))
      else
        Self.ShowMessage(CORE_SM_ERROR, PChar('Error loading Modules'));
    end;
  end
  else
  begin
    If (LastErrorString <> '') then
      Self.ShowMessage(CORE_SM_ERROR, PChar('Error Getting Modules: ' + LastErrorString))
    else
      Self.ShowMessage(CORE_SM_ERROR, PChar('Error Getting Modules'));
  end;

  //DeInit
  DeInit;
end;

//-------------
//Called one Time per Frame
//-------------
Function TCore.MainLoop: Boolean;
begin
  Result := False;

end;

//-------------
//Function Get all Modules and Creates them
//-------------
Function TCore.GetModules: Boolean;
var
  I: Integer;
begin
  Result := False;
  for I := 0 to high(Modules) do
  begin
    try
      Modules[I].NeedsDeInit := False;
      Modules[I].Module := CORE_MODULES_TO_LOAD[I].Create;
      Modules[I].Module.Info(@Modules[I].Info);
    except
      ReportError(Integer(PChar('Can''t get module #' + InttoStr(I) + ' "' + Modules[I].Info.Name + '"')), PChar('Core'));
      Exit;
    end;
  end;
  Result := True;
end;

//-------------
//Loads Core and all Modules
//-------------
Function TCore.Load: Boolean;
var
  I: Integer;
begin
  Result := LoadCore;

  I := 0;
  While ((Result = True) AND (I <= High(CORE_MODULES_TO_LOAD))) do
  begin
    try
      Result := Modules[I].Module.Load;
    except
      Result := False;
      ReportError(Integer(PChar('Error loading module #' + InttoStr(I) + ' "' + Modules[I].Info.Name + '"')), PChar('Core'));
    end;

    Inc(I);
  end;
end;

//-------------
//Inits Core and all Modules
//-------------
Function TCore.Init: Boolean;
var
  I: Integer;
begin
  Result := InitCore;

  I := 0;
  While ((Result = True) AND (I <= High(CORE_MODULES_TO_LOAD))) do
  begin
    try
      Result := Modules[I].Module.Init;
    except
      Result := False;
      ReportError(Integer(PChar('Error initing module #' + InttoStr(I) + ' "' + Modules[I].Info.Name + '"')), PChar('Core'));
    end;

    Modules[I].NeedsDeInit := Result;
    Inc(I);
  end;
end;

//-------------
//DeInits Core and all Modules
//-------------
Function TCore.DeInit: Boolean;
var
  I: Integer;
label Continue;
begin
  I := High(CORE_MODULES_TO_LOAD);

  Continue:
  Try
    While (I >= 0) do
    begin
      If (Modules[I].NeedsDeInit) then
        Modules[I].Module.DeInit;

      Dec(I);
    end;
  Except


  end;
  If (I >= 0) then
    GoTo Continue;

  DeInitCore;

  Result := true;
end;

//-------------
//Load the Core
//-------------
Function TCore.LoadCore: Boolean;
begin
  hLoadingFinished := Hooks.AddEvent('Core/LoadingFinished');
  hMainLoop        := Hooks.AddEvent('Core/MainLoop');
  hTranslate       := Hooks.AddEvent('Core/Translate');
  hLoadTextures    := Hooks.AddEvent('Core/LoadTextures');
  hExitQuery       := Hooks.AddEvent('Core/ExitQuery');
  hExit            := Hooks.AddEvent('Core/Exit');
  hDebug           := Hooks.AddEvent('Core/NewDebugInfo');
  hError           := Hooks.AddEvent('Core/NewError');
  
  sReportError     := Services.AddService('Core/ReportError', nil, Self.ReportError);
  sReportDebug     := Services.AddService('Core/ReportDebug', nil, Self.ReportDebug);
  sShowMessage     := Services.AddService('Core/ShowMessage', nil, Self.ShowMessage);
  sRetranslate     := Services.AddService('Core/Retranslate', nil, Self.Retranslate);
  sReloadTextures  := Services.AddService('Core/ReloadTextures', nil, Self.ReloadTextures);
  sGetModuleInfo   := Services.AddService('Core/GetModuleInfo', nil, Self.GetModuleInfo);
  sGetApplicationHandle := Services.AddService('Core/GetApplicationHandle', nil, Self.GetApplicationHandle);

  //A little Test
  Hooks.AddSubscriber('Core/NewError', HookTest);

  result := true;
end;

//-------------
//Init the Core
//-------------
Function TCore.InitCore: Boolean;
begin
  //Dont Init s.th. atm.
  result := true;
end;

//-------------
//DeInit the Core
//-------------
Function TCore.DeInitCore: Boolean;
begin


  // to-do : write TService-/HookManager.Free and call it here
  Result := true;
end;

//-------------
//Method for other Classes to get Pointer to a specific Module
//-------------
Function TCore.GetModulebyName(const Name: String): PCoreModule;
var I: Integer;
begin
  Result := nil;
  For I := 0 to high(Modules) do
    If (Modules[I].Info.Name = Name) then
    begin
      Result := @Modules[I].Module;
      Break;
    end;
end;

//-------------
// Shows a MessageDialog (lParam: PChar Text, wParam: Symbol)
//-------------
Function TCore.ShowMessage(wParam: TwParam; lParam: TlParam): integer;
var Params: Cardinal; 
begin
  Result := -1;

  {$IFDEF MSWINDOWS}
  If (lParam<>nil) then
  begin
    Params := MB_OK;
    Case wParam of
      CORE_SM_ERROR: Params := Params or MB_ICONERROR;
      CORE_SM_WARNING: Params := Params or MB_ICONWARNING;
      CORE_SM_INFO: Params := Params or MB_ICONINFORMATION;
    end;

    //Show:
    Result := Messagebox(0, lParam, PChar(Name), Params);
  end;
  {$ENDIF}

  // to-do : write ShowMessage for other OSes
end;

//-------------
// Calls NewError HookChain (wParam: Pchar(Message), lParam: PChar(Reportername))
//-------------
Function TCore.ReportError(wParam: TwParam; lParam: TlParam): integer;
begin
  //Update LastErrorReporter and LastErrorString
  LastErrorReporter := String(PChar(lParam));
  LastErrorString   := String(PChar(Pointer(wParam)));
  
  Hooks.CallEventChain(hError, wParam, lParam);
end;

//-------------
// Calls NewDebugInfo HookChain (wParam: Pchar(Message), lParam: PChar(Reportername))
//-------------
Function TCore.ReportDebug(wParam: TwParam; lParam: TlParam): integer;
begin
  Hooks.CallEventChain(hDebug, wParam, lParam);
end;

//-------------
// Calls Translate hook
//-------------
Function TCore.Retranslate(wParam: TwParam; lParam: TlParam): integer;
begin
  Hooks.CallEventChain(hTranslate, 1, nil);
end;

//-------------
// Calls LoadTextures hook
//-------------
Function TCore.ReloadTextures(wParam: TwParam; lParam: TlParam): integer;
begin
  Hooks.CallEventChain(hLoadTextures, 1, nil);
end;

//-------------
// If lParam = nil then get length of Moduleinfo Array. If lparam <> nil then write array of TModuleInfo to address at lparam
//-------------
Function TCore.GetModuleInfo(wParam: TwParam; lParam: TlParam): integer;
begin
  if (Pointer(lParam) = nil) then
  begin
    Result := Length(Modules);
  end
  else
  begin
    Try
      For Result := 0 to High(Modules) do
      begin
        AModuleInfo(Pointer(lParam))[Result].Name := Modules[Result].Info.Name;
        AModuleInfo(Pointer(lParam))[Result].Version := Modules[Result].Info.Version;
        AModuleInfo(Pointer(lParam))[Result].Description := Modules[Result].Info.Description;
      end;
    Except
      Result := -1;
    end;
  end;
end;

//-------------
// Returns Application Handle
//-------------
Function TCore.GetApplicationHandle(wParam: TwParam; lParam: TlParam): integer;
begin
  Result := hInstance;
end;

//-------------
// Called when setting CurExecuted
//-------------
Procedure TCore.SetCurExecuted(Value: Integer);
begin
  //Set Last Executed
  iLastExecuted := iCurExecuted;

  //Set Cur Executed
  iCurExecuted := Value;
end;

end.