(*

* Hedgewars, a free turn based strategy game

* Copyright (c) 2004-2011 Andrey Korotaev <unC0Rr@gmail.com>

*

* This program 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; version 2 of the 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.

*

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

*)

{$INCLUDE "options.inc"}

{$IFDEF WIN32}

{$R hwengine.rc}

{$ENDIF}

{$IFDEF HWLIBRARY}

unit hwengine;

interface

{$ELSE}

program hwengine;

{$ENDIF}

uses SDLh, uMisc, uConsole, uGame, uConsts, uLand, uAmmos, uVisualGears, uGears, uStore, uWorld, uKeys, uSound,

     uScript, uTeams, uStats, uIO, uLocale, uChat, uAI, uAIMisc, uRandom, uLandTexture, uCollisions,

     sysutils, uTypes, uVariables, uCommands, uUtils, uCaptions, uDebug, uCommandHandlers, uLandPainted;

{$IFDEF HWLIBRARY}

procedure initEverything(complete:boolean);

procedure freeEverything(complete:boolean);

procedure Game(gameArgs: PPChar); cdecl; export;

implementation

{$ELSE}

procedure OnDestroy; forward;

procedure initEverything(complete:boolean); forward;

procedure freeEverything(complete:boolean); forward;

{$ENDIF}

////////////////////////////////

procedure DoTimer(Lag: LongInt);

var s: shortstring;

begin

    if isPaused = false then

        inc(RealTicks, Lag);

    case GameState of

        gsLandGen: begin

                GenMap;

                ParseCommand('sendlanddigest', true);

                GameState:= gsStart;

                end;

        gsStart: begin

                if HasBorder then DisableSomeWeapons;

                AddClouds;

                AddFlakes;

                AssignHHCoords;

                AddMiscGears;

                StoreLoad;

                InitWorld;

                ResetKbd;

                SoundLoad;

                if GameType = gmtSave then

                    begin

                    isSEBackup:= isSoundEnabled;

                    isSoundEnabled:= false

                    end;

                FinishProgress;

                PlayMusic;

                SetScale(zoom);

                ScriptCall('onGameStart');

                GameState:= gsGame;

                end;

        gsConfirm,

        gsGame: begin

                DrawWorld(Lag); // never place between ProcessKbd and DoGameTick - bugs due to /put cmd and isCursorVisible

                ProcessKbd;

                if not isPaused then

                    begin

                    DoGameTick(Lag);

                    ProcessVisualGears(Lag);

                    end;

                end;

        gsChat: begin

                DrawWorld(Lag);

                if not isPaused then

                    begin

                    DoGameTick(Lag);

                    ProcessVisualGears(Lag);

                    end;

                end;

        gsExit: begin

                isTerminated:= true;

                end;

        end;

{$IFDEF SDL13}

    SDL_GL_SwapWindow(SDLwindow);

{$ELSE}

    SDL_GL_SwapBuffers();

{$ENDIF}

    if flagMakeCapture then

    begin

        flagMakeCapture:= false;

        {$IFNDEF IPHONEOS}

        s:= 'hw_' + FormatDateTime('YYYY-MM-DD_HH-mm-ss', Now()) + inttostr(GameTicks);

        playSound(sndShutter);

        if not MakeScreenshot(s) then

        begin

            WriteLnToConsole('Screenshot failed.');

            AddChatString(#5 + 'screen capture failed (lack of memory or write permissions)');

        end

        else

            WriteLnToConsole('Screenshot saved: ' + s);

        {$ENDIF}

    end;

end;

////////////////////

procedure OnDestroy;

begin

    WriteLnToConsole('Freeing resources...');

    FreeActionsList();

    StoreRelease();

    ControllerClose();

    CloseIPC();

    TTF_Quit();

{$IFDEF SDL13}

    SDL_GL_DeleteContext(SDLGLcontext);

    SDL_DestroyWindow(SDLwindow);

    SDLGLcontext:= nil;

    SDLwindow:= nil;

{$ENDIF}

    SDL_Quit();

    isTerminated:= false;

end;

///////////////////

procedure MainLoop;

{$WARNINGS OFF}

// disable "Some fields weren't initialized" warning

const event: TSDL_Event = ();

{$WARNINGS ON}

var PrevTime, CurrTime: Longword;

    prevFocusState: boolean;

begin

    PrevTime:= SDL_GetTicks;

    while isTerminated = false do

    begin

        SDL_PumpEvents();

        {$IFDEF SDL13}

        while SDL_PeepEvents(@event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT) > 0 do

        {$ELSE}

        while SDL_PeepEvents(@event, 1, SDL_GETEVENT, SDL_ALLEVENTS) > 0 do

        {$ENDIF}

        begin

            case event.type_ of

                SDL_KEYDOWN: if GameState = gsChat then

{$IFDEF SDL13}

                    // sdl on iphone supports only ashii keyboards and the unicode field is deprecated in sdl 1.3

                    KeyPressChat(event.key.keysym.sym);

                SDL_WINDOWEVENT:

                    if event.window.event = SDL_WINDOWEVENT_SHOWN then

                        begin

                        cHasFocus:= true;

                        onFocusStateChanged()

                        end;

{$ELSE}

                    KeyPressChat(event.key.keysym.unicode);

                SDL_MOUSEBUTTONDOWN: if event.button.button = SDL_BUTTON_WHEELDOWN then wheelDown:= true;

                SDL_MOUSEBUTTONUP: if event.button.button = SDL_BUTTON_WHEELUP then wheelUp:= true;

                SDL_ACTIVEEVENT:

                    if (event.active.state and SDL_APPINPUTFOCUS) <> 0 then

                        begin

                        prevFocusState:= cHasFocus;

                        cHasFocus:= event.active.gain = 1;

                        if prevFocusState xor cHasFocus then

                            onFocusStateChanged()

                        end;

                SDL_VIDEORESIZE: begin

                    // using lower values than cMinScreenWidth or cMinScreenHeight causes widget overlap and off-screen widget parts

                    // Change by sheepluva:

                    // Let's only use even numbers for custom width/height since I ran into scaling issues with odd width values.

                    // Maybe just fixes the symptom not the actual cause(?), I'm too tired to find out :P

                    cNewScreenWidth:= max(2 * (event.resize.w div 2), cMinScreenWidth);

                    cNewScreenHeight:= max(2 * (event.resize.h div 2), cMinScreenHeight);

                    cScreenResizeDelay:= RealTicks+500;

                    end;

{$ENDIF}

                SDL_JOYAXISMOTION: ControllerAxisEvent(event.jaxis.which, event.jaxis.axis, event.jaxis.value);

                SDL_JOYHATMOTION: ControllerHatEvent(event.jhat.which, event.jhat.hat, event.jhat.value);

                SDL_JOYBUTTONDOWN: ControllerButtonEvent(event.jbutton.which, event.jbutton.button, true);

                SDL_JOYBUTTONUP: ControllerButtonEvent(event.jbutton.which, event.jbutton.button, false);

                SDL_QUITEV: isTerminated:= true

            end; //end case event.type_ of

        end; //end while SDL_PollEvent(@event) <> 0 do

        if (cScreenResizeDelay <> 0) and (cScreenResizeDelay < RealTicks) and ((cNewScreenWidth <> cScreenWidth) or (cNewScreenHeight <> cScreenHeight)) then

            begin

            cScreenResizeDelay:= 0;

            cScreenWidth:= cNewScreenWidth;

            cScreenHeight:= cNewScreenHeight;

            ParseCommand('fullscr '+intToStr(LongInt(cFullScreen)), true);

            WriteLnToConsole('window resize: ' + IntToStr(cScreenWidth) + ' x ' + IntToStr(cScreenHeight));

            ScriptOnScreenResize();

            InitCameraBorders()

            end;

        if isTerminated = false then

        begin

            CurrTime:= SDL_GetTicks;

            if PrevTime + longword(cTimerInterval) <= CurrTime then

            begin

                DoTimer(CurrTime - PrevTime);

                PrevTime:= CurrTime

            end

            else SDL_Delay(1);

            IPCCheckSock();

        end;

    end;

end;

///////////////

{$IFDEF HWLIBRARY}

procedure Game(gameArgs: PPChar); cdecl; export;

{$ELSE}

procedure Game;

{$ENDIF}

var p: TPathType;

    s: shortstring;

    i: LongInt;

begin

{$IFDEF HWLIBRARY}

    cBits:= 32;

    cFullScreen:= false;

    cTimerInterval:= 8;

    PathPrefix:= 'Data';

    UserPathPrefix:= '.';

    cShowFPS:= {$IFDEF DEBUGFILE}true{$ELSE}false{$ENDIF};

    val(gameArgs[0], ipcPort);

    val(gameArgs[1], cScreenWidth);

    val(gameArgs[2], cScreenHeight);

    val(gameArgs[3], cReducedQuality);

    cLocaleFName:= gameArgs[4];

    if (Length(cLocaleFName) > 6) then cLocale := Copy(cLocaleFName,1,5)

    else cLocale := Copy(cLocaleFName,1,2);

    UserNick:= gameArgs[5];

    isSoundEnabled:= gameArgs[6] = '1';

    isMusicEnabled:= gameArgs[7] = '1';

    cAltDamage:= gameArgs[8] = '1';

    val(gameArgs[9], rotationQt);

    recordFileName:= gameArgs[10];

    cStereoMode:= smNone;

{$ENDIF}

    cMinScreenWidth:= min(cScreenWidth, cMinScreenWidth);

    cMinScreenHeight:= min(cScreenHeight, cMinScreenHeight);

    cOrigScreenWidth:= cScreenWidth;

    cOrigScreenHeight:= cScreenHeight;

    initEverything(true);

    WriteLnToConsole('Hedgewars ' + cVersionString + ' engine (network protocol: ' + inttostr(cNetProtoVersion) + ')');

    AddFileLog('Prefix: "' + PathPrefix +'"');

    AddFileLog('UserPrefix: "' + UserPathPrefix +'"');

    for i:= 0 to ParamCount do

        AddFileLog(inttostr(i) + ': ' + ParamStr(i));

    for p:= Succ(Low(TPathType)) to High(TPathType) do

        if (p <> ptMapCurrent) and (p <> ptData) then UserPathz[p]:= UserPathPrefix + '/Data/' + Pathz[p];

    UserPathz[ptData]:= UserPathPrefix + '/Data';

    for p:= Succ(Low(TPathType)) to High(TPathType) do

        if p <> ptMapCurrent then Pathz[p]:= PathPrefix + '/' + Pathz[p];

    WriteToConsole('Init SDL... ');

    SDLTry(SDL_Init(SDL_INIT_VIDEO or SDL_INIT_NOPARACHUTE) >= 0, true);

    WriteLnToConsole(msgOK);

    SDL_EnableUNICODE(1);

    SDL_ShowCursor(0);

    WriteToConsole('Init SDL_ttf... ');

    SDLTry(TTF_Init() <> -1, true);

    WriteLnToConsole(msgOK);

    // show main window

    if cFullScreen then ParseCommand('fullscr 1', true)

    else ParseCommand('fullscr 0', true);

    ControllerInit(); // has to happen before InitKbdKeyTable to map keys

    InitKbdKeyTable();

    AddProgress();

    LoadLocale(UserPathz[ptLocale] + '/en.txt');  // Do an initial load with english

    LoadLocale(Pathz[ptLocale] + '/en.txt');  // Do an initial load with english

    if cLocaleFName <> 'en.txt' then

        begin

        // Try two letter locale first before trying specific locale overrides

        if (Length(cLocale) > 2) and (Copy(cLocale,1,2) <> 'en') then

            begin

            LoadLocale(UserPathz[ptLocale] + '/' + Copy(cLocale,1,2)+'.txt');

            LoadLocale(Pathz[ptLocale] + '/' + Copy(cLocale,1,2)+'.txt')

            end;

        LoadLocale(UserPathz[ptLocale] + '/' + cLocaleFName);

        LoadLocale(Pathz[ptLocale] + '/' + cLocaleFName)

        end

    else cLocale := 'en';

    WriteLnToConsole(msgGettingConfig);

    if recordFileName = '' then

        begin

        InitIPC;

        SendIPCAndWaitReply('C');        // ask for game config

        end

    else

        LoadRecordFromFile(recordFileName);

    ScriptOnGameInit;

    s:= 'eproto ' + inttostr(cNetProtoVersion);

    SendIPCRaw(@s[0], Length(s) + 1); // send proto version

    InitTeams();

    AssignStores();

    if isSoundEnabled then

        InitSound();

    isDeveloperMode:= false;

    TryDo(InitStepsFlags = cifAllInited, 'Some parameters not set (flags = ' + inttostr(InitStepsFlags) + ')', true);

    ParseCommand('rotmask', true);

    MainLoop();

    // clean up SDL and GL context

    OnDestroy();

    // clean up all the other memory allocated

    freeEverything(true);

    if alsoShutdownFrontend then halt;

end;

procedure initEverything (complete:boolean);

begin

    Randomize();

    if complete then cLogfileBase:= 'game'

    else cLogfileBase:= 'preview';

    // uConsts does not need initialization as they are all consts

    uUtils.initModule;

    uMisc.initModule;

    uVariables.initModule;

    uConsole.initModule;    // MUST happen after uMisc

    uCommands.initModule;

    uCommandHandlers.initModule;

    uLand.initModule;

    uLandPainted.initModule;

    uIO.initModule;

    if complete then

    begin

        uAI.initModule;

        //uAIActions does not need initialization

        //uAIAmmoTests does not need initialization

        uAIMisc.initModule;

        uAmmos.initModule;

        uChat.initModule;

        uCollisions.initModule;

        //uFloat does not need initialization

        //uGame does not need initialization

        uGears.initModule;

        uKeys.initModule;

        //uLandGraphics does not need initialization

        //uLandObjects does not need initialization

        //uLandTemplates does not need initialization

        uLandTexture.initModule;

        //uLocale does not need initialization

        uRandom.initModule;

        uScript.initModule;

        uSound.initModule;

        uStats.initModule;

        uStore.initModule;

        uTeams.initModule;

        uVisualGears.initModule;

        uWorld.initModule;

        uCaptions.initModule;

    end;

end;

procedure freeEverything (complete:boolean);

begin

    if complete then

    begin

        uCaptions.freeModule;

        uWorld.freeModule;

        uVisualGears.freeModule;

        uTeams.freeModule;

        uStore.freeModule;          //stub

        uStats.freeModule;          //stub

        uSound.freeModule;

        uScript.freeModule;

        uRandom.freeModule;         //stub

        //uLocale does not need to be freed

        //uLandTemplates does not need to be freed

        uLandTexture.freeModule;

        //uLandObjects does not need to be freed

        //uLandGraphics does not need to be freed

        uKeys.freeModule;           //stub

        uGears.freeModule;

        //uGame does not need to be freed

        //uFloat does not need to be freed

        uCollisions.freeModule;     //stub

        uChat.freeModule;

        uAmmos.freeModule;

        uAIMisc.freeModule;         //stub

        //uAIAmmoTests does not need to be freed

        //uAIActions does not need to be freed

        uAI.freeModule;             //stub

    end;

    uIO.freeModule;             //stub

    uLand.freeModule;

    uLandPainted.freeModule;

    uCommandHandlers.freeModule;

    uCommands.freeModule;

    uConsole.freeModule;

    uVariables.freeModule;

    uUtils.freeModule;

    uMisc.freeModule;           // uMisc closes the debug log.

end;

/////////////////////////

procedure GenLandPreview{$IFDEF HWLIBRARY}(port: LongInt); cdecl; export{$ENDIF};

var Preview: TPreview;

begin

    initEverything(false);

{$IFDEF HWLIBRARY}

    WriteLnToConsole('Preview connecting on port ' + inttostr(port));

    ipcPort:= port;

{$ENDIF}

    InitIPC;

    IPCWaitPongEvent;

    TryDo(InitStepsFlags = cifRandomize, 'Some parameters not set (flags = ' + inttostr(InitStepsFlags) + ')', true);

    Preview:= GenPreview();

    WriteLnToConsole('Sending preview...');

    SendIPCRaw(@Preview, sizeof(Preview));

    SendIPCRaw(@MaxHedgehogs, sizeof(byte));

    WriteLnToConsole('Preview sent, disconnect');

    CloseIPC();

    freeEverything(false);

end;

{$IFNDEF HWLIBRARY}

/////////////////////

procedure DisplayUsage;

var i: LongInt;

begin

    WriteLn('Wrong argument format: correct configurations is');

    WriteLn();

    WriteLn('  hwengine <path to user hedgewars folder> <path to global data folder> <path to replay file> [options]');

    WriteLn();

    WriteLn('where [options] must be specified either as:');