(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2012 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, uInputHandler, uSound,

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

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

     {$IFDEF SDL13}, uTouch{$ENDIF}{$IFDEF ANDROID}, GLUnit{$ENDIF};

{$IFDEF HWLIBRARY}

procedure initEverything(complete:boolean);

procedure freeEverything(complete:boolean);

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

procedure GenLandPreview(port: Longint); 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

    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(false);

            InitWorld;

            ResetKbd;

            if GameType = gmtSave then

            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;

            DoGameTick(Lag);

            ProcessVisualGears(Lag);

            end;

        gsChat:

            begin

            DrawWorld(Lag);

            DoGameTick(Lag);

            ProcessVisualGears(Lag);

            end;

        gsExit:

            begin

            isTerminated:= true;

            end;

        gsSuspend:

            exit;

            end;

{$IFDEF SDL13}

    SDL_GL_SwapWindow(SDLwindow);

{$ELSE}

    SDL_GL_SwapBuffers();

{$ENDIF}

    if flagMakeCapture then

        begin

        flagMakeCapture:= false;

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

        playSound(sndShutter);

        if MakeScreenshot(s) then

            WriteLnToConsole('Screenshot saved: ' + s)

        else

            begin

            WriteLnToConsole('Screenshot failed.');

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

            end

        end;

end;

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

procedure OnDestroy;

begin

    WriteLnToConsole('Freeing resources...');

    FreeActionsList();

    StoreRelease(false);

    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;

var event: TSDL_Event;

    PrevTime, CurrTime: Longword;

{$IFDEF SDL13}

    previousGameState: TGameState;

{$ELSE}

    prevFocusState: boolean;

{$ENDIF}

begin

    PrevTime:= SDL_GetTicks;

    while isTerminated = false do

    begin

        SDL_PumpEvents();

        while SDL_PeepEvents(@event, 1, SDL_GETEVENT, {$IFDEF SDL13}SDL_FIRSTEVENT, SDL_LASTEVENT{$ELSE}SDL_ALLEVENTS{$ENDIF}) > 0 do

        begin

            case event.type_ of

{$IFDEF SDL13}

                SDL_KEYDOWN:

                if GameState = gsChat then

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

                    KeyPressChat(SDL_GetKeyFromScancode(event.key.keysym.sym))//TODO correct for keymodifiers

                else

                    ProcessKey(event.key);

                SDL_KEYUP:

                if GameState <> gsChat then

                    ProcessKey(event.key);

                SDL_WINDOWEVENT:

                    if event.window.event = SDL_WINDOWEVENT_SHOWN then

                        begin

                        cHasFocus:= true;

                        onFocusStateChanged()

                        end

                    else if event.window.event = SDL_WINDOWEVENT_MINIMIZED then

                        begin

                        previousGameState:= GameState;

                        GameState:= gsSuspend;

                        end

                    else if event.window.event = SDL_WINDOWEVENT_RESTORED then

                        begin

                        GameState:= previousGameState;

{$IFDEF ANDROID}

                        //This call is used to reinitialize the glcontext and reload the textures

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

{$ENDIF}

                        end

                    else if event.window.event = SDL_WINDOWEVENT_RESIZED then

                        begin

                        cNewScreenWidth:= max(2 * (event.window.data1 div 2), cMinScreenWidth);

                        cNewScreenHeight:= max(2 * (event.window.data2 div 2), cMinScreenHeight);

                        cScreenResizeDelay:= RealTicks + 500{$IFDEF IPHONEOS}div 2{$ENDIF};

                        end;

                SDL_FINGERMOTION:

                    onTouchMotion(event.tfinger.x, event.tfinger.y,event.tfinger.dx, event.tfinger.dy, event.tfinger.fingerId);

                SDL_FINGERDOWN:

                    onTouchDown(event.tfinger.x, event.tfinger.y, event.tfinger.fingerId);

                SDL_FINGERUP:

                    onTouchUp(event.tfinger.x, event.tfinger.y, event.tfinger.fingerId);

{$ELSE}

                SDL_KEYDOWN:

                    if GameState = gsChat then

                        KeyPressChat(event.key.keysym.unicode)

                    else

                        ProcessKey(event.key);

                SDL_KEYUP:

                if GameState <> gsChat then

                    ProcessKey(event.key);

                SDL_MOUSEBUTTONDOWN:

                    ProcessMouse(event.button, true); 

                SDL_MOUSEBUTTONUP:

                    ProcessMouse(event.button, false); 

                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();

        InitTouchInterface();

    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;

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

procedure Game{$IFDEF HWLIBRARY}(gameArgs: PPChar); cdecl; export{$ENDIF};

var

    p: TPathType;

    s: shortstring;

    i: LongInt;

begin

{$IFDEF HWLIBRARY}

    cBits:= 32;

    cTimerInterval:= 8;

    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];

    // cFullScreen functionality is platform dependent, ifdef it if you need to modify it

    cFullScreen:= false;

    if (Length(cLocaleFName) > 6) then

        cLocale := Copy(cLocaleFName,1,5)

    else

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

    UserNick:= gameArgs[5];

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

    PathPrefix:= gameArgs[9];

    UserPathPrefix:= '../Documents';

    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();

    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

{$IFDEF ANDROID}GLUnit.init;{$ENDIF}

{$IFDEF SDL13}uTouch.initModule;{$ENDIF}

        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;

        uInputHandler.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