(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2014 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *)

{$INCLUDE "options.inc"}

unit uChat;

interface

procedure initModule;

procedure freeModule;

procedure ReloadLines;

procedure CleanupInput;

procedure AddChatString(s: shortstring);

procedure DrawChat;

procedure KeyPressChat(Key, Sym: Longword);

procedure SendHogSpeech(s: shortstring);

implementation

uses SDLh, uInputHandler, uTypes, uVariables, uCommands, uUtils, uTextures, uRender, uIO, uScript;

const MaxStrIndex = 27;

type TChatLine = record

    Tex: PTexture;

    Time: Longword;

    Width: LongInt;

    s: shortstring;

    Color: TSDL_Color;

    end;

    TChatCmd = (ccQuit, ccPause, ccFinish, ccShowHistory, ccFullScreen);

var Strs: array[0 .. MaxStrIndex] of TChatLine;

    MStrs: array[0 .. MaxStrIndex] of shortstring;

    LocalStrs: array[0 .. MaxStrIndex] of shortstring;

    missedCount: LongWord;

    lastStr: LongWord;

    localLastStr: LongInt;

    history: LongInt;

    visibleCount: LongWord;

    InputStr: TChatLine;

    InputStrL: array[0..260] of char; // for full str + 4-byte utf-8 char

    ChatReady: boolean;

    showAll: boolean;

    liveLua: boolean;

const

    colors: array[#0..#6] of TSDL_Color = (

            (r:$FF; g:$FF; b:$FF; a:$FF), // unused, feel free to take it for anything

            (r:$FF; g:$FF; b:$FF; a:$FF), // chat message [White]

            (r:$FF; g:$00; b:$FF; a:$FF), // action message [Purple]

            (r:$90; g:$FF; b:$90; a:$FF), // join/leave message [Lime]

            (r:$FF; g:$FF; b:$A0; a:$FF), // team message [Light Yellow]

            (r:$FF; g:$00; b:$00; a:$FF), // error messages [Red]

            (r:$00; g:$FF; b:$FF; a:$FF)  // input line [Light Blue]

            );

    ChatCommandz: array [TChatCmd] of record

            ChatCmd: string[31];

            ProcedureCallChatCmd: string[31];

            end = (

            (ChatCmd: '/quit'; ProcedureCallChatCmd: 'halt'),

            (ChatCmd: '/pause'; ProcedureCallChatCmd: 'pause'),

            (ChatCmd: '/finish'; ProcedureCallChatCmd: 'finish'),

            (ChatCmd: '/history'; ProcedureCallChatCmd: 'history'),

            (ChatCmd: '/fullscreen'; ProcedureCallChatCmd: 'fullscr')

            );

const Padding  = 2;

      ClHeight = 2 * Padding + 16; // font height

procedure RenderChatLineTex(var cl: TChatLine; var str: shortstring);

var strSurface,

    resSurface: PSDL_Surface;

    dstrect   : TSDL_Rect; // destination rectangle for blitting

    font      : THWFont;

const

    //shadowcolor: TSDL_Color = (r:$00; g:$00; b:$00; a:$80);

    shadowint  = $80 shl AShift;

begin

font:= CheckCJKFont(ansistring(str), fnt16);

// get render size of text

TTF_SizeUTF8(Fontz[font].Handle, Str2PChar(str), @cl.Width, nil);

// calculate and save size

cl.Width := cl.Width  + 2 * Padding;

// create surface to draw on

resSurface:= SDL_CreateRGBSurface(

                0, toPowerOf2(cl.Width), toPowerOf2(ClHeight),

                32, RMask, GMask, BMask, AMask);

// define area we want to draw in

dstrect.x:= 0;

dstrect.y:= 0;

dstrect.w:= cl.Width;

dstrect.h:= ClHeight;

// draw background

SDL_FillRect(resSurface, @dstrect, shadowint);

dstrect.x:= Padding + 1;

dstrect.y:= Padding + 1;

// doesn't matter if .w and .h still include padding, SDL_UpperBlit will clip

// create and blit text shadow

SDL_UpperBlit(strSurface, nil, resSurface, @dstrect);

SDL_FreeSurface(strSurface);

// non-shadow text starts at padding

dstrect.x:= Padding;

dstrect.y:= Padding;

// create and blit text

strSurface:= TTF_RenderUTF8_Blended(Fontz[font].Handle, Str2PChar(str), cl.color);

SDL_UpperBlit(strSurface, nil, resSurface, @dstrect);

SDL_FreeSurface(strSurface);

cl.Tex:= Surface2Tex(resSurface, false);

SDL_FreeSurface(resSurface)

end;

const ClDisplayDuration = 12500;

procedure SetLine(var cl: TChatLine; str: shortstring; isInput: boolean);

var color  : TSDL_Color;

begin

if cl.Tex <> nil then

    FreeTexture(cl.Tex);

if isInput then

    begin

    cl.s:= str;

    color:= colors[#6];

    str:= UserNick + '> ' + str + '_'

    end

else

    begin

    color:= colors[str[1]];

    delete(str, 1, 1);

    cl.s:= str;

    end;

cl.color:= color;

// set texture, note: variables cl.s and str will be different here if isInput

RenderChatLineTex(cl, str);

cl.Time:= RealTicks + ClDisplayDuration;

end;

// For uStore texture recreation

procedure ReloadLines;

var i, t: LongWord;

begin

    if InputStr.s <> '' then

        SetLine(InputStr, InputStr.s, true);

    for i:= 0 to MaxStrIndex do

        if Strs[i].s <> '' then

            begin

            t:= Strs[i].Time;

            SetLine(Strs[i], Strs[i].s, false);

            Strs[i].Time:= t

            end;

end;

procedure AddChatString(s: shortstring);

begin

if not ChatReady then

    begin

    if MissedCount < MaxStrIndex - 1 then

        MStrs[MissedCount]:= s

    else if MissedCount < MaxStrIndex then

        MStrs[MissedCount]:= #5 + '[...]';

    inc(MissedCount);

    exit

    end;

lastStr:= (lastStr + 1) mod (MaxStrIndex + 1);

SetLine(Strs[lastStr], s, false);

inc(visibleCount)

end;

procedure DrawChat;

var i, t, left, top, cnt: Longword;

begin

ChatReady:= true; // maybe move to somewhere else?

left:= 4 - cScreenWidth div 2;

top := 10;

if (GameState = gsChat) and (InputStr.Tex <> nil) then

    begin

    // draw under all other lines

    DrawTexture(left, top + visibleCount * ClHeight, InputStr.Tex);

    end;

if UIDisplay <> uiNone then

    begin

    if MissedCount <> 0 then // there are chat strings we missed, so print them now

        begin

        for i:= 0 to MissedCount - 1 do

            AddChatString(MStrs[i]);

        MissedCount:= 0;

        end;

    i:= lastStr;

    cnt:= 0; // count of lines displayed

    t  := 1; // # of current line processed

    // draw lines in reverse order

    while (((t < 7) and (Strs[i].Time > RealTicks)) or ((t < MaxStrIndex) and showAll))

    and (Strs[i].Tex <> nil) do

        begin

        // draw lines 4px away from left screen border and 2px away from top

        DrawTexture(left, top + (visibleCount - t) * ClHeight, Strs[i].Tex);

        if i = 0 then

            i:= MaxStrIndex

        else

            dec(i);

        inc(cnt);

        inc(t)

        end;

    visibleCount:= cnt;

    end;

end;

procedure SendHogSpeech(s: shortstring);

begin

SendIPC('h' + s);

ParseCommand('/hogsay '+s, true)

end;

procedure SendConsoleCommand(s: shortstring);

begin

    Delete(s, 1, 1);

    SendIPC('~' + s)

end;

procedure AcceptChatString(s: shortstring);

var i: TWave;

    j: TChatCmd;

    c, t: LongInt;

    x: byte;

begin

t:= LocalTeam;

x:= 0;

if (s[1] = '"') and (s[Length(s)] = '"')

    then x:= 1

else if (s[1] = '''') and (s[Length(s)] = '''') then

    x:= 2

else if (s[1] = '-') and (s[Length(s)] = '-') then

    x:= 3;

if (not CurrentTeam^.ExtDriven) and (x <> 0) then

    for c:= 0 to Pred(TeamsCount) do

        if (TeamsArray[c] = CurrentTeam) then

            t:= c;

if x <> 0 then

    begin

    if t = -1 then

        ParseCommand('/say ' + copy(s, 2, Length(s)-2), true)

    else

        SendHogSpeech(char(x) + char(t) + copy(s, 2, Length(s)-2));

    exit

    end;

if (s[1] = '/') then

    begin

    // put in input history

    localLastStr:= (localLastStr + 1) mod MaxStrIndex;

    LocalStrs[localLastStr]:= s;

    // These 3 are same as above, only are to make the hedgehog say it on next attack

    if (copy(s, 2, 4) = 'hsa ') then

        begin

        if CurrentTeam^.ExtDriven then

            ParseCommand('/say ' + copy(s, 6, Length(s)-5), true)

        else

            SendHogSpeech(#4 + copy(s, 6, Length(s)-5));

        exit

        end;

    if (copy(s, 2, 4) = 'hta ') then

        begin

        if CurrentTeam^.ExtDriven then

            ParseCommand('/say ' + copy(s, 6, Length(s)-5), true)

        else

            SendHogSpeech(#5 + copy(s, 6, Length(s)-5));

        exit

        end;

    if (copy(s, 2, 4) = 'hya ') then

        begin

        if CurrentTeam^.ExtDriven then

            ParseCommand('/say ' + copy(s, 6, Length(s)-5), true)

        else

            SendHogSpeech(#6 + copy(s, 6, Length(s)-5));

        exit

        end;

    if (copy(s, 2, 5) = 'team ') and (length(s) > 6) then

        begin

        ParseCommand(s, true);

        exit

        end;

    if (copy(s, 2, 3) = 'me ') then

        begin

        ParseCommand('/say ' + s, true);

        exit

        end;

    // debugging commands

    if (copy(s, 2, 7) = 'debugvl') then

        begin

        cViewLimitsDebug:= (not cViewLimitsDebug);

        UpdateViewLimits();

        exit

        end;

    if (copy(s, 2, 3) = 'lua') then

        begin

        AddFileLog('/lua issued');

        if gameType <> gmtNet then

            begin

            liveLua:= (not liveLua);

            if liveLua then

                begin

                AddFileLog('[Lua] chat input string parsing enabled');

                AddChatString(#3 + 'Lua parsing: ON');

                end

            else

                begin

                AddFileLog('[Lua] chat input string parsing disabled');

                AddChatString(#3 + 'Lua parsing: OFF');

                end;

            end;

        exit

        end;

    // hedghog animations/taunts and engine commands

    if (not CurrentTeam^.ExtDriven) and (CurrentTeam^.Hedgehogs[0].BotLevel = 0) then

        begin

        for i:= Low(TWave) to High(TWave) do

            if (s = Wavez[i].cmd) then

                begin

                ParseCommand('/taunt ' + char(i), true);

                exit

                end;

        for j:= Low(TChatCmd) to High(TChatCmd) do

            if (s = ChatCommandz[j].ChatCmd) then

                begin

                ParseCommand(ChatCommandz[j].ProcedureCallChatCmd, true);

                exit

                end;

        end;

    if (gameType = gmtNet) then

        SendConsoleCommand(s)

    end

else

    begin

    if liveLua then

        LuaParseString(s)

    else

        ParseCommand('/say ' + s, true);

    end;

end;

procedure CleanupInput;

begin

    FreezeEnterKey;

    history:= 0;

{$IFNDEF SDL2}

    SDL_EnableKeyRepeat(0,0);

{$ENDIF}

    GameState:= gsGame;

    ResetKbd;

end;

procedure KeyPressChat(Key, Sym: Longword);

const firstByteMark: array[0..3] of byte = (0, $C0, $E0, $F0);

var i, btw, index: integer;

    utf8: shortstring;

    action: boolean;

begin

    action:= true;

    case Sym of

        SDLK_BACKSPACE:

            begin

            if Length(InputStr.s) > 0 then

                begin

                InputStr.s[0]:= InputStrL[byte(InputStr.s[0])];

                SetLine(InputStr, InputStr.s, true)

                end

            end;

        SDLK_ESCAPE:

            begin

            if Length(InputStr.s) > 0 then

                SetLine(InputStr, '', true)

            else CleanupInput

            end;

        SDLK_RETURN, SDLK_KP_ENTER:

            begin

            if Length(InputStr.s) > 0 then

                begin

                AcceptChatString(InputStr.s);

                SetLine(InputStr, '', false)

                end;

            CleanupInput

            end;

        SDLK_UP, SDLK_DOWN:

            begin

            if (Sym = SDLK_UP) and (history < localLastStr) then inc(history);

            if (Sym = SDLK_DOWN) and (history > 0) then dec(history);

            index:= localLastStr - history + 1;

            if (index > localLastStr) then

                 SetLine(InputStr, '', true)

            else SetLine(InputStr, LocalStrs[index], true)

            end;

        SDLK_RIGHT, SDLK_LEFT, SDLK_DELETE,

        SDLK_HOME, SDLK_END,

        SDLK_PAGEUP, SDLK_PAGEDOWN:

            begin

            // ignore me!!!

            end;

        else

            action:= false;

        end;

    if not action and (Key <> 0) then

        begin

        if (Key < $80) then

            btw:= 1

        else if (Key < $800) then

            btw:= 2

        else if (Key < $10000) then

            btw:= 3

        else

            btw:= 4;

        utf8:= '';

        for i:= btw downto 2 do

            begin

            utf8:= char((Key or $80) and $BF) + utf8;

            Key:= Key shr 6

            end;

        utf8:= char(Key or firstByteMark[Pred(btw)]) + utf8;

        if byte(InputStr.s[0]) + btw > 240 then

            exit;

        InputStrL[byte(InputStr.s[0]) + btw]:= InputStr.s[0];

        SetLine(InputStr, InputStr.s + utf8, true)