(*
* Hedgewars, a free turn based strategy game
* Copyright (c) 2004-2010 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
*)

function CheckNoTeamOrHH: boolean;
var bRes: boolean;
begin
bRes:= (CurrentTeam = nil) or (CurrentHedgehog^.Gear = nil);
{$IFDEF DEBUGFILE}
if bRes then
if CurrentTeam = nil then AddFileLog('CONSOLE: CurTeam = nil')
                        else AddFileLog('CONSOLE: CurTeam <> nil, Gear = nil');
{$ENDIF}
CheckNoTeamOrHH:= bRes;
end;
////////////////////////////////////////////////////////////////////////////////
procedure chQuit(var s: shortstring);
const prevGState: TGameState = gsConfirm;
begin
s:= s; // avoid compiler hint
if GameState <> gsConfirm then
        begin
        prevGState:= GameState;
        GameState:= gsConfirm
        end else
        GameState:= prevGState
end;

procedure chConfirm(var s: shortstring);
begin
s:= s; // avoid compiler hint
if GameState = gsConfirm then
    begin
    SendIPC('Q');
    GameState:= gsExit
    end
else
    begin
    GameState:= gsChat;
    KeyPressChat(27);
    KeyPressChat(47);
    KeyPressChat(116);
    KeyPressChat(101);
    KeyPressChat(97);
    KeyPressChat(109);
    KeyPressChat(32)
    end
end;

procedure chCheckProto(var s: shortstring);
var i, c: LongInt;
begin
if isDeveloperMode then
begin
val(s, i, c);
if (c <> 0) or (i = 0) then exit;
TryDo(i <= cNetProtoVersion, 'Protocol version mismatch: engine is too old', true);
TryDo(i >= cNetProtoVersion, 'Protocol version mismatch: engine is too new', true)
end
end;

procedure chAddTeam(var s: shortstring);
var Color: Longword;
    ts, cs: shortstring;
begin
cs:= '';
ts:= '';
if isDeveloperMode then
begin
SplitBySpace(s, cs);
SplitBySpace(cs, ts);
val(cs, Color);
TryDo(Color <> 0, 'Error: black team color', true);

// color is always little endian so the mask must be constant also in big endian archs
Color:= Color or $FF000000;
    
AddTeam(Color);
CurrentTeam^.TeamName:= ts;
CurrentTeam^.PlayerHash:= s;
if GameType in [gmtDemo, gmtSave] then CurrentTeam^.ExtDriven:= true;

CurrentTeam^.voicepack:= AskForVoicepack('Default')
end
end;

procedure chTeamLocal(var s: shortstring);
begin
s:= s; // avoid compiler hint
if not isDeveloperMode then exit;
if CurrentTeam = nil then OutError(errmsgIncorrectUse + ' "/rdriven"', true);
CurrentTeam^.ExtDriven:= true
end;

procedure chGrave(var s: shortstring);
begin
if CurrentTeam = nil then OutError(errmsgIncorrectUse + ' "/grave"', true);
if s[1]='"' then Delete(s, 1, 1);
if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
CurrentTeam^.GraveName:= s
end;

procedure chFort(var s: shortstring);
begin
if CurrentTeam = nil then OutError(errmsgIncorrectUse + ' "/fort"', true);
if s[1]='"' then Delete(s, 1, 1);
if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
CurrentTeam^.FortName:= s
end;

procedure chVoicepack(var s: shortstring);
begin
if CurrentTeam = nil then OutError(errmsgIncorrectUse + ' "/voicepack"', true);
if s[1]='"' then Delete(s, 1, 1);
if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
CurrentTeam^.voicepack:= AskForVoicepack(s)
end;

procedure chFlag(var s: shortstring);
begin
if CurrentTeam = nil then OutError(errmsgIncorrectUse + ' "/flag"', true);
if s[1]='"' then Delete(s, 1, 1);
if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
CurrentTeam^.flag:= s
end;

procedure chScript(var s: shortstring);
begin
if s[1]='"' then Delete(s, 1, 1);
if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
ScriptLoad(s)
end;

procedure chAddHH(var id: shortstring);
var s: shortstring;
    Gear: PGear;
begin
s:= '';
if (not isDeveloperMode) or (CurrentTeam = nil) then exit;
with CurrentTeam^ do
    begin
    SplitBySpace(id, s);
    CurrentHedgehog:= @Hedgehogs[HedgehogsNumber];
    val(id, CurrentHedgehog^.BotLevel);
    Gear:= AddGear(0, 0, gtHedgehog, 0, _0, _0, 0);
    SplitBySpace(s, id);
    val(s, Gear^.Health);
    TryDo(Gear^.Health > 0, 'Invalid hedgehog health', true);
    Gear^.Hedgehog^.Team:= CurrentTeam;
    if (GameFlags and gfSharedAmmo) <> 0 then CurrentHedgehog^.AmmoStore:= Clan^.ClanIndex
    else if (GameFlags and gfPerHogAmmo) <> 0 then
        begin
        AddAmmoStore;
        CurrentHedgehog^.AmmoStore:= StoreCnt - 1
        end
    else CurrentHedgehog^.AmmoStore:= TeamsCount - 1;
    CurrentHedgehog^.Gear:= Gear;
    CurrentHedgehog^.Name:= id;
    CurrentHedgehog^.InitialHealth:= Gear^.Health;
    CurrHedgehog:= HedgehogsNumber;
    inc(HedgehogsNumber)
    end
end;

procedure chSetHat(var s: shortstring);
begin
if (not isDeveloperMode) or (CurrentTeam = nil) then exit;
with CurrentTeam^ do
    begin
    if not CurrentHedgehog^.King then
    if (s = '') or 
        (((GameFlags and gfKing) <> 0) and (s = 'crown')) or
        ((Length(s) > 39) and (Copy(s,1,8) = 'Reserved') and (Copy(s,9,32) <> PlayerHash)) then
        CurrentHedgehog^.Hat:= 'NoHat'
    else
        CurrentHedgehog^.Hat:= s
    end;
end;

procedure chSetHHCoords(var x: shortstring);
var y: shortstring;
    t: Longint;
begin
y:= '';
if (not isDeveloperMode) or (CurrentHedgehog = nil) or (CurrentHedgehog^.Gear = nil) then exit;
SplitBySpace(x, y);
val(x, t);
CurrentHedgehog^.Gear^.X:= int2hwFloat(t);
val(y, t);
CurrentHedgehog^.Gear^.Y:= int2hwFloat(t)
end;

procedure chSetAmmoLoadout(var descr: shortstring);
begin
SetAmmoLoadout(descr)
end;

procedure chSetAmmoDelay(var descr: shortstring);
begin
SetAmmoDelay(descr)
end;

procedure chSetAmmoProbability(var descr: shortstring);
begin
SetAmmoProbability(descr)
end;

procedure chSetAmmoReinforcement(var descr: shortstring);
begin
SetAmmoReinforcement(descr)
end;

procedure chAddAmmoStore(var descr: shortstring);
begin
descr:= ''; // avoid compiler hint
AddAmmoStore
end;

procedure chBind(var id: shortstring);
var s: shortstring;
    b: LongInt;
begin
s:= '';
if CurrentTeam = nil then exit;
SplitBySpace(id, s);
if s[1]='"' then Delete(s, 1, 1);
if s[byte(s[0])]='"' then Delete(s, byte(s[0]), 1);
b:= KeyNameToCode(id);
if b = 0 then OutError(errmsgUnknownVariable + ' "' + id + '"', false)
        else CurrentTeam^.Binds[b]:= s
end;

procedure chCurU_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementY:= -1;
end;

procedure chCurU_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementY:= 0;
end;

procedure chCurD_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementY:= 1;
end;

procedure chCurD_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementY:= 0;
end;

procedure chCurL_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementX:= -1;
end;

procedure chCurL_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementX:= 0;
end;

procedure chCurR_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementX:= 1;
end;

procedure chCurR_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
CursorMovementX:= 0;
end;

procedure chLeft_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('L');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmLeft
end;

procedure chLeft_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then exit;
if not CurrentTeam^.ExtDriven then SendIPC('l');
with CurrentHedgehog^.Gear^ do
    Message:= Message and not gmLeft
end;

procedure chRight_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('R');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmRight
end;

procedure chRight_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then exit;
if not CurrentTeam^.ExtDriven then SendIPC('r');
with CurrentHedgehog^.Gear^ do
    Message:= Message and not gmRight
end;

procedure chUp_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('U');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmUp
end;

procedure chUp_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then exit;
if not CurrentTeam^.ExtDriven then SendIPC('u');
with CurrentHedgehog^.Gear^ do
    Message:= Message and not gmUp
end;

procedure chDown_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('D');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmDown
end;

procedure chDown_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then exit;
if not CurrentTeam^.ExtDriven then SendIPC('d');
with CurrentHedgehog^.Gear^ do
    Message:= Message and not gmDown
end;

procedure chPrecise_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('Z');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmPrecise
end;

procedure chPrecise_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then exit;
if not CurrentTeam^.ExtDriven then SendIPC('z');
with CurrentHedgehog^.Gear^ do
    Message:= Message and not gmPrecise
end;

procedure chLJump(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('j');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmLJump
end;

procedure chHJump(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('J');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmHJump
end;

procedure chAttack_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    begin
    {$IFDEF DEBUGFILE}AddFileLog('/+attack: hedgehog''s Gear^.State = '+inttostr(State));{$ENDIF}
    if ((State and gstHHDriven) <> 0) then
        begin
        FollowGear:= CurrentHedgehog^.Gear;
        if not CurrentTeam^.ExtDriven then SendIPC('A');
        Message:= Message or gmAttack
        end
    end
end;

procedure chAttack_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then exit;
with CurrentHedgehog^.Gear^ do
    begin
    if not CurrentTeam^.ExtDriven and
        ((Message and gmAttack) <> 0) then SendIPC('a');
    Message:= Message and not gmAttack
    end
end;

procedure chSwitch(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
if not CurrentTeam^.ExtDriven then SendIPC('S');
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    Message:= Message or gmSwitch
end;

procedure chNextTurn(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    TryDo(AllInactive, '/nextturn called when not all gears are inactive', true);

    if not CurrentTeam^.ExtDriven then SendIPC('N');
{$IFDEF DEBUGFILE}
    AddFileLog('Doing SwitchHedgehog: time '+inttostr(GameTicks));
{$ENDIF}
    perfExt_NewTurnBeginning();
end;

procedure chSay(var s: shortstring);
begin
SendIPC('s' + s);

if copy(s, 1, 4) = '/me ' then
    s:= #2'* ' + UserNick + ' ' + copy(s, 5, Length(s) - 4)
else
    s:= #1 + UserNick + ': ' + s;

AddChatString(s)
end;

procedure chTeamSay(var s: shortstring);
begin
SendIPC('b' + s);

s:= #4 + '[Team] ' + UserNick + ': ' + s;

AddChatString(s)
end;

procedure chTimer(var s: shortstring);
begin
if (s[0] <> #1) or (s[1] < '1') or (s[1] > '5') or CheckNoTeamOrHH then exit;

if not CurrentTeam^.ExtDriven then SendIPC(s);
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    begin
    Message:= Message or gmTimer;
    MsgParam:= byte(s[1]) - ord('0')
    end
end;

procedure chSlot(var s: shortstring);
var slot: LongWord;
begin
if (s[0] <> #1) or CheckNoTeamOrHH then exit;
slot:= byte(s[1]) - 49;
if slot > cMaxSlotIndex then exit;
if not CurrentTeam^.ExtDriven then SendIPC(char(byte(s[1]) + 79));
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
with CurrentHedgehog^.Gear^ do
    begin
    Message:= Message or gmSlot;
    MsgParam:= slot
    end
end;

procedure chSetWeapon(var s: shortstring);
begin
    if (s[0] <> #1) or CheckNoTeamOrHH then exit;

    if TAmmoType(s[1]) > High(TAmmoType) then exit;

    if not CurrentTeam^.ExtDriven then SendIPC('w' + s);

    with CurrentHedgehog^.Gear^ do
    begin
        Message:= Message or gmWeapon;
        MsgParam:= byte(s[1]);
    end;
end;

procedure chTaunt(var s: shortstring);
begin
if (s[0] <> #1) or CheckNoTeamOrHH then exit;

if TWave(s[1]) > High(TWave) then exit;

if not CurrentTeam^.ExtDriven then SendIPC('t' + s);

with CurrentHedgehog^.Gear^ do
    begin
    Message:= Message or gmAnimate;
    MsgParam:= byte(s[1])
    end
end;

procedure chHogSay(var s: shortstring);
var Gear: PVisualGear;
    text: shortstring;
begin
text:= copy(s, 2, Length(s)-1);
if CheckNoTeamOrHH
or ((CurrentHedgehog^.Gear^.State and gstHHDriven) = 0) then
    begin
    chSay(text);
    exit
    end;

if not CurrentTeam^.ExtDriven then SendIPC('h' + s);

if byte(s[1]) < 4 then
    begin
    Gear:= AddVisualGear(0, 0, vgtSpeechBubble);
    if Gear <> nil then
    begin
    Gear^.Hedgehog:= CurrentHedgehog;
    Gear^.Text:= text;
    Gear^.FrameTicks:= byte(s[1])
    end
    end
else
    begin
    SpeechType:= byte(s[1])-3;
    SpeechText:= text
    end;

end;

procedure doPut(putX, putY: LongInt; fromAI: boolean);
begin
if CheckNoTeamOrHH or isPaused then exit;
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
bShowFinger:= false;
if not CurrentTeam^.ExtDriven and bShowAmmoMenu then
    begin
    bSelected:= true;
    exit
    end;

with CurrentHedgehog^.Gear^,
    CurrentHedgehog^ do
    if (State and gstHHChooseTarget) <> 0 then
        begin
        isCursorVisible:= false;
        if not CurrentTeam^.ExtDriven then
            begin
            if fromAI then
                begin
                TargetPoint.X:= putX;
                TargetPoint.Y:= putY
                end else
                begin
                TargetPoint.X:= CursorPoint.X - WorldDx;
                TargetPoint.Y:= cScreenHeight - CursorPoint.Y - WorldDy;
                end;
            SendIPCXY('p', TargetPoint.X, TargetPoint.Y);
            end
        else
            begin
            TargetPoint.X:= putX;
            TargetPoint.Y:= putY
            end;
        {$IFDEF DEBUGFILE}AddFilelog('put: ' + inttostr(TargetPoint.X) + ', ' + inttostr(TargetPoint.Y));{$ENDIF}
        State:= State and not gstHHChooseTarget;
        if (Ammoz[CurAmmoType].Ammo.Propz and ammoprop_AttackingPut) <> 0 then
            Message:= Message or gmAttack;
        end
    else
        if CurrentTeam^.ExtDriven then
            OutError('got /put while not being in choose target mode', false)
end;

procedure chPut(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    doPut(0, 0, false);
end;

procedure chCapture(var s: shortstring);
begin
s:= s; // avoid compiler hint
flagMakeCapture:= true
end;

procedure chSkip(var s: shortstring);
begin
s:= s; // avoid compiler hint
if not CurrentTeam^.ExtDriven then SendIPC(',');
uStats.Skipped;
skipFlag:= true
end;

procedure chSetMap(var s: shortstring);
begin
if isDeveloperMode then
begin
Pathz[ptMapCurrent]:= Pathz[ptMaps] + '/' + s;
InitStepsFlags:= InitStepsFlags or cifMap
end
end;

procedure chSetTheme(var s: shortstring);
begin
if isDeveloperMode then
begin
Pathz[ptCurrTheme]:= Pathz[ptThemes] + '/' + s;
InitStepsFlags:= InitStepsFlags or cifTheme
end
end;

procedure chSetSeed(var s: shortstring);
begin
if isDeveloperMode then
begin
SetRandomSeed(s);
cSeed:= s;
InitStepsFlags:= InitStepsFlags or cifRandomize
end
end;

procedure chAmmoMenu(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH then
    bShowAmmoMenu:= true
else
    begin
    with CurrentTeam^ do
        with Hedgehogs[CurrHedgehog] do
            begin
            bSelected:= false;

            if bShowAmmoMenu then bShowAmmoMenu:= false
            else if ((Gear^.State and (gstAttacking or gstAttacked)) <> 0) or 
                    ((MultiShootAttacks > 0) and ((Ammoz[CurAmmoType].Ammo.Propz and ammoprop_NoRoundEnd) = 0)) or
                    ((Gear^.State and gstHHDriven) = 0) then else bShowAmmoMenu:= true
            end;
    if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1
    end
end;

procedure chFullScr(var s: shortstring);
var flags: Longword = 0;
    ico: PSDL_Surface;
{$IFDEF DEBUGFILE}
    buf: array[byte] of char;
{$ENDIF}
begin
    s:= s; // avoid compiler hint
    if Length(s) = 0 then cFullScreen:= not cFullScreen
    else cFullScreen:= s = '1';

{$IFDEF DEBUGFILE}
    buf[0]:= char(0); // avoid compiler hint
    AddFileLog('Prepare to change video parameters...');
{$ENDIF}

    flags:= SDL_OPENGL;// or SDL_RESIZABLE;

    if cFullScreen then
        flags:= flags or SDL_FULLSCREEN;

{$IFDEF SDL_IMAGE_NEWER}
    WriteToConsole('Init SDL_image... ');
    SDLTry(IMG_Init(IMG_INIT_PNG) <> 0, true);
    WriteLnToConsole(msgOK);
{$ENDIF}
    // load engine icon
{$IFDEF DARWIN}
    ico:= LoadImage(Pathz[ptGraphics] + '/hwengine_mac', ifIgnoreCaps);
{$ELSE}
    ico:= LoadImage(Pathz[ptGraphics] + '/hwengine', ifIgnoreCaps);
{$ENDIF}
    if ico <> nil then
    begin
        SDL_WM_SetIcon(ico, 0);
        SDL_FreeSurface(ico)
    end;
    
    // set window caption
    SDL_WM_SetCaption('Hedgewars', nil);
    
    if SDLPrimSurface <> nil then
    begin
{$IFDEF DEBUGFILE}
        AddFileLog('Freeing old primary surface...');
{$ENDIF}
        SDL_FreeSurface(SDLPrimSurface);
        SDLPrimSurface:= nil;
    end;
    
{$IFDEF SDL13}
    if SDLwindow = nil then
    begin
        SDLwindow:= SDL_CreateWindow('Hedgewars', 0, 0, cScreenWidth, cScreenHeight,
                        SDL_WINDOW_OPENGL or SDL_WINDOW_SHOWN    
                        {$IFDEF IPHONEOS} or SDL_WINDOW_BORDERLESS{$ENDIF});     
        SDL_CreateRenderer(SDLwindow, -1, 0);
    end;
    
    SDL_SetRenderDrawColor(0, 0, 0, 255);    
    SDL_RenderFill(nil);     
    SDL_RenderPresent();
{$ELSE}
    SDLPrimSurface:= SDL_SetVideoMode(cScreenWidth, cScreenHeight, cBits, flags);
    SDLTry(SDLPrimSurface <> nil, true);
    PixelFormat:= SDLPrimSurface^.format;
{$ENDIF}

{$IFDEF DEBUGFILE}
    AddFileLog('Setting up OpenGL...');
    AddFileLog('SDL video driver: ' + shortstring(SDL_VideoDriverName(buf, sizeof(buf))));
{$ENDIF}
    SetupOpenGL();
end;

procedure chVol_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
inc(cVolumeDelta, 3)
end;

procedure chVol_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
dec(cVolumeDelta, 3)
end;

procedure chFindhh(var s: shortstring);
begin
s:= s; // avoid compiler hint
if CheckNoTeamOrHH or isPaused then exit;
bShowFinger:= true;
FollowGear:= CurrentHedgehog^.Gear
end;

procedure chPause(var s: shortstring);
begin
s:= s; // avoid compiler hint
if ReadyTimeLeft > 1 then ReadyTimeLeft:= 1;
if gameType <> gmtNet then
    isPaused:= not isPaused;
SDL_ShowCursor(ord(isPaused))
end;

procedure chRotateMask(var s: shortstring);
begin
s:= s; // avoid compiler hint
if ((GameFlags and gfInvulnerable) = 0) then cTagsMask:= cTagsMasks[cTagsMask] else cTagsMask:= cTagsMasksNoHealth[cTagsMask];
end;

procedure chSpeedup_p(var s: shortstring);
begin
s:= s; // avoid compiler hint
isSpeed:= true
end;

procedure chSpeedup_m(var s: shortstring);
begin
s:= s; // avoid compiler hint
isSpeed:= false
end;

procedure chZoomIn(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    if ZoomValue < cMinZoomLevel then
        ZoomValue:= ZoomValue + cZoomDelta;
end;

procedure chZoomOut(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    if ZoomValue > cMaxZoomLevel then
        ZoomValue:= ZoomValue - cZoomDelta;
end;

procedure chZoomReset(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    ZoomValue:= cDefaultZoomLevel;
end;

procedure chChat(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    GameState:= gsChat;
    KeyPressChat(27)
end;

procedure chHistory(var s: shortstring);
begin
    s:= s; // avoid compiler hint
    uChat.showAll:= not uChat.showAll
end;

procedure chLandCheck(var s: shortstring);
begin
{$IFDEF DEBUGFILE}
    AddFileLog('CheckLandDigest: ' + s + ' digest : ' + digest);
{$ENDIF}
    if digest = '' then
        digest:= s
    else
        TryDo(s = digest, 'Different maps generated, sorry', true);
end;

procedure chSendLandDigest(var s: shortstring);
var adler, i: LongInt;
begin
    adler:= 1;
    for i:= 0 to LAND_HEIGHT-1 do
        Adler32Update(adler, @Land[i,0], LAND_WIDTH);
    s:= 'M' + IntToStr(adler);

    chLandCheck(s);
    SendIPCRaw(@s[0], Length(s) + 1)
end;