(*

 * 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"}

unit uInputHandler;

interface

uses SDLh, uTypes;

procedure initModule;

procedure freeModule;

function  KeyNameToCode(name: shortstring): LongInt; inline;

function  KeyNameToCode(name: shortstring; Modifier: shortstring): LongInt;

//procedure MaskModifier(var code: LongInt; modifier: LongWord);

procedure MaskModifier(Modifier: shortstring; var code: LongInt);

procedure ProcessMouse(event: TSDL_MouseButtonEvent; ButtonDown: boolean);

procedure ProcessKey(event: TSDL_KeyboardEvent); inline;

procedure ProcessKey(code: LongInt; KeyDown: boolean);

procedure ResetKbd;

procedure FreezeEnterKey;

procedure InitKbdKeyTable;

procedure SetBinds(var binds: TBinds);

procedure SetDefaultBinds;

procedure chDefaultBind(var id: shortstring);

procedure ControllerInit;

procedure ControllerAxisEvent(joy, axis: Byte; value: Integer);

procedure ControllerHatEvent(joy, hat, value: Byte);

procedure ControllerButtonEvent(joy, button: Byte; pressed: Boolean);

implementation

uses uConsole, uCommands, uMisc, uVariables, uConsts, uUtils, uDebug;

const

    LSHIFT = $0200;

    RSHIFT = $0400;

    LALT   = $0800;

    RALT   = $1000;

    LCTRL  = $2000;

    RCTRL  = $4000; 

var tkbd: array[0..cKbdMaxIndex] of boolean;

    quitKeyCode, closeKeyCode: Byte;

    KeyNames: array [0..cKeyMaxIndex] of string[15];

    CurrentBinds: TBinds;

    ControllerNumControllers: Integer;

    ControllerEnabled: Integer;

    ControllerNumAxes: array[0..5] of Integer;

    //ControllerNumBalls: array[0..5] of Integer;

    ControllerNumHats: array[0..5] of Integer;

    ControllerNumButtons: array[0..5] of Integer;

    //ControllerBalls: array[0..5] of array[0..19] of array[0..1] of Integer;

    usingDBinds: boolean;

function  KeyNameToCode(name: shortstring): LongInt; inline;

begin

    KeyNameToCode:= KeyNameToCode(name, '');

end;

function KeyNameToCode(name: shortstring; Modifier: shortstring): LongInt;

var code: LongInt;

begin

    name:= LowerCase(name);

    code:= cKeyMaxIndex;

    while (code > 0) and (KeyNames[code] <> name) do dec(code);

    MaskModifier(Modifier, code);

    KeyNameToCode:= code;

end;

(*

procedure MaskModifier(var code: LongInt; Modifier: LongWord);

begin

    if(Modifier and KMOD_LSHIFT) <> 0 then code:= code or LSHIFT; 

    if(Modifier and KMOD_RSHIFT) <> 0 then code:= code or LSHIFT; 

    if(Modifier and KMOD_LALT) <> 0 then code:= code or LALT; 

    if(Modifier and KMOD_RALT) <> 0 then code:= code or LALT; 

    if(Modifier and KMOD_LCTRL) <> 0 then code:= code or LCTRL; 

    if(Modifier and KMOD_RCTRL) <> 0 then code:= code or LCTRL; 

end;

*)

procedure MaskModifier(Modifier: shortstring; var code: LongInt);

var mod_ : shortstring;

    ModifierCount, i: LongInt;

begin

if Modifier = '' then exit;

ModifierCount:= 0;

for i:= 1 to Length(Modifier) do

    if(Modifier[i] = ':') then inc(ModifierCount);

SplitByChar(Modifier, mod_, ':');//remove the first mod: part

Modifier:= mod_;

for i:= 0 to ModifierCount do

    begin 

    mod_:= '';

    SplitByChar(Modifier, mod_, ':');

    if (Modifier = 'lshift')                    then code:= code or LSHIFT;

    if (Modifier = 'rshift')                    then code:= code or RSHIFT;

    if (Modifier = 'lalt')                      then code:= code or LALT;

    if (Modifier = 'ralt')                      then code:= code or RALT;

    if (Modifier = 'lctrl') or (mod_ = 'lmeta') then code:= code or LCTRL;

    if (Modifier = 'rctrl') or (mod_ = 'rmeta') then code:= code or RCTRL;

    Modifier:= mod_;

    end;

end;

procedure ProcessKey(code: LongInt; KeyDown: boolean);

var

    Trusted: boolean;

    s      : string;

begin

if not(tkbd[code] xor KeyDown) then exit;

tkbd[code]:= KeyDown;

Trusted:= (CurrentTeam <> nil)

          and (not CurrentTeam^.ExtDriven)

          and (CurrentHedgehog^.BotLevel = 0);

// ctrl/cmd + q to close engine and frontend

if(KeyDown and (code = quitKeyCode)) then

    begin

{$IFDEF DARWIN}

    if tkbd[KeyNameToCode('left_meta')] or tkbd[KeyNameToCode('right_meta')] then

{$ELSE}

    if tkbd[KeyNameToCode('left_ctrl')] or tkbd[KeyNameToCode('right_ctrl')] then

{$ENDIF}

        ParseCommand('halt', true);

    end;

// ctrl/cmd + w to close engine

if(KeyDown and (code = closeKeyCode)) then

    begin

{$IFDEF DARWIN}

    // on OS X it this is expected behaviour

    if tkbd[KeyNameToCode('left_meta')] or tkbd[KeyNameToCode('right_meta')] then

{$ELSE}

    // on other systems use this shortcut only if the keys are not bound to any command

    if tkbd[KeyNameToCode('left_ctrl')] or tkbd[KeyNameToCode('right_ctrl')] then

        if ((CurrentBinds[KeyNameToCode('left_ctrl')] = '') or

            (CurrentBinds[KeyNameToCode('right_ctrl')] = '')) and

            (CurrentBinds[closeKeyCode] = '') then

{$ENDIF}

        ParseCommand('forcequit', true);

    end;

if CurrentBinds[code][0] <> #0 then

    begin

    if (code > 3) and KeyDown and (not ((CurrentBinds[code] = 'put')) or (CurrentBinds[code] = 'ammomenu') or (CurrentBinds[code] = '+cur_u') or (CurrentBinds[code] = '+cur_d') or (CurrentBinds[code] = '+cur_l') or (CurrentBinds[code] = '+cur_r')) and (CurrentTeam <> nil) and (not CurrentTeam^.ExtDriven) then bShowAmmoMenu:= false;

    if KeyDown then

        begin

        ParseCommand(CurrentBinds[code], Trusted);

        if (CurrentTeam <> nil) and (not CurrentTeam^.ExtDriven) and (ReadyTimeLeft > 1) then

            ParseCommand('gencmd R', true)

        end

    else if (CurrentBinds[code][1] = '+') then

        begin

        s:= CurrentBinds[code];

        s[1]:= '-';

        ParseCommand(s, Trusted);

        if (CurrentTeam <> nil) and (not CurrentTeam^.ExtDriven) and (ReadyTimeLeft > 1) then

            ParseCommand('gencmd R', true)

        end;

    end

end;

procedure ProcessKey(event: TSDL_KeyboardEvent); inline;

var code: LongInt;

begin

    code:= event.keysym.sym;

    //MaskModifier(code, event.keysym.modifier);

    ProcessKey(code, event.type_ = SDL_KEYDOWN);

end;

procedure ProcessMouse(event: TSDL_MouseButtonEvent; ButtonDown: boolean);

begin

case event.button of

    SDL_BUTTON_LEFT:

        ProcessKey(KeyNameToCode('mousel'), ButtonDown);

    SDL_BUTTON_MIDDLE:

        ProcessKey(KeyNameToCode('mousem'), ButtonDown);

    SDL_BUTTON_RIGHT:

        ProcessKey(KeyNameToCode('mouser'), ButtonDown);

    SDL_BUTTON_WHEELDOWN:

        ProcessKey(KeyNameToCode('wheeldown'), ButtonDown);

    SDL_BUTTON_WHEELUP:

        ProcessKey(KeyNameToCode('wheelup'), ButtonDown);

    end;

end;

procedure ResetKbd;

var t: LongInt;

begin

for t:= 0 to cKbdMaxIndex do

    if tkbd[t] then

        ProcessKey(t, False);

end;

procedure InitKbdKeyTable;

var i, j, k, t: LongInt;

    s: string[15];

begin

//TODO in sdl13 this overrides some values (A and B) change indices to some other values at the back perhaps?

KeyNames[1]:= 'mousel';

KeyNames[2]:= 'mousem';

KeyNames[3]:= 'mouser';

KeyNames[4]:= 'wheelup';

KeyNames[5]:= 'wheeldown';

for i:= 6 to cKeyMaxIndex do

    begin

    s:= shortstring(sdl_getkeyname(i));

    //WriteLnToConsole('uInputHandler - ' + IntToStr(i) + ': ' + s + ' ' + IntToStr(cKeyMaxIndex));

    if s = 'unknown key' then KeyNames[i]:= ''

    else 

        begin

        for t:= 1 to Length(s) do

            if s[t] = ' ' then

                s[t]:= '_';

        KeyNames[i]:= LowerCase(s)

        end;

    end;

quitKeyCode:= KeyNameToCode(_S'q');

closeKeyCode:= KeyNameToCode(_S'w');

// get the size of keyboard array

SDL_GetKeyState(@k);

// Controller(s)

for j:= 0 to Pred(ControllerNumControllers) do

    begin

    for i:= 0 to Pred(ControllerNumAxes[j]) do

        begin

        keynames[k + 0]:= 'j' + IntToStr(j) + 'a' + IntToStr(i) + 'u';

        keynames[k + 1]:= 'j' + IntToStr(j) + 'a' + IntToStr(i) + 'd';

        inc(k, 2);

        end;

    for i:= 0 to Pred(ControllerNumHats[j]) do

        begin

        keynames[k + 0]:= 'j' + IntToStr(j) + 'h' + IntToStr(i) + 'u';

        keynames[k + 1]:= 'j' + IntToStr(j) + 'h' + IntToStr(i) + 'r';

        keynames[k + 2]:= 'j' + IntToStr(j) + 'h' + IntToStr(i) + 'd';

        keynames[k + 3]:= 'j' + IntToStr(j) + 'h' + IntToStr(i) + 'l';

        inc(k, 4);

        end;

    for i:= 0 to Pred(ControllerNumButtons[j]) do

        begin

        keynames[k]:= 'j' + IntToStr(j) + 'b' + IntToStr(i);

        inc(k, 1);

        end;

    end;

DefaultBinds[KeyNameToCode('escape')]:= 'quit';

DefaultBinds[KeyNameToCode(_S'`')]:= 'history';

DefaultBinds[KeyNameToCode('delete')]:= 'rotmask';

//numpad

//DefaultBinds[265]:= '+volup';

//DefaultBinds[256]:= '+voldown';

DefaultBinds[KeyNameToCode(_S'0')]:= '+volup';

DefaultBinds[KeyNameToCode(_S'9')]:= '+voldown';

DefaultBinds[KeyNameToCode(_S'8')]:= 'mute';

DefaultBinds[KeyNameToCode(_S'c')]:= 'capture';

DefaultBinds[KeyNameToCode(_S'r')]:= 'record';

DefaultBinds[KeyNameToCode(_S'h')]:= 'findhh';

DefaultBinds[KeyNameToCode(_S'p')]:= 'pause';

DefaultBinds[KeyNameToCode(_S's')]:= '+speedup';

DefaultBinds[KeyNameToCode(_S't')]:= 'chat';

DefaultBinds[KeyNameToCode(_S'y')]:= 'confirm';

DefaultBinds[KeyNameToCode('mousem')]:= 'zoomreset';

DefaultBinds[KeyNameToCode('wheelup')]:= 'zoomout';

DefaultBinds[KeyNameToCode('wheeldown')]:= 'zoomin';

DefaultBinds[KeyNameToCode('f12')]:= 'fullscr';

DefaultBinds[KeyNameToCode('mousel')]:= '/put';

DefaultBinds[KeyNameToCode('mouser')]:= 'ammomenu';

DefaultBinds[KeyNameToCode('backspace')]:= 'hjump';

DefaultBinds[KeyNameToCode('tab')]:= 'switch';

DefaultBinds[KeyNameToCode('return')]:= 'ljump';

DefaultBinds[KeyNameToCode('space')]:= '+attack';

DefaultBinds[KeyNameToCode('up')]:= '+up';

DefaultBinds[KeyNameToCode('down')]:= '+down';

DefaultBinds[KeyNameToCode('left')]:= '+left';

DefaultBinds[KeyNameToCode('right')]:= '+right';

DefaultBinds[KeyNameToCode('left_shift')]:= '+precise';

DefaultBinds[KeyNameToCode('j0a0u')]:= '+left';

DefaultBinds[KeyNameToCode('j0a0d')]:= '+right';

DefaultBinds[KeyNameToCode('j0a1u')]:= '+up';

DefaultBinds[KeyNameToCode('j0a1d')]:= '+down';

for i:= 1 to 10 do DefaultBinds[KeyNameToCode('f'+IntToStr(i))]:= 'slot '+IntToStr(i);

for i:= 1 to 5  do DefaultBinds[KeyNameToCode(IntToStr(i))]:= 'timer '+IntToStr(i);

SetDefaultBinds();

end;

procedure SetBinds(var binds: TBinds);

{$IFNDEF MOBILE}

var

    t: LongInt;

{$ENDIF}

begin

{$IFDEF MOBILE}

    binds:= binds; // avoid hint

    CurrentBinds:= DefaultBinds;

{$ELSE}

    for t:= 0 to cKbdMaxIndex do

        if (CurrentBinds[t] <> binds[t]) and tkbd[t] then

            ProcessKey(t, False);

    CurrentBinds:= binds;

{$ENDIF}

end;

procedure SetDefaultBinds;

begin

    CurrentBinds:= DefaultBinds;

end;

procedure FreezeEnterKey;

begin

    tkbd[3]:= True;

    tkbd[13]:= True;

    tkbd[27]:= True;

    tkbd[271]:= True;

end;

var Controller: array [0..5] of PSDL_Joystick;

procedure ControllerInit;

begin

ControllerEnabled:= 0;

{$IFDEF IPHONE}

exit; // joystick subsystem disabled on iPhone

{$ENDIF}

SDL_InitSubSystem(SDL_INIT_JOYSTICK);

ControllerNumControllers:= SDL_NumJoysticks();

if ControllerNumControllers > 6 then

    ControllerNumControllers:= 6;

WriteLnToConsole('Number of game controllers: ' + IntToStr(ControllerNumControllers));

if ControllerNumControllers > 0 then

    begin

    for j:= 0 to pred(ControllerNumControllers) do

        begin

        WriteLnToConsole('Using game controller: ' + shortstring(SDL_JoystickName(j)));

        Controller[j]:= SDL_JoystickOpen(j);

        if Controller[j] = nil then

            WriteLnToConsole('* Failed to open game controller!')

        else

            begin

            ControllerNumAxes[j]:= SDL_JoystickNumAxes(Controller[j]);

            //ControllerNumBalls[j]:= SDL_JoystickNumBalls(Controller[j]);

            ControllerNumHats[j]:= SDL_JoystickNumHats(Controller[j]);

            ControllerNumButtons[j]:= SDL_JoystickNumButtons(Controller[j]);

            WriteLnToConsole('* Number of axes: ' + IntToStr(ControllerNumAxes[j]));

            //WriteLnToConsole('* Number of balls: ' + IntToStr(ControllerNumBalls[j]));

            WriteLnToConsole('* Number of hats: ' + IntToStr(ControllerNumHats[j]));

            WriteLnToConsole('* Number of buttons: ' + IntToStr(ControllerNumButtons[j]));

            ControllerEnabled:= 1;

            if ControllerNumAxes[j] > 20 then

                ControllerNumAxes[j]:= 20;

            //if ControllerNumBalls[j] > 20 then ControllerNumBalls[j]:= 20;

            if ControllerNumHats[j] > 20 then

                ControllerNumHats[j]:= 20;

            if ControllerNumButtons[j] > 20 then

                ControllerNumButtons[j]:= 20;

            for i:= 0 to pred(ControllerNumAxes[j]) do

                ControllerAxes[j][i]:= 0;

                begin

                ControllerBalls[j][i][0]:= 0;

                ControllerBalls[j][i][1]:= 0;

            for i:= 0 to pred(ControllerNumHats[j]) do

                ControllerHats[j][i]:= SDL_HAT_CENTERED;

            for i:= 0 to pred(ControllerNumButtons[j]) do

            end;

        end;

    // enable event generation/controller updating

    SDL_JoystickEventState(1);

    end

else

    WriteLnToConsole('Not using any game controller');

end;

procedure ControllerAxisEvent(joy, axis: Byte; value: Integer);

var

    k: LongInt;

begin

    SDL_GetKeyState(@k);

    k:= k + joy * (ControllerNumAxes[joy]*2 + ControllerNumHats[joy]*4 + ControllerNumButtons[joy]*2);

    ProcessKey(k +  axis*2, value > 20000);

    ProcessKey(k + (axis*2)+1, value < -20000);

end;

procedure ControllerHatEvent(joy, hat, value: Byte);

var

    k: LongInt;

begin

    SDL_GetKeyState(@k);

    k:= k + joy * (ControllerNumAxes[joy]*2 + ControllerNumHats[joy]*4 + ControllerNumButtons[joy]*2);

    ProcessKey(k +  ControllerNumAxes[joy]*2 + hat*4 + 0, (value and SDL_HAT_UP)   <> 0);

    ProcessKey(k +  ControllerNumAxes[joy]*2 + hat*4 + 1, (value and SDL_HAT_RIGHT)<> 0);

    ProcessKey(k +  ControllerNumAxes[joy]*2 + hat*4 + 2, (value and SDL_HAT_DOWN) <> 0);

    ProcessKey(k +  ControllerNumAxes[joy]*2 + hat*4 + 3, (value and SDL_HAT_LEFT) <> 0);

end;

procedure ControllerButtonEvent(joy, button: Byte; pressed: Boolean);

var

    k: LongInt;

begin

    SDL_GetKeyState(@k);

    k:= k + joy * (ControllerNumAxes[joy]*2 + ControllerNumHats[joy]*4 + ControllerNumButtons[joy]*2);

    ProcessKey(k +  ControllerNumAxes[joy]*2 + ControllerNumHats[joy]*4 + button, pressed);

end;

// Bind that isn't a team bind, but overrides defaultbinds.

// When first called, DefaultBinds is cleared, because we assume we are getting a full list of dbinds.

procedure chDefaultBind(var id: shortstring);

var KeyName, Modifier, tmp: shortstring;

    b: LongInt;

begin

KeyName:= '';

Modifier:= '';

if (not usingDBinds) then

    begin

    usingDBinds:= true;

    FillByte(DefaultBinds, SizeOf(DefaultBinds), 0);

    end;

if (Pos('mod:', id) <> 0) then

    begin

    tmp:= '';

    SplitBySpace(id, tmp);

    Modifier:= id;

    id:= tmp;

    end;

SplitBySpace(id, KeyName);

if KeyName[1]='"' then

    Delete(KeyName, 1, 1);

if KeyName[byte(KeyName[0])]='"' then