(*

 * 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): word;

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 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;

var tkbd, tkbdn: TKeyboardState;

    quitKeyCode: Byte;

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

    CurrentBinds: TBinds;

function KeyNameToCode(name: shortstring): word;

var code: Word;

begin

    name:= LowerCase(name);

    code:= cKeyMaxIndex;

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

    KeyNameToCode:= code;

end;

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

var

    Trusted: boolean;

    s      : string;

begin

hideAmmoMenu:= false;

Trusted:= (CurrentTeam <> nil)

          and (not CurrentTeam^.ExtDriven)

          and (CurrentHedgehog^.BotLevel = 0);

tkbdn[code]:= ord(KeyDown);

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

if(KeyDown and (code = quitKeyCode)) then

    begin

{$IFDEF DARWIN}

    if ((tkbdn[KeyNameToCode('left_meta')] = 1) or (tkbdn[KeyNameToCode('right_meta')] = 1)) then

{$ELSE}

    if ((tkbdn[KeyNameToCode('left_ctrl')] = 1) or (tkbdn[KeyNameToCode('right_ctrl')] = 1)) then

{$ENDIF}

        ParseCommand('halt', true);    

    end;

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

    begin

    if (code > 3) and (tkbdn[code] <> 0) 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')) then hideAmmoMenu:= true;

    if (tkbd[code] = 0) and (tkbdn[code] <> 0) 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] = '+') and (tkbdn[code] = 0) and (tkbd[code] <> 0) 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;

    tkbd[code]:= tkbdn[code]

    end

end;

procedure ProcessKey(event: TSDL_KeyboardEvent); inline;

begin

    ProcessKey(event.keysym.sym, 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 j, t: LongInt;

    i: LongInt;

    pkbd: PByteArray;

begin

//k:= SDL_GetMouseState(nil, nil);

pkbd:=SDL_GetKeyState(@j);

//TryDo(j < cKeyMaxIndex, 'SDL keys number is more than expected (' + IntToStr(j) + ')', true);

for i:= 1 to pred(j) do

    tkbdn[i]:= pkbd^[i];

(*

// TODO: reimplement

// Controller(s)

k:= j; // should we test k for hitting the limit? sounds rather unlikely to ever reach it

for j:= 0 to Pred(ControllerNumControllers) do

    begin

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

        begin

        if ControllerAxes[j][i] > 20000 then

            tkbdn[k + 0]:= 1

        else

            tkbdn[k + 0]:= 0;

        if ControllerAxes[j][i] < -20000 then

            tkbdn[k + 1]:= 1

        else

            tkbdn[k + 1]:= 0;

        inc(k, 2);

        end;

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

        begin

        tkbdn[k + 0]:= ControllerHats[j][i] and SDL_HAT_UP;

        tkbdn[k + 1]:= ControllerHats[j][i] and SDL_HAT_RIGHT;

        tkbdn[k + 2]:= ControllerHats[j][i] and SDL_HAT_DOWN;

        tkbdn[k + 3]:= ControllerHats[j][i] and SDL_HAT_LEFT;

        inc(k, 4);

        end;

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

        begin

        tkbdn[k]:= ControllerButtons[j][i];

        inc(k, 1);

        end;

    end;

*)

// what is this final loop for?

for t:= 0 to cKeyMaxIndex do

    tkbd[t]:= tkbdn[t]

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));

    //WriteToConsole(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');

// 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('grave')]:= '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'c')]:= 'capture';

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);

begin

{$IFDEF MOBILE}

    binds:= binds; // avoid hint

    CurrentBinds:= DefaultBinds;

{$ELSE}

    CurrentBinds:= binds;

{$ENDIF}

end;

procedure SetDefaultBinds;

begin

    CurrentBinds:= DefaultBinds;

end;

procedure FreezeEnterKey;

begin

    tkbd[3]:= 1;

    tkbd[13]:= 1;

    tkbd[27]:= 1;

    tkbd[271]:= 1;

end;

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

procedure ControllerInit;

var i, j: Integer;

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: ' + 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;

            // reset all buttons/axes

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

                ControllerAxes[j][i]:= 0;

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

                begin

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

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

                end;*)

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

                ControllerHats[j][i]:= SDL_HAT_CENTERED;

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

                ControllerButtons[j][i]:= 0;

            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;

procedure initModule;

begin

    wheelUp:= false;

    wheelDown:= false;

end;

procedure freeModule;

var j: LongInt;

begin

    // close gamepad controllers

    if ControllerEnabled > 0 then

        for j:= 0 to pred(ControllerNumControllers) do

            SDL_JoystickClose(Controller[j]);

end;

end.