mirror of
https://github.com/0ldsk00l/nestopia.git
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138 lines
2.9 KiB
C++
138 lines
2.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////
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//
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// Nestopia - NES/Famicom emulator written in C++
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//
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// Copyright (C) 2003-2008 Martin Freij
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//
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// This file is part of Nestopia.
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//
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// Nestopia is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// Nestopia is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Nestopia; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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////////////////////////////////////////////////////////////////////////////////////////
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#include "NstInpDevice.hpp"
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#include "NstInpMouse.hpp"
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namespace Nes
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{
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namespace Core
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{
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namespace Input
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{
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#ifdef NST_MSVC_OPTIMIZE
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#pragma optimize("s", on)
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#endif
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Mouse::Mouse(const Cpu& c)
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: Device(c,Api::Input::MOUSE)
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{
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Mouse::Reset();
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}
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void Mouse::Reset()
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{
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strobe = 0;
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stream = 0;
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state = 0;
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}
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void Mouse::SaveState(State::Saver& saver,const byte id) const
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{
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const byte data[2] =
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{
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strobe, stream ^ 0xFF
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};
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saver.Begin( AsciiId<'M','S'>::R(0,0,id) ).Write( data ).End();
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}
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void Mouse::LoadState(State::Loader& loader,const dword id)
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{
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if (id == AsciiId<'M','S'>::V)
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{
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State::Loader::Data<2> data( loader );
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strobe = data[0] & 0x1;
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stream = data[1] ^ 0xFF;
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}
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}
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#ifdef NST_MSVC_OPTIMIZE
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#pragma optimize("", on)
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#endif
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uint Mouse::Peek(uint)
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{
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const uint data = stream;
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stream >>= 1;
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return ~data & 0x1;
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}
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void Mouse::Poke(uint data)
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{
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const uint prev = strobe;
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strobe = data & 0x1;
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if (prev > strobe)
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{
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if (input)
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{
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Controllers::Mouse& mouse = input->mouse;
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input = NULL;
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if (Controllers::Mouse::callback( mouse ))
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{
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data = 0x00;
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if (mouse.button)
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data = 0x01;
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int ox = x;
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int oy = y;
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x = NST_MIN(mouse.x,255);
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y = NST_MIN(mouse.y,239);
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ox -= x;
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oy -= y;
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if (ox > 0)
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{
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data |= 0x0C;
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}
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else if (ox < 0)
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{
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data |= 0x04;
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}
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if (oy > 0)
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{
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data |= 0x30;
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}
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else if (oy < 0)
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{
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data |= 0x10;
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}
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state = data ^ 0xFF;
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}
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}
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stream = state;
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}
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}
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}
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}
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}
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