688 lines
13 KiB
C++
688 lines
13 KiB
C++
/*
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** input.cpp
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**
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** This file is part of mkxp.
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**
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** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
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**
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** mkxp 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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** mkxp 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 mkxp. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "input.h"
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#include "sharedstate.h"
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#include "eventthread.h"
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#include "keybindings.h"
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#include "exception.h"
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#include "util.h"
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#include <SDL_scancode.h>
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#include <SDL_mouse.h>
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#include <vector>
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#include <string.h>
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#include <assert.h>
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#define BUTTON_CODE_COUNT 24
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struct ButtonState
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{
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bool pressed;
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bool triggered;
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bool repeated;
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ButtonState()
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: pressed(false),
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triggered(false),
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repeated(false)
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{}
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};
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struct KbBindingData
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{
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SDL_Scancode source;
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Input::ButtonCode target;
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};
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struct Binding
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{
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Binding(Input::ButtonCode target = Input::None)
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: target(target)
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{}
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virtual bool sourceActive() const = 0;
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virtual bool sourceRepeatable() const = 0;
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Input::ButtonCode target;
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};
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/* Keyboard binding */
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struct KbBinding : public Binding
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{
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KbBinding() {}
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KbBinding(const KbBindingData &data)
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: Binding(data.target),
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source(data.source)
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{}
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bool sourceActive() const
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{
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/* Special case aliases */
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if (source == SDL_SCANCODE_LSHIFT)
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return EventThread::keyStates[source]
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|| EventThread::keyStates[SDL_SCANCODE_RSHIFT];
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if (source == SDL_SCANCODE_RETURN)
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return EventThread::keyStates[source]
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|| EventThread::keyStates[SDL_SCANCODE_KP_ENTER];
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return EventThread::keyStates[source];
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}
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bool sourceRepeatable() const
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{
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return (source >= SDL_SCANCODE_A && source <= SDL_SCANCODE_0) ||
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(source >= SDL_SCANCODE_RIGHT && source <= SDL_SCANCODE_UP) ||
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(source >= SDL_SCANCODE_F1 && source <= SDL_SCANCODE_F12);
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}
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SDL_Scancode source;
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};
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/* Joystick button binding */
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struct JsButtonBinding : public Binding
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{
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JsButtonBinding() {}
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bool sourceActive() const
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{
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return EventThread::joyState.buttons[source];
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}
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bool sourceRepeatable() const
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{
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return true;
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}
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uint8_t source;
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};
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/* Joystick axis binding */
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struct JsAxisBinding : public Binding
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{
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JsAxisBinding() {}
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JsAxisBinding(uint8_t source,
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AxisDir dir,
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Input::ButtonCode target)
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: Binding(target),
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source(source),
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dir(dir)
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{}
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bool sourceActive() const
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{
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int val = EventThread::joyState.axes[source];
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if (dir == Negative)
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return val < -JAXIS_THRESHOLD;
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else /* dir == Positive */
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return val > JAXIS_THRESHOLD;
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}
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bool sourceRepeatable() const
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{
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return true;
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}
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uint8_t source;
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AxisDir dir;
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};
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/* Joystick hat binding */
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struct JsHatBinding : public Binding
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{
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JsHatBinding() {}
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JsHatBinding(uint8_t source,
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uint8_t pos,
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Input::ButtonCode target)
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: Binding(target),
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source(source),
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pos(pos)
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{}
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bool sourceActive() const
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{
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/* For a diagonal input accept it as an input for both the axes */
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return (pos & EventThread::joyState.hats[source]) != 0;
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}
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bool sourceRepeatable() const
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{
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return true;
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}
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uint8_t source;
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uint8_t pos;
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};
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/* Mouse button binding */
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struct MsBinding : public Binding
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{
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MsBinding() {}
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MsBinding(int buttonIndex,
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Input::ButtonCode target)
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: Binding(target),
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index(buttonIndex)
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{}
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bool sourceActive() const
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{
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return EventThread::mouseState.buttons[index];
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}
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bool sourceRepeatable() const
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{
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return false;
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}
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int index;
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};
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/* Not rebindable */
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static const KbBindingData staticKbBindings[] =
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{
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{ SDL_SCANCODE_LSHIFT, Input::Shift },
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{ SDL_SCANCODE_RSHIFT, Input::Shift },
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{ SDL_SCANCODE_LCTRL, Input::Ctrl },
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{ SDL_SCANCODE_RCTRL, Input::Ctrl },
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{ SDL_SCANCODE_LALT, Input::Alt },
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{ SDL_SCANCODE_RALT, Input::Alt },
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{ SDL_SCANCODE_F5, Input::F5 },
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{ SDL_SCANCODE_F6, Input::F6 },
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{ SDL_SCANCODE_F7, Input::F7 },
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{ SDL_SCANCODE_F8, Input::F8 },
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{ SDL_SCANCODE_F9, Input::F9 }
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};
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static elementsN(staticKbBindings);
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/* Maps ButtonCode enum values to indices
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* in the button state array */
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static const int mapToIndex[] =
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{
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0, 0,
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1, 0, 2, 0, 3, 0, 4, 0,
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0,
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5, 6, 7, 8, 9, 10, 11, 12,
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0, 0,
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13, 14, 15,
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0,
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16, 17, 18, 19, 20,
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0, 0, 0, 0, 0, 0, 0, 0,
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21, 22, 23
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};
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static elementsN(mapToIndex);
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static const Input::ButtonCode dirs[] =
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{ Input::Down, Input::Left, Input::Right, Input::Up };
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static const int dirFlags[] =
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{
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1 << Input::Down,
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1 << Input::Left,
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1 << Input::Right,
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1 << Input::Up
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};
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/* Dir4 is always zero on these combinations */
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static const int deadDirFlags[] =
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{
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dirFlags[0] | dirFlags[3],
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dirFlags[1] | dirFlags[2]
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};
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static const Input::ButtonCode otherDirs[4][3] =
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{
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{ Input::Left, Input::Right, Input::Up }, /* Down */
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{ Input::Down, Input::Up, Input::Right }, /* Left */
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{ Input::Down, Input::Up, Input::Left }, /* Right */
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{ Input::Left, Input::Right, Input::Up } /* Up */
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};
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struct InputPrivate
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{
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std::vector<KbBinding> kbStatBindings;
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std::vector<KbBinding> kbBindings;
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std::vector<JsAxisBinding> jsABindings;
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std::vector<JsHatBinding> jsHBindings;
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std::vector<JsButtonBinding> jsBBindings;
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std::vector<MsBinding> msBindings;
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/* Collective binding array */
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std::vector<Binding*> bindings;
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ButtonState stateArray[BUTTON_CODE_COUNT*2];
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ButtonState *states;
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ButtonState *statesOld;
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Input::ButtonCode repeating;
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unsigned int repeatCount;
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struct
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{
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int active;
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Input::ButtonCode previous;
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} dir4Data;
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struct
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{
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int active;
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} dir8Data;
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InputPrivate(const RGSSThreadData &rtData)
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{
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initStaticKbBindings();
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initMsBindings();
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/* Main thread should have these posted by now */
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checkBindingChange(rtData);
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states = stateArray;
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statesOld = stateArray + BUTTON_CODE_COUNT;
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/* Clear buffers */
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clearBuffer();
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swapBuffers();
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clearBuffer();
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repeating = Input::None;
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repeatCount = 0;
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dir4Data.active = 0;
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dir4Data.previous = Input::None;
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dir8Data.active = 0;
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}
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inline ButtonState &getStateCheck(int code)
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{
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int index;
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if (code < 0 || (size_t) code > mapToIndexN-1)
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index = 0;
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else
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index = mapToIndex[code];
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return states[index];
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}
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inline ButtonState &getState(Input::ButtonCode code)
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{
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return states[mapToIndex[code]];
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}
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inline ButtonState &getOldState(Input::ButtonCode code)
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{
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return statesOld[mapToIndex[code]];
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}
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void swapBuffers()
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{
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ButtonState *tmp = states;
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states = statesOld;
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statesOld = tmp;
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}
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void clearBuffer()
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{
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const size_t size = sizeof(ButtonState) * BUTTON_CODE_COUNT;
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memset(states, 0, size);
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}
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void checkBindingChange(const RGSSThreadData &rtData)
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{
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BDescVec d;
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if (!rtData.bindingUpdateMsg.poll(d))
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return;
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applyBindingDesc(d);
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}
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template<class B>
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void appendBindings(std::vector<B> &bind)
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{
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for (size_t i = 0; i < bind.size(); ++i)
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bindings.push_back(&bind[i]);
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}
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void applyBindingDesc(const BDescVec &d)
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{
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kbBindings.clear();
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jsABindings.clear();
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jsHBindings.clear();
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jsBBindings.clear();
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for (size_t i = 0; i < d.size(); ++i)
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{
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const BindingDesc &desc = d[i];
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const SourceDesc &src = desc.src;
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if (desc.target == Input::None)
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continue;
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switch (desc.src.type)
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{
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case Invalid :
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break;
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case Key :
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{
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KbBinding bind;
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bind.source = src.d.scan;
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bind.target = desc.target;
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kbBindings.push_back(bind);
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break;
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}
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case JAxis :
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{
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JsAxisBinding bind;
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bind.source = src.d.ja.axis;
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bind.dir = src.d.ja.dir;
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bind.target = desc.target;
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jsABindings.push_back(bind);
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break;
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}
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case JHat :
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{
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JsHatBinding bind;
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bind.source = src.d.jh.hat;
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bind.pos = src.d.jh.pos;
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bind.target = desc.target;
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jsHBindings.push_back(bind);
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break;
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}
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case JButton :
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{
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JsButtonBinding bind;
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bind.source = src.d.jb;
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bind.target = desc.target;
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jsBBindings.push_back(bind);
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break;
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}
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default :
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assert(!"unreachable");
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}
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}
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bindings.clear();
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appendBindings(kbStatBindings);
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appendBindings(msBindings);
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appendBindings(kbBindings);
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appendBindings(jsABindings);
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appendBindings(jsHBindings);
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appendBindings(jsBBindings);
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}
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void initStaticKbBindings()
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{
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kbStatBindings.clear();
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for (size_t i = 0; i < staticKbBindingsN; ++i)
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kbStatBindings.push_back(KbBinding(staticKbBindings[i]));
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}
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void initMsBindings()
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{
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msBindings.resize(3);
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size_t i = 0;
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msBindings[i++] = MsBinding(SDL_BUTTON_LEFT, Input::MouseLeft);
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msBindings[i++] = MsBinding(SDL_BUTTON_MIDDLE, Input::MouseMiddle);
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msBindings[i++] = MsBinding(SDL_BUTTON_RIGHT, Input::MouseRight);
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}
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void pollBindings(Input::ButtonCode &repeatCand)
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{
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for (size_t i = 0; i < bindings.size(); ++i)
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pollBindingPriv(*bindings[i], repeatCand);
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updateDir4();
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updateDir8();
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}
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void pollBindingPriv(const Binding &b,
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Input::ButtonCode &repeatCand)
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{
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if (!b.sourceActive())
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return;
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if (b.target == Input::None)
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return;
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ButtonState &state = getState(b.target);
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ButtonState &oldState = getOldState(b.target);
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state.pressed = true;
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/* Must have been released before to trigger */
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if (!oldState.pressed)
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state.triggered = true;
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/* Unbound keys don't create/break repeat */
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if (repeatCand != Input::None)
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return;
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if (repeating != b.target &&
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!oldState.pressed)
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{
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if (b.sourceRepeatable())
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repeatCand = b.target;
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else
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/* Unrepeatable keys still break current repeat */
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repeating = Input::None;
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}
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}
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void updateDir4()
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{
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int dirFlag = 0;
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for (size_t i = 0; i < 4; ++i)
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dirFlag |= (getState(dirs[i]).pressed ? dirFlags[i] : 0);
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if (dirFlag == deadDirFlags[0] || dirFlag == deadDirFlags[1])
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{
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dir4Data.active = Input::None;
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return;
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}
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if (dir4Data.previous != Input::None)
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{
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/* Check if prev still pressed */
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if (getState(dir4Data.previous).pressed)
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{
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for (size_t i = 0; i < 3; ++i)
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{
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Input::ButtonCode other =
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otherDirs[(dir4Data.previous/2)-1][i];
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if (!getState(other).pressed)
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continue;
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dir4Data.active = other;
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return;
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}
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}
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}
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for (size_t i = 0; i < 4; ++i)
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{
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if (!getState(dirs[i]).pressed)
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continue;
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dir4Data.active = dirs[i];
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dir4Data.previous = dirs[i];
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return;
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}
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dir4Data.active = Input::None;
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dir4Data.previous = Input::None;
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}
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void updateDir8()
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{
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static const int combos[4][4] =
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{
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{ 2, 1, 3, 0 },
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{ 1, 4, 0, 7 },
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{ 3, 0, 6, 9 },
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{ 0, 7, 9, 8 }
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};
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dir8Data.active = 0;
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for (size_t i = 0; i < 4; ++i)
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{
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Input::ButtonCode one = dirs[i];
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if (!getState(one).pressed)
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continue;
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for (int j = 0; j < 3; ++j)
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{
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Input::ButtonCode other = otherDirs[i][j];
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if (!getState(other).pressed)
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continue;
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dir8Data.active = combos[(one/2)-1][(other/2)-1];
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return;
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}
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dir8Data.active = one;
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return;
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}
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}
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};
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Input::Input(const RGSSThreadData &rtData)
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{
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p = new InputPrivate(rtData);
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}
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void Input::update()
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{
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shState->checkShutdown();
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p->checkBindingChange(shState->rtData());
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p->swapBuffers();
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p->clearBuffer();
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ButtonCode repeatCand = None;
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/* Poll all bindings */
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p->pollBindings(repeatCand);
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/* Check for new repeating key */
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if (repeatCand != None && repeatCand != p->repeating)
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{
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p->repeating = repeatCand;
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p->repeatCount = 0;
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p->getState(repeatCand).repeated = true;
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return;
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}
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/* Check if repeating key is still pressed */
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if (p->getState(p->repeating).pressed)
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{
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p->repeatCount++;
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bool repeated;
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if (rgssVer >= 2)
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repeated = p->repeatCount >= 23 && ((p->repeatCount+1) % 6) == 0;
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else
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repeated = p->repeatCount >= 15 && ((p->repeatCount+1) % 4) == 0;
|
|
|
|
p->getState(p->repeating).repeated |= repeated;
|
|
|
|
return;
|
|
}
|
|
|
|
p->repeating = None;
|
|
}
|
|
|
|
bool Input::isPressed(int button)
|
|
{
|
|
return p->getStateCheck(button).pressed;
|
|
}
|
|
|
|
bool Input::isTriggered(int button)
|
|
{
|
|
return p->getStateCheck(button).triggered;
|
|
}
|
|
|
|
bool Input::isRepeated(int button)
|
|
{
|
|
return p->getStateCheck(button).repeated;
|
|
}
|
|
|
|
int Input::dir4Value()
|
|
{
|
|
return p->dir4Data.active;
|
|
}
|
|
|
|
int Input::dir8Value()
|
|
{
|
|
return p->dir8Data.active;
|
|
}
|
|
|
|
int Input::mouseX()
|
|
{
|
|
RGSSThreadData &rtData = shState->rtData();
|
|
|
|
if (!EventThread::mouseState.inWindow)
|
|
return -20;
|
|
|
|
return (EventThread::mouseState.x - rtData.screenOffset.x) * rtData.sizeResoRatio.x;
|
|
}
|
|
|
|
int Input::mouseY()
|
|
{
|
|
RGSSThreadData &rtData = shState->rtData();
|
|
|
|
if (!EventThread::mouseState.inWindow)
|
|
return -20;
|
|
|
|
return (EventThread::mouseState.y - rtData.screenOffset.y) * rtData.sizeResoRatio.y;
|
|
}
|
|
|
|
Input::~Input()
|
|
{
|
|
delete p;
|
|
}
|