mkxp/src/keybindings.cpp

312 lines
6.3 KiB
C++
Raw Normal View History

/*
** keybindings.cpp
**
** This file is part of mkxp.
**
** Copyright (C) 2014 Jonas Kulla <Nyocurio@gmail.com>
**
** mkxp 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, either version 2 of the License, or
** (at your option) any later version.
**
** mkxp 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 mkxp. If not, see <http://www.gnu.org/licenses/>.
*/
#include "keybindings.h"
#include "config.h"
#include "util.h"
#include <stdio.h>
struct KbBindingData
{
SDL_Scancode source;
Input::ButtonCode target;
void add(BDescVec &d) const
{
SourceDesc src;
src.type = Key;
src.d.scan = source;
BindingDesc desc;
desc.src = src;
desc.target = target;
d.push_back(desc);
}
};
struct JsBindingData
{
int source;
Input::ButtonCode target;
void add(BDescVec &d) const
{
SourceDesc src;
src.type = JButton;
src.d.jb = source;
BindingDesc desc;
desc.src = src;
desc.target = target;
d.push_back(desc);
}
};
/* Common */
static const KbBindingData defaultKbBindings[] =
{
{ SDL_SCANCODE_LEFT, Input::Left },
{ SDL_SCANCODE_RIGHT, Input::Right },
{ SDL_SCANCODE_UP, Input::Up },
{ SDL_SCANCODE_DOWN, Input::Down },
{ SDL_SCANCODE_SPACE, Input::C },
{ SDL_SCANCODE_RETURN, Input::C },
{ SDL_SCANCODE_ESCAPE, Input::B },
{ SDL_SCANCODE_KP_0, Input::B },
{ SDL_SCANCODE_LSHIFT, Input::A },
{ SDL_SCANCODE_X, Input::B },
{ SDL_SCANCODE_D, Input::Z },
{ SDL_SCANCODE_Q, Input::L },
{ SDL_SCANCODE_W, Input::R },
{ SDL_SCANCODE_A, Input::X },
{ SDL_SCANCODE_S, Input::Y }
};
/* RGSS1 */
static const KbBindingData defaultKbBindings1[] =
{
{ SDL_SCANCODE_Z, Input::A },
{ SDL_SCANCODE_C, Input::C },
};
/* RGSS2 and higher */
static const KbBindingData defaultKbBindings2[] =
{
{ SDL_SCANCODE_Z, Input::C }
};
static elementsN(defaultKbBindings);
static elementsN(defaultKbBindings1);
static elementsN(defaultKbBindings2);
static const JsBindingData defaultJsBindings[] =
{
{ 0, Input::A },
{ 1, Input::B },
{ 2, Input::C },
{ 3, Input::X },
{ 4, Input::Y },
{ 5, Input::Z },
{ 6, Input::L },
{ 7, Input::R }
};
static elementsN(defaultJsBindings);
static void addAxisBinding(BDescVec &d, uint8_t axis, AxisDir dir, Input::ButtonCode target)
{
SourceDesc src;
src.type = JAxis;
src.d.ja.axis = axis;
src.d.ja.dir = dir;
BindingDesc desc;
desc.src = src;
desc.target = target;
d.push_back(desc);
}
BDescVec genDefaultBindings(const Config &conf)
{
BDescVec d;
for (size_t i = 0; i < defaultKbBindingsN; ++i)
defaultKbBindings[i].add(d);
if (conf.rgssVersion == 1)
for (size_t i = 0; i < defaultKbBindings1N; ++i)
defaultKbBindings1[i].add(d);
else
for (size_t i = 0; i < defaultKbBindings2N; ++i)
defaultKbBindings2[i].add(d);
for (size_t i = 0; i < defaultJsBindingsN; ++i)
defaultJsBindings[i].add(d);
addAxisBinding(d, 0, Negative, Input::Left );
addAxisBinding(d, 0, Positive, Input::Right);
addAxisBinding(d, 1, Negative, Input::Up );
addAxisBinding(d, 1, Positive, Input::Down );
return d;
}
#define FORMAT_VER 1
struct Header
{
uint32_t formVer;
uint32_t rgssVer;
uint32_t count;
};
static void buildPath(const std::string &dir, uint32_t rgssVersion,
char *out, size_t outSize)
{
snprintf(out, outSize, "%s/keybindings.mkxp%u", dir.c_str(), rgssVersion);
}
static bool writeBindings(const BDescVec &d, const std::string &dir,
uint32_t rgssVersion)
{
if (dir.empty())
return false;
char path[1024];
buildPath(dir, rgssVersion, path, sizeof(path));
FILE *f = fopen(path, "wb");
if (!f)
return false;
Header hd;
hd.formVer = FORMAT_VER;
hd.rgssVer = rgssVersion;
hd.count = d.size();
if (fwrite(&hd, sizeof(hd), 1, f) < 1)
{
fclose(f);
return false;
}
if (fwrite(&d[0], sizeof(d[0]), hd.count, f) < hd.count)
{
fclose(f);
return false;
}
fclose(f);
return true;
}
void storeBindings(const BDescVec &d, const Config &conf)
{
if (writeBindings(d, conf.customDataPath, conf.rgssVersion))
return;
writeBindings(d, conf.commonDataPath, conf.rgssVersion);
}
#define READ(ptr, size, n, f) if (fread(ptr, size, n, f) < n) return false
static bool verifyDesc(const BindingDesc &desc)
{
const Input::ButtonCode codes[] =
{
Input::None,
Input::Down, Input::Left, Input::Right, Input::Up,
Input::A, Input::B, Input::C,
Input::X, Input::Y, Input::Z,
Input::L, Input::R,
Input::Shift, Input::Ctrl, Input::Alt,
Input::F5, Input::F6, Input::F7, Input::F8, Input::F9
};
elementsN(codes);
size_t i;
for (i = 0; i < codesN; ++i)
if (desc.target == codes[i])
break;
if (i == codesN)
return false;
const SourceDesc &src = desc.src;
switch (src.type)
{
case Invalid:
return true;
case Key:
return src.d.scan < SDL_NUM_SCANCODES;
case JButton:
return true;
case JAxis:
return src.d.ja.dir == Negative || src.d.ja.dir == Positive;
default:
return false;
}
}
static bool readBindings(BDescVec &out, const std::string &dir,
uint32_t rgssVersion)
{
if (dir.empty())
return false;
char path[1024];
buildPath(dir, rgssVersion, path, sizeof(path));
FILE *f = fopen(path, "rb");
if (!f)
return false;
Header hd;
if (fread(&hd, sizeof(hd), 1, f) < 1)
{
fclose(f);
return false;
}
if (hd.formVer != FORMAT_VER)
return false;
if (hd.rgssVer != rgssVersion)
return false;
/* Arbitrary max value */
if (hd.count > 1024)
return false;
out.resize(hd.count);
if (fread(&out[0], sizeof(out[0]), hd.count, f) < hd.count)
{
fclose(f);
return false;
}
for (size_t i = 0; i < hd.count; ++i)
if (!verifyDesc(out[i]))
return false;
return true;
}
BDescVec loadBindings(const Config &conf)
{
BDescVec d;
if (readBindings(d, conf.customDataPath, conf.rgssVersion))
return d;
if (readBindings(d, conf.commonDataPath, conf.rgssVersion))
return d;
return genDefaultBindings(conf);
}