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added support for joystick axes to lua function, controller.get()

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QueeferSutherland 2018-10-12 00:19:39 -04:00 committed by GitHub
parent da714ea719
commit b9829ba349
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1 changed files with 34 additions and 0 deletions
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34
desmume/src/lua-engine.cpp
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@ -4733,6 +4733,40 @@ DEFINE_LUA_FUNCTION(controller_get, "[joystickID = 0 [,returnDiagonals = false]]
pow *= 2;
}
// add all available joystick axes to the table; axes will be scaled from -1 to 1
double scaledpos;
#define SCALEAXIS(pos, srcmin, srcmax, dstmin, dstmax) ((pos - srcmin) * (dstmax - dstmin) / (srcmax - srcmin) + dstmin)
if (joycaps.wNumAxes > 0) {
scaledpos = SCALEAXIS(joyinfoex.dwXpos, joycaps.wXmin, joycaps.wXmax, -1.0, 1.0);
lua_pushnumber(L, scaledpos);
lua_setfield(L, -2, "x");
}
if (joycaps.wNumAxes > 1) {
scaledpos = SCALEAXIS(joyinfoex.dwYpos, joycaps.wYmin, joycaps.wYmax, -1.0, 1.0);
lua_pushnumber(L, scaledpos);
lua_setfield(L, -2, "y");
}
if (joycaps.wCaps & JOYCAPS_HASZ) {
scaledpos = SCALEAXIS(joyinfoex.dwZpos, joycaps.wZmin, joycaps.wZmax, -1.0, 1.0);
lua_pushnumber(L, scaledpos);
lua_setfield(L, -2, "z");
}
if (joycaps.wCaps & JOYCAPS_HASR) {
scaledpos = SCALEAXIS(joyinfoex.dwRpos, joycaps.wRmin, joycaps.wRmax, -1.0, 1.0);
lua_pushnumber(L, scaledpos);
lua_setfield(L, -2, "r");
}
if (joycaps.wCaps & JOYCAPS_HASU) {
scaledpos = SCALEAXIS(joyinfoex.dwUpos, joycaps.wUmin, joycaps.wUmax, -1.0, 1.0);
lua_pushnumber(L, scaledpos);
lua_setfield(L, -2, "u");
}
if (joycaps.wCaps & JOYCAPS_HASV) {
scaledpos = SCALEAXIS(joyinfoex.dwVpos, joycaps.wVmin, joycaps.wVmax, -1.0, 1.0);
lua_pushnumber(L, scaledpos);
lua_setfield(L, -2, "v");
}
return 1; // return the table
}
static const struct luaL_reg controllerlib [] = {