MRI: Add 'System.raw_key_states' to query full keyboard state

Returns a byte array with all key states (0 = released,
1 = pressed) indexed via SDL_SCANCODE_* enums.

binding-mri/binding-mri.cpp

@@ -76,8 +76,9 @@ void fileIntBindingInit();
 
 RB_METHOD(mriPrint);
 RB_METHOD(mriP);
-RB_METHOD(mriDataDirectory);
+RB_METHOD(mkxpDataDirectory);
 RB_METHOD(mkxpPuts);
+RB_METHOD(mkxpRawKeyStates);
 
 RB_METHOD(mriRgssMain);
 RB_METHOD(mriRgssStop);
@@ -139,8 +140,9 @@ static void mriBindingInit()
 		assert(!"unreachable");
 
 	VALUE mod = rb_define_module("System");
-	_rb_define_module_function(mod, "data_directory", mriDataDirectory);
+	_rb_define_module_function(mod, "data_directory", mkxpDataDirectory);
 	_rb_define_module_function(mod, "puts", mkxpPuts);
+	_rb_define_module_function(mod, "raw_key_states", mkxpRawKeyStates);
 
 	rb_gv_set("MKXP", Qtrue);
 }
@@ -151,18 +153,6 @@ showMsg(const std::string &msg)
 	shState->eThread().showMessageBox(msg.c_str());
 }
 
-RB_METHOD(mkxpPuts)
-{
-	RB_UNUSED_PARAM;
-
-	const char *str;
-	rb_get_args(argc, argv, "z", &str RB_ARG_END);
-
-	Debug() << str;
-
-	return Qnil;
-}
-
 static void printP(int argc, VALUE *argv,
                    const char *convMethod, const char *sep)
 {
@@ -199,7 +189,7 @@ RB_METHOD(mriP)
 	return Qnil;
 }
 
-RB_METHOD(mriDataDirectory)
+RB_METHOD(mkxpDataDirectory)
 {
 	RB_UNUSED_PARAM;
 
@@ -216,6 +206,28 @@ RB_METHOD(mriDataDirectory)
 	return pathStr;
 }
 
+RB_METHOD(mkxpPuts)
+{
+	RB_UNUSED_PARAM;
+
+	const char *str;
+	rb_get_args(argc, argv, "z", &str RB_ARG_END);
+
+	Debug() << str;
+
+	return Qnil;
+}
+
+RB_METHOD(mkxpRawKeyStates)
+{
+	RB_UNUSED_PARAM;
+
+	VALUE str = rb_str_new(0, sizeof(EventThread::keyStates));
+	memcpy(RSTRING_PTR(str), EventThread::keyStates, sizeof(EventThread::keyStates));
+
+	return str;
+}
+
 static VALUE rgssMainCb(VALUE block)
 {
 	rb_funcall2(block, rb_intern("call"), 0, 0);

src/eventthread.cpp

@@ -34,7 +34,7 @@
 
 #include <string.h>
 
-bool EventThread::keyStates[] = { false };
+uint8_t EventThread::keyStates[] = { false };
 
 EventThread::JoyState EventThread::joyState =
 {

src/eventthread.h

@@ -42,7 +42,7 @@ struct SDL_Window;
 class EventThread
 {
 public:
-	static bool keyStates[SDL_NUM_SCANCODES];
+	static uint8_t keyStates[SDL_NUM_SCANCODES];
 
 	struct JoyState
 	{