Accidentally left OptionsBinding.h out of previous commit.

src/OptionsBinding.h

@@ -0,0 +1,95 @@
+/* OptionsBinding - little helpers so that SongOptions and PlayerOptions can more easily have similar interfaces. */
+
+// No .cpp file because it's just some #defines, and not in a makefile because it doesn't need to be.
+// DefaultNilArgs would be in here, but then there would need to be a .cpp file, and DefaultNilArgs is more widely useful.
+
+#ifndef OptionsBinding_H
+#define OptionsBinding_H
+	// Functions are designed to combine Get and Set into one, to be less clumsy to use. -Kyz
+	// If a valid arg is passed, the value is set.
+	// The previous value is returned.
+#define FLOAT_INTERFACE(func_name, member, valid) \
+	static int func_name(T* p, lua_State* L) \
+	{ \
+		DefaultNilArgs(L, 2); \
+		lua_pushnumber(L, p->m_f ## member); \
+		lua_pushnumber(L, p->m_Speedf ## member); \
+		if(lua_isnumber(L, 1)) \
+		{ \
+			float v= FArg(1); \
+			if(!valid) \
+			{ \
+				luaL_error(L, "Invalid value %f", v); \
+			} \
+			p->m_f ## member = v; \
+			if(p->m_Speedf ## member <= 0.0f) \
+			{ \
+				p->m_Speedf ## member = 1.0f; \
+			} \
+		} \
+		if(lua_isnumber(L, 2)) \
+		{ \
+			p->m_Speedf ## member = FArgGTEZero(L, 2); \
+		} \
+		return 2; \
+	}
+#define INT_INTERFACE(func_name, member) \
+	static int func_name(T* p, lua_State* L) \
+	{ \
+		DefaultNilArgs(L, 1); \
+		lua_pushnumber(L, p->m_i ## member); \
+		if(lua_isnumber(L, 1)) \
+		{ \
+			p->m_i ## member = IArg(1); \
+		} \
+		return 1; \
+	}
+#define BOOL_INTERFACE(func_name, member) \
+	static int func_name(T* p, lua_State* L) \
+	{ \
+		DefaultNilArgs(L, 1); \
+		lua_pushboolean(L, p->m_b ## member); \
+		if(lua_isboolean(L, 1)) \
+		{ \
+			p->m_b ## member = BArg(1); \
+		} \
+		return 1; \
+	}
+#define ENUM_INTERFACE(func_name, member, enum_name) \
+	static int func_name(T* p, lua_State* L) \
+	{ \
+		DefaultNilArgs(L, 1); \
+		Enum::Push(L, p->m_ ## member); \
+		if(!lua_isnil(L, 1)) \
+		{ \
+			p->m_ ## member= Enum::Check<enum_name>(L, 1); \
+		} \
+		return 1; \
+	}
+
+#endif
+
+/*
+ * (c) 2014 Eric Reese
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */