Function zapper_set

src/lua-engine.cpp:2786–2813

zapper.set(table state) Sets the zapper state for the next frame advance.

//
//   Sets the zapper state for the next frame advance.
static int zapper_set(lua_State* L) {

	luaL_checktype(L, 1, LUA_TTABLE);

	luazapperx = -1;
	luazappery = -1;
	luazapperfire = -1;

	lua_getfield(L, 1, "x");
	if (!lua_isnil(L, -1)) luazapperx = lua_tointeger(L, -1);
	lua_pop(L, 1);

	lua_getfield(L, 1, "y");
	if (!lua_isnil(L, -1)) luazappery = lua_tointeger(L, -1);
	lua_pop(L, 1);

	lua_getfield(L, 1, "fire");
	if (!lua_isnil(L, -1))
	{
		if (lua_toboolean(L, -1)) // True or string
			luazapperfire = 1;
		if (lua_toboolean(L, -1) == 0 || lua_isstring(L, -1)) // False or string
			luazapperfire = 0;
	}
	lua_pop(L, 1);

	return 0;
}

// table joypad.read(int which = 1)
//