1 files changed, 75 insertions, 0 deletions

diff --git a/src/universe.cpp b/src/universe.cpp
new file mode 100644
index 0000000..0a014f7
--- /dev/null
+++ b/src/universe.cpp
@@ -0,0 +1,75 @@
+/*
+ * UNIVERSE.C                  Copyright (c) 2017, Benoit Germain
+ */
+
+/*
+===============================================================================
+
+Copyright (C) 2017 Benoit Germain <bnt.germain@gmail.com>
+
+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, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+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.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+===============================================================================
+*/
+
+#include <string.h>
+#include <assert.h>
+
+#include "universe.h"
+#include "compat.h"
+#include "macros_and_utils.h"
+#include "uniquekey.h"
+
+// crc64/we of string "UNIVERSE_REGKEY" generated at http://www.nitrxgen.net/hashgen/
+static DECLARE_CONST_UNIQUE_KEY( UNIVERSE_REGKEY, 0x9f877b2cf078f17f);
+
+// ################################################################################################
+
+Universe* universe_create( lua_State* L)
+{
+    Universe* U = (Universe*) lua_newuserdatauv( L, sizeof(Universe), 0);                          // universe
+    memset( U, 0, sizeof( Universe));
+    STACK_CHECK( L, 1);
+    REGISTRY_SET( L, UNIVERSE_REGKEY, lua_pushvalue(L, -2));                                       // universe
+    STACK_END( L, 1);
+    return U;
+}
+
+// ################################################################################################
+
+void universe_store( lua_State* L, Universe* U)
+{
+    STACK_CHECK( L, 0);
+    REGISTRY_SET( L, UNIVERSE_REGKEY, (NULL != U) ? lua_pushlightuserdata( L, U) : lua_pushnil( L));
+    STACK_END( L, 0);
+}
+
+// ################################################################################################
+
+Universe* universe_get( lua_State* L)
+{
+    Universe* universe;
+    STACK_GROW( L, 2);
+    STACK_CHECK( L, 0);
+    REGISTRY_GET( L, UNIVERSE_REGKEY);
+    universe = (Universe*) lua_touserdata( L, -1); // NULL if nil
+    lua_pop( L, 1);
+    STACK_END( L, 0);
+    return universe;
+}