Lua marix API compiles. does not work

teensy/lua.cpp

@@ -1,6 +1,7 @@
 #include "log.h"
 #include "lua.hpp"
 #include <cstdint>
+#include "luamatrix.h"
 
 extern "C" {
 #include "lua.h"
@@ -95,24 +96,6 @@ static void l_memstats() {
     return ll_realloc(ptr, nsize);
 }
 
-// CREATE ARRAY TYPE AND EXPOSE led_data TO LUA.
-// metatable method for handling "array[index]"
-/* static int led_data_index (lua_State* L) { 
-   CRGB** parray = (CRGB **) luaL_checkudata(L, 1, "led_data");
-   int index = luaL_checkint(L, 2);
-   lua_pushnumber(L, (*parray)[index-1]);
-   return 1; 
-}
-
-// metatable method for handle "array[index] = value"
-static int led_data_newindex (lua_State* L) { 
-   CRGB** parray = (CRGB **) luaL_checkudata(L, 1, "led_data");
-   int index = luaL_checkint(L, 2);
-   int value = luaL_checkint(L, 3);
-   (*parray)[index-1] = value;
-   return 0; 
-} */
-
 void l_yield(lua_State *L, lua_Debug *ar) {
   lua_yield(L, 0);
 }
@@ -153,43 +136,6 @@ int full_run(lua_State *L, lua_State *t) {
   return rc;
 }
 
-/* static const struct luaL_Reg led_data_metamethods[] = {
-    { "__index",  led_data_index  },
-    { "__newindex",  led_data_newindex  },
-    {NULL, NULL}
-};
-
-
-// create a metatable for our array type
-static void create_array_type(lua_State* L) {
-  luaL_newmetatable(L, "led_data");
-  luaL_setfuncs(L, led_data_metamethods, 0);
-  //lua_setglobal(L, "led_data");
-}
-
-
-// expose an array to lua, by storing it in a userdata with the array metatable
-static int expose_array(lua_State* L, CRGB array[]) {
-   CRGB** parray = (CRGB **) lua_newuserdata(L, sizeof(CRGB**));
-   *parray = array;
-   luaL_getmetatable(L, "led_data");
-   lua_setmetatable(L, -2);
-   return 1;
-}
-
-// test routine which exposes our test array to Lua 
-static int getarray (lua_State* L) { 
-   return expose_array( L, led_data );
-}
-
-int luaopen_array (lua_State* L) {
-   create_array_type(L);
-
-   // make our test routine available to Lua
-   lua_register(L, "led_data", getarray);
-   return 0;
-} */
-
 // This code blatantly stolen and borrowed from lbaselib.c luaB_print
 static int l_print (lua_State *L) {
   int n = lua_gettop(L);  /* number of arguments */
@@ -262,7 +208,7 @@ void l_start(const char *prgm) {
   debug_log("Importing libraries");
   
   l_openlibs(L);
-  // luaopen_array(L);
+  luaopen_matrixpanel(L);
   lua_pushcfunction(L, l_print);
   lua_setglobal(L, "print");
 

teensy/luamatrix.cpp

@@ -0,0 +1,58 @@
+#include "luamatrix.h"
+#include "matrix.h"
+#include "lua.hpp"
+
+// CREATE ARRAY TYPE AND EXPOSE matrixpanel TO LUA.
+// metatable method for handling "array[index]"
+/* static int matrixpanel_index (lua_State* L) { 
+   CRGB** parray = (CRGB **) luaL_checkudata(L, 1, "matrixpanel");
+   int index = luaL_checkint(L, 2);
+   lua_pushnumber(L, (*parray)[index-1]);
+   return 1; 
+}
+
+// metatable method for handle "array[index] = value"
+static int matrixpanel_newindex (lua_State* L) { 
+   CRGB** parray = (CRGB **) luaL_checkudata(L, 1, "matrixpanel");
+   int index = luaL_checkint(L, 2);
+   int value = luaL_checkint(L, 3);
+   (*parray)[index-1] = value;
+   return 0; 
+} */
+
+static const struct luaL_Reg matrixpanel_metamethods[] = {
+//    { "__index",  matrixpanel_index  },
+//    { "__newindex",  matrixpanel_newindex  },
+    {NULL, NULL}
+};
+
+
+// create a metatable for our array type
+static void create_matrixpanel_type(lua_State* L) {
+  luaL_newmetatable(L, "matrixpanel");
+  luaL_setfuncs(L, matrixpanel_metamethods, 0);
+  //lua_setglobal(L, "matrixpanel");
+}
+
+
+// expose an array to lua, by storing it in a userdata with the array metatable
+static int expose_array(lua_State* L) {
+   RGBmatrixPanel **pmatrix = (RGBmatrixPanel **) lua_newuserdata(L, sizeof(RGBmatrixPanel **));
+   *pmatrix = &matrixpanel;
+   luaL_getmetatable(L, "matrixpanel");
+   lua_setmetatable(L, -2);
+   return 1;
+}
+
+// test routine which exposes our test array to Lua 
+static int getmatrixpanel (lua_State* L) { 
+   return expose_array( L );
+}
+
+int luaopen_matrixpanel (lua_State* L) {
+   create_matrixpanel_type(L);
+
+   // make our test routine available to Lua
+   lua_register(L, "matrixpanel", getmatrixpanel);
+   return 0;
+}

teensy/luamatrix.h

@@ -0,0 +1,13 @@
+#ifndef __LUALIGHTS_LUAMATRIX_H
+#define __LUALIGHTS_LUAMATRIX_H
+
+extern "C" {
+#include "lua.h"
+#include "lualib.h"
+#include "lauxlib.h"
+#include "lua-alloc.h"
+};
+
+int luaopen_matrixpanel (lua_State* L);
+
+#endif

teensy/matrix.h

@@ -1,5 +1,5 @@
-#ifndef __LUALIGHTS_LUA_ALLOC_H
-#define __LUALIGHTS_LUA_ALLOC_H
+#ifndef __LUALIGHTS_MATRIX_H
+#define __LUALIGHTS_MATRIX_H
 
 #include <Adafruit_GFX.h>
 #include <RGBmatrixPanel.h>