LunaCON: properly initialize values of session (NODEFAULT) gamevars.

git-svn-id: https://svn.eduke32.com/eduke32@4570 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/source/lunatic/con_lang.lua

@@ -431,7 +431,6 @@ local ActorLabels = {
     xpanning = SX".xpanning",
     ypanning = SX".ypanning",
 
-    -- Read access differs from write, write not available:
     alpha = { "_math.floor(spriteext[%s].alpha*255)", "spriteext[%s].alpha=(%%s)/255" },
 
     isvalid = { "_con._isvalid(%s)" },

polymer/eduke32/source/lunatic/defs.ilua

@@ -1684,7 +1684,7 @@ local function getnumlocals(l)
     -- 200 is the max. number of locals at one level
     for i=1,200 do
         -- level:
-        -- 0 is getlocal() itself.
+        -- 0 is debug.getlocal() itself.
         -- 1 is this function (getnumlocals).
         -- 2 is the function calling getnumlocals()
         -- 3 is the function calling that one.
@@ -2288,12 +2288,14 @@ do
 
         -- XXX: System gamevars? Most of them ought to be saved with C data.
         for modname, modvars in pairs(module_gamevars) do
+            local isCON = (modname==CON_MODULE_NAME)
+
             sb:startmod(modname)
 
             -- Handle global gamevars first.
             for i=1,#modvars do
                 local varname = modvars[i]
-                local excludedVars = modname==CON_MODULE_NAME and varname=="_V" and
+                local excludedVars = isCON and varname=="_V" and
                     package_loaded[CON_MODULE_NAME]._V._IS_NORESET_GAMEVAR or nil
 
                 -- Serialize gamevar named 'varname' from module named 'modname'.
@@ -2303,7 +2305,7 @@ do
                     -- We couldn't serialize that gamevar.
                     slenptr[0] = -1
                     -- Signal which gamevar that was.
-                    return (modname==CON_MODULE_NAME and "<CON>" or modname).."."..varname
+                    return (isCON and "<CON>" or modname).."."..varname
                 end
             end
 
@@ -2335,8 +2337,8 @@ do
         local savecode = sb:getcode()
 
         if (ffiC._DEBUG_LUNATIC ~= 0) then
-            -- Dump the code if Lunatic debugging is enabled and there is a
-            -- LUNATIC_SAVECODE_FN variable in the environment.
+            -- Dump the code if Lunatic debugging is enabled (-Lopts=diag) and
+            -- there is a LUNATIC_SAVECODE_FN variable in the environment.
             local os = require("os")
             local fn = os.getenv("LUNATIC_SAVECODE_FN")
 
@@ -2538,7 +2540,7 @@ if (assert(concode ~= nil)) then
 
     local function protect_con_table(tab)
         -- NOTE: Some of our code specifically excepts the name tables to be
-        -- indexable with nonexistent keys. See e.g. control.c: _A_SpawnGlass()
+        -- indexable with nonexistent keys. See e.g. control.lua: _A_SpawnGlass()
         if (ffiC._LUNATIC_STRICT ~= 0) then
             tab = setmetatable(tab, index_error_mt)
         end
@@ -2588,3 +2590,8 @@ if (not g_firstRun) then
 
     ffiC.g_elFirstTime = 0
 end
+
+if (g_restorefunc) then
+    -- Clear it so that it may be garbage-collected.
+    g_restorefunc = nil
+end

polymer/eduke32/source/lunatic/doc/lunatic.txt

@@ -121,8 +121,8 @@ _backtrace_ added. Additionally, errors not caught by a `pcall` result a
 permanent message to appear on the screen, containing the source file name and
 line number.
 
-*`print(...)`*::
-The messages are printed to the OSD and the log. Color codes available in
+*`print(str)`*::
+Prints a single message to the OSD and the log. Color codes available in
 EDuke32 (e.g. `^10` for dark red) are interpreted. Overriding `tostring` has no
 effect on Lunatic's `print` as it uses the initial, built-in `tostring`
 function instead of looking it up in the global environment.

polymer/eduke32/source/lunatic/lunacon.lua

@@ -1476,7 +1476,6 @@ function Cmd.gamevar(identifier, initval, flags)
         return
     end
 
-    -- TODO: handle user bits like NORESET or NODEFAULT
     if (bit.band(flags, bit.bnot(GVFLAG.USER_MASK)) ~= 0) then
         -- TODO: a couple of the presumably safe ones
         errprintf("gamevar flags other than 1, 2, 1024 or 131072: NYI or forbidden")
@@ -1492,6 +1491,7 @@ function Cmd.gamevar(identifier, initval, flags)
     end
 
     local ogv = g_gamevar[identifier]
+    -- handle NORESET or NODEFAULT
     local isSessionVar = (bit.band(flags, GVFLAG.NODEFAULT) ~= 0)
     local storeWithSavegames = (bit.band(flags, GVFLAG.NORESET) == 0)
 
@@ -1573,9 +1573,15 @@ function Cmd.gamevar(identifier, initval, flags)
         end
 
         -- Declare new session gamevar.
-        g_gamevar[identifier] = { name=format("_gv._sessionVar[%d]", g_numSessionVars),
-                                  flags=flags, loc=getLocation(), used=0 }
+        local gv = { name=format("_gv._sessionVar[%d]", g_numSessionVars),
+                     flags=flags, loc=getLocation(), used=0 }
         g_numSessionVars = g_numSessionVars+1
+
+        g_gamevar[identifier] = gv;
+        -- Initialize it (i.e. set to the declared initial value) on first run,
+        -- but not from savegames.
+        addcodef("if _S then %s=%d end", gv.name, initval)
+
         return
     end