From aa146dee419e6a29409fac962b526ebcc79a98a1 Mon Sep 17 00:00:00 2001
From: Monster Iestyn <iestynjealous@ntlworld.com>
Date: Thu, 24 Nov 2016 21:11:44 +0000
Subject: [PATCH] Disabled all seg_t/node_t-related Lua code for now

To re-enable support for the above, uncomment the define HAVE_LUA_SEGS line in lua_script.h. Plain bbox userdata stuff is not disabled (though currently it's not used anyway)
---
 src/lua_libs.h   |  4 ++++
 src/lua_maplib.c | 10 ++++++++++
 src/lua_script.c | 10 ++++++++++
 src/lua_script.h |  3 +++
 4 files changed, 27 insertions(+)

diff --git a/src/lua_libs.h b/src/lua_libs.h
index fc8da25c1..fd4937b63 100644
--- a/src/lua_libs.h
+++ b/src/lua_libs.h
@@ -38,16 +38,20 @@ extern lua_State *gL;
 #define META_SUBSECTOR "SUBSECTOR_T*"
 #define META_SECTOR "SECTOR_T*"
 #define META_FFLOOR "FFLOOR_T*"
+#ifdef HAVE_LUA_SEGS
 #define META_SEG "SEG_T*"
 #define META_NODE "NODE_T*"
+#endif
 #define META_MAPHEADER "MAPHEADER_T*"
 
 #define META_CVAR "CONSVAR_T*"
 
 #define META_SECTORLINES "SECTOR_T*LINES"
 #define META_SIDENUM "LINE_T*SIDENUM"
+#ifdef HAVE_LUA_SEGS
 #define META_NODEBBOX "NODE_T*BBOX"
 #define META_NODECHILDREN "NODE_T*CHILDREN"
+#endif
 
 #define META_BBOX "BOUNDING_BOX"
 
diff --git a/src/lua_maplib.c b/src/lua_maplib.c
index 2679e4ba9..d6119bd11 100644
--- a/src/lua_maplib.c
+++ b/src/lua_maplib.c
@@ -185,6 +185,7 @@ static const char *const ffloor_opt[] = {
 	"alpha",
 	NULL};
 
+#ifdef HAVE_LUA_SEGS
 enum seg_e {
 	seg_valid = 0,
 	seg_v1,
@@ -242,6 +243,7 @@ static const char *const nodechild_opt[] = {
 	"right",
 	"left",
 	NULL};
+#endif
 
 enum bbox_e {
 	bbox_valid = 0,
@@ -892,6 +894,7 @@ static int vertex_num(lua_State *L)
 	return 1;
 }
 
+#ifdef HAVE_LUA_SEGS
 static int seg_get(lua_State *L)
 {
 	seg_t *seg = *((seg_t **)luaL_checkudata(L, 1, META_SEG));
@@ -1108,6 +1111,7 @@ static int nodechildren_get(lua_State *L)
 	lua_pushinteger(L, children[i]);
 	return 1;
 }
+#endif
 
 // bounding box (aka fixed_t array with four elements)
 // NOTE: may be useful for polyobjects or other things later
@@ -1376,6 +1380,7 @@ static int lib_numvertexes(lua_State *L)
 	return 1;
 }
 
+#ifdef HAVE_LUA_SEGS
 static int lib_iterateSegs(lua_State *L)
 {
 	size_t i = 0;
@@ -1467,6 +1472,7 @@ static int lib_numnodes(lua_State *L)
 	lua_pushinteger(L, numnodes);
 	return 1;
 }
+#endif
 
 static int ffloor_get(lua_State *L)
 {
@@ -1787,6 +1793,7 @@ int LUA_MapLib(lua_State *L)
 		lua_setfield(L, -2, "__newindex");
 	lua_pop(L, 1);
 
+#ifdef HAVE_LUA_SEGS
 	luaL_newmetatable(L, META_SEG);
 		lua_pushcfunction(L, seg_get);
 		lua_setfield(L, -2, "__index");
@@ -1814,6 +1821,7 @@ int LUA_MapLib(lua_State *L)
 		lua_pushcfunction(L, nodechildren_get);
 		lua_setfield(L, -2, "__index");
 	lua_pop(L, 1);
+#endif
 
 	luaL_newmetatable(L, META_BBOX);
 		lua_pushcfunction(L, bbox_get);
@@ -1878,6 +1886,7 @@ int LUA_MapLib(lua_State *L)
 		lua_setmetatable(L, -2);
 	lua_setglobal(L, "vertexes");
 
+#ifdef HAVE_LUA_SEGS
 	lua_newuserdata(L, 0);
 		lua_createtable(L, 0, 2);
 			lua_pushcfunction(L, lib_getSeg);
@@ -1897,6 +1906,7 @@ int LUA_MapLib(lua_State *L)
 			lua_setfield(L, -2, "__len");
 		lua_setmetatable(L, -2);
 	lua_setglobal(L, "nodes");
+#endif
 
 	lua_newuserdata(L, 0);
 		lua_createtable(L, 0, 2);
diff --git a/src/lua_script.c b/src/lua_script.c
index 6252330a4..d30790be1 100644
--- a/src/lua_script.c
+++ b/src/lua_script.c
@@ -426,6 +426,7 @@ void LUA_InvalidateLevel(void)
 		LUA_InvalidateUserdata(&sides[i]);
 	for (i = 0; i < numvertexes; i++)
 		LUA_InvalidateUserdata(&vertexes[i]);
+#ifdef HAVE_LUA_SEGS
 	for (i = 0; i < numsegs; i++)
 		LUA_InvalidateUserdata(&segs[i]);
 	for (i = 0; i < numnodes; i++)
@@ -434,6 +435,7 @@ void LUA_InvalidateLevel(void)
 		LUA_InvalidateUserdata(nodes[i].bbox);
 		LUA_InvalidateUserdata(nodes[i].children);
 	}
+#endif
 }
 
 void LUA_InvalidateMapthings(void)
@@ -473,8 +475,10 @@ enum
 	ARCH_SIDE,
 	ARCH_SUBSECTOR,
 	ARCH_SECTOR,
+#ifdef HAVE_LUA_SEGS
 	ARCH_SEG,
 	ARCH_NODE,
+#endif
 	ARCH_FFLOOR,
 	ARCH_MAPHEADER,
 
@@ -495,8 +499,10 @@ static const struct {
 	{META_SIDE,     ARCH_SIDE},
 	{META_SUBSECTOR,ARCH_SUBSECTOR},
 	{META_SECTOR,   ARCH_SECTOR},
+#ifdef HAVE_LUA_SEGS
 	{META_SEG,      ARCH_SEG},
 	{META_NODE,     ARCH_NODE},
+#endif
 	{META_FFLOOR,	ARCH_FFLOOR},
 	{META_MAPHEADER,   ARCH_MAPHEADER},
 	{NULL,          ARCH_NULL}
@@ -688,6 +694,7 @@ static UINT8 ArchiveValue(int TABLESINDEX, int myindex)
 			}
 			break;
 		}
+#ifdef HAVE_LUA_SEGS
 		case ARCH_SEG:
 		{
 			seg_t *seg = *((seg_t **)lua_touserdata(gL, myindex));
@@ -710,6 +717,7 @@ static UINT8 ArchiveValue(int TABLESINDEX, int myindex)
 			}
 			break;
 		}
+#endif
 		case ARCH_FFLOOR:
 		{
 			ffloor_t *rover = *((ffloor_t **)lua_touserdata(gL, myindex));
@@ -914,12 +922,14 @@ static UINT8 UnArchiveValue(int TABLESINDEX)
 	case ARCH_SECTOR:
 		LUA_PushUserdata(gL, &sectors[READUINT16(save_p)], META_SECTOR);
 		break;
+#ifdef HAVE_LUA_SEGS
 	case ARCH_SEG:
 		LUA_PushUserdata(gL, &segs[READUINT16(save_p)], META_SEG);
 		break;
 	case ARCH_NODE:
 		LUA_PushUserdata(gL, &nodes[READUINT16(save_p)], META_NODE);
 		break;
+#endif
 	case ARCH_FFLOOR:
 	{
 		sector_t *sector = &sectors[READUINT16(save_p)];
diff --git a/src/lua_script.h b/src/lua_script.h
index 3b159234a..d143ed879 100644
--- a/src/lua_script.h
+++ b/src/lua_script.h
@@ -92,4 +92,7 @@ void COM_Lua_f(void);
 	}\
 }
 
+// uncomment if you want seg_t/node_t in Lua
+// #define HAVE_LUA_SEGS
+
 #endif