From 9040a659bcf7d52fb11b0bbbb1db6c1651a80270 Mon Sep 17 00:00:00 2001
From: LHoG <1476261+lhog@users.noreply.github.com>
Date: Sun, 19 Dec 2021 23:13:30 +0300
Subject: [PATCH] Implement
 https://github.com/beyond-all-reason/spring/issues/143

---
 rts/Lua/LuaUnsyncedCtrl.cpp | 28 ++++++++++++++++++++++++++++
 rts/Lua/LuaUnsyncedCtrl.h   |  2 ++
 2 files changed, 30 insertions(+)

diff --git a/rts/Lua/LuaUnsyncedCtrl.cpp b/rts/Lua/LuaUnsyncedCtrl.cpp
index b288ec5080..8b15c2d9bb 100644
--- a/rts/Lua/LuaUnsyncedCtrl.cpp
+++ b/rts/Lua/LuaUnsyncedCtrl.cpp
@@ -40,6 +40,8 @@
 #include "Map/ReadMap.h"
 #include "Map/BaseGroundDrawer.h"
 #include "Map/BaseGroundTextures.h"
+#include "Map/SMF/SMFGroundDrawer.h"
+#include "Map/SMF/ROAM/RoamMeshDrawer.h"
 #include "Net/Protocol/NetProtocol.h"
 #include "Net/GameServer.h"
 #include "Rendering/Env/ISky.h"
@@ -259,6 +261,8 @@ bool LuaUnsyncedCtrl::PushEntries(lua_State* L)
 	REGISTER_LUA_CFUNC(SetSunDirection);
 	REGISTER_LUA_CFUNC(SetMapRenderingParams);
 
+	REGISTER_LUA_CFUNC(ForceTesselationUpdate);
+
 	REGISTER_LUA_CFUNC(SendSkirmishAIMessage);
 
 	REGISTER_LUA_CFUNC(SetLogSectionFilterLevel);
@@ -3042,6 +3046,30 @@ int LuaUnsyncedCtrl::SetMapRenderingParams(lua_State* L)
 	return 0;
 }
 
+int LuaUnsyncedCtrl::ForceTesselationUpdate(lua_State* L)
+{
+	CSMFGroundDrawer* smfDrawer = dynamic_cast<CSMFGroundDrawer*>(readMap->GetGroundDrawer());
+
+	if (smfDrawer == nullptr) {
+		lua_pushboolean(L, false);
+		return 1;
+	}
+
+	CRoamMeshDrawer* roamMeshDrawer = dynamic_cast<CRoamMeshDrawer*>(smfDrawer->GetMeshDrawer());
+	if (roamMeshDrawer == nullptr) {
+		lua_pushboolean(L, false);
+		return 1;
+	}
+
+	CRoamMeshDrawer::ForceNextTesselation(
+		luaL_optboolean(L, 1, true ),
+		luaL_optboolean(L, 2, false)
+	);
+
+	lua_pushboolean(L, true);
+	return 1;
+}
+
 
 /******************************************************************************/
 /******************************************************************************/
diff --git a/rts/Lua/LuaUnsyncedCtrl.h b/rts/Lua/LuaUnsyncedCtrl.h
index cd26af7e5d..e3d66cf6db 100644
--- a/rts/Lua/LuaUnsyncedCtrl.h
+++ b/rts/Lua/LuaUnsyncedCtrl.h
@@ -164,6 +164,8 @@ class LuaUnsyncedCtrl {
 		static int SetSunDirection(lua_State* L);
 		static int SetMapRenderingParams(lua_State* L);
 
+		static int ForceTesselationUpdate(lua_State* L);
+
 		static int SendSkirmishAIMessage(lua_State* L);
 
 		static int SetLogSectionFilterLevel(lua_State* L);