Split liquid_viscosity to liquid_viscosity and move_resistance (#10810)

4 files changed, 29 insertions, 4 deletions

diff --git a/src/script/common/c_content.cpp b/src/script/common/c_content.cpp
index 5a095fd8f..8a5a3fe71 100644
--- a/src/script/common/c_content.cpp
+++ b/src/script/common/c_content.cpp
@@ -719,6 +719,9 @@ void read_content_features(lua_State *L, ContentFeatures &f, int index)
 	// the slowest possible
 	f.liquid_viscosity = getintfield_default(L, index,
 			"liquid_viscosity", f.liquid_viscosity);
+	// If move_resistance is not set explicitly,
+	// move_resistance is equal to liquid_viscosity
+	f.move_resistance = f.liquid_viscosity;
 	f.liquid_range = getintfield_default(L, index,
 			"liquid_range", f.liquid_range);
 	f.leveled = getintfield_default(L, index, "leveled", f.leveled);
@@ -822,6 +825,21 @@ void read_content_features(lua_State *L, ContentFeatures &f, int index)
 	getstringfield(L, index, "node_dig_prediction",
 		f.node_dig_prediction);
 
+	// How much the node slows down players, ranging from 1 to 7,
+	// the higher, the slower.
+	f.move_resistance = getintfield_default(L, index,
+			"move_resistance", f.move_resistance);
+
+	// Whether e.g. players in this node will have liquid movement physics
+	lua_getfield(L, index, "liquid_move_physics");
+	if(lua_isboolean(L, -1)) {
+		f.liquid_move_physics = lua_toboolean(L, -1);
+	} else if(lua_isnil(L, -1)) {
+		f.liquid_move_physics = f.liquid_type != LIQUID_NONE;
+	} else {
+		errorstream << "Field \"liquid_move_physics\": Invalid type!" << std::endl;
+	}
+	lua_pop(L, 1);
 }
 
 void push_content_features(lua_State *L, const ContentFeatures &c)
@@ -949,6 +967,10 @@ void push_content_features(lua_State *L, const ContentFeatures &c)
 	lua_setfield(L, -2, "legacy_wallmounted");
 	lua_pushstring(L, c.node_dig_prediction.c_str());
 	lua_setfield(L, -2, "node_dig_prediction");
+	lua_pushnumber(L, c.move_resistance);
+	lua_setfield(L, -2, "move_resistance");
+	lua_pushboolean(L, c.liquid_move_physics);
+	lua_setfield(L, -2, "liquid_move_physics");
 }
 
 /******************************************************************************/
diff --git a/src/script/cpp_api/s_node.h b/src/script/cpp_api/s_node.h
index 3f771c838..3c6a8445b 100644
--- a/src/script/cpp_api/s_node.h
+++ b/src/script/cpp_api/s_node.h
@@ -53,6 +53,7 @@ public:
 	static struct EnumString es_ContentParamType[];
 	static struct EnumString es_ContentParamType2[];
 	static struct EnumString es_LiquidType[];
+	static struct EnumString es_LiquidMoveType[];
 	static struct EnumString es_NodeBoxType[];
 	static struct EnumString es_TextureAlphaMode[];
 };
diff --git a/src/script/lua_api/l_localplayer.cpp b/src/script/lua_api/l_localplayer.cpp
index 9f3569ecc..bdbe98cb0 100644
--- a/src/script/lua_api/l_localplayer.cpp
+++ b/src/script/lua_api/l_localplayer.cpp
@@ -128,11 +128,11 @@ int LuaLocalPlayer::l_is_in_liquid_stable(lua_State *L)
 	return 1;
 }
 
-int LuaLocalPlayer::l_get_liquid_viscosity(lua_State *L)
+int LuaLocalPlayer::l_get_move_resistance(lua_State *L)
 {
 	LocalPlayer *player = getobject(L, 1);
 
-	lua_pushinteger(L, player->liquid_viscosity);
+	lua_pushinteger(L, player->move_resistance);
 	return 1;
 }
 
@@ -466,7 +466,6 @@ const luaL_Reg LuaLocalPlayer::methods[] = {
 		luamethod(LuaLocalPlayer, is_touching_ground),
 		luamethod(LuaLocalPlayer, is_in_liquid),
 		luamethod(LuaLocalPlayer, is_in_liquid_stable),
-		luamethod(LuaLocalPlayer, get_liquid_viscosity),
 		luamethod(LuaLocalPlayer, is_climbing),
 		luamethod(LuaLocalPlayer, swimming_vertical),
 		luamethod(LuaLocalPlayer, get_physics_override),
@@ -488,5 +487,7 @@ const luaL_Reg LuaLocalPlayer::methods[] = {
 		luamethod(LuaLocalPlayer, hud_change),
 		luamethod(LuaLocalPlayer, hud_get),
 
+		luamethod(LuaLocalPlayer, get_move_resistance),
+
 		{0, 0}
 };
diff --git a/src/script/lua_api/l_localplayer.h b/src/script/lua_api/l_localplayer.h
index 4413f2bdb..041545a49 100644
--- a/src/script/lua_api/l_localplayer.h
+++ b/src/script/lua_api/l_localplayer.h
@@ -51,7 +51,6 @@ private:
 	static int l_is_touching_ground(lua_State *L);
 	static int l_is_in_liquid(lua_State *L);
 	static int l_is_in_liquid_stable(lua_State *L);
-	static int l_get_liquid_viscosity(lua_State *L);
 	static int l_is_climbing(lua_State *L);
 	static int l_swimming_vertical(lua_State *L);
 
@@ -96,6 +95,8 @@ private:
 	// hud_get(self, id)
 	static int l_hud_get(lua_State *L);
 
+	static int l_get_move_resistance(lua_State *L);
+
 	LocalPlayer *m_localplayer = nullptr;
 
 public: