Implement client node dig prediction

Dig prediction allows clients to remove dug nodes without
waiting for server acknowledgement.
This patch allows mods to override dig prediction,
it can either be turned off or a different "prediction node"
can be selected.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/script/common/c_content.cpp b/src/script/common/c_content.cpp
index 9e1fed2f1..ad92741f8 100644
--- a/src/script/common/c_content.cpp
+++ b/src/script/common/c_content.cpp
@@ -737,6 +737,10 @@ ContentFeatures read_content_features(lua_State *L, int index)
 	}
 	lua_pop(L, 1);
 
+	// Node immediately placed by client when node is dug
+	getstringfield(L, index, "node_dig_prediction",
+		f.node_dig_prediction);
+
 	return f;
 }
 
@@ -861,6 +865,8 @@ void push_content_features(lua_State *L, const ContentFeatures &c)
 	lua_setfield(L, -2, "legacy_facedir_simple");
 	lua_pushboolean(L, c.legacy_wallmounted);
 	lua_setfield(L, -2, "legacy_wallmounted");
+	lua_pushstring(L, c.node_dig_prediction.c_str());
+	lua_setfield(L, -2, "node_dig_prediction");
 }
 
 /******************************************************************************/