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Allow nodes to specify which sides to connect to.

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NDT_CONNECTED attempts to connect to any side of nodes that it can
connect to, which is troublesome for FACEDIR type nodes that generally
may only have one usable face, and can be rotated.

We introduce a node parameter `connect_sides` that is valid for
any node type. If specified, it lists faces of the node (in "top",
"bottom", "front", "left", "back", "right", form, as array) that
connecting nodeboxes can connect to. "front" corresponds to the south
facing side of a node with facedir = 0.

If the node is rotatable using *simple* FACEDIR, then the attached
face is properly rotated before checking. This allows e.g. a chest
to be attached to only from the rear side.
This commit is contained in:
Auke Kok 2016-03-03 23:18:04 -08:00 • committed by ShadowNinja
parent e737b1c271
commit 37b4f0d34c
6 changed files with 58 additions and 5 deletions
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28
src/script/common/c_content.cpp
View file

@ -547,6 +547,34 @@ ContentFeatures read_content_features(lua_State *L, int index)
}
lua_pop(L, 1);
lua_getfield(L, index, "connect_sides");
if (lua_istable(L, -1)) {
int table = lua_gettop(L);
lua_pushnil(L);
while (lua_next(L, table) != 0) {
// Value at -1
std::string side(lua_tostring(L, -1));
// Note faces are flipped to make checking easier
if (side == "top")
f.connect_sides |= 2;
else if (side == "bottom")
f.connect_sides |= 1;
else if (side == "front")
f.connect_sides |= 16;
else if (side == "left")
f.connect_sides |= 32;
else if (side == "back")
f.connect_sides |= 4;
else if (side == "right")
f.connect_sides |= 8;
else
warningstream << "Unknown value for \"connect_sides\": "
<< side << std::endl;
lua_pop(L, 1);
}
}
lua_pop(L, 1);
lua_getfield(L, index, "selection_box");
if(lua_istable(L, -1))
f.selection_box = read_nodebox(L, -1);