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Add check for unknown nodes.
* Check if node has a definition table before attempting to evaluate its attributes. By application of De Morgan's law, the compound logic expression can be rewritten so that the existence of the table is checked before all following attribute references.
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6a69f49fa0
commit
1326b9e7e7
@ -179,7 +179,7 @@ function mcl_structures.generate_igloo(pos, rotation, pr)
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real_depth = real_depth + 1
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real_depth = real_depth + 1
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local node = minetest.get_node({x=tpos.x,y=tpos.y-y,z=tpos.z})
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local node = minetest.get_node({x=tpos.x,y=tpos.y-y,z=tpos.z})
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local def = minetest.registered_nodes[node.name]
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local def = minetest.registered_nodes[node.name]
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if (not def) or (not def.walkable) or (def.liquidtype ~= "none") or (not def.is_ground_content) then
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if not (def and def.walkable and def.liquidtype == "none" and def.is_ground_content) then
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bpos.y = tpos.y-y+1
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bpos.y = tpos.y-y+1
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break
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break
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end
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end
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