Sokomine/trees_lib
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added support for other return values for can_grow so that growing can be delayed instead of denied

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Sokomine 2015-10-23 00:55:06 +02:00
parent 3992ef43e3
commit ffb6bb1847
1 changed files with 10 additions and 5 deletions
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15
trees_lib.lua
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@ -468,9 +468,12 @@ trees_lib.tree_abm_called = function( pos, node, active_object_count, active_obj
-- the tree may come with a more complex function that checks if it can grow there -- the tree may come with a more complex function that checks if it can grow there
if( not(force_grow) and sapling_data.can_grow and type( sapling_data.can_grow)=="function" ) then if( not(force_grow) and sapling_data.can_grow and type( sapling_data.can_grow)=="function" ) then
-- the parameter ground_found is nil if the tree did not specify any demands for a particular ground -- the parameter ground_found is nil if the tree did not specify any demands for a particular ground
if( not( sapling_data.can_grow( pos, node, ground_found ))) then local ret = sapling_data.can_grow( pos, node, ground_found );
-- trun into dry shrub if( ret < 1 ) then
trees_lib.failed_to_grow( pos, node, ground_found ); -- trun into dry shrub if growing failed finally (and was not just delayed)
if( ret==0 ) then
trees_lib.failed_to_grow( pos, node, ground_found );
end
return; return;
end end
end end
@ -609,7 +612,9 @@ trees_lib.register_tree = function( tree_name, nodes, growing_methods, grows_on_
-- are all the requirements met for growing at pos? -- are all the requirements met for growing at pos?
-- sapling will only grow if -- sapling will only grow if
-- growing.can_grow( pos, node, ground_found ) -- growing.can_grow( pos, node, ground_found )
-- returns true -- returns a value >0; if 0 is returned, the sapling will fail to grow
-- and be turned into dry shrub; if a value <0 is returned, nothing will
-- happen (the sapling can try again later on)
-- (usful for i.e. requiring water nearby, or other -- (usful for i.e. requiring water nearby, or other
-- more complex requirements) -- more complex requirements)
can_grow = can_grow_function, can_grow = can_grow_function,
@ -637,7 +642,7 @@ trees_lib.register_tree = function( tree_name, nodes, growing_methods, grows_on_
interval = 10; interval = 10;
end end
if( not( chance )) then if( not( chance )) then
chance = 1; chance = 50;
end end
-- now add the abm that lets the tree grow -- now add the abm that lets the tree grow
minetest.register_abm({ minetest.register_abm({