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Added support to return all results by find_pointed_thing

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This commit is contained in:
Diego Martínez 2013-04-23 23:03:16 -03:00
parent 1c08a8bc32
commit 1c72447d64
1 changed files with 26 additions and 4 deletions
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30
kutils/init.lua
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@ -46,6 +46,9 @@ kutils.ignore_ents = {
| If false, the ray takes not walkable nodes (e.g. lava) as solid. Air | If false, the ray takes not walkable nodes (e.g. lava) as solid. Air
| and water are always taken as not solid. | and water are always taken as not solid.
| |
| return_all (optional)
| If true, the function returns all nodes found by the ray.
|
| Return value: | Return value:
| If a node is hit by the ray, returns a table with `pos' and `node' | If a node is hit by the ray, returns a table with `pos' and `node'
| fields. `pos' is the position where collision occurred, and `node' is | fields. `pos' is the position where collision occurred, and `node' is
@ -54,6 +57,8 @@ kutils.ignore_ents = {
| fields. `pos' is as above, `entity' is an ObjectRef. | fields. `pos' is as above, `entity' is an ObjectRef.
| If nothing is found, returns nil. Note that unloaded blocks are actual | If nothing is found, returns nil. Note that unloaded blocks are actual
| nodes! (check for node.name == "ignore" if you want to distinguish). | nodes! (check for node.name == "ignore" if you want to distinguish).
| Also note that if `params.return_all' is true, it will return an array
| where the items are in this format.
]] ]]
function kutils.find_pointed_thing ( params ) function kutils.find_pointed_thing ( params )
local p = {x=params.pos.x, y=params.pos.y, z=params.pos.z}; local p = {x=params.pos.x, y=params.pos.y, z=params.pos.z};
@ -62,16 +67,26 @@ function kutils.find_pointed_thing ( params )
local extra_ignore_ents = params.ignore_ents or { }; local extra_ignore_ents = params.ignore_ents or { };
local range = params.range; local range = params.range;
local solid_only = params.solid_only; local solid_only = params.solid_only;
local list = { };
local listn = 1;
for n = 0, range do for n = 0, range do
local node = minetest.env:get_node(p); local node = minetest.env:get_node(p);
if (not kutils.ignore_nodes[node.name]) then if (not kutils.ignore_nodes[node.name]) then
if (solid_only) then if (solid_only) then
local walkable = minetest.registered_nodes[node.name].walkable; local walkable = minetest.registered_nodes[node.name].walkable;
if ((walkable == nil) or (walkable == true)) then if ((walkable == nil) or (walkable == true)) then
return {pos = p; node=node}; if (not return_all) then
return {pos = p; node=node};
end
list[listn] = {pos = p; node=node};
listn = listn + 1;
end end
else else
return {pos = p; node=node}; if (not return_all) then
return {pos = p; node=node};
end
list[listn] = {pos = p; node=node};
listn = listn + 1;
end end
end end
local ents = minetest.env:get_objects_inside_radius(p, radius); local ents = minetest.env:get_objects_inside_radius(p, radius);
@ -79,7 +94,11 @@ function kutils.find_pointed_thing ( params )
for _,e in ipairs(ents) do for _,e in ipairs(ents) do
if ((e ~= params.user) and (not kutils.ignore_ents[e:get_entity_name()]) if ((e ~= params.user) and (not kutils.ignore_ents[e:get_entity_name()])
and (not extra_ignore_ents[e:get_entity_name()])) then and (not extra_ignore_ents[e:get_entity_name()])) then
return {pos=p; entity=e}; if (not return_all) then
return {pos=p; entity=e};
end
list[listn] = {pos = p; entity=e};
listn = listn + 1;
end end
end end
end end
@ -87,7 +106,10 @@ function kutils.find_pointed_thing ( params )
p.y = p.y + dy; p.y = p.y + dy;
p.z = p.z + dz; p.z = p.z + dz;
end end
-- return nil; if (listn > 1) then
return list;
end
return nil;
end end
minetest.register_craftitem("dt_util:test", { minetest.register_craftitem("dt_util:test", {