Skip to content
Permalink
Browse files
Add initial code for worldedit_infinity.
  • Loading branch information
Uberi committed Aug 6, 2013
1 parent 03327a7 commit 4c43bf36001e1b7982e20ad1ab0d2dd3926fc406
Showing 1 changed file with 102 additions and 0 deletions.
@@ -0,0 +1,102 @@
worldedit = worldedit or {}

local get_pointed = function(pos, nearest, distance)
if distance > 100 then
return false
end

--check for collision with node
local nodename = env:get_node(pos).name
if nodename ~= "air"
and nodename ~= "default:water_source"
and nodename ~= "default:water_flowing" then
if nodename ~= "ignore" then
return nearest
end
return false
end
end

local use = function(itemstack, user, pointed_thing)
if pointed_thing.type == "nothing" then --pointing at nothing
local placepos = worldedit.raytrace(user:getpos(), user:get_look_dir(), get_pointed)
if placepos then --extended reach
pointed_thing.type = "node"
pointed_thing.under = nil --wip
pointed_thing.above = nil --wip
end
end
return minetest.item_place_node(itemstack, user, pointed_thing)
end
--

worldedit.raytrace = function(pos, dir, callback)
local base = {x=math.floor(pos.x), y=math.floor(pos.y), z=math.floor(pos.z)}
local stepx, stepy, stepz = 0, 0, 0
local componentx, componenty, componentz = 0, 0, 0
local intersectx, intersecty, intersectz = 0, 0, 0

if dir.x == 0 then
intersectx = math.huge
elseif dir.x > 0 then
stepx = 1
componentx = 1 / dir.x
intersectx = ((base.x - pos.x) + 1) * componentx
else
stepx = -1
componentx = 1 / -dir.x
intersectx = (pos.x - base.x) * componentx
end
if dir.y == 0 then
intersecty = math.huge
elseif dir.y > 0 then
stepy = 1
componenty = 1 / dir.y
intersecty = ((base.y - pos.y) + 1) * componenty
else
stepy = -1
componenty = 1 / -dir.y
intersecty = (pos.y - base.y) * componenty
end
if dir.z == 0 then
intersectz = math.huge
elseif dir.z > 0 then
stepz = 1
componentz = 1 / dir.z
intersectz = ((base.z - pos.z) + 1) * componentz
else
stepz = -1
componentz = 1 / -dir.z
intersectz = (pos.z - base.z) * componentz
end

local distance = 0
local nearest = {x=base.x, y=base.y, z=base.z}
while true do
local values = {callback(base, nearest, distance)}
if #values > 0 then
return unpack(values)
end

nearest.x, nearest.y, nearest.z = base.x, base.y, base.z
if intersectx < intersecty then
if intersectx < intersectz then
base.x = base.x + stepx
distance = intersectx
intersectx = intersectx + componentx
else
base.z = base.z + stepz
distance = intersectz
intersectz = intersectz + componentz
end
elseif intersecty < intersectz then
base.y = base.y + stepy
distance = intersecty
intersecty = intersecty + componenty
else
base.z = base.z + stepz
distance = intersectz
intersectz = intersectz + componentz
end
end
end

2 comments on commit 4c43bf3

@Jordach
Copy link

@Jordach Jordach commented on 4c43bf3 Aug 6, 2013

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

WTF is this?

@Uberi
Copy link
Owner Author

@Uberi Uberi commented on 4c43bf3 Aug 6, 2013

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

The code is pretty self explanatory. Documentation will be written sometime in the future.

Please sign in to comment.