diff options
| author | Anthony Zhang <azhang9@gmail.com> | 2012-08-18 00:51:20 -0400 |
|---|---|---|
| committer | Anthony Zhang <azhang9@gmail.com> | 2012-08-18 00:51:20 -0400 |
| commit | 66c7f1fb9620b083dc6acc60c5df64113ab4893f (patch) | |
| tree | 5e20e8fca89f7be9a46f010b116c16845db32106 /functions.lua | |
| parent | 87f23b86473eaba24503550584c5ea100b98fc5b (diff) | |
Add //hollowcylinder and //cylinder commands, add worldedit.hollow_cylinder and worldedit.cylinder API functions, document both, use better node validity check.
Diffstat (limited to 'functions.lua')
| -rw-r--r-- | functions.lua | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/functions.lua b/functions.lua index 625fafb..270b50e 100644 --- a/functions.lua +++ b/functions.lua @@ -72,6 +72,116 @@ worldedit.replace = function(pos1, pos2, searchnode, replacenode) return count
end
+--adds a hollow cylinder at `pos` along the `axis` axis ("x" or "y" or "z") with length `length` and radius `radius`, returning the number of nodes added
+worldedit.hollow_cylinder = function(pos, axis, length, radius, nodename)
+ local other1, other2
+ if axis == "x" then
+ other1, other2 = "y", "z"
+ elseif axis == "y" then
+ other1, other2 = "x", "z"
+ else --axis == "z"
+ other1, other2 = "x", "y"
+ end
+
+ local env = minetest.env
+ local currentpos = {x=pos.x, y=pos.y, z=pos.z}
+ local node = {name=nodename}
+ local count = 0
+ for i = 1, length do
+ local offset1, offset2 = 0, radius
+ local delta = -radius
+ while offset1 <= offset2 do
+ --add node at each octant
+ local first1, first2 = pos[other1] + offset1, pos[other1] - offset1
+ local second1, second2 = pos[other2] + offset2, pos[other2] - offset2
+ currentpos[other1], currentpos[other2] = first1, second1
+ env:add_node(currentpos, node) --octant 1
+ currentpos[other1] = first2
+ env:add_node(currentpos, node) --octant 4
+ currentpos[other2] = second2
+ env:add_node(currentpos, node) --octant 5
+ currentpos[other1] = first1
+ env:add_node(currentpos, node) --octant 8
+ local first1, first2 = pos[other1] + offset2, pos[other1] - offset2
+ local second1, second2 = pos[other2] + offset1, pos[other2] - offset1
+ currentpos[other1], currentpos[other2] = first1, second1
+ env:add_node(currentpos, node) --octant 2
+ currentpos[other1] = first2
+ env:add_node(currentpos, node) --octant 3
+ currentpos[other2] = second2
+ env:add_node(currentpos, node) --octant 6
+ currentpos[other1] = first1
+ env:add_node(currentpos, node) --octant 7
+
+ count = count + 8 --wip: broken
+
+ --move to next location
+ delta = delta + (offset1 * 2) + 1
+ if delta >= 0 then
+ offset2 = offset2 - 1
+ delta = delta - (offset2 * 2)
+ end
+ offset1 = offset1 + 1
+ end
+ currentpos[axis] = currentpos[axis] + 1
+ end
+ return count
+end
+
+--adds a cylinder at `pos` along the `axis` axis ("x" or "y" or "z") with length `length` and radius `radius`, returning the number of nodes added
+worldedit.cylinder = function(pos, axis, length, radius, nodename)
+ local other1, other2
+ if axis == "x" then
+ other1, other2 = "y", "z"
+ elseif axis == "y" then
+ other1, other2 = "x", "z"
+ else --axis == "z"
+ other1, other2 = "x", "y"
+ end
+
+ local env = minetest.env
+ local currentpos = {x=pos.x, y=pos.y, z=pos.z}
+ local node = {name=nodename}
+ local count = 0
+ for i = 1, length do
+ local offset1, offset2 = 0, radius
+ local delta = -radius
+ while offset1 <= offset2 do
+ --connect each pair of octants
+ currentpos[other1] = pos[other1] - offset1
+ local second1, second2 = pos[other2] + offset2, pos[other2] - offset2
+ for i = 0, offset1 * 2 do
+ currentpos[other2] = second1
+ env:add_node(currentpos, node) --octant 1 to 4
+ currentpos[other2] = second2
+ env:add_node(currentpos, node) --octant 5 to 8
+ currentpos[other1] = currentpos[other1] + 1
+ end
+ currentpos[other1] = pos[other1] - offset2
+ local second1, second2 = pos[other2] + offset1, pos[other2] - offset1
+ for i = 0, offset2 * 2 do
+ currentpos[other2] = second1
+ env:add_node(currentpos, node) --octant 2 to 3
+ currentpos[other2] = second2
+ env:add_node(currentpos, node) --octant 6 to 7
+ currentpos[other1] = currentpos[other1] + 1
+ end
+
+ count = count + (offset1 * 4) + (offset2 * 4) + 4 --wip: broken
+
+ --move to next location
+ delta = delta + (offset1 * 2) + 1
+ offset1 = offset1 + 1
+ if delta >= 0 then
+ offset2 = offset2 - 1
+ delta = delta - (offset2 * 2)
+ end
+ end
+ currentpos[axis] = currentpos[axis] + 1
+ end
+ return count
+end
+
--copies the region defined by positions `pos1` and `pos2` along the `axis` axis ("x" or "y" or "z") by `amount` nodes, returning the number of nodes copied
worldedit.copy = function(pos1, pos2, axis, amount)
local pos1, pos2 = worldedit.sort_pos(pos1, pos2)
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