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Line_of_sight: Improve using VoxelLineIterator

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This commit rewrites line_of_sight with VoxelLineIterator.
Stepsize is no longer needed, the results will be always accurate.
This commit is contained in:
Dániel Juhász 2016-12-01 20:15:37 +01:00 • committed by paramat
parent ca64f564cd
commit 2153965cf9
5 changed files with 27 additions and 35 deletions
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7
doc/lua_api.txt
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@ -2876,13 +2876,12 @@ and `minetest.auth_reload` call the authentication handler.
* parameter was absent)
* `minetest.delete_area(pos1, pos2)`
* delete all mapblocks in the area from pos1 to pos2, inclusive
* `minetest.line_of_sight(pos1, pos2, stepsize)`: returns `boolean, pos`
* Check if there is a direct line of sight between `pos1` and `pos2`
* `minetest.line_of_sight(pos1, pos2)`: returns `boolean, pos`
* Checks if there is anything other than air between pos1 and pos2.
* Returns false if something is blocking the sight.
* Returns the position of the blocking node when `false`
* `pos1`: First position
* `pos2`: Second position
* `stepsize`: smaller gives more accurate results but requires more computing
time. Default is `1`.
* `minetest.raycast(pos1, pos2, objects, liquids)`: returns `Raycast`
* Creates a `Raycast` object.
* `pos1`: start of the ray