134 lines
3.7 KiB
Lua
134 lines
3.7 KiB
Lua
--[[
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Copyright (c) 2014, Robert 'Bobby' Zenz
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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--]]
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--- Various functions and constants for working with the wallmounted
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-- value.
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wallmountedutil = {
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--- Attached to the node in the negative x direction.
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NEGATIVE_X = 3,
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--- Attached to the node in the negative y direction.
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NEGATIVE_Y = 1,
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--- Attached to the node in the negative z direction.
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NEGATIVE_Z = 5,
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--- The vector for the negative x direction.
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NEGATIVE_X_VECTOR = {
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x = -1,
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y = 0,
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z = 0
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},
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--- The vector for the negative y direction.
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NEGATIVE_Y_VECTOR = {
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x = 0,
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y = -1,
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z = 0
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},
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--- The vector for the negative z direction.
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NEGATIVE_Z_VECTOR = {
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x = 0,
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y = 0,
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z = -1
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},
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--- Attached to the node in the positive y direction.
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POSITIVE_X = 2,
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--- Attached to the node in the positive y direction.
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POSITIVE_Y = 0,
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--- Attached to the node in the positive y direction.
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POSITIVE_Z = 4,
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--- The vector for the positive x direction.
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POSITIVE_X_VECTOR = {
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x = 1,
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y = 0,
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z = 0
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},
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--- The vector for the positive y direction.
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POSITIVE_Y_VECTOR = {
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x = 0,
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y = 1,
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z = 0
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},
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--- The vector for the positive z direction.
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POSITIVE_Z_VECTOR = {
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x = 0,
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y = 0,
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z = 1
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}
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}
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--- Gets the vector for the given ID.
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--
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-- @param id The ID for which to get the vector.
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-- @return The vector for the given ID.
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function wallmountedutil.get_vector(id)
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if id == wallmountedutil.NEGATIVE_X then
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return wallmountedutil.NEGATIVE_X_VECTOR
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elseif id == wallmountedutil.NEGATIVE_Y then
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return wallmountedutil.NEGATIVE_Y_VECTOR
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elseif id == wallmountedutil.NEGATIVE_Z then
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return wallmountedutil.NEGATIVE_Z_VECTOR
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elseif id == wallmountedutil.POSITIVE_X then
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return wallmountedutil.POSITIVE_X_VECTOR
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elseif id == wallmountedutil.POSITIVE_Y then
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return wallmountedutil.POSITIVE_Y_VECTOR
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elseif id == wallmountedutil.POSITIVE_Z then
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return wallmountedutil.POSITIVE_Z_VECTOR
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end
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return wallmountedutil.NEGATIVE_Y_VECTOR
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end
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--- Gets the corresponding facedir value for the given wallmounted value.
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--
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-- @param wallmounted_id The wallmounted value/ID.
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-- @return The facedir value/ID.
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function wallmountedutil.to_facedir(wallmounted_id)
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if wallmounted_id == wallmountedutil.NEGATIVE_X then
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return facedirutil.NEGATIVE_X
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elseif wallmounted_id == wallmountedutil.NEGATIVE_Z then
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return facedirutil.NEGATIVE_Z
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elseif wallmounted_id == wallmountedutil.POSITIVE_X then
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return facedirutil.POSITIVE_X
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elseif wallmounted_id == wallmountedutil.POSITIVE_Z then
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return facedirutil.POSITIVE_Z
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end
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return facedirutil.POSITIVE_X
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end
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