56 lines
1.8 KiB
Lua
56 lines
1.8 KiB
Lua
local wea = worldeditadditions
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local Vector3 = dofile(wea.modpath.."/utils/vector3.lua")
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-- BUG: This does not exist yet - need to merge @VorTechnix's branch first to get it
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-- TODO: Uncomment then once it's implemented
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-- local parse_axis = dofile(wea.modpath.."/utils/axis.lua")
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--- Parses a token list of axes and counts into a Vector3.
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-- For example, "x 4" would become { x = 4, y = 0, z = 0 }, and "? 4 -z 10"
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-- might become { x = 4, y = 0, z = -10 }.
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-- Note that the input here needs to be *pre split*. wea.split_shell is
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-- recommended for this purpose.
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-- Uses wea.parse.axis for parsing axis names.
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-- @param token_list string[] A list of tokens to parse
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-- @returns Vector3 A Vector3 generated from parsing out the input token list.
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local function parse_axes(token_list)
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local vector_result = wea.Vector3.new()
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if #token_list < 2 then
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return false, "Error: Not enough arguments (at least 2 are required)"
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end
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local state = "AXIS"
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local current_axis = nil
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local success
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for i,token in ipairs(token_list) do
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if state == "AXIS" then
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success, current_axis = parse_axis(token)
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if not success then return success, current_axis end
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state = "VALUE"
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elseif state == "VALUE" then
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local offset_this = tonumber(token)
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if not offset_this then
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return false, "Error: Invalid count value for axis '"..current_axis.."'. Values may only be positive or negative integers."
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end
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-- Handle negative axes
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if current_axis:sub(1, 1) == "-" then
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offset_this = -offset_this
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current_axis = current_axis:sub(2, 2)
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end
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vector_result[current_axis] = vector_result[current_axis] + offset_this
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state = "AXIS"
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else
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return false, "Error: Failed to parse input due to unknown state '"..tostring(state).."' (this is probably a bug - please report it!)"
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end
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end
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return vector_result
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end
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return parse_axes
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