mirror of
https://github.com/minetest-mods/technic.git
synced 2024-09-12 08:18:30 +02:00
Changes: * Make rayIter a global utility, and use it for radiation too. * prettynum -> pretty_num and cleanup. * Remove resolve_name/function_exists (unused). * Cleanup nuclear reactor code.
127 lines
3.0 KiB
Lua
127 lines
3.0 KiB
Lua
local digit_sep_esc
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do
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local sep = technic.config:get("digit_separator")
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sep = tonumber(sep) and string.char(sep) or sep or " "
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-- Escape for gsub
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for magic in ("().%+-*?[^$"):gmatch(".") do
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if sep == magic then
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sep = "%"..sep
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end
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end
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digit_sep_esc = sep
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end
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function technic.pretty_num(num)
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local str, k = tostring(num), nil
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repeat
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str, k = str:gsub("^(-?%d+)(%d%d%d)", "%1"..digit_sep_esc.."%2")
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until k == 0
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return str
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end
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--- Same as minetest.swap_node, but only changes name
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-- and doesn't re-set if already set.
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function technic.swap_node(pos, name)
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local node = minetest.get_node(pos)
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if node.name ~= name then
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node.name = name
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minetest.swap_node(pos, node)
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end
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end
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--- Fully charge RE chargeable item.
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-- Must be defined early to reference in item definitions.
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function technic.refill_RE_charge(stack)
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local max_charge = technic.power_tools[stack:get_name()]
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if not max_charge then return stack end
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technic.set_RE_wear(stack, max_charge, max_charge)
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local meta = minetest.deserialize(stack:get_metadata()) or {}
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meta.charge = max_charge
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stack:set_metadata(minetest.serialize(meta))
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return stack
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end
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-- If the node is loaded, returns it. If it isn't loaded, load it and return nil.
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function technic.get_or_load_node(pos)
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local node = minetest.get_node_or_nil(pos)
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if node then return node end
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local vm = VoxelManip()
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local MinEdge, MaxEdge = vm:read_from_map(pos, pos)
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return nil
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end
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technic.tube_inject_item = pipeworks.tube_inject_item or function(pos, start_pos, velocity, item)
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local tubed = pipeworks.tube_item(vector.new(pos), item)
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tubed:get_luaentity().start_pos = vector.new(start_pos)
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tubed:setvelocity(velocity)
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tubed:setacceleration(vector.new(0, 0, 0))
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end
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-- Based on code by Uberi: https://gist.github.com/Uberi/3125280
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function technic.trace_node_ray(pos, dir, range)
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local p = vector.round(pos)
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local x_step, y_step, z_step = 0, 0, 0
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local x_component, y_component, z_component = 0, 0, 0
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local x_intersect, y_intersect, z_intersect = 0, 0, 0
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if dir.x == 0 then
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x_intersect = math.huge
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elseif dir.x > 0 then
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x_step = 1
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x_component = 1 / dir.x
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x_intersect = x_component
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else
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x_step = -1
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x_component = 1 / -dir.x
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end
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if dir.y == 0 then
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y_intersect = math.huge
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elseif dir.y > 0 then
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y_step = 1
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y_component = 1 / dir.y
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y_intersect = y_component
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else
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y_step = -1
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y_component = 1 / -dir.y
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end
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if dir.z == 0 then
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z_intersect = math.huge
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elseif dir.z > 0 then
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z_step = 1
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z_component = 1 / dir.z
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z_intersect = z_component
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else
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z_step = -1
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z_component = 1 / -dir.z
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end
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return function()
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if x_intersect < y_intersect then
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if x_intersect < z_intersect then
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p.x = p.x + x_step
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x_intersect = x_intersect + x_component
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else
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p.z = p.z + z_step
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z_intersect = z_intersect + z_component
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end
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elseif y_intersect < z_intersect then
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p.y = p.y + y_step
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y_intersect = y_intersect + y_component
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else
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p.z = p.z + z_step
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z_intersect = z_intersect + z_component
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end
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if vector.distance(pos, p) > range then
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return nil
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end
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return p
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end
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end
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