-- Configuration
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local chainsaw_max_charge = 30000 -- Maximum charge of the saw
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-- Gives 2500 nodes on a single charge (about 50 complete normal trees)
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local chainsaw_charge_per_node = 12
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-- Cut down tree leaves. Leaf decay may cause slowness on large trees
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-- if this is disabled.
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local chainsaw_leaves = true
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-- The default trees
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local timber_nodenames = {
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["default:jungletree"] = true,
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["default:papyrus"] = true,
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["default:cactus"] = true,
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["default:tree"] = true,
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["default:apple"] = true,
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}
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if chainsaw_leaves then
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timber_nodenames["default:leaves"] = true
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timber_nodenames["default:jungleleaves"] = true
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end
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-- technic_worldgen defines rubber trees if moretrees isn't installed
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if minetest.get_modpath("technic_worldgen") or
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minetest.get_modpath("moretrees") then
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timber_nodenames["moretrees:rubber_tree_trunk_empty"] = true
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timber_nodenames["moretrees:rubber_tree_trunk"] = true
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if chainsaw_leaves then
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timber_nodenames["moretrees:rubber_tree_leaves"] = true
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end
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end
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-- Support moretrees if it is there
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if minetest.get_modpath("moretrees") then
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timber_nodenames["moretrees:apple_tree_trunk"] = true
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timber_nodenames["moretrees:apple_tree_trunk_sideways"] = true
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timber_nodenames["moretrees:beech_trunk"] = true
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timber_nodenames["moretrees:beech_trunk_sideways"] = true
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timber_nodenames["moretrees:birch_trunk"] = true
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timber_nodenames["moretrees:birch_trunk_sideways"] = true
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timber_nodenames["moretrees:fir_trunk"] = true
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timber_nodenames["moretrees:fir_trunk_sideways"] = true
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timber_nodenames["moretrees:oak_trunk"] = true
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timber_nodenames["moretrees:oak_trunk_sideways"] = true
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timber_nodenames["moretrees:palm_trunk"] = true
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timber_nodenames["moretrees:palm_trunk_sideways"] = true
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timber_nodenames["moretrees:pine_trunk"] = true
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timber_nodenames["moretrees:pine_trunk_sideways"] = true
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timber_nodenames["moretrees:rubber_tree_trunk_sideways"] = true
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timber_nodenames["moretrees:rubber_tree_trunk_sideways_empty"] = true
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timber_nodenames["moretrees:sequoia_trunk"] = true
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timber_nodenames["moretrees:sequoia_trunk_sideways"] = true
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timber_nodenames["moretrees:spruce_trunk"] = true
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timber_nodenames["moretrees:spruce_trunk_sideways"] = true
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timber_nodenames["moretrees:willow_trunk"] = true
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timber_nodenames["moretrees:willow_trunk_sideways"] = true
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timber_nodenames["moretrees:jungletree_trunk"] = true
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timber_nodenames["moretrees:jungletree_trunk_sideways"] = true
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if chainsaw_leaves then
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timber_nodenames["moretrees:apple_tree_leaves"] = true
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timber_nodenames["moretrees:oak_leaves"] = true
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timber_nodenames["moretrees:fir_leaves"] = true
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timber_nodenames["moretrees:fir_leaves_bright"] = true
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timber_nodenames["moretrees:sequoia_leaves"] = true
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timber_nodenames["moretrees:birch_leaves"] = true
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timber_nodenames["moretrees:birch_leaves"] = true
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timber_nodenames["moretrees:palm_leaves"] = true
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timber_nodenames["moretrees:spruce_leaves"] = true
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timber_nodenames["moretrees:spruce_leaves"] = true
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timber_nodenames["moretrees:pine_leaves"] = true
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timber_nodenames["moretrees:willow_leaves"] = true
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timber_nodenames["moretrees:jungletree_leaves_green"] = true
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timber_nodenames["moretrees:jungletree_leaves_yellow"] = true
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timber_nodenames["moretrees:jungletree_leaves_red"] = true
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end
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end
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-- Support growing_trees
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if minetest.get_modpath("growing_trees") then
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timber_nodenames["growing_trees:trunk"] = true
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timber_nodenames["growing_trees:medium_trunk"] = true
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timber_nodenames["growing_trees:big_trunk"] = true
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timber_nodenames["growing_trees:trunk_top"] = true
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timber_nodenames["growing_trees:trunk_sprout"] = true
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timber_nodenames["growing_trees:branch_sprout"] = true
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timber_nodenames["growing_trees:branch"] = true
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timber_nodenames["growing_trees:branch_xmzm"] = true
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timber_nodenames["growing_trees:branch_xpzm"] = true
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timber_nodenames["growing_trees:branch_xmzp"] = true
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timber_nodenames["growing_trees:branch_xpzp"] = true
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timber_nodenames["growing_trees:branch_zz"] = true
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timber_nodenames["growing_trees:branch_xx"] = true
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if chainsaw_leaves then
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timber_nodenames["growing_trees:leaves"] = true
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end
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end
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-- Support growing_cactus
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if minetest.get_modpath("growing_cactus") then
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timber_nodenames["growing_cactus:sprout"] = true
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timber_nodenames["growing_cactus:branch_sprout_vertical"] = true
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timber_nodenames["growing_cactus:branch_sprout_vertical_fixed"] = true
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timber_nodenames["growing_cactus:branch_sprout_xp"] = true
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timber_nodenames["growing_cactus:branch_sprout_xm"] = true
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timber_nodenames["growing_cactus:branch_sprout_zp"] = true
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timber_nodenames["growing_cactus:branch_sprout_zm"] = true
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timber_nodenames["growing_cactus:trunk"] = true
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timber_nodenames["growing_cactus:branch_trunk"] = true
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timber_nodenames["growing_cactus:branch"] = true
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timber_nodenames["growing_cactus:branch_xp"] = true
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timber_nodenames["growing_cactus:branch_xm"] = true
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timber_nodenames["growing_cactus:branch_zp"] = true
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timber_nodenames["growing_cactus:branch_zm"] = true
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timber_nodenames["growing_cactus:branch_zz"] = true
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timber_nodenames["growing_cactus:branch_xx"] = true
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end
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-- Support farming_plus
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if minetest.get_modpath("farming_plus") then
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if chainsaw_leaves then
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timber_nodenames["farming_plus:cocoa_leaves"] = true
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end
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end
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local S = technic.getter
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technic.register_power_tool("technic:chainsaw", chainsaw_max_charge)
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-- Table for saving what was sawed down
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local produced = {}
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-- Save the items sawed down so that we can drop them in a nice single stack
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local function handle_drops(drops)
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for _, item in ipairs(drops) do
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local stack = ItemStack(item)
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local name = stack:get_name()
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local p = produced[name]
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if not p then
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produced[name] = stack
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else
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p:set_count(p:get_count() + stack:get_count())
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end
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end
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end
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--- Iterator over positions to try to saw around a sawed node.
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-- This returns nodes in a 3x2x3 area. It does not return lower (y) positions
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-- to prevent the chainsaw from cutting down nodes below the cutting position.
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-- @param pos Reference to sawing position. Note that this is overridden.
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local function iterSawTries(pos)
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-- Shift the position down on the x and z axes
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pos.x, pos.z = pos.x - 1, pos.z - 1
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-- Save our starting position for reseting it later
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local startx, startz = pos.x, pos.z
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-- We will move out by one in every direction except -y
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local endx, endy, endz = pos.x + 2, pos.y + 1, pos.z + 2
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-- Adjust for initial increment
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pos.x = pos.x - 1
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return function()
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if pos.x < endx then
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pos.x = pos.x + 1
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else
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pos.x = startx
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if pos.z < endz then
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pos.z = pos.z + 1
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else
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pos.z = startz
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if pos.y < endy then
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pos.y = pos.y + 1
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else
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return nil
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end
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end
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end
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return pos
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end
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end
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-- This function does all the hard work. Recursively we dig the node at hand
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-- if it is in the table and then search the surroundings for more stuff to dig.
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local function recursive_dig(pos, remaining_charge)
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if remaining_charge < chainsaw_charge_per_node then
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return remaining_charge
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end
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local node = minetest.get_node(pos)
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if not timber_nodenames[node.name] then
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return remaining_charge
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end
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-- wood found - cut it
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handle_drops(minetest.get_node_drops(node.name, ""))
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minetest.remove_node(pos)
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remaining_charge = remaining_charge - chainsaw_charge_per_node
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-- Check surroundings and run recursively if any charge left
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for pos in iterSawTries(pos) do
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if remaining_charge < chainsaw_charge_per_node then
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break
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end
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if timber_nodenames[minetest.get_node(pos).name] then
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remaining_charge = recursive_dig(pos, remaining_charge)
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end
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end
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return remaining_charge
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end
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-- Function to randomize positions for new node drops
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local function get_drop_pos(pos)
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local drop_pos = {}
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for i = 0, 8 do
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-- Randomize position for a new drop
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drop_pos.x = pos.x + math.random(-3, 3)
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drop_pos.y = pos.y - 1
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drop_pos.z = pos.z + math.random(-3, 3)
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-- Move the randomized position upwards until
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-- the node is air or unloaded.
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for y = drop_pos.y, drop_pos.y + 5 do
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drop_pos.y = y
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local node = minetest.get_node_or_nil(drop_pos)
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if not node then
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-- If the node is not loaded yet simply drop
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-- the item at the original digging position.
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return pos
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elseif node.name == "air" then
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-- Add variation to the entity drop position,
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-- but don't let drops get too close to the edge
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drop_pos.x = drop_pos.x + (math.random() * 0.8) - 0.5
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drop_pos.z = drop_pos.z + (math.random() * 0.8) - 0.5
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return drop_pos
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end
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end
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end
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-- Return the original position if this takes too long
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return pos
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end
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-- Chainsaw entry point
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local function chainsaw_dig(pos, current_charge)
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-- Start sawing things down
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local remaining_charge = recursive_dig(pos, current_charge)
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minetest.sound_play("chainsaw", {pos = pos, gain = 1.0,
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max_hear_distance = 10})
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-- Now drop items for the player
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for name, stack in pairs(produced) do
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-- Drop stacks of stack max or less
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local count, max = stack:get_count(), stack:get_stack_max()
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stack:set_count(max)
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while count > max do
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minetest.add_item(get_drop_pos(pos), stack)
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count = count - max
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end
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stack:set_count(count)
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minetest.add_item(get_drop_pos(pos), stack)
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end
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-- Clean up
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produced = {}
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return remaining_charge
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end
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minetest.register_tool("technic:chainsaw", {
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description = S("Chainsaw"),
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inventory_image = "technic_chainsaw.png",
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stack_max = 1,
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wear_represents = "technic_RE_charge",
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on_refill = technic.refill_RE_charge,
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on_use = function(itemstack, user, pointed_thing)
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if pointed_thing.type ~= "node" then
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return itemstack
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end
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local meta = minetest.deserialize(itemstack:get_metadata())
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if not meta or not meta.charge or
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meta.charge < chainsaw_charge_per_node then
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return
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end
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local name = user:get_player_name()
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if minetest.is_protected(pointed_thing.under, name) then
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minetest.record_protection_violation(pointed_thing.under, name)
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return
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end
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-- Send current charge to digging function so that the
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-- chainsaw will stop after digging a number of nodes
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meta.charge = chainsaw_dig(pointed_thing.under, meta.charge)
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technic.set_RE_wear(itemstack, meta.charge, chainsaw_max_charge)
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itemstack:set_metadata(minetest.serialize(meta))
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return itemstack
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end,
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})
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minetest.register_craft({
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output = "technic:chainsaw",
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recipe = {
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{"technic:stainless_steel_ingot", "technic:stainless_steel_ingot", "technic:battery"},
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{"technic:stainless_steel_ingot", "technic:motor", "technic:battery"},
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{"", "", "default:copper_ingot"},
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}
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})
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