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Added comments and made some small changes

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In get_drop_pos(): improved comments, added variation to drop positions and made it handle unloaded blocks in a new way.
This commit is contained in:
Phvli
2014-05-18 19:53:30 +03:00
parent 25d2c35101
commit 64c9a81264
1 changed files with 59 additions and 41 deletions
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36
technic/tools/chainsaw.lua
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@ -55,9 +55,9 @@ if( minetest.get_modpath("moretrees") ~= nil ) then
if chainsaw_leaves then
timber_nodenames["moretrees:apple_tree_leaves"] = true
timber_nodenames["moretrees:oak_leaves"] = true
timber_nodenames["moretrees:sequoia_leaves"] = true
timber_nodenames["moretrees:fir_leaves"] = true
timber_nodenames["moretrees:fir_leaves_bright"] = true
timber_nodenames["moretrees:sequoia_leaves"] = true
timber_nodenames["moretrees:birch_leaves"] = true
timber_nodenames["moretrees:birch_leaves"] = true
timber_nodenames["moretrees:palm_leaves"] = true
@ -203,20 +203,39 @@ local function recursive_dig(pos, remaining_charge, player)
return remaining_charge
end
-- Function to randomize positions for new node drops
local function get_drop_pos(pos)
local p, node
local drop_pos, node
repeat
p = {
-- Randomize position for a new drop
drop_pos = {
x = pos.x + math.random(-3, 3),
y = pos.y - 1,
z = pos.z + math.random(-3, 3)
}
-- Move the newly-randomized position upwards until there's
-- no node in it or an unloaded block is found
repeat
p.y = p.y + 1
node = minetest.get_node(p).name
until node == "air" or node == "ignore" -- Make sure drops wont appear inside ground
until p.y < pos.y + 5 -- Make sure the drops dont end up on a high ledge or column
return p
drop_pos.y = drop_pos.y + 1
node = minetest.get_node(drop_pos).name
if node == "ignore" then
-- On a rare chase where the block above the digging position is not
-- loaded yet, simply drop the nodes at the original digging position
return pos
end
until node == "air"
-- Make sure the drops will not end up too high on a tall ledge or a column
until drop_pos.y < pos.y + 5
-- Add some variation to the previously integer-only position
drop_pos.x = drop_pos.x + math.random() - .5
drop_pos.z = drop_pos.z + math.random() - .5
return drop_pos
end
-- Saw down trees entry point
@ -294,4 +313,3 @@ minetest.register_craft({
{'', '', 'default:copper_ingot'},
}
})