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MineClone2/mods/MAPGEN/mcl_villages/utils.lua

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local get_node = mcl_vars.get_node
-------------------------------------------------------------------------------
-- function to copy tables
-------------------------------------------------------------------------------
function settlements.shallowCopy(original)
local copy = {}
for key, value in pairs(original) do
copy[key] = value
end
return copy
end
--
--
--
function settlements.round(num, numDecimalPlaces)
local mult = 10^(numDecimalPlaces or 0)
return math.floor(num * mult + 0.5) / mult
end
-------------------------------------------------------------------------------
-- function to find surface block y coordinate
-- returns surface postion
-------------------------------------------------------------------------------
function settlements.find_surface(pos, wait)
local p6 = vector.new(pos)
local cnt = 0
local itter = 1 -- count up or down
local cnt_max = 200
-- check, in which direction to look for surface
local surface_node
if wait then
surface_node = get_node(p6, true, 10000000)
else
surface_node = get_node(p6)
end
if surface_node.name=="air" or surface_node.name=="ignore" then
itter = -1
end
-- go through nodes an find surface
while cnt < cnt_max do
-- Check Surface_node and Node above
if surface_node and settlements.surface_mat[surface_node.name] then
local surface_node_plus_1 = get_node({ x=p6.x, y=p6.y+1, z=p6.z})
if surface_node_plus_1 then
local surface_node_minus_1 = get_node({ x=p6.x, y=p6.y-1, z=p6.z})
local is_leaf_below = minetest.get_item_group(surface_node_minus_1, "leaves") ~= 0 or
string.find(surface_node_minus_1.name,"leaves")
if not is_leaf_below and ((string.find(surface_node_plus_1.name,"air") or
string.find(surface_node_plus_1.name,"fern") or
string.find(surface_node_plus_1.name,"flower") or
string.find(surface_node_plus_1.name,"bush") or
string.find(surface_node_plus_1.name,"tree") or
string.find(surface_node_plus_1.name,"grass")) or
string.find(surface_node_plus_1.name,"snow"))
then
settlements.debug("find_surface success: " ..surface_node.name.. " " .. surface_node_plus_1.name)
settlements.debug("node below: " .. tostring(surface_node_minus_1.name))
settlements.debug("node below leaves group: " .. tostring(minetest.get_item_group(surface_node_minus_1, "leaves")))
return p6, surface_node.name
else
settlements.debug("find_surface2: wrong surface+1")
end
else
settlements.debug("find_surface8: missing node or plus_1")
end
else
settlements.debug("find_surface3: wrong surface "..surface_node.name.." at pos "..minetest.pos_to_string(p6))
end
p6.y = p6.y + itter
if p6.y < 0 then
settlements.debug("find_surface4: y<0")
return nil
end
cnt = cnt+1
surface_node = get_node(p6)
end
settlements.debug("find_surface5: cnt_max overflow")
return nil
end
-------------------------------------------------------------------------------
-- check distance for new building
-------------------------------------------------------------------------------
function settlements.check_distance(settlement_info, building_pos, building_size)
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local distance
for i, built_house in ipairs(settlement_info) do
distance = math.sqrt(
((building_pos.x - built_house["pos"].x)*(building_pos.x - built_house["pos"].x))+
((building_pos.z - built_house["pos"].z)*(building_pos.z - built_house["pos"].z)))
if distance < building_size or distance < built_house["hsize"] then
return false
end
end
return true
end
-------------------------------------------------------------------------------
-- fill chests
-------------------------------------------------------------------------------
function settlements.fill_chest(pos, pr)
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-- initialize chest (mts chests don't have meta)
local meta = minetest.get_meta(pos)
if meta:get_string("infotext") ~= "Chest" then
-- For MineClone2 0.70 or before
-- minetest.registered_nodes["mcl_chests:chest"].on_construct(pos)
--
-- For MineClone2 after commit 09ab1482b5 (the new entity chests)
minetest.registered_nodes["mcl_chests:chest_small"].on_construct(pos)
end
-- fill chest
local inv = minetest.get_inventory( {type="node", pos=pos} )
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local function get_treasures(prand)
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local loottable = {{
stacks_min = 3,
stacks_max = 8,
items = {
{ itemstring = "mcl_core:diamond", weight = 3, amount_min = 1, amount_max = 3 },
{ itemstring = "mcl_core:iron_ingot", weight = 10, amount_min = 1, amount_max = 5 },
{ itemstring = "mcl_core:gold_ingot", weight = 5, amount_min = 1, amount_max = 3 },
{ itemstring = "mcl_farming:bread", weight = 15, amount_min = 1, amount_max = 3 },
{ itemstring = "mcl_core:apple", weight = 15, amount_min = 1, amount_max = 3 },
{ itemstring = "mcl_tools:pick_iron", weight = 5 },
{ itemstring = "mcl_tools:sword_iron", weight = 5 },
{ itemstring = "mcl_armor:chestplate_iron", weight = 5 },
{ itemstring = "mcl_armor:helmet_iron", weight = 5 },
{ itemstring = "mcl_armor:leggings_iron", weight = 5 },
{ itemstring = "mcl_armor:boots_iron", weight = 5 },
{ itemstring = "mcl_core:obsidian", weight = 5, amount_min = 3, amount_max = 7 },
{ itemstring = "mcl_core:sapling", weight = 5, amount_min = 3, amount_max = 7 },
{ itemstring = "mcl_mobitems:saddle", weight = 3 },
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{ itemstring = "mcl_mobitems:iron_horse_armor", weight = 1 },
{ itemstring = "mcl_mobitems:gold_horse_armor", weight = 1 },
{ itemstring = "mcl_mobitems:diamond_horse_armor", weight = 1 },
}
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}}
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local items = mcl_loot.get_multi_loot(loottable, prand)
return items
end
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local items = get_treasures(pr)
mcl_loot.fill_inventory(inv, "main", items, pr)
end
-------------------------------------------------------------------------------
-- initialize furnace
-------------------------------------------------------------------------------
function settlements.initialize_furnace(pos)
-- find chests within radius
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local furnacepos = minetest.find_node_near(pos,
7, --radius
{"mcl_furnaces:furnace"})
-- initialize furnacepos (mts furnacepos don't have meta)
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if furnacepos
then
local meta = minetest.get_meta(furnacepos)
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if meta:get_string("infotext") ~= "furnace"
then
minetest.registered_nodes["mcl_furnaces:furnace"].on_construct(furnacepos)
end
end
end
-------------------------------------------------------------------------------
-- initialize anvil
-------------------------------------------------------------------------------
function settlements.initialize_anvil(pos)
-- find chests within radius
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local anvilpos = minetest.find_node_near(pos,
7, --radius
{"mcl_anvils:anvil"})
-- initialize anvilpos (mts anvilpos don't have meta)
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if anvilpos
then
local meta = minetest.get_meta(anvilpos)
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if meta:get_string("infotext") ~= "anvil"
then
minetest.registered_nodes["mcl_anvils:anvil"].on_construct(anvilpos)
end
end
end
-------------------------------------------------------------------------------
-- randomize table
-------------------------------------------------------------------------------
function shuffle(tbl, pr)
local table = settlements.shallowCopy(tbl)
local size = #table
for i = size, 1, -1 do
local rand = pr:next(1, size)
table[i], table[rand] = table[rand], table[i]
end
return table
end
-------------------------------------------------------------------------------
-- evaluate heightmap
-------------------------------------------------------------------------------
function settlements.evaluate_heightmap()
local heightmap = minetest.get_mapgen_object("heightmap")
if not heightmap then
minetest.log("action", "No heightmap. That should not happen")
return max_height_difference + 1
end
--minetest.log("action", "heightmap size: " .. tostring(#heightmap))
-- max height and min height, initialize with impossible values for easier first time setting
local max_y = -50000
local min_y = 50000
-- only evaluate the center square of heightmap 40 x 40
local square_start = 1621
local square_end = 1661
for j = 1 , 40, 1 do
if square_start >= #heightmap then
--minetest.log("action", "Heightmap size reached. Go no further outside")
break
end
for i = square_start, square_end, 1 do
--minetest.log("action", "current hm index: " .. tostring(i) .. "current hm entry: " .. tostring(heightmap[i]))
if i >= #heightmap then
--minetest.log("action", "Heightmap size reached. Go no further")
break
end
local current_hm_entry = heightmap[i]
if current_hm_entry then
-- skip buggy heightmaps, return high value. Converted mcl5 maps can be -31007
if current_hm_entry == -31000 or heightmap[i] == 31000 then
--minetest.log("action", "incorrect heighmap values. abandon")
return max_height_difference + 1
end
if current_hm_entry < min_y then
min_y = current_hm_entry
end
if current_hm_entry > max_y then
max_y = current_hm_entry
end
else
--minetest.log("action", "Failed to get hm index: " .. tostring(i) .. "and ... " .. tostring(#heightmap))
end
end
-- set next line
square_start = square_start + 80
square_end = square_end + 80
end
-- return the difference between highest and lowest pos in chunk
local height_diff = max_y - min_y
--minetest.log("action", "height_diff = " .. tostring(height_diff))
-- filter buggy heightmaps
if height_diff <= 1 then
return max_height_difference + 1
end
--minetest.log("action", "return heigh diff = " .. tostring(height_diff))
-- debug info
settlements.debug("heightdiff ".. height_diff)
return height_diff
end
-------------------------------------------------------------------------------
-- Set array to list
-- https://stackoverflow.com/questions/656199/search-for-an-item-in-a-lua-list
-------------------------------------------------------------------------------
function settlements.Set (list)
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local set = {}
for _, l in ipairs(list) do set[l] = true end
return set
end