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MineClone2/mods/MAPGEN/mcl_structures/api.lua

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mcl_structures.registered_structures = {}
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function mcl_structures.place_structure(pos, def, pr)
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if not def then return end
local y_offset = 0
if type(def.y_offset) == "function" then
y_offset = def.y_offset(pr)
elseif def.y_offset then
y_offset = def.y_offset
end
if def.filenames then
local file = def.filenames[pr:next(1,#def.filenames)]
local pp = vector.offset(pos,0,y_offset,0)
mcl_structures.place_schematic(pp, file, "random", nil, true, "place_center_x,place_center_z",def.after_place,pr,{pos,def})
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minetest.log("action","[mcl_structures] "..def.name.." placed at "..minetest.pos_to_string(pos))
return true
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elseif def.place_func and def.place_func(pos,def,pr) then
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if not def.after_place or ( def.after_place and def.after_place(pos,def,pr) ) then
minetest.log("action","[mcl_structures] "..def.name.." placed at "..minetest.pos_to_string(pos))
return true
end
end
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minetest.log("warning","[mcl_structures] placing "..def.name.." failed at "..minetest.pos_to_string(pos))
end
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function mcl_structures.register_structure(name,def,nospawn) --nospawn means it will be placed by another (non-nospawn) structure that contains it's structblock i.e. it will not be placed by mapgen directly
local structblock = "mcl_structures:structblock_"..name
local flags = "place_center_x, place_center_z, force_placement"
local y_offset = 0
local sbgroups = { structblock = 1, not_in_creative_inventory=1 }
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if def.flags then flags = def.flags end
def.name = name
if nospawn then
sbgroups.structblock = nil
sbgroups.structblock_lbm = 1
else
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def.deco = minetest.register_decoration({
name = "mcl_structures:deco_"..name,
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decoration = structblock,
deco_type = "simple",
place_on = def.place_on,
spawn_by = def.spawn_by,
num_spawn_by = def.num_spawn_by,
sidelen = 80,
fill_ratio = def.fill_ratio,
noise_params = def.noise_params,
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flags = flags,
biomes = def.biomes,
y_max = def.y_max,
y_min = def.y_min
})
local deco_id = minetest.get_decoration_id("mcl_structures:deco_"..name)
minetest.set_gen_notify({decoration=true}, { deco_id })
minetest.register_on_generated(function(minp, maxp, blockseed)
local gennotify = minetest.get_mapgen_object("gennotify")
local pr = PseudoRandom(blockseed + 42)
for _, pos in pairs(gennotify["decoration#"..deco_id] or {}) do
local realpos = vector.offset(pos,0,-1,0)
minetest.remove_node(realpos)
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mcl_structures.place_structure(realpos,def,pr)
end
end)
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end
minetest.register_node(":"..structblock, {drawtype="airlike", walkable = false, pointable = false,groups = sbgroups})
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def.structblock = structblock
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mcl_structures.registered_structures[name] = def
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end
--lbm for secondary structures (structblock included in base structure)
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minetest.register_lbm({
name = "mcl_structures:struct_lbm",
run_at_every_load = true,
nodenames = {"group:structblock_lbm"},
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action = function(pos, node)
local name = node.name:gsub("mcl_structures:structblock_","")
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local def = mcl_structures.registered_structures[name]
if not def then return end
minetest.remove_node(pos)
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mcl_structures.place_structure(pos)
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end
})