VoxeLibre/mods/MAPGEN/mcl_mapgen_core/api.lua

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local registered_generators = {}
local lvm, nodes, param2 = 0, 0, 0
local lvm_buffer = {}
minetest.register_on_generated(function(minp, maxp, blockseed)
minetest.log("action", "[mcl_mapgen_core] Generating chunk " .. minetest.pos_to_string(minp) .. " ... " .. minetest.pos_to_string(maxp))
local p1, p2 = {x=minp.x, y=minp.y, z=minp.z}, {x=maxp.x, y=maxp.y, z=maxp.z}
if lvm > 0 then
local lvm_used, shadow, deco_used = false, false
local lb2 = {} -- param2
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local e1, e2 = {x=emin.x, y=emin.y, z=emin.z}, {x=emax.x, y=emax.y, z=emax.z}
local data2
local data = vm:get_data(lvm_buffer)
if param2 > 0 then
data2 = vm:get_param2_data(lb2)
end
local area = VoxelArea:new({MinEdge=e1, MaxEdge=e2})
for _, rec in ipairs(registered_generators) do
if rec.vf then
local lvm_used0, shadow0, deco = rec.vf(vm, data, data2, e1, e2, area, p1, p2, blockseed)
if lvm_used0 then
lvm_used = true
end
if shadow0 then
shadow = true
end
if deco then
deco_used = true
end
end
end
if lvm_used then
-- Write stuff
vm:set_data(data)
if param2 > 0 then
vm:set_param2_data(data2)
end
if deco_used then
minetest.generate_decorations(vm)
end
vm:calc_lighting(p1, p2, shadow)
vm:write_to_map()
vm:update_liquids()
end
end
if nodes > 0 then
for _, rec in ipairs(registered_generators) do
if rec.nf then
rec.nf(p1, p2, blockseed)
end
end
end
mcl_vars.add_chunk(minp)
end)
function minetest.register_on_generated(node_function)
mcl_mapgen_core.register_generator("mod_"..minetest.get_current_modname().."_"..tostring(#registered_generators+1), nil, node_function)
end
function mcl_mapgen_core.register_generator(id, lvm_function, node_function, priority, needs_param2)
if not id then return end
local priority = priority or 5000
if lvm_function then lvm = lvm + 1 end
if node_function then nodes = nodes + 1 end
if needs_param2 then param2 = param2 + 1 end
local new_record = {
id = id,
i = priority,
vf = lvm_function,
nf = node_function,
needs_param2 = needs_param2,
}
table.insert(registered_generators, new_record)
table.sort(registered_generators, function(a, b)
return (a.i < b.i) or ((a.i == b.i) and a.vf and (b.vf == nil))
end)
end
function mcl_mapgen_core.unregister_generator(id)
local index
for i, gen in ipairs(registered_generators) do
if gen.id == id then
index = i
break
end
end
if not index then return end
local rec = registered_generators[index]
table.remove(registered_generators, index)
if rec.vf then lvm = lvm - 1 end
if rec.nf then nodes = nodes - 1 end
if rec.needs_param2 then param2 = param2 - 1 end
--if rec.needs_level0 then level0 = level0 - 1 end
end