mod-sneeker/spawn.lua

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Lua
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local spawn_nodes = {}
if sneeker.spawn_nodes ~= "" then
if not sneeker.spawn_nodes:find(",") then
table.insert(spawn_nodes, sneeker.spawn_nodes)
else
for _, node in ipairs(sneeker.spawn_nodes:split(",")) do
local node = node:trim()
if node ~= "" then
table.insert(spawn_nodes, node)
end
end
end
end
if #spawn_nodes == 0 then
sneeker.log("warning", "no spawning nodes set, cannot spawn")
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end
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core.register_abm({
nodenames = spawn_nodes,
neighbors = {"air"},
interval = sneeker.spawn_interval,
chance = sneeker.spawn_chance,
action = function(pos, node, aoc, aocw)
if aoc >= sneeker.spawn_mapblock_limit then return end
-- check above target node
pos.y = pos.y+1
local pos_string = tostring(math.floor(pos.x))
.. "," .. tostring(math.floor(pos.y))
.. "," .. tostring(math.floor(pos.z))
if sneeker.spawn_require_player_nearby then
local player_nearby = false
for _, entity in ipairs(core.get_objects_inside_radius(pos, sneeker.spawn_player_radius)) do
if entity:is_player() then
player_nearby = true
break
end
end
if not player_nearby then return end
end
if pos.y > sneeker.spawn_maxheight or pos.y < sneeker.spawn_minheight then
return
end
-- needs two vertical air nodes to spawn
for _, node_pos in ipairs({pos, {x=pos.x, y=pos.y+1, z=pos.z}}) do
if core.get_node(node_pos).name ~= "air" then
return
end
end
local llevel = core.get_node_light(pos)
if not llevel or llevel > sneeker.spawn_maxlight or llevel < sneeker.spawn_minlight then
return
end
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local spawned = core.add_entity(pos, "sneeker:sneeker")
if not spawned then
sneeker.log("warning", "Failed to spawn at: " .. pos_string)
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else
sneeker.log("debug", "Spawned at: " .. pos_string)
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end
end
})