VoxeLibre/mods/CORE/mcl_particles/init.lua

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local particle_nodes = {}
mcl_particles = {}
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-- Node particles can be disabled via setting
local node_particles_allowed = minetest.settings:get_bool("mcl_node_particles", true)
-- Add a particlespawner that is assigned to a given node position.
-- * pos: Node positon. MUST use rounded values!
-- * particlespawner_definition: definition for minetest.add_particlespawner
-- NOTE: All particlespawners are automatically removed on shutdown.
-- Returns particlespawner ID on succcess and nil on failure
function mcl_particles.add_node_particlespawner(pos, particlespawner_definition)
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if not node_particles_allowed then
return
end
local poshash = minetest.hash_node_position(pos)
if not poshash then
return
end
local id = minetest.add_particlespawner(particlespawner_definition)
if id == -1 then
return
end
particle_nodes[poshash] = id
return id
end
-- Deleted a particlespawner that is assigned to a node position, if one exists.
-- Otherwise, this does nothing.
-- pos: Node positon. MUST use rounded values!
-- Returns true if particlespawner could be removed and false if none existed
function mcl_particles.delete_node_particlespawner(pos)
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if not node_particles_allowed then
return false
end
local poshash = minetest.hash_node_position(pos)
local id = particle_nodes[poshash]
if id then
minetest.delete_particlespawner(id)
return true
end
return false
end