mirror of
https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-08-25 03:17:24 +02:00
69 lines
2.1 KiB
Lua
69 lines
2.1 KiB
Lua
mcl_particles = {}
|
|
|
|
-- Table of particlespawner IDs on a per-node hash basis
|
|
-- Keys: node position hashes
|
|
-- Values: Tables of particlespawner IDs (each node pos can have an arbitrary number of particlespawners)
|
|
local particle_nodes = {}
|
|
|
|
-- Node particles can be disabled via setting
|
|
local node_particles_allowed = minetest.settings:get("mcl_node_particles") or "none"
|
|
|
|
local levels = {
|
|
high = 3,
|
|
medium = 2,
|
|
low = 1,
|
|
none = 0,
|
|
}
|
|
|
|
allowed_level = levels[node_particles_allowed]
|
|
if not allowed_level then
|
|
allowed_level = levels["none"]
|
|
end
|
|
|
|
|
|
-- Add a particlespawner that is assigned to a given node position.
|
|
-- * pos: Node positon. MUST use integer values!
|
|
-- * particlespawner_definition: definition for minetest.add_particlespawner
|
|
-- * level: detail level of particles. "high", "medium", "low" or "none". High detail levels are for
|
|
-- CPU-demanding particles, like smoke of fire (which occurs frequently)
|
|
-- 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, level)
|
|
if allowed_level == 0 or levels[level] > allowed_level 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
|
|
if not particle_nodes[poshash] then
|
|
particle_nodes[poshash] = {}
|
|
end
|
|
table.insert(particle_nodes[poshash], id)
|
|
return id
|
|
end
|
|
|
|
-- Deletes all particlespawners that are assigned to a node position.
|
|
-- If no particlespawners exist for this position, nothing happens.
|
|
-- pos: Node positon. MUST use integer values!
|
|
-- Returns true if particlespawner could be removed and false if not
|
|
function mcl_particles.delete_node_particlespawners(pos)
|
|
if allowed_level == 0 then
|
|
return false
|
|
end
|
|
local poshash = minetest.hash_node_position(pos)
|
|
local ids = particle_nodes[poshash]
|
|
if ids then
|
|
for i=1, #ids do
|
|
minetest.delete_particlespawner(ids[i])
|
|
end
|
|
particle_nodes[poshash] = nil
|
|
return true
|
|
end
|
|
return false
|
|
end
|