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Merge pull request 'Make `mcl_dripping` API public + fix code style' (#2861) from mcl-dripping-api-public into master

Reviewed-on: MineClone2/MineClone2#2861
Reviewed-by: cora <cora@noreply.git.minetest.land>
This commit is contained in:
cora 2022-10-25 10:05:24 +00:00
commit 6a512139c9
3 changed files with 104 additions and 52 deletions

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# mcl_dripping
Dripping Mod by kddekadenz, modified for MineClone 2 by Wuzzy, NO11 and AFCM
## Manual
- drops are generated rarely under solid nodes
- they will stay some time at the generated block and than they fall down
- when they collide with the ground, a sound is played and they are destroyed
Water and Lava have builtin drops registered.
## License
code & sounds: CC0
## API
```lua
mcl_dripping.register_drop({
-- The group the liquid's nodes belong to
liquid = "water",
-- The texture used (particles will take a random 2x2 area of it)
texture = "default_water_source_animated.png",
-- Define particle glow, ranges from `0` to `minetest.LIGHT_MAX`
light = 1,
-- The nodes (or node group) the particles will spawn under
nodes = { "group:opaque", "group:leaves" },
-- The sound that will be played then the particle detaches from the roof, see SimpleSoundSpec in lua_api.txt
sound = "drippingwater_drip",
-- The interval for the ABM to run
interval = 60,
-- The chance of the ABM
chance = 10,
})
```

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-- License of code, textures & sounds: CC0
local math = math
local function make_drop(pos,liquid,sound,interval)
mcl_dripping = {}
---@param pos Vector
---@param liquid string
---@param sound SimpleSoundSpec
---@param interval integer
---@param texture string
local function make_drop(pos, liquid, sound, interval, texture)
local pt = {
velocity = vector.new(0,0,0),
velocity = vector.zero(),
collision_removal = false,
}
local t = math.random() + math.random(1, interval)
minetest.after(t, function()
local x, z = math.random(-45, 45) / 100, math.random(-45, 45) / 100
pt.pos = vector.offset(pos, x, -0.52, z)
pt.acceleration = vector.new(0,0,0)
pt.acceleration = vector.zero()
pt.collisiondetection = false
pt.expirationtime = t
pt.texture="[combine:2x2:" .. -math.random(1, 16) .. "," .. -math.random(1, 16) .. "=default_" .. liquid .. "_source_animated.png"
pt.texture = "[combine:2x2:" ..
-math.random(1, 16) .. "," .. -math.random(1, 16) .. "=" .. texture
minetest.add_particle(pt)
minetest.after(t, function()
pt.acceleration = vector.new(0, -5, 0)
pt.collisiondetection = true
pt.expirationtime = math.random() + math.random(1, interval / 2)
minetest.add_particle(pt)
minetest.sound_play({name = "drippingwater_" .. sound .. "drip"}, {pos = pos, gain = 0.5, max_hear_distance = 8}, true)
minetest.sound_play(sound, { pos = pos, gain = 0.5, max_hear_distance = 8 },
true)
end)
end)
end
local function register_drop(liquid, glow, sound, nodes, interval, chance)
---@class mcl_dripping_drop_definition
---@field liquid string The group the liquid's nodes belong to
---@field texture string The texture used (particles will take a random 2x2 area of it)
---@field light integer Define particle glow, ranges from `0` to `minetest.LIGHT_MAX`
---@field nodes string[] The nodes (or node group) the particles will spawn under
---@field interval integer The interval for the ABM to run
---@field chance integer The chance of the ABM
---@field sound SimpleSoundSpec The sound that will be played then the particle detaches from the roof
---@param def mcl_dripping_drop_definition
function mcl_dripping.register_drop(def)
minetest.register_abm({
label = "Create drops",
nodenames = nodes,
neighbors = {"group:" .. liquid},
interval = interval,
chance = chance,
nodenames = def.nodes,
neighbors = { "group:" .. def.liquid },
interval = def.interval,
chance = def.chance,
action = function(pos)
local r = math.ceil(interval / 20)
local nn=minetest.find_nodes_in_area(vector.offset(pos,-r,0,-r),vector.offset(pos,r,0,r),nodes)
local r = math.ceil(def.interval / 20)
local nn = minetest.find_nodes_in_area(vector.offset(pos, -r, 0, -r), vector.offset(pos, r, 0, r), def.nodes)
--start a bunch of particle cycles to be able to get away
--with longer abm cycles
table.shuffle(nn)
for i = 1, math.random(#nn) do
if minetest.get_item_group(minetest.get_node(vector.offset(nn[i], 0, 1, 0)).name, liquid) ~= 0
if minetest.get_item_group(minetest.get_node(vector.offset(nn[i], 0, 1, 0)).name, def.liquid) ~= 0
and minetest.get_node(vector.offset(nn[i], 0, -1, 0)).name == "air" then
make_drop(nn[i],liquid,sound,interval)
make_drop(nn[i], def.liquid, def.sound, def.interval, def.texture)
end
end
end,
})
end
register_drop("water", 1, "", {"group:opaque", "group:leaves"},60,10)
register_drop("lava", math.max(7, minetest.registered_nodes["mcl_core:lava_source"].light_source - 3), "lava", {"group:opaque"},60,10)
mcl_dripping.register_drop({
liquid = "water",
texture = "default_water_source_animated.png",
light = 1,
nodes = { "group:opaque", "group:leaves" },
sound = "drippingwater_drip",
interval = 60,
chance = 10,
})
mcl_dripping.register_drop({
liquid = "lava",
texture = "default_lava_source_animated.png",
light = math.max(7, minetest.registered_nodes["mcl_core:lava_source"].light_source - 3),
nodes = { "group:opaque" },
sound = "drippingwater_lavadrip",
interval = 60,
chance = 10,
})

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Dripping Mod
by kddekadenz
modified for MineClone 2 by Wuzzy and NO11
Installing instructions:
1. Copy the mcl_dripping mod folder into games/gamemode/mods
2. Start game and enjoy :)
Manual:
-> drops are generated rarely under solid nodes
-> they will stay some time at the generated block and than they fall down
-> when they collide with the ground, a sound is played and they are destroyed
License:
code & sounds: CC0
Changelog:
16.04.2012 - first release
28.04.2012 - drops are now 3D; added lava drops; fixed generating of drops (not at edges now)