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Add particles and sounds from explosions

This commit is contained in:
Elias Åström 2020-04-15 20:30:12 +02:00
parent 1d5c11f683
commit 77c95fe8c3
1 changed files with 43 additions and 8 deletions

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@ -133,6 +133,29 @@ local function compute_sphere_rays(radius)
return rays
end
-- Add particles from explosion
--
-- Parameters:
-- pos - The position of the explosion
-- radius - The radius of the explosion
local function add_particles(pos, radius)
minetest.add_particlespawner({
amount = 64,
time = 0.125,
minpos = pos,
maxpos = pos,
minvel = {x = -radius, y = -radius, z = -radius},
maxvel = {x = radius, y = radius, z = radius},
minacc = vector.new(),
maxacc = vector.new(),
minexptime = 0.5,
maxexptime = 1.0,
minsize = radius * 0.5,
maxsize = radius * 1.0,
texture = "tnt_smoke.png",
})
end
-- Get position from hash. This should be identical to
-- 'minetest.get_position_from_hash' but is used in case the hashing function
-- would change.
@ -153,8 +176,7 @@ end
-- strength - The strength of each ray
-- raydirs - The directions for each ray
-- radius - The maximum distance each ray will go
-- drop_chance - Chance that destroy nodes drop their items
-- (becomes '1.0 / strength' if unspecified)
-- drop_chance - The chance that destroyed nodes will drop their items
--
-- Note that this function has been optimized, it contains code which has been
-- inlined to avoid function calls and unnecessary table creation. This was
@ -220,10 +242,6 @@ local function trace_explode(pos, strength, raydirs, radius, drop_chance)
end
end
if drop_chance == nil then
drop_chance = 1 / strength
end
-- Remove destroyed blocks and drop items
for hash, idx in pairs(destroy) do
if math.random() <= drop_chance then
@ -253,7 +271,14 @@ end
-- Parameters:
-- pos - The position where the explosion originates from
-- strength - The blast strength of the explosion (a TNT explosion uses 4)
function mcl_explosions.explode(pos, strength)
-- info - Table containing information about explosion.
--
-- Values in info:
-- drop_chance - If specified becomes the drop chance of all nodes in the
-- explosion (defaults to 1.0 / strength)
-- no_sound - If true then the explosion will not play a sound
-- no_particle - If true then the explosion will not create particles
function mcl_explosions.explode(pos, strength, info)
-- The maximum blast radius (in the air)
local radius = math.ceil(1.3 * strength / (0.3 * 0.75) * 0.3)
@ -262,5 +287,15 @@ function mcl_explosions.explode(pos, strength)
end
shape = sphere_shapes[radius]
trace_explode(pos, strength, shape, radius)
trace_explode(pos, strength, shape, radius, (info and info.drop_chance) or 1 / strength)
if not (info and info.no_sound) then
add_particles(pos, radius)
end
if not (info and info.no_particle) then
minetest.sound_play("tnt_explode", {
pos = pos, gain = 1.0,
max_hear_distance = strength * 16
}, true)
end
end