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Add max_blast_resistance to mcl_explosions.explode

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If the option is specified, then the explosion will treat all
non-indestructible nodes as having a blast resistance of no more than
the value of the option.
This commit is contained in:
Elias Åström 2021-01-26 16:57:18 +01:00
parent 34274486c7
commit 948438bd1c
1 changed files with 20 additions and 1 deletions
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21
mods/CORE/mcl_explosions/init.lua
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@ -32,6 +32,10 @@ local STEP_LENGTH = 0.3
-- How many rays to compute entity exposure to explosion
local N_EXPOSURE_RAYS = 16
-- Nodes having a blast resistance of this value or higher are treated as
-- indestructible
local INDESTRUCT_BLASTRES = 1000000
minetest.register_on_mods_loaded(function()
-- Store blast resistance values by content ids to improve performance.
for name, def in pairs(minetest.registered_nodes) do
@ -142,6 +146,9 @@ end
-- drop_chance - The chance that destroyed nodes will drop their items
-- fire - If true, 1/3 nodes become fire
-- griefing - If true, the explosion will destroy nodes (default: true)
-- max_blast_resistance - The explosion will treat all non-indestructible nodes
-- as having a blast resistance of no more than this
-- value
--
-- Note that this function has been optimized, it contains code which has been
-- inlined to avoid function calls and unnecessary table creation. This was
@ -170,6 +177,7 @@ local function trace_explode(pos, strength, raydirs, radius, info, puncher)
local drop_chance = info.drop_chance
local fire = info.fire
local max_blast_resistance = info.max_blast_resistance
-- Trace rays for environment destruction
if info.griefing then
@ -191,6 +199,10 @@ local function trace_explode(pos, strength, raydirs, radius, info, puncher)
local cid = data[idx]
local br = node_blastres[cid]
if br < INDESTRUCT_BLASTRES and br > max_blast_resistance then
br = max_blast_resistance
end
local hash = minetest.hash_node_position({x=npos_x, y=npos_y, z=npos_z})
rpos_x = rpos_x + STEP_LENGTH * rdir_x
@ -399,6 +411,9 @@ end
-- Values in info:
-- drop_chance - If specified becomes the drop chance of all nodes in the
-- explosion (default: 1.0 / strength)
-- max_blast_resistance - If specified the explosion will treat all
-- non-indestructible nodes as having a blast resistance
-- of no more than this value
-- sound - If true, the explosion will play a sound (default: true)
-- particles - If true, the explosion will create particles (default: true)
-- fire - If true, 1/3 nodes become fire (default: false)
@ -422,8 +437,11 @@ function mcl_explosions.explode(pos, strength, info, puncher)
if info.sound == nil then info.sound = true end
if info.fire == nil then info.fire = false end
if info.griefing == nil then info.griefing = true end
if info.max_blast_resistance == nil then
info.max_blast_resistance = INDESTRUCT_BLASTRES
end
-- For backwards compatability
-- For backwards compatibility
if info.no_particle then info.particles = false end
if info.no_sound then info.sound = false end
@ -431,6 +449,7 @@ function mcl_explosions.explode(pos, strength, info, puncher)
if minetest.is_creative_enabled("") then
info.drop_chance = 0
end
trace_explode(pos, strength, shape, radius, info, puncher)
if info.particles then