From 0f7d0bfd7ab647ac61158d69176a47ec26b5dd87 Mon Sep 17 00:00:00 2001
From: Foz <fozolo@gmail.com>
Date: Fri, 6 May 2016 21:47:22 -0400
Subject: [PATCH] TNT: Track TNT owner in metadata for protection mods
It is useful for protection mods to know who owns an exploding
TNT block. This allows the blocks destroyed by the TNT to be
limited to the same ones the owner could destroy without using
TNT.
TNT placed within a protected area by the area owner, and later
ignited by another player will destroy within the protected area
nodes the igniter may not otherwise be able to interact with. Any
player could significantly increase the size of an explosion by
placing more TNT in an adjacent unprotected area if the original
TNT block was placed withing 1 node of such a boundary. This
feature sounds dangerous, but we are talking about TNT. Players
should use it carefully.
---
mods/tnt/init.lua | 32 +++++++++++++++++++++++---------
1 file changed, 23 insertions(+), 9 deletions(-)
diff --git a/mods/tnt/init.lua b/mods/tnt/init.lua
index f54b2f1..5500d64 100644
--- a/mods/tnt/init.lua
+++ b/mods/tnt/init.lua
@@ -86,8 +86,8 @@ end
local basic_flame_on_construct -- cached value
local function destroy(drops, npos, cid, c_air, c_fire,
on_blast_queue, on_construct_queue,
- ignore_protection, ignore_on_blast)
- if not ignore_protection and minetest.is_protected(npos, "") then
+ ignore_protection, ignore_on_blast, owner)
+ if not ignore_protection and minetest.is_protected(npos, owner) then
return cid
end
@@ -266,13 +266,13 @@ function tnt.burn(pos, nodename)
elseif def.on_ignite then
def.on_ignite(pos)
elseif minetest.get_item_group(name, "tnt") > 0 then
+ minetest.swap_node(pos, {name = name .. "_burning"})
minetest.sound_play("tnt_ignite", {pos = pos})
- minetest.set_node(pos, {name = name .. "_burning"})
minetest.get_node_timer(pos):start(1)
end
end
-local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast)
+local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast, owner)
pos = vector.round(pos)
-- scan for adjacent TNT nodes first, and enlarge the explosion
local vm1 = VoxelManip()
@@ -333,7 +333,7 @@ local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast)
if cid ~= c_air then
data[vi] = destroy(drops, p, cid, c_air, c_fire,
on_blast_queue, on_construct_queue,
- ignore_protection, ignore_on_blast)
+ ignore_protection, ignore_on_blast, owner)
end
end
vi = vi + 1
@@ -375,14 +375,19 @@ local function tnt_explode(pos, radius, ignore_protection, ignore_on_blast)
queued_data.fn(queued_data.pos)
end
+ minetest.log("action", "TNT owned by " .. owner .. " detonated at " ..
+ minetest.pos_to_string(pos) .. " with radius " .. radius)
+
return drops, radius
end
function tnt.boom(pos, def)
+ local meta = minetest.get_meta(pos)
+ local owner = meta:get_string("owner")
minetest.sound_play("tnt_explode", {pos = pos, gain = 1.5, max_hear_distance = 2*64})
minetest.set_node(pos, {name = "tnt:boom"})
local drops, radius = tnt_explode(pos, def.radius, def.ignore_protection,
- def.ignore_on_blast)
+ def.ignore_on_blast, owner)
-- append entity drops
local damage_radius = (radius / def.radius) * def.damage_radius
entity_physics(pos, damage_radius, drops)
@@ -579,9 +584,16 @@ function tnt.register_tnt(def)
is_ground_content = false,
groups = {dig_immediate = 2, mesecon = 2, tnt = 1, flammable = 5},
sounds = default.node_sound_wood_defaults(),
+ after_place_node = function(pos, placer)
+ if placer:is_player() then
+ local meta = minetest.get_meta(pos)
+ meta:set_string("owner", placer:get_player_name())
+ end
+ end,
on_punch = function(pos, node, puncher)
if puncher:get_wielded_item():get_name() == "default:torch" then
- minetest.set_node(pos, {name = name .. "_burning"})
+ minetest.swap_node(pos, {name = name .. "_burning"})
+ minetest.registered_nodes[name .. "_burning"].on_construct(pos)
minetest.log("action", puncher:get_player_name() ..
" ignites " .. node.name .. " at " ..
minetest.pos_to_string(pos))
@@ -600,10 +612,12 @@ function tnt.register_tnt(def)
}
},
on_burn = function(pos)
- minetest.set_node(pos, {name = name .. "_burning"})
+ minetest.swap_node(pos, {name = name .. "_burning"})
+ minetest.registered_nodes[name .. "_burning"].on_construct(pos)
end,
on_ignite = function(pos, igniter)
- minetest.set_node(pos, {name = name .. "_burning"})
+ minetest.swap_node(pos, {name = name .. "_burning"})
+ minetest.registered_nodes[name .. "_burning"].on_construct(pos)
end,
})
end