limit redstone distance by checking for players

This should probably be implemented by having redstone signals
lose strength like in mc. This just prevents redstone action
further than 40 nodes from each player.
This commit is contained in:
cora 2022-03-11 16:51:53 +01:00 committed by kay27
parent 89cbc1deed
commit ba5474f5d4
1 changed files with 12 additions and 0 deletions

View File

@ -346,8 +346,16 @@ function mesecon.vm_abort()
vm_cache = nil
end
local function is_player_close(pos)
for k,p in pairs(minetest.get_connected_players()) do
local d=vector.distance(pos,p:get_pos())
if d < 40 then return true end
end
end
-- Gets the cache entry covering a position, populating it if necessary.
local function vm_get_or_create_entry(pos)
if not is_player_close(pos) then return end
local hash = hash_blockpos(pos)
local tbl = vm_cache[hash]
if not tbl then
@ -364,6 +372,7 @@ end
-- transaction.
function mesecon.vm_get_node(pos)
local tbl = vm_get_or_create_entry(pos)
if not tbl then return end
local index = tbl.va:indexp(pos)
local node_value = tbl.data[index]
if node_value == minetest.CONTENT_IGNORE then
@ -380,6 +389,7 @@ end
-- Existing param1, param2, and metadata are left alone.
function mesecon.vm_swap_node(pos, name)
local tbl = vm_get_or_create_entry(pos)
if not tbl then return end
local index = tbl.va:indexp(pos)
tbl.data[index] = minetest.get_content_id(name)
tbl.dirty = true
@ -393,6 +403,7 @@ end
--
-- Inside a VM transaction, the transactions VM cache is used.
function mesecon.get_node_force(pos)
if not is_player_close(pos) then return end
if vm_cache then
return mesecon.vm_get_node(pos)
else
@ -424,6 +435,7 @@ function mesecon.swap_node_force(pos, name)
-- This serves to both ensure the mapblock is loaded and also hand us
-- the old node table so we can preserve param2.
local node = mesecon.get_node_force(pos)
if not node then return end
node.name = name
minetest.swap_node(pos, node)
end