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core: implement safe_region
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parent
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commit
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@ -1,5 +1,7 @@
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local we_c = worldeditadditions_core
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-- WARNING: safe_region MUST NOT be imported more than once, as it defines chat commands. If you want to import it again elsewhere, check first that multiple dofile() calls don't execute a file more than once.
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local safe_region = dofile(we_c.modpath.."/core/safe_region.lua")
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local human_size = dofile(we_c.modpath.."/core/lib/human_size.lua")
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-- TODO: Reimplement worldedit.player_notify(player_name, msg_text)
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@ -39,9 +41,9 @@ local function run_command(cmdname, options, player_name, paramtext)
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if potential_changes > limit then
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worldedit.player_notify(player_name, "/"..cmdname.." "..paramtext.."' may affect up to "..human_size(potential_changes).." nodes. Type //y to continue, or //n to cancel (see the //saferegion command to control when this message appears).")
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-- TODO: Wrap run_command_stage2 in safe_region stuff
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run_command_stage2(player_name, options.func, parse_result)
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safe_region(player_name, cmdname, function()
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run_command_stage2(player_name, options.func, parse_result)
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end)
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end
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else
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run_command_stage2(player_name, options.func, parse_result)
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65
worldeditadditions_core/core/safe_region.lua
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65
worldeditadditions_core/core/safe_region.lua
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@ -0,0 +1,65 @@
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-- ███████ █████ ███████ ███████ ██████ ███████ ██████ ██ ██████ ███ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ████ ██
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-- ███████ ███████ █████ █████ ██████ █████ ██ ███ ██ ██ ██ ██ ██ ██
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-- ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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-- ███████ ██ ██ ██ ███████ ██ ██ ███████ ██████ ██ ██████ ██ ████
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local worldedit_command_y, worldedit_command_n
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if minetest.global_exists("worldedit") then
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worldedit_command_y = minetest.registered_commands["/y"].func
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worldedit_command_n = minetest.registered_commands["/n"].func
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end
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--- A table that holds at most 1 pending function call per player.
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local pending_calls = {}
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--- Captures the given function in the safe_region subsystem for later execution.
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-- @param player_name string The name of the player.
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-- @param cmdname string The name of the command being executed.
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-- @param func function The function to execute later. Will be passed NO ARGUMENTS should it ever get executed in the future (this is not guaranteed).
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-- @returns nil
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local function safe_region(player_name, cmdname, func)
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pending_calls[player_name] = {
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cmdname = cmdname,
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func = func
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}
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end
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minetest.override_chatcommand("/y", {
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params = "",
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description = "Run a pending operation that was captured by the safe region system earlier.",
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func = function(player_name)
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if pending_calls[player_name] == nil then
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if minetest.global_exists("worldedit") and worldedit_command_y ~= nil then
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worldedit_command_y(player_name)
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else
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worldedit.player_notify(player_name, "There aren't any pending operations at the moment.")
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end
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else
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pending_calls[player_name].func()
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pending_calls[player_name] = nil
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end
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end
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})
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minetest.override_chatcommand("/n", {
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params = "",
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description = "Abort a pending operation that was captured by the safe region system.",
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func = function(player_name)
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if pending_calls[player_name] == nil then
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if minetest.global_exists("worldedit") and worldedit_command_y ~= nil then
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worldedit_command_n(player_name)
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else
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worldedit.player_notify(player_name, "There aren't any operations pending, so there's nothing to abort.")
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end
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else
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worldedit.player_notify(player_name, "Aborting captured command /"..pending_calls[player_name].cmdname..".")
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pending_calls[player_name] = nil
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end
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end
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})
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return safe_region
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