diff options
| author | Uberi <azhang9@gmail.com> | 2014-03-12 16:11:00 -0400 |
|---|---|---|
| committer | Uberi <azhang9@gmail.com> | 2014-03-12 16:11:00 -0400 |
| commit | b29523db4df4d793165672cda8adb3090d8b9ffe (patch) | |
| tree | 9687fad3b1a5eba923da970411e74c1b47c5d8dd /worldedit_commands/safe.lua | |
| parent | 0dddffa544eb4aa5d2bcfae09b4f29db011b704d (diff) | |
Implement full size checking for every possible command.
Diffstat (limited to 'worldedit_commands/safe.lua')
| -rw-r--r-- | worldedit_commands/safe.lua | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/worldedit_commands/safe.lua b/worldedit_commands/safe.lua new file mode 100644 index 0000000..6f83078 --- /dev/null +++ b/worldedit_commands/safe.lua @@ -0,0 +1,57 @@ +local safe_region_callback
+local safe_region_name
+local safe_region_param
+
+--`callback` is a callback to run when the user confirms
+--`nodes_needed` is a function accepting `param`, `pos1`, and `pos2` to calculate the number of nodes needed
+safe_region = function(callback, nodes_needed)
+ --default node volume calculation
+ nodes_needed = nodes_needed or check_region
+
+ return function(name, param)
+ --check if the operation applies to a safe number of nodes
+ local count = nodes_needed(name, param)
+ if count == nil then return end --invalid command
+ if count < 10000 then
+ return callback(name, param)
+ end
+
+ --save callback to call later
+ safe_region_callback, safe_region_name, safe_region_param = callback, name, param
+ worldedit.player_notify(name, "WARNING: this operation could affect up to " .. count .. " nodes; type //y to continue or //n to cancel")
+ end
+end
+
+minetest.register_chatcommand("/y", {
+ params = "",
+ description = "Confirm a pending operation",
+ func = function()
+ local callback, name, param = safe_region_callback, safe_region_name, safe_region_param
+ if not callback then
+ worldedit.player_notify(name, "no operation pending")
+ return
+ end
+
+ --obtain positions
+ local pos1, pos2 = worldedit.pos1[name], worldedit.pos2[name]
+ if pos1 == nil or pos2 == nil then
+ worldedit.player_notify(name, "no region selected")
+ return
+ end
+
+ safe_region_callback, safe_region_name, safe_region_param = nil, nil, nil --reset pending operation
+ callback(name, param, pos1, pos2)
+ end,
+})
+
+minetest.register_chatcommand("/n", {
+ params = "",
+ description = "Confirm a pending operation",
+ func = function()
+ if not safe_region_callback then
+ worldedit.player_notify(name, "no operation pending")
+ return
+ end
+ safe_region_callback, safe_region_name, safe_region_param = nil, nil, nil
+ end,
+})
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