1 files changed, 28 insertions, 0 deletions
diff --git a/commands/create_lag.lua b/commands/create_lag.lua
new file mode 100644
index 0000000..6598910
--- /dev/null
+++ b/commands/create_lag.lua
@@ -0,0 +1,28 @@
+local current_lag = 0
+local lag_chance = 0
+
+local wait = mesecons_debug.wait
+
+
+minetest.register_chatcommand("create_lag", {
+    description = "foce a wait of <duration> us for 1 / <chance> server steps",
+    params = "<duration> <chance>",
+    privs = { mesecons_debug = true },
+    func = function(_name, setting)
+        local lag, chance = setting:match('^(%S+)%s+(%S+)$')
+        lag = tonumber(lag)
+        chance = tonumber(chance)
+        if not (lag and chance) then
+            return false, "can't grok lag duration and chance"
+        end
+        current_lag = lag
+        lag_chance = chance
+        return true
+    end,
+})
+
+minetest.register_globalstep(function(_dtime)
+    if lag_chance > 0 and current_lag > 0 and math.random() < 1 / lag_chance then
+        wait(current_lag)
+    end
+end)