diff --git a/init.lua b/init.lua
index d1df172..76d2deb 100644
--- a/init.lua
+++ b/init.lua
@@ -1,77 +1,21 @@
 -- rumble - Client side mod for Minetest
 -- Scripted by: Li0n
 
-local modname = minetest.get_current_modname()
-local damage_taken = "["..modname.."]".." damage_taken "
-local player_died = "["..modname.."]".." player_died"
-local local_hp_change =  "["..modname.."]".." hp_change "
-local tnt_explode =  "["..modname.."]".." tnt_explode "
--- local rightclick = 
+-- todo add max rumble strength setting
 
 -- step 1 (start)
 minetest.register_on_mods_loaded(function()
     minetest.display_chat_message(modname.." mod loaded. May the rumble be with you!")
-    return false
 end)
 
--- step 2 (get hurt)
+-- step 2 (take damage)
 minetest.register_on_damage_taken(function(hp)
-    minetest.display_chat_message(damage_taken..tostring(hp))
-    minetest.log("action", damage_taken..tostring(hp))
-    return false
+    local rumble_strength = hp/20
+    local rumble_duration = hp
+    minetest.log("action", "[rumble] ".."queue ".."..rumble_strength.." "..rumble_duration)
 end)
 
 -- step 3 (die)
 minetest.register_on_death(function()
-    minetest.display_chat_message(player_died)
-    minetest.log("action", player_died)
-    return false
-end)
-
--- step 4 (track hp level)
-minetest.register_on_hp_modification(function(hp)
-    minetest.display_chat_message(local_hp_change..tostring(hp))
-    minetest.log("action", local_hp_change..tostring(hp))
-    return false
-end)
-
--- step 5 (griefer mode)
--- minetest.register_on_item_use(function(item, pointed_thing)
---     minetest.display_chat_message(tnt_explode..dump2(item)..dump2(pointed_thing))
---     minetest.log("action", tnt_explode..dump2(item)..dump2(pointed_thing))
---     return false
--- end)
-
--- minetest.register_on_receiving_chat_message(function(message))`
---     * Called always when a client receive a message
---     * Return `true` to mark the message as handled, which means that it will not be shown to chat
-
--- * `minetest.register_on_dignode(function(pos, node))`
---     * Called when the local player digs a node
---     * Newest functions are called first
---     * If any function returns true, the node isn't dug
-
--- * `minetest.register_on_placenode(function(pointed_thing, node))`
---     * Called when a node has been placed
-
--- * `minetest.register_on_item_use(function(item, pointed_thing))`
---     * Called when the local player uses an item.
---     * Newest functions are called first.
---     * If any function returns true, the item use is not sent to server.
-
--- * `minetest.after(time, func, ...)`
---     * Call the function `func` after `time` seconds, may be fractional
---     * Optional: Variable number of arguments that are passed to `func`
--- * `minetest.get_us_time()`
---     * Returns time with microsecond precision. May not return wall time.
--- * `minetest.get_timeofday()`
---     * Returns the time of day: `0` for midnight, `0.5` for midday
-
--- * `minetest.get_player_names()`
---     * Returns list of player names on server (nil if CSM_RF_READ_PLAYERINFO is enabled by server)
-
--- * `minetest.register_on_shutdown(function())`
---     * Called before client shutdown
---     * **Warning**: If the client terminates abnormally (i.e. crashes), the registered
---       callbacks **will likely not be run**. Data should be saved at
---      semi-frequent intervals as well as on server shutdown.
\ No newline at end of file
+    minetest.log("action", "[rumble] instant 0 0")
+end)
\ No newline at end of file