add cooldown and take snowballs on use

internal.lua

@@ -4,6 +4,21 @@ local v_multiply = vector.multiply
 local v_dot = vector.dot
 
 
+local COOLDOWN = 0.2 -- TODO make configurable
+
+
+local player_last_throw_time = {}
+
+core.register_on_leaveplayer(
+    function(player, _timed_out)
+        local player_name = player:get_player_name()
+        if player_name ~= "" then
+            player_last_throw_time[player_name] = nil
+        end
+    end
+)
+
+
 local function spawn_snow_puff(pos, normal)
     local shift = normal * 0.1
     local center = pos + shift
@@ -15,7 +30,7 @@ local function spawn_snow_puff(pos, normal)
         drag = 0.1,
         attract = {
             kind = "point",
-            strength = -10,
+            strength = -14,
             origin = center - shift,
         },
         acc = v_new(0, -8, 0),
@@ -24,6 +39,7 @@ local function spawn_snow_puff(pos, normal)
         collisiondetection = true,
         collision_removal = true,
         texpool = { "yl_snowball_snowflake.png" },
+        --glow = 2,
     }
     core.add_particlespawner(def)
 end
@@ -63,6 +79,15 @@ yl_snowball.on_use = function(itemstack, user, pointed_thing)
         return itemstack
     end
     local player = user
+    local player_name = player:get_player_name()
+
+    local current_time = os.clock() --core.get_gametime()
+    if current_time - (player_last_throw_time[player_name] or 0) < COOLDOWN then
+        return nil
+    end
+
+    player_last_throw_time[player_name] = current_time
+
     local speed = 15
     local start, look, p_vel = get_start_params(player)
     -- projectile velocity points where we look + affected by player movement
@@ -76,6 +101,10 @@ yl_snowball.on_use = function(itemstack, user, pointed_thing)
         player,
         nil)
 
+    if not core.check_player_privs(player, "creative") then
+        itemstack:take_item(1)
+    end
+    return itemstack
 end
 
 
@@ -89,7 +118,7 @@ core.register_craftitem(
         stack_max= 99,
         inventory_image = "yl_snowball.png",
         on_use = function(...) -- FIXME remove wrapper
-            yl_snowball.on_use(...)
+            return yl_snowball.on_use(...)
         end,
     }
 )