diff --git a/docs/index.html b/docs/index.html
index 5216dce..fd17121 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -113,7 +113,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/asset.html b/docs/modules/asset.html
index c3222a1..a939867 100644
--- a/docs/modules/asset.html
+++ b/docs/modules/asset.html
@@ -337,7 +337,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/ecs.html b/docs/modules/ecs.html
index 9fb1371..6196154 100644
--- a/docs/modules/ecs.html
+++ b/docs/modules/ecs.html
@@ -323,18 +323,10 @@ end
     <td class="summary">Trigger a custom callback on a single entity.</td>
     </tr>
     <tr>
-    <td class="name" nowrap><a href="#System:callbackFiltered">System:callbackFiltered (filter, name, e, ...)</a></td>
-    <td class="summary">Same as <a href="../modules/ecs.html#System:callback">callback</a>, but will check every system against a filter before calling the callback.</td>
-    </tr>
-    <tr>
     <td class="name" nowrap><a href="#System:emit">System:emit (name, ...)</a></td>
     <td class="summary">Emit an event on the system.</td>
     </tr>
     <tr>
-    <td class="name" nowrap><a href="#System:emitFiltered">System:emitFiltered (filter, name, ...)</a></td>
-    <td class="summary">Same as <a href="../modules/ecs.html#System:emit">emit</a>, but will check every system against a filter before calling the event.</td>
-    </tr>
-    <tr>
     <td class="name" nowrap><a href="#System:destroy">System:destroy ()</a></td>
     <td class="summary">Remove all the entities and subsystems in this system.</td>
     </tr>
@@ -1807,48 +1799,6 @@ avoid repeating your filters or allow controlling several system from a single p
 
 
 
-</dd>
-    <dt>
-    <a name = "System:callbackFiltered"></a>
-    <strong>System:callbackFiltered (filter, name, e, ...)</strong>
-    </dt>
-    <dd>
-    Same as <a href="../modules/ecs.html#System:callback">callback</a>, but will check every system against a filter before calling the callback. </p>
-
-<p> <a href="../modules/ecs.html#System:filter">filter</a> is a function that receive the arguments <code>filter(system, name, e, &hellip;)</code>, and returns a boolean.
- It will be called on each system before emitting the callback on it; if the filter returns false, the callback will not
- be called on this system and its subsystems.</p>
-
-<p> Complexity: O(1) per system
-
-    </ul>
-    </ul>
-    </ul>
-    </ul>
-
-    <h3>Parameters:</h3>
-    <ul>
-          <li><span class="parameter">filter</span>
-              <span class="types"><span class="type">function</span></span>
-           filter function
-          </li>
-          <li><span class="parameter">name</span>
-              <span class="types"><a class="type" href="https://www.lua.org/manual/5.1/manual.html#5.4">string</a></span>
-           name of the callback
-          </li>
-          <li><span class="parameter">e</span>
-              <span class="types"><a class="type" href="../modules/ecs.html#Entity_objects">Entity</a></span>
-           the entity to perform the callback on
-          </li>
-          <li><span class="parameter">...</span>
-           other arguments to pass to the callback
-          </li>
-    </ul>
-
-
-
-
-
 </dd>
     <dt>
     <a name = "System:emit"></a>
@@ -1899,44 +1849,6 @@ its sibling systems (i.e. completely stop the propagation of the event).</li>
 
 
 
-</dd>
-    <dt>
-    <a name = "System:emitFiltered"></a>
-    <strong>System:emitFiltered (filter, name, ...)</strong>
-    </dt>
-    <dd>
-    Same as <a href="../modules/ecs.html#System:emit">emit</a>, but will check every system against a filter before calling the event. </p>
-
-<p> <a href="../modules/ecs.html#System:filter">filter</a> is a function that receive the arguments <code>filter(system, name, &hellip;)</code>, and returns a boolean.
- It will be called on each system before emitting the event on it; if the filter returns false, the event will not
- be emitted to this system and its subsystems.</p>
-
-<p> Complexity: O(1) per system
-
-    </ul>
-    </ul>
-    </ul>
-    </ul>
-
-    <h3>Parameters:</h3>
-    <ul>
-          <li><span class="parameter">filter</span>
-              <span class="types"><span class="type">function</span></span>
-           filter function
-          </li>
-          <li><span class="parameter">name</span>
-              <span class="types"><a class="type" href="https://www.lua.org/manual/5.1/manual.html#5.4">string</a></span>
-           name of the callback
-          </li>
-          <li><span class="parameter">...</span>
-           other arguments to pass to the callback
-          </li>
-    </ul>
-
-
-
-
-
 </dd>
     <dt>
     <a name = "System:destroy"></a>
@@ -1964,7 +1876,7 @@ its sibling systems (i.e. completely stop the propagation of the event).</li>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/input.html b/docs/modules/input.html
index 13173b4..42552b9 100644
--- a/docs/modules/input.html
+++ b/docs/modules/input.html
@@ -1723,7 +1723,7 @@ player.fire.event:bind(<span class="string">"pressed"</span>, <span class="keywo
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/ldtk.html b/docs/modules/ldtk.html
index cfa6047..4dc42bd 100644
--- a/docs/modules/ldtk.html
+++ b/docs/modules/ldtk.html
@@ -2066,7 +2066,7 @@ end
     Level background. </p>
 
 <p> If there is a background image, <code>background.image</code> contains a table <code>{image=image, x=number, y=number, sx=number, sy=number}</code>
- where <a href="../modules/ldtk.html#Tileset.image">image</a> is the LÖVE image (or image filepath if LÖVE not available) <a href="../modules/ldtk.html#Tile.x">x</a> and <a href="../modules/ldtk.html#Tile.y">y</a> are the top-left position,
+ where <a href="../modules/ldtk.html#Tileset.image">image</a> is the LÖVE image (or image filepath if LÖVE not available) <a href="../modules/ldtk.html#Entity.x">x</a> and <a href="../modules/ldtk.html#Tile.y">y</a> are the top-left position,
  and <a href="../modules/ldtk.html#Entity.sx">sx</a> and <a href="../modules/ldtk.html#Entity.sy">sy</a> the horizontal and vertical scale factors.
 
     </ul>
@@ -2142,7 +2142,7 @@ end
 <li>Enum are converted into a Lua string giving the currently selected enum value.</li>
 <li>Filepath are converted into a Lua string giving the file path.</li>
 <li>Arrays are converted into a Lua table with the elements in it as a list.</li>
-<li>Points are converted into a Lua table with the fields <a href="../modules/ldtk.html#Tile.x">x</a> and <a href="../modules/ldtk.html#Tile.y">y</a>, in pixels: <code>{ x=number, y=number }</code>.</li>
+<li>Points are converted into a Lua table with the fields <a href="../modules/ldtk.html#Entity.x">x</a> and <a href="../modules/ldtk.html#Tile.y">y</a>, in pixels: <code>{ x=number, y=number }</code>.</li>
 <li>Colors are converted into a Lua table with the red, green and blue components in [0-1] as a list: <code>{r,g,b}</code>.</li>
 <li>Tiles are converted into a Lua table { tileset = associated tileset object, quad = associated quad } where <a href="../modules/ldtk.html#Tile.quad">quad</a> is a LÖVE Quad if LÖVE is available, otherwise a table <code>{ x, y, width, height }</code>.</li>
 <li>EntityRef are converted into a Lua table { level = level, layerIid = layer IID, entityIid = entity IID, entity = see explanation }. If the entity being refernced belongs to another level and this level is not loaded, <code>entity</code> will be nil; otherwise (same level or the other level is also loaded), it will contain the entity.</li>
@@ -2170,7 +2170,7 @@ end
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/scene.html b/docs/modules/scene.html
index cf100b5..0b9bdf6 100644
--- a/docs/modules/scene.html
+++ b/docs/modules/scene.html
@@ -703,7 +703,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/signal.html b/docs/modules/signal.html
index de7aeb6..8b93b1c 100644
--- a/docs/modules/signal.html
+++ b/docs/modules/signal.html
@@ -788,7 +788,7 @@ signal.event:bind(&quot;keypressed&quot;, function(key, scancode) print(&quot;pr
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/timer.html b/docs/modules/timer.html
index 7e71ada..9cf1428 100644
--- a/docs/modules/timer.html
+++ b/docs/modules/timer.html
@@ -1154,7 +1154,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/ubiquitousse.html b/docs/modules/ubiquitousse.html
index ba1a602..5c59f85 100644
--- a/docs/modules/ubiquitousse.html
+++ b/docs/modules/ubiquitousse.html
@@ -394,7 +394,7 @@ the repository to save you a few seconds.</p>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/modules/util.html b/docs/modules/util.html
index a2bdff5..67f3da4 100644
--- a/docs/modules/util.html
+++ b/docs/modules/util.html
@@ -785,7 +785,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/topics/LICENSE.html b/docs/topics/LICENSE.html
index bbab437..6188111 100644
--- a/docs/topics/LICENSE.html
+++ b/docs/topics/LICENSE.html
@@ -65,7 +65,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/docs/topics/README.md.html b/docs/topics/README.md.html
index 3397497..1371bcf 100644
--- a/docs/topics/README.md.html
+++ b/docs/topics/README.md.html
@@ -87,7 +87,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2022-10-13 00:23:58 </i>
+<i style="float:right;">Last updated 2022-10-11 19:12:05 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>
diff --git a/ecs/commonsystems/children.can b/ecs/children.can
similarity index 100%
rename from ecs/commonsystems/children.can
rename to ecs/children.can
diff --git a/ecs/children.lua b/ecs/children.lua
new file mode 100644
index 0000000..c8b6d5b
--- /dev/null
+++ b/ecs/children.lua
@@ -0,0 +1,33 @@
+return { -- ./ecs/children.can:12
+["name"] = "children", -- ./ecs/children.can:13
+["filter"] = true, -- ./ecs/children.can:14
+["onAdd"] = function(self, e) -- ./ecs/children.can:15
+if not e["children"] then -- ./ecs/children.can:16
+e["children"] = {} -- ./ecs/children.can:16
+end -- ./ecs/children.can:16
+if e["parent"] then -- ./ecs/children.can:17
+local parentchildren -- ./ecs/children.can:18
+parentchildren = e["parent"]["children"] -- ./ecs/children.can:18
+table["insert"](parentchildren, e) -- ./ecs/children.can:19
+end -- ./ecs/children.can:19
+for _, o in ipairs(e["children"]) do -- ./ecs/children.can:21
+o["parent"] = e -- ./ecs/children.can:22
+self["world"]:add(o) -- ./ecs/children.can:23
+end -- ./ecs/children.can:23
+end, -- ./ecs/children.can:23
+["onRemove"] = function(self, e) -- ./ecs/children.can:26
+for i = # e["children"], 1, - 1 do -- ./ecs/children.can:27
+self["world"]:remove(e["children"][i]) -- ./ecs/children.can:28
+end -- ./ecs/children.can:28
+if e["parent"] then -- ./ecs/children.can:30
+local parentchildren -- ./ecs/children.can:31
+parentchildren = e["parent"]["children"] -- ./ecs/children.can:31
+for i = # parentchildren, 1, - 1 do -- ./ecs/children.can:32
+if parentchildren[i] == e then -- ./ecs/children.can:33
+table["remove"](parentchildren, i) -- ./ecs/children.can:34
+break -- ./ecs/children.can:35
+end -- ./ecs/children.can:35
+end -- ./ecs/children.can:35
+end -- ./ecs/children.can:35
+end -- ./ecs/children.can:35
+} -- ./ecs/children.can:35
diff --git a/ecs/commonsystems/children.lua b/ecs/commonsystems/children.lua
deleted file mode 100644
index 843806e..0000000
--- a/ecs/commonsystems/children.lua
+++ /dev/null
@@ -1,33 +0,0 @@
-return { -- ./ecs/commonsystems/children.can:12
-["name"] = "children", -- ./ecs/commonsystems/children.can:13
-["filter"] = true, -- ./ecs/commonsystems/children.can:14
-["onAdd"] = function(self, e) -- ./ecs/commonsystems/children.can:15
-if not e["children"] then -- ./ecs/commonsystems/children.can:16
-e["children"] = {} -- ./ecs/commonsystems/children.can:16
-end -- ./ecs/commonsystems/children.can:16
-if e["parent"] then -- ./ecs/commonsystems/children.can:17
-local parentchildren -- ./ecs/commonsystems/children.can:18
-parentchildren = e["parent"]["children"] -- ./ecs/commonsystems/children.can:18
-table["insert"](parentchildren, e) -- ./ecs/commonsystems/children.can:19
-end -- ./ecs/commonsystems/children.can:19
-for _, o in ipairs(e["children"]) do -- ./ecs/commonsystems/children.can:21
-o["parent"] = e -- ./ecs/commonsystems/children.can:22
-self["world"]:add(o) -- ./ecs/commonsystems/children.can:23
-end -- ./ecs/commonsystems/children.can:23
-end, -- ./ecs/commonsystems/children.can:23
-["onRemove"] = function(self, e) -- ./ecs/commonsystems/children.can:26
-for i = # e["children"], 1, - 1 do -- ./ecs/commonsystems/children.can:27
-self["world"]:remove(e["children"][i]) -- ./ecs/commonsystems/children.can:28
-end -- ./ecs/commonsystems/children.can:28
-if e["parent"] then -- ./ecs/commonsystems/children.can:30
-local parentchildren -- ./ecs/commonsystems/children.can:31
-parentchildren = e["parent"]["children"] -- ./ecs/commonsystems/children.can:31
-for i = # parentchildren, 1, - 1 do -- ./ecs/commonsystems/children.can:32
-if parentchildren[i] == e then -- ./ecs/commonsystems/children.can:33
-table["remove"](parentchildren, i) -- ./ecs/commonsystems/children.can:34
-break -- ./ecs/commonsystems/children.can:35
-end -- ./ecs/commonsystems/children.can:35
-end -- ./ecs/commonsystems/children.can:35
-end -- ./ecs/commonsystems/children.can:35
-end -- ./ecs/commonsystems/children.can:35
-} -- ./ecs/commonsystems/children.can:35
diff --git a/ecs/commonsystems/timer.lua b/ecs/commonsystems/timer.lua
deleted file mode 100644
index 299a20b..0000000
--- a/ecs/commonsystems/timer.lua
+++ /dev/null
@@ -1,23 +0,0 @@
-local timer -- ./ecs/commonsystems/timer.can:4
-timer = require((...):match("^(.-)ecs%.timer") .. "scene") -- ./ecs/commonsystems/timer.can:4
-return { -- ./ecs/commonsystems/timer.can:6
-["name"] = "timer", -- ./ecs/commonsystems/timer.can:7
-["filter"] = "timer", -- ./ecs/commonsystems/timer.can:8
-["default"] = {}, -- ./ecs/commonsystems/timer.can:9
-["process"] = function(self, e, t, dt) -- ./ecs/commonsystems/timer.can:12
-t:update(dt) -- ./ecs/commonsystems/timer.can:13
-if t:dead() then -- ./ecs/commonsystems/timer.can:14
-self["world"]:remove(t["entity"]) -- ./ecs/commonsystems/timer.can:15
-end -- ./ecs/commonsystems/timer.can:15
-end, -- ./ecs/commonsystems/timer.can:15
-["run"] = function(self, func) -- ./ecs/commonsystems/timer.can:20
-local t = timer["run"](func) -- ./ecs/commonsystems/timer.can:21
-self["world"]:add({ ["timer"] = t }) -- ./ecs/commonsystems/timer.can:23
-return t -- ./ecs/commonsystems/timer.can:25
-end, -- ./ecs/commonsystems/timer.can:25
-["tween"] = function(self, duration, tbl, to, method) -- ./ecs/commonsystems/timer.can:28
-local t = timer["tween"](duration, tbl, to, method) -- ./ecs/commonsystems/timer.can:29
-self["world"]:add({ ["timer"] = t }) -- ./ecs/commonsystems/timer.can:31
-return t -- ./ecs/commonsystems/timer.can:33
-end -- ./ecs/commonsystems/timer.can:33
-} -- ./ecs/commonsystems/timer.can:33
diff --git a/ecs/ecs.can b/ecs/ecs.can
index d64ec67..c61d5dd 100644
--- a/ecs/ecs.can
+++ b/ecs/ecs.can
@@ -144,10 +144,6 @@ let copy = (a, b, cache={})
 	end
 end
 
---- Self descriptive
-let alwaysTrue = () return true end
-let alwaysFalse = () return false end
-
 --- Skip list implementation ---
 -- Well technically it's a conbination of a skip list (for ordering) and a hash map (for that sweet O(1) search). Takes more memory but oh so efficient.
 
@@ -763,30 +759,14 @@ let system_mt = {
 	-- @tparam Entity e the entity to perform the callback on
 	-- @param ... other arguments to pass to the callback
 	callback = :(name, e, ...)
-		return @callbackFiltered(alwaysTrue, name, e, ...)
-	end,
-	--- Same as `callback`, but will check every system against a filter before calling the callback.
-	--
-	-- `filter` is a function that receive the arguments `filter(system, name, e, ...)`, and returns a boolean.
-	-- It will be called on each system before emitting the callback on it; if the filter returns false, the callback will not
-	-- be called on this system and its subsystems.
-	--
-	-- Complexity: O(1) per system
-	-- @tparam function filter filter function
-	-- @tparam string name name of the callback
-	-- @tparam Entity e the entity to perform the callback on
-	-- @param ... other arguments to pass to the callback
-	callbackFiltered = :(filter, name, e, ...)
-		if filter(@, name, e, ...) then
-			-- call callback
-			if @_has[e] and @[name] then
-				@[name](@, e, e[@component], ...)
-			end
-			-- callback on subsystems (if it wasn't removed during the callback)
-			if @_has[e] then
-				for _, ss in ipairs(@systems) do
-					ss:callbackFiltered(filter, name, e, ...)
-				end
+		-- call callback
+		if @_has[e] and @[name] then
+			@[name](@, e, e[@component], ...)
+		end
+		-- callback on subsystems (if it wasn't removed during the callback)
+		if @_has[e] then
+			for _, ss in ipairs(@systems) do
+				ss:callback(name, e, ...)
 			end
 		end
 	end,
@@ -813,34 +793,19 @@ let system_mt = {
 	-- @tparam string name name of the callback
 	-- @param ... other arguments to pass to the callback
 	emit = :(name, ...)
-		return @emitFiltered(alwaysTrue, name, ...)
-	end,
-	--- Same as `emit`, but will check every system against a filter before calling the event.
-	--
-	-- `filter` is a function that receive the arguments `filter(system, name, ...)`, and returns a boolean.
-	-- It will be called on each system before emitting the event on it; if the filter returns false, the event will not
-	-- be emitted to this system and its subsystems.
-	--
-	-- Complexity: O(1) per system
-	-- @tparam function filter filter function
-	-- @tparam string name name of the callback
-	-- @param ... other arguments to pass to the callback
-	emitFiltered = :(filter, name, ...)
-		if filter(@, name, ...) then
-			-- call event
-			let status
-			if @[name] then
-				status = @[name](@, ...)
-			end
-			-- call event on subsystems (if it wasn't stopped or captured)
-			if status ~= "stop" and status ~= "capture" then
-				for _, s in ipairs(@systems) do
-					status = s:emitFiltered(filter, name, ...)
-					if status == "capture" then break end
-				end
-			end
-			return status
+		-- call event
+		let status
+		if @[name] then
+			status = @[name](@, ...)
 		end
+		-- call event on subsystems (if it wasn't stopped or captured)
+		if status ~= "stop" and status ~= "capture" then
+			for _, s in ipairs(@systems) do
+				status = s:emit(name, ...)
+				if status == "capture" then break end
+			end
+		end
+		return status
 	end,
 	--- Remove all the entities and subsystems in this system.
 	-- Complexity: O(entityCount) per system
@@ -850,6 +815,10 @@ let system_mt = {
 	end,
 }
 
+--- Self descriptive
+let alwaysTrue = () return true end
+let alwaysFalse = () return false end
+
 --- Recursively instanciate a list of systems for a world:
 -- * create their self table with instance fields set
 -- * create a field with their name in world.s (if name defined)
diff --git a/ecs/ecs.lua b/ecs/ecs.lua
index bbf13b0..e558f77 100644
--- a/ecs/ecs.lua
+++ b/ecs/ecs.lua
@@ -49,504 +49,494 @@ b[k] = v -- ./ecs/ecs.can:142
 end -- ./ecs/ecs.can:142
 end -- ./ecs/ecs.can:142
 end -- ./ecs/ecs.can:142
-local alwaysTrue -- ./ecs/ecs.can:148
-alwaysTrue = function() -- ./ecs/ecs.can:148
-return true -- ./ecs/ecs.can:148
-end -- ./ecs/ecs.can:148
-local alwaysFalse -- ./ecs/ecs.can:149
-alwaysFalse = function() -- ./ecs/ecs.can:149
-return false -- ./ecs/ecs.can:149
-end -- ./ecs/ecs.can:149
-local head -- ./ecs/ecs.can:155
-head = {} -- ./ecs/ecs.can:155
-local skipNew -- ./ecs/ecs.can:158
-skipNew = function() -- ./ecs/ecs.can:158
-local s -- ./ecs/ecs.can:159
-s = { -- ./ecs/ecs.can:159
-["first"] = { -- ./ecs/ecs.can:162
-head, -- ./ecs/ecs.can:162
-nil -- ./ecs/ecs.can:162
-}, -- ./ecs/ecs.can:162
-["firstBase"] = nil, -- ./ecs/ecs.can:164
-["previous"] = { {} }, -- ./ecs/ecs.can:168
-["nLayers"] = 1, -- ./ecs/ecs.can:170
-["n"] = 0 -- ./ecs/ecs.can:172
-} -- ./ecs/ecs.can:172
-s["firstBase"] = s["first"] -- ./ecs/ecs.can:174
-return s -- ./ecs/ecs.can:175
-end -- ./ecs/ecs.can:175
-local nextEntity -- ./ecs/ecs.can:179
-nextEntity = function(s) -- ./ecs/ecs.can:179
-if s[1] then -- ./ecs/ecs.can:180
-local var -- ./ecs/ecs.can:181
-var = s[1][1] -- ./ecs/ecs.can:181
-s[1] = s[1][2] -- ./ecs/ecs.can:182
-return var -- ./ecs/ecs.can:183
-else -- ./ecs/ecs.can:183
-return nil -- ./ecs/ecs.can:185
-end -- ./ecs/ecs.can:185
-end -- ./ecs/ecs.can:185
-local skipIter -- ./ecs/ecs.can:190
-skipIter = function(self) -- ./ecs/ecs.can:190
-return nextEntity, { self["firstBase"][2] } -- ./ecs/ecs.can:191
-end -- ./ecs/ecs.can:191
-local skipAddLayers -- ./ecs/ecs.can:197
-skipAddLayers = function(self) -- ./ecs/ecs.can:197
-while self["n"] > 2 ^ self["nLayers"] do -- ./ecs/ecs.can:198
-self["first"] = { -- ./ecs/ecs.can:199
-head, -- ./ecs/ecs.can:199
-nil, -- ./ecs/ecs.can:199
-self["first"] -- ./ecs/ecs.can:199
-} -- ./ecs/ecs.can:199
-table["insert"](self["previous"], {}) -- ./ecs/ecs.can:200
-self["nLayers"] = self["nLayers"] + (1) -- ./ecs/ecs.can:201
-end -- ./ecs/ecs.can:201
-end -- ./ecs/ecs.can:201
-local coinFlip -- ./ecs/ecs.can:206
-coinFlip = function() -- ./ecs/ecs.can:206
-return math["random"](0, 1) == 1 -- ./ecs/ecs.can:207
-end -- ./ecs/ecs.can:207
-local skipInsert -- ./ecs/ecs.can:212
-skipInsert = function(self, system, e) -- ./ecs/ecs.can:212
-local prevLayer -- ./ecs/ecs.can:214
-prevLayer = {} -- ./ecs/ecs.can:214
-local prev -- ./ecs/ecs.can:215
-prev = self["first"] -- ./ecs/ecs.can:215
-for i = self["nLayers"], 1, - 1 do -- ./ecs/ecs.can:216
-while true do -- ./ecs/ecs.can:217
-if prev[2] == nil or system:compare(e, prev[2][1]) then -- ./ecs/ecs.can:219
-prevLayer[i] = prev -- ./ecs/ecs.can:220
-if prev[3] then -- ./ecs/ecs.can:222
-prev = prev[3] -- ./ecs/ecs.can:223
-break -- ./ecs/ecs.can:224
-end -- ./ecs/ecs.can:224
-break -- ./ecs/ecs.can:226
-else -- ./ecs/ecs.can:226
-prev = prev[2] -- ./ecs/ecs.can:229
-end -- ./ecs/ecs.can:229
-end -- ./ecs/ecs.can:229
-end -- ./ecs/ecs.can:229
-local inLowerLayer -- ./ecs/ecs.can:234
-for i = 1, self["nLayers"] do -- ./ecs/ecs.can:235
-prev = prevLayer[i] -- ./ecs/ecs.can:236
-if i == 1 or coinFlip() then -- ./ecs/ecs.can:237
-local nxt -- ./ecs/ecs.can:238
-nxt = prev[2] -- ./ecs/ecs.can:238
-prev[2] = { -- ./ecs/ecs.can:239
-e, -- ./ecs/ecs.can:239
-nxt, -- ./ecs/ecs.can:239
-inLowerLayer -- ./ecs/ecs.can:239
-} -- ./ecs/ecs.can:239
-self["previous"][i][e] = prev -- ./ecs/ecs.can:240
-if nxt then -- ./ecs/ecs.can:241
-self["previous"][i][nxt[1]] = prev[2] -- ./ecs/ecs.can:242
+local head -- ./ecs/ecs.can:151
+head = {} -- ./ecs/ecs.can:151
+local skipNew -- ./ecs/ecs.can:154
+skipNew = function() -- ./ecs/ecs.can:154
+local s -- ./ecs/ecs.can:155
+s = { -- ./ecs/ecs.can:155
+["first"] = { -- ./ecs/ecs.can:158
+head, -- ./ecs/ecs.can:158
+nil -- ./ecs/ecs.can:158
+}, -- ./ecs/ecs.can:158
+["firstBase"] = nil, -- ./ecs/ecs.can:160
+["previous"] = { {} }, -- ./ecs/ecs.can:164
+["nLayers"] = 1, -- ./ecs/ecs.can:166
+["n"] = 0 -- ./ecs/ecs.can:168
+} -- ./ecs/ecs.can:168
+s["firstBase"] = s["first"] -- ./ecs/ecs.can:170
+return s -- ./ecs/ecs.can:171
+end -- ./ecs/ecs.can:171
+local nextEntity -- ./ecs/ecs.can:175
+nextEntity = function(s) -- ./ecs/ecs.can:175
+if s[1] then -- ./ecs/ecs.can:176
+local var -- ./ecs/ecs.can:177
+var = s[1][1] -- ./ecs/ecs.can:177
+s[1] = s[1][2] -- ./ecs/ecs.can:178
+return var -- ./ecs/ecs.can:179
+else -- ./ecs/ecs.can:179
+return nil -- ./ecs/ecs.can:181
+end -- ./ecs/ecs.can:181
+end -- ./ecs/ecs.can:181
+local skipIter -- ./ecs/ecs.can:186
+skipIter = function(self) -- ./ecs/ecs.can:186
+return nextEntity, { self["firstBase"][2] } -- ./ecs/ecs.can:187
+end -- ./ecs/ecs.can:187
+local skipAddLayers -- ./ecs/ecs.can:193
+skipAddLayers = function(self) -- ./ecs/ecs.can:193
+while self["n"] > 2 ^ self["nLayers"] do -- ./ecs/ecs.can:194
+self["first"] = { -- ./ecs/ecs.can:195
+head, -- ./ecs/ecs.can:195
+nil, -- ./ecs/ecs.can:195
+self["first"] -- ./ecs/ecs.can:195
+} -- ./ecs/ecs.can:195
+table["insert"](self["previous"], {}) -- ./ecs/ecs.can:196
+self["nLayers"] = self["nLayers"] + (1) -- ./ecs/ecs.can:197
+end -- ./ecs/ecs.can:197
+end -- ./ecs/ecs.can:197
+local coinFlip -- ./ecs/ecs.can:202
+coinFlip = function() -- ./ecs/ecs.can:202
+return math["random"](0, 1) == 1 -- ./ecs/ecs.can:203
+end -- ./ecs/ecs.can:203
+local skipInsert -- ./ecs/ecs.can:208
+skipInsert = function(self, system, e) -- ./ecs/ecs.can:208
+local prevLayer -- ./ecs/ecs.can:210
+prevLayer = {} -- ./ecs/ecs.can:210
+local prev -- ./ecs/ecs.can:211
+prev = self["first"] -- ./ecs/ecs.can:211
+for i = self["nLayers"], 1, - 1 do -- ./ecs/ecs.can:212
+while true do -- ./ecs/ecs.can:213
+if prev[2] == nil or system:compare(e, prev[2][1]) then -- ./ecs/ecs.can:215
+prevLayer[i] = prev -- ./ecs/ecs.can:216
+if prev[3] then -- ./ecs/ecs.can:218
+prev = prev[3] -- ./ecs/ecs.can:219
+break -- ./ecs/ecs.can:220
+end -- ./ecs/ecs.can:220
+break -- ./ecs/ecs.can:222
+else -- ./ecs/ecs.can:222
+prev = prev[2] -- ./ecs/ecs.can:225
+end -- ./ecs/ecs.can:225
+end -- ./ecs/ecs.can:225
+end -- ./ecs/ecs.can:225
+local inLowerLayer -- ./ecs/ecs.can:230
+for i = 1, self["nLayers"] do -- ./ecs/ecs.can:231
+prev = prevLayer[i] -- ./ecs/ecs.can:232
+if i == 1 or coinFlip() then -- ./ecs/ecs.can:233
+local nxt -- ./ecs/ecs.can:234
+nxt = prev[2] -- ./ecs/ecs.can:234
+prev[2] = { -- ./ecs/ecs.can:235
+e, -- ./ecs/ecs.can:235
+nxt, -- ./ecs/ecs.can:235
+inLowerLayer -- ./ecs/ecs.can:235
+} -- ./ecs/ecs.can:235
+self["previous"][i][e] = prev -- ./ecs/ecs.can:236
+if nxt then -- ./ecs/ecs.can:237
+self["previous"][i][nxt[1]] = prev[2] -- ./ecs/ecs.can:238
+end -- ./ecs/ecs.can:238
+inLowerLayer = prev[2] -- ./ecs/ecs.can:240
+else -- ./ecs/ecs.can:240
+break -- ./ecs/ecs.can:242
 end -- ./ecs/ecs.can:242
-inLowerLayer = prev[2] -- ./ecs/ecs.can:244
-else -- ./ecs/ecs.can:244
-break -- ./ecs/ecs.can:246
-end -- ./ecs/ecs.can:246
-end -- ./ecs/ecs.can:246
-self["n"] = self["n"] + (1) -- ./ecs/ecs.can:249
-end -- ./ecs/ecs.can:249
-local skipDelete -- ./ecs/ecs.can:255
-skipDelete = function(self, e) -- ./ecs/ecs.can:255
-for i = 1, self["nLayers"] do -- ./ecs/ecs.can:257
-local previous -- ./ecs/ecs.can:258
-previous = self["previous"][i] -- ./ecs/ecs.can:258
-if previous[e] then -- ./ecs/ecs.can:259
-local prev -- ./ecs/ecs.can:260
-prev = previous[e] -- ./ecs/ecs.can:260
-prev[2] = prev[2][2] -- ./ecs/ecs.can:261
-previous[e] = nil -- ./ecs/ecs.can:262
-if prev[2] then -- ./ecs/ecs.can:263
-previous[prev[2][1]] = prev -- ./ecs/ecs.can:264
-end -- ./ecs/ecs.can:264
-else -- ./ecs/ecs.can:264
-break -- ./ecs/ecs.can:267
-end -- ./ecs/ecs.can:267
-end -- ./ecs/ecs.can:267
-self["n"] = self["n"] - (1) -- ./ecs/ecs.can:270
-end -- ./ecs/ecs.can:270
-local skipReorder -- ./ecs/ecs.can:276
-skipReorder = function(self, system, e) -- ./ecs/ecs.can:276
-skipDelete(self, e) -- ./ecs/ecs.can:277
-skipInsert(self, system, e) -- ./ecs/ecs.can:278
-end -- ./ecs/ecs.can:278
-local skipIndex -- ./ecs/ecs.can:283
-skipIndex = function(self, i) -- ./ecs/ecs.can:283
-local n = 1 -- ./ecs/ecs.can:284
-for e in skipIter(self) do -- ./ecs/ecs.can:285
-if n == i then -- ./ecs/ecs.can:286
-return e -- ./ecs/ecs.can:287
+end -- ./ecs/ecs.can:242
+self["n"] = self["n"] + (1) -- ./ecs/ecs.can:245
+end -- ./ecs/ecs.can:245
+local skipDelete -- ./ecs/ecs.can:251
+skipDelete = function(self, e) -- ./ecs/ecs.can:251
+for i = 1, self["nLayers"] do -- ./ecs/ecs.can:253
+local previous -- ./ecs/ecs.can:254
+previous = self["previous"][i] -- ./ecs/ecs.can:254
+if previous[e] then -- ./ecs/ecs.can:255
+local prev -- ./ecs/ecs.can:256
+prev = previous[e] -- ./ecs/ecs.can:256
+prev[2] = prev[2][2] -- ./ecs/ecs.can:257
+previous[e] = nil -- ./ecs/ecs.can:258
+if prev[2] then -- ./ecs/ecs.can:259
+previous[prev[2][1]] = prev -- ./ecs/ecs.can:260
+end -- ./ecs/ecs.can:260
+else -- ./ecs/ecs.can:260
+break -- ./ecs/ecs.can:263
+end -- ./ecs/ecs.can:263
+end -- ./ecs/ecs.can:263
+self["n"] = self["n"] - (1) -- ./ecs/ecs.can:266
+end -- ./ecs/ecs.can:266
+local skipReorder -- ./ecs/ecs.can:272
+skipReorder = function(self, system, e) -- ./ecs/ecs.can:272
+skipDelete(self, e) -- ./ecs/ecs.can:273
+skipInsert(self, system, e) -- ./ecs/ecs.can:274
+end -- ./ecs/ecs.can:274
+local skipIndex -- ./ecs/ecs.can:279
+skipIndex = function(self, i) -- ./ecs/ecs.can:279
+local n = 1 -- ./ecs/ecs.can:280
+for e in skipIter(self) do -- ./ecs/ecs.can:281
+if n == i then -- ./ecs/ecs.can:282
+return e -- ./ecs/ecs.can:283
+end -- ./ecs/ecs.can:283
+n = n + (1) -- ./ecs/ecs.can:285
+end -- ./ecs/ecs.can:285
+return nil -- ./ecs/ecs.can:287
 end -- ./ecs/ecs.can:287
-n = n + (1) -- ./ecs/ecs.can:289
-end -- ./ecs/ecs.can:289
-return nil -- ./ecs/ecs.can:291
-end -- ./ecs/ecs.can:291
-local system_mt -- ./ecs/ecs.can:355
-system_mt = { -- ./ecs/ecs.can:355
-["name"] = nil, -- ./ecs/ecs.can:369
-["systems"] = nil, -- ./ecs/ecs.can:377
-["interval"] = false, -- ./ecs/ecs.can:383
-["active"] = true, -- ./ecs/ecs.can:387
-["visible"] = true, -- ./ecs/ecs.can:391
-["component"] = nil, -- ./ecs/ecs.can:398
-["default"] = nil, -- ./ecs/ecs.can:408
-["filter"] = function(self, e) -- ./ecs/ecs.can:429
-return false -- ./ecs/ecs.can:429
-end, -- ./ecs/ecs.can:429
-["compare"] = function(self, e1, e2) -- ./ecs/ecs.can:441
-return true -- ./ecs/ecs.can:441
-end, -- ./ecs/ecs.can:441
-["onAdd"] = function(self, e, c) -- ./ecs/ecs.can:447
- -- ./ecs/ecs.can:447
-end, -- ./ecs/ecs.can:447
-["onRemove"] = function(self, e, c) -- ./ecs/ecs.can:452
- -- ./ecs/ecs.can:452
-end, -- ./ecs/ecs.can:452
-["onInstance"] = function(self) -- ./ecs/ecs.can:455
+local system_mt -- ./ecs/ecs.can:351
+system_mt = { -- ./ecs/ecs.can:351
+["name"] = nil, -- ./ecs/ecs.can:365
+["systems"] = nil, -- ./ecs/ecs.can:373
+["interval"] = false, -- ./ecs/ecs.can:379
+["active"] = true, -- ./ecs/ecs.can:383
+["visible"] = true, -- ./ecs/ecs.can:387
+["component"] = nil, -- ./ecs/ecs.can:394
+["default"] = nil, -- ./ecs/ecs.can:404
+["filter"] = function(self, e) -- ./ecs/ecs.can:425
+return false -- ./ecs/ecs.can:425
+end, -- ./ecs/ecs.can:425
+["compare"] = function(self, e1, e2) -- ./ecs/ecs.can:437
+return true -- ./ecs/ecs.can:437
+end, -- ./ecs/ecs.can:437
+["onAdd"] = function(self, e, c) -- ./ecs/ecs.can:443
+ -- ./ecs/ecs.can:443
+end, -- ./ecs/ecs.can:443
+["onRemove"] = function(self, e, c) -- ./ecs/ecs.can:448
+ -- ./ecs/ecs.can:448
+end, -- ./ecs/ecs.can:448
+["onInstance"] = function(self) -- ./ecs/ecs.can:451
+ -- ./ecs/ecs.can:451
+end, -- ./ecs/ecs.can:451
+["onAddToWorld"] = function(self, world) -- ./ecs/ecs.can:455
  -- ./ecs/ecs.can:455
 end, -- ./ecs/ecs.can:455
-["onAddToWorld"] = function(self, world) -- ./ecs/ecs.can:459
+["onRemoveFromWorld"] = function(self, world) -- ./ecs/ecs.can:459
  -- ./ecs/ecs.can:459
 end, -- ./ecs/ecs.can:459
-["onRemoveFromWorld"] = function(self, world) -- ./ecs/ecs.can:463
- -- ./ecs/ecs.can:463
-end, -- ./ecs/ecs.can:463
-["onDestroy"] = function(self) -- ./ecs/ecs.can:466
- -- ./ecs/ecs.can:466
-end, -- ./ecs/ecs.can:466
-["onUpdate"] = function(self, dt) -- ./ecs/ecs.can:471
+["onDestroy"] = function(self) -- ./ecs/ecs.can:462
+ -- ./ecs/ecs.can:462
+end, -- ./ecs/ecs.can:462
+["onUpdate"] = function(self, dt) -- ./ecs/ecs.can:467
+ -- ./ecs/ecs.can:467
+end, -- ./ecs/ecs.can:467
+["onDraw"] = function(self) -- ./ecs/ecs.can:471
  -- ./ecs/ecs.can:471
 end, -- ./ecs/ecs.can:471
-["onDraw"] = function(self) -- ./ecs/ecs.can:475
- -- ./ecs/ecs.can:475
-end, -- ./ecs/ecs.can:475
-["process"] = function(self, e, c, dt) -- ./ecs/ecs.can:482
- -- ./ecs/ecs.can:482
-end, -- ./ecs/ecs.can:482
-["render"] = function(self, e, c) -- ./ecs/ecs.can:488
- -- ./ecs/ecs.can:488
-end, -- ./ecs/ecs.can:488
-["onUpdateEnd"] = function(self, dt) -- ./ecs/ecs.can:493
+["process"] = function(self, e, c, dt) -- ./ecs/ecs.can:478
+ -- ./ecs/ecs.can:478
+end, -- ./ecs/ecs.can:478
+["render"] = function(self, e, c) -- ./ecs/ecs.can:484
+ -- ./ecs/ecs.can:484
+end, -- ./ecs/ecs.can:484
+["onUpdateEnd"] = function(self, dt) -- ./ecs/ecs.can:489
+ -- ./ecs/ecs.can:489
+end, -- ./ecs/ecs.can:489
+["onDrawEnd"] = function(self) -- ./ecs/ecs.can:493
  -- ./ecs/ecs.can:493
 end, -- ./ecs/ecs.can:493
-["onDrawEnd"] = function(self) -- ./ecs/ecs.can:497
- -- ./ecs/ecs.can:497
-end, -- ./ecs/ecs.can:497
-["world"] = nil, -- ./ecs/ecs.can:507
-["w"] = nil, -- ./ecs/ecs.can:511
-["entityCount"] = 0, -- ./ecs/ecs.can:515
-["s"] = nil, -- ./ecs/ecs.can:519
-["_has"] = nil, -- ./ecs/ecs.can:527
-["_waited"] = 0, -- ./ecs/ecs.can:531
-["add"] = function(self, e, ...) -- ./ecs/ecs.can:552
-if e ~= nil and not self["_has"][e] and self:filter(e) then -- ./ecs/ecs.can:553
-if self["component"] and self["default"] then -- ./ecs/ecs.can:555
-copy({ [self["component"]] = self["default"] }, e) -- ./ecs/ecs.can:556
+["world"] = nil, -- ./ecs/ecs.can:503
+["w"] = nil, -- ./ecs/ecs.can:507
+["entityCount"] = 0, -- ./ecs/ecs.can:511
+["s"] = nil, -- ./ecs/ecs.can:515
+["_has"] = nil, -- ./ecs/ecs.can:523
+["_waited"] = 0, -- ./ecs/ecs.can:527
+["add"] = function(self, e, ...) -- ./ecs/ecs.can:548
+if e ~= nil and not self["_has"][e] and self:filter(e) then -- ./ecs/ecs.can:549
+if self["component"] and self["default"] then -- ./ecs/ecs.can:551
+copy({ [self["component"]] = self["default"] }, e) -- ./ecs/ecs.can:552
+end -- ./ecs/ecs.can:552
+if self["compare"] ~= system_mt["compare"] then -- ./ecs/ecs.can:555
+skipAddLayers(self["_skiplist"]) -- ./ecs/ecs.can:556
 end -- ./ecs/ecs.can:556
-if self["compare"] ~= system_mt["compare"] then -- ./ecs/ecs.can:559
-skipAddLayers(self["_skiplist"]) -- ./ecs/ecs.can:560
-end -- ./ecs/ecs.can:560
-skipInsert(self["_skiplist"], self, e) -- ./ecs/ecs.can:563
-self["entityCount"] = self["entityCount"] + (1) -- ./ecs/ecs.can:565
-self:onAdd(e, e[self["component"]]) -- ./ecs/ecs.can:566
-if self["_has"][e] then -- ./ecs/ecs.can:568
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:569
-s:add(e) -- ./ecs/ecs.can:570
-end -- ./ecs/ecs.can:570
-end -- ./ecs/ecs.can:570
-end -- ./ecs/ecs.can:570
-if ... then -- ./ecs/ecs.can:574
-return e, self:add(...) -- ./ecs/ecs.can:575
-else -- ./ecs/ecs.can:575
-return e -- ./ecs/ecs.can:577
-end -- ./ecs/ecs.can:577
-end, -- ./ecs/ecs.can:577
-["remove"] = function(self, e, ...) -- ./ecs/ecs.can:592
-if e ~= nil then -- ./ecs/ecs.can:593
-if self["_has"][e] then -- ./ecs/ecs.can:594
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:596
-s:remove(e) -- ./ecs/ecs.can:597
-end -- ./ecs/ecs.can:597
-end -- ./ecs/ecs.can:597
-if self["_has"][e] then -- ./ecs/ecs.can:600
-skipDelete(self["_skiplist"], e) -- ./ecs/ecs.can:601
-self["entityCount"] = self["entityCount"] - (1) -- ./ecs/ecs.can:603
-self:onRemove(e, e[self["component"]]) -- ./ecs/ecs.can:604
-end -- ./ecs/ecs.can:604
-end -- ./ecs/ecs.can:604
-if ... then -- ./ecs/ecs.can:607
-return e, self:remove(...) -- ./ecs/ecs.can:608
-else -- ./ecs/ecs.can:608
-return e -- ./ecs/ecs.can:610
-end -- ./ecs/ecs.can:610
-end, -- ./ecs/ecs.can:610
-["refresh"] = function(self, e, ...) -- ./ecs/ecs.can:622
-if e ~= nil then -- ./ecs/ecs.can:623
-if not self["_has"][e] then -- ./ecs/ecs.can:624
-self:add(e) -- ./ecs/ecs.can:625
-else -- ./ecs/ecs.can:625
-if not self:filter(e) then -- ./ecs/ecs.can:627
-self:remove(e) -- ./ecs/ecs.can:628
-else -- ./ecs/ecs.can:628
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:630
-s:refresh(e) -- ./ecs/ecs.can:631
-end -- ./ecs/ecs.can:631
-end -- ./ecs/ecs.can:631
-end -- ./ecs/ecs.can:631
-end -- ./ecs/ecs.can:631
-if ... then -- ./ecs/ecs.can:636
-return e, self:refresh(...) -- ./ecs/ecs.can:637
-else -- ./ecs/ecs.can:637
-return e -- ./ecs/ecs.can:639
-end -- ./ecs/ecs.can:639
-end, -- ./ecs/ecs.can:639
-["reorder"] = function(self, e, ...) -- ./ecs/ecs.can:651
-if e ~= nil and self["_has"][e] then -- ./ecs/ecs.can:652
-skipReorder(self["_skiplist"], self, e) -- ./ecs/ecs.can:653
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:655
-s:reorder(e) -- ./ecs/ecs.can:656
-end -- ./ecs/ecs.can:656
-end -- ./ecs/ecs.can:656
-if ... then -- ./ecs/ecs.can:659
-return e, self:reorder(...) -- ./ecs/ecs.can:660
-else -- ./ecs/ecs.can:660
-return e -- ./ecs/ecs.can:662
-end -- ./ecs/ecs.can:662
-end, -- ./ecs/ecs.can:662
-["has"] = function(self, e, ...) -- ./ecs/ecs.can:671
-local has -- ./ecs/ecs.can:672
-has = e == nil or not not self["_has"][e] -- ./ecs/ecs.can:672
-if ... then -- ./ecs/ecs.can:673
-return has and self:has(...) -- ./ecs/ecs.can:674
-else -- ./ecs/ecs.can:674
-return has -- ./ecs/ecs.can:676
-end -- ./ecs/ecs.can:676
-end, -- ./ecs/ecs.can:676
-["iter"] = function(self) -- ./ecs/ecs.can:683
-return skipIter(self["_skiplist"]) -- ./ecs/ecs.can:684
-end, -- ./ecs/ecs.can:684
-["get"] = function(self, i) -- ./ecs/ecs.can:691
-return skipIndex(self["_skiplist"], i) -- ./ecs/ecs.can:692
-end, -- ./ecs/ecs.can:692
-["clear"] = function(self) -- ./ecs/ecs.can:697
-for e in skipIter(self["_skiplist"]) do -- ./ecs/ecs.can:698
-self:remove(e) -- ./ecs/ecs.can:699
-end -- ./ecs/ecs.can:699
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:701
-s:clear() -- ./ecs/ecs.can:702
-end -- ./ecs/ecs.can:702
-end, -- ./ecs/ecs.can:702
-["update"] = function(self, dt) -- ./ecs/ecs.can:711
-if self["active"] then -- ./ecs/ecs.can:712
-if self["interval"] then -- ./ecs/ecs.can:713
-self["_waited"] = self["_waited"] + (dt) -- ./ecs/ecs.can:714
-if self["_waited"] < self["interval"] then -- ./ecs/ecs.can:715
-return  -- ./ecs/ecs.can:716
-end -- ./ecs/ecs.can:716
-end -- ./ecs/ecs.can:716
-self:onUpdate(dt) -- ./ecs/ecs.can:719
-if self["process"] ~= system_mt["process"] then -- ./ecs/ecs.can:720
-for e in skipIter(self["_skiplist"]) do -- ./ecs/ecs.can:721
-self:process(e, e[self["component"]], dt) -- ./ecs/ecs.can:722
+skipInsert(self["_skiplist"], self, e) -- ./ecs/ecs.can:559
+self["entityCount"] = self["entityCount"] + (1) -- ./ecs/ecs.can:561
+self:onAdd(e, e[self["component"]]) -- ./ecs/ecs.can:562
+if self["_has"][e] then -- ./ecs/ecs.can:564
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:565
+s:add(e) -- ./ecs/ecs.can:566
+end -- ./ecs/ecs.can:566
+end -- ./ecs/ecs.can:566
+end -- ./ecs/ecs.can:566
+if ... then -- ./ecs/ecs.can:570
+return e, self:add(...) -- ./ecs/ecs.can:571
+else -- ./ecs/ecs.can:571
+return e -- ./ecs/ecs.can:573
+end -- ./ecs/ecs.can:573
+end, -- ./ecs/ecs.can:573
+["remove"] = function(self, e, ...) -- ./ecs/ecs.can:588
+if e ~= nil then -- ./ecs/ecs.can:589
+if self["_has"][e] then -- ./ecs/ecs.can:590
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:592
+s:remove(e) -- ./ecs/ecs.can:593
+end -- ./ecs/ecs.can:593
+end -- ./ecs/ecs.can:593
+if self["_has"][e] then -- ./ecs/ecs.can:596
+skipDelete(self["_skiplist"], e) -- ./ecs/ecs.can:597
+self["entityCount"] = self["entityCount"] - (1) -- ./ecs/ecs.can:599
+self:onRemove(e, e[self["component"]]) -- ./ecs/ecs.can:600
+end -- ./ecs/ecs.can:600
+end -- ./ecs/ecs.can:600
+if ... then -- ./ecs/ecs.can:603
+return e, self:remove(...) -- ./ecs/ecs.can:604
+else -- ./ecs/ecs.can:604
+return e -- ./ecs/ecs.can:606
+end -- ./ecs/ecs.can:606
+end, -- ./ecs/ecs.can:606
+["refresh"] = function(self, e, ...) -- ./ecs/ecs.can:618
+if e ~= nil then -- ./ecs/ecs.can:619
+if not self["_has"][e] then -- ./ecs/ecs.can:620
+self:add(e) -- ./ecs/ecs.can:621
+else -- ./ecs/ecs.can:621
+if not self:filter(e) then -- ./ecs/ecs.can:623
+self:remove(e) -- ./ecs/ecs.can:624
+else -- ./ecs/ecs.can:624
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:626
+s:refresh(e) -- ./ecs/ecs.can:627
+end -- ./ecs/ecs.can:627
+end -- ./ecs/ecs.can:627
+end -- ./ecs/ecs.can:627
+end -- ./ecs/ecs.can:627
+if ... then -- ./ecs/ecs.can:632
+return e, self:refresh(...) -- ./ecs/ecs.can:633
+else -- ./ecs/ecs.can:633
+return e -- ./ecs/ecs.can:635
+end -- ./ecs/ecs.can:635
+end, -- ./ecs/ecs.can:635
+["reorder"] = function(self, e, ...) -- ./ecs/ecs.can:647
+if e ~= nil and self["_has"][e] then -- ./ecs/ecs.can:648
+skipReorder(self["_skiplist"], self, e) -- ./ecs/ecs.can:649
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:651
+s:reorder(e) -- ./ecs/ecs.can:652
+end -- ./ecs/ecs.can:652
+end -- ./ecs/ecs.can:652
+if ... then -- ./ecs/ecs.can:655
+return e, self:reorder(...) -- ./ecs/ecs.can:656
+else -- ./ecs/ecs.can:656
+return e -- ./ecs/ecs.can:658
+end -- ./ecs/ecs.can:658
+end, -- ./ecs/ecs.can:658
+["has"] = function(self, e, ...) -- ./ecs/ecs.can:667
+local has -- ./ecs/ecs.can:668
+has = e == nil or not not self["_has"][e] -- ./ecs/ecs.can:668
+if ... then -- ./ecs/ecs.can:669
+return has and self:has(...) -- ./ecs/ecs.can:670
+else -- ./ecs/ecs.can:670
+return has -- ./ecs/ecs.can:672
+end -- ./ecs/ecs.can:672
+end, -- ./ecs/ecs.can:672
+["iter"] = function(self) -- ./ecs/ecs.can:679
+return skipIter(self["_skiplist"]) -- ./ecs/ecs.can:680
+end, -- ./ecs/ecs.can:680
+["get"] = function(self, i) -- ./ecs/ecs.can:687
+return skipIndex(self["_skiplist"], i) -- ./ecs/ecs.can:688
+end, -- ./ecs/ecs.can:688
+["clear"] = function(self) -- ./ecs/ecs.can:693
+for e in skipIter(self["_skiplist"]) do -- ./ecs/ecs.can:694
+self:remove(e) -- ./ecs/ecs.can:695
+end -- ./ecs/ecs.can:695
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:697
+s:clear() -- ./ecs/ecs.can:698
+end -- ./ecs/ecs.can:698
+end, -- ./ecs/ecs.can:698
+["update"] = function(self, dt) -- ./ecs/ecs.can:707
+if self["active"] then -- ./ecs/ecs.can:708
+if self["interval"] then -- ./ecs/ecs.can:709
+self["_waited"] = self["_waited"] + (dt) -- ./ecs/ecs.can:710
+if self["_waited"] < self["interval"] then -- ./ecs/ecs.can:711
+return  -- ./ecs/ecs.can:712
+end -- ./ecs/ecs.can:712
+end -- ./ecs/ecs.can:712
+self:onUpdate(dt) -- ./ecs/ecs.can:715
+if self["process"] ~= system_mt["process"] then -- ./ecs/ecs.can:716
+for e in skipIter(self["_skiplist"]) do -- ./ecs/ecs.can:717
+self:process(e, e[self["component"]], dt) -- ./ecs/ecs.can:718
+end -- ./ecs/ecs.can:718
+end -- ./ecs/ecs.can:718
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:721
+s:update(dt) -- ./ecs/ecs.can:722
 end -- ./ecs/ecs.can:722
-end -- ./ecs/ecs.can:722
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:725
-s:update(dt) -- ./ecs/ecs.can:726
+self:onUpdateEnd(dt) -- ./ecs/ecs.can:724
+if self["interval"] then -- ./ecs/ecs.can:725
+self["_waited"] = self["_waited"] - (self["interval"]) -- ./ecs/ecs.can:726
 end -- ./ecs/ecs.can:726
-self:onUpdateEnd(dt) -- ./ecs/ecs.can:728
-if self["interval"] then -- ./ecs/ecs.can:729
-self["_waited"] = self["_waited"] - (self["interval"]) -- ./ecs/ecs.can:730
-end -- ./ecs/ecs.can:730
-end -- ./ecs/ecs.can:730
-end, -- ./ecs/ecs.can:730
-["draw"] = function(self) -- ./ecs/ecs.can:739
-if self["visible"] then -- ./ecs/ecs.can:740
-self:onDraw() -- ./ecs/ecs.can:741
-if self["render"] ~= system_mt["render"] then -- ./ecs/ecs.can:742
-for e in skipIter(self["_skiplist"]) do -- ./ecs/ecs.can:743
-self:render(e, e[self["component"]]) -- ./ecs/ecs.can:744
+end -- ./ecs/ecs.can:726
+end, -- ./ecs/ecs.can:726
+["draw"] = function(self) -- ./ecs/ecs.can:735
+if self["visible"] then -- ./ecs/ecs.can:736
+self:onDraw() -- ./ecs/ecs.can:737
+if self["render"] ~= system_mt["render"] then -- ./ecs/ecs.can:738
+for e in skipIter(self["_skiplist"]) do -- ./ecs/ecs.can:739
+self:render(e, e[self["component"]]) -- ./ecs/ecs.can:740
+end -- ./ecs/ecs.can:740
+end -- ./ecs/ecs.can:740
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:743
+s:draw() -- ./ecs/ecs.can:744
 end -- ./ecs/ecs.can:744
-end -- ./ecs/ecs.can:744
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:747
-s:draw() -- ./ecs/ecs.can:748
-end -- ./ecs/ecs.can:748
-self:onDrawEnd() -- ./ecs/ecs.can:750
-end -- ./ecs/ecs.can:750
-end, -- ./ecs/ecs.can:750
-["callback"] = function(self, name, e, ...) -- ./ecs/ecs.can:765
-return self:callbackFiltered(alwaysTrue, name, e, ...) -- ./ecs/ecs.can:766
-end, -- ./ecs/ecs.can:766
-["callbackFiltered"] = function(self, filter, name, e, ...) -- ./ecs/ecs.can:779
-if filter(self, name, e, ...) then -- ./ecs/ecs.can:780
-if self["_has"][e] and self[name] then -- ./ecs/ecs.can:782
-self[name](self, e, e[self["component"]], ...) -- ./ecs/ecs.can:783
-end -- ./ecs/ecs.can:783
-if self["_has"][e] then -- ./ecs/ecs.can:786
-for _, ss in ipairs(self["systems"]) do -- ./ecs/ecs.can:787
-ss:callbackFiltered(filter, name, e, ...) -- ./ecs/ecs.can:788
-end -- ./ecs/ecs.can:788
-end -- ./ecs/ecs.can:788
-end -- ./ecs/ecs.can:788
-end, -- ./ecs/ecs.can:788
-["emit"] = function(self, name, ...) -- ./ecs/ecs.can:815
-return self:emitFiltered(alwaysTrue, name, ...) -- ./ecs/ecs.can:816
-end, -- ./ecs/ecs.can:816
-["emitFiltered"] = function(self, filter, name, ...) -- ./ecs/ecs.can:828
-if filter(self, name, ...) then -- ./ecs/ecs.can:829
-local status -- ./ecs/ecs.can:831
-if self[name] then -- ./ecs/ecs.can:832
-status = self[name](self, ...) -- ./ecs/ecs.can:833
-end -- ./ecs/ecs.can:833
-if status ~= "stop" and status ~= "capture" then -- ./ecs/ecs.can:836
-for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:837
-status = s:emitFiltered(filter, name, ...) -- ./ecs/ecs.can:838
-if status == "capture" then -- ./ecs/ecs.can:839
-break -- ./ecs/ecs.can:839
-end -- ./ecs/ecs.can:839
-end -- ./ecs/ecs.can:839
-end -- ./ecs/ecs.can:839
-return status -- ./ecs/ecs.can:842
-end -- ./ecs/ecs.can:842
-end, -- ./ecs/ecs.can:842
-["destroy"] = function(self) -- ./ecs/ecs.can:847
-recCallOnRemoveFromWorld(self["world"], { self }) -- ./ecs/ecs.can:848
-recDestroySystems({ ["systems"] = { self } }) -- ./ecs/ecs.can:849
-end -- ./ecs/ecs.can:849
-} -- ./ecs/ecs.can:849
-local recInstanciateSystems -- ./ecs/ecs.can:856
-recInstanciateSystems = function(world, systems) -- ./ecs/ecs.can:856
-local t -- ./ecs/ecs.can:857
-t = {} -- ./ecs/ecs.can:857
-for _, s in ipairs(systems) do -- ./ecs/ecs.can:858
-local system -- ./ecs/ecs.can:859
-system = setmetatable({ -- ./ecs/ecs.can:861
-["systems"] = recInstanciateSystems(world, s["systems"] or {}), -- ./ecs/ecs.can:862
-["world"] = world, -- ./ecs/ecs.can:863
-["w"] = world, -- ./ecs/ecs.can:864
-["s"] = world["s"], -- ./ecs/ecs.can:865
-["_skiplist"] = skipNew() -- ./ecs/ecs.can:866
-}, { ["__index"] = function(self, k) -- ./ecs/ecs.can:868
-if s[k] ~= nil then -- ./ecs/ecs.can:869
-return s[k] -- ./ecs/ecs.can:870
-else -- ./ecs/ecs.can:870
-return system_mt[k] -- ./ecs/ecs.can:872
-end -- ./ecs/ecs.can:872
-end }) -- ./ecs/ecs.can:872
-system["_has"] = system["_skiplist"]["previous"][1] -- ./ecs/ecs.can:876
-if type(s["filter"]) == "string" then -- ./ecs/ecs.can:878
-system["filter"] = function(_, e) -- ./ecs/ecs.can:879
-return e[s["filter"]] ~= nil -- ./ecs/ecs.can:879
-end -- ./ecs/ecs.can:879
-elseif type(s["filter"]) == "table" then -- ./ecs/ecs.can:880
-system["filter"] = ecs["all"](unpack(s["filter"])) -- ./ecs/ecs.can:881
-elseif type(s["filter"]) == "boolean" then -- ./ecs/ecs.can:882
-if s["filter"] then -- ./ecs/ecs.can:883
-system["filter"] = alwaysTrue -- ./ecs/ecs.can:884
-else -- ./ecs/ecs.can:884
-system["filter"] = alwaysFalse -- ./ecs/ecs.can:886
-end -- ./ecs/ecs.can:886
-end -- ./ecs/ecs.can:886
-if not s["component"] and s["name"] then -- ./ecs/ecs.can:890
-s["component"] = s["name"] -- ./ecs/ecs.can:891
-end -- ./ecs/ecs.can:891
-table["insert"](t, system) -- ./ecs/ecs.can:894
-if s["name"] then -- ./ecs/ecs.can:895
-world["s"][s["name"]] = system -- ./ecs/ecs.can:896
-end -- ./ecs/ecs.can:896
-system:onInstance() -- ./ecs/ecs.can:898
-end -- ./ecs/ecs.can:898
-return t -- ./ecs/ecs.can:900
-end -- ./ecs/ecs.can:900
-local recCallOnAddToWorld -- ./ecs/ecs.can:903
-recCallOnAddToWorld = function(world, systems) -- ./ecs/ecs.can:903
-for _, s in ipairs(systems) do -- ./ecs/ecs.can:904
-recCallOnAddToWorld(world, s["systems"]) -- ./ecs/ecs.can:905
-s:onAddToWorld(world) -- ./ecs/ecs.can:906
-end -- ./ecs/ecs.can:906
-end -- ./ecs/ecs.can:906
-ecs = { -- ./ecs/ecs.can:912
-["world"] = function(...) -- ./ecs/ecs.can:917
-local world -- ./ecs/ecs.can:918
-world = setmetatable({ -- ./ecs/ecs.can:918
-["filter"] = ecs["all"](), -- ./ecs/ecs.can:919
-["s"] = {}, -- ./ecs/ecs.can:920
-["_skiplist"] = skipNew() -- ./ecs/ecs.can:921
-}, { ["__index"] = system_mt }) -- ./ecs/ecs.can:922
-world["_has"] = world["_skiplist"]["previous"][1] -- ./ecs/ecs.can:923
-world["world"] = world -- ./ecs/ecs.can:924
-world["w"] = world -- ./ecs/ecs.can:925
-world["systems"] = recInstanciateSystems(world, { ... }) -- ./ecs/ecs.can:926
-recCallOnAddToWorld(world, world["systems"]) -- ./ecs/ecs.can:927
-return world -- ./ecs/ecs.can:928
-end, -- ./ecs/ecs.can:928
-["all"] = function(...) -- ./ecs/ecs.can:934
-if ... then -- ./ecs/ecs.can:935
-local l -- ./ecs/ecs.can:936
-l = { ... } -- ./ecs/ecs.can:936
-return function(s, e) -- ./ecs/ecs.can:937
-for _, k in ipairs(l) do -- ./ecs/ecs.can:938
-if e[k] == nil then -- ./ecs/ecs.can:939
-return false -- ./ecs/ecs.can:940
-end -- ./ecs/ecs.can:940
-end -- ./ecs/ecs.can:940
-return true -- ./ecs/ecs.can:943
-end -- ./ecs/ecs.can:943
-else -- ./ecs/ecs.can:943
-return alwaysTrue -- ./ecs/ecs.can:946
-end -- ./ecs/ecs.can:946
-end, -- ./ecs/ecs.can:946
-["any"] = function(...) -- ./ecs/ecs.can:953
-if ... then -- ./ecs/ecs.can:954
-local l -- ./ecs/ecs.can:955
-l = { ... } -- ./ecs/ecs.can:955
-return function(s, e) -- ./ecs/ecs.can:956
-for _, k in ipairs(l) do -- ./ecs/ecs.can:957
-if e[k] ~= nil then -- ./ecs/ecs.can:958
-return true -- ./ecs/ecs.can:959
+self:onDrawEnd() -- ./ecs/ecs.can:746
+end -- ./ecs/ecs.can:746
+end, -- ./ecs/ecs.can:746
+["callback"] = function(self, name, e, ...) -- ./ecs/ecs.can:761
+if self["_has"][e] and self[name] then -- ./ecs/ecs.can:763
+self[name](self, e, e[self["component"]], ...) -- ./ecs/ecs.can:764
+end -- ./ecs/ecs.can:764
+if self["_has"][e] then -- ./ecs/ecs.can:767
+for _, ss in ipairs(self["systems"]) do -- ./ecs/ecs.can:768
+ss:callback(name, e, ...) -- ./ecs/ecs.can:769
+end -- ./ecs/ecs.can:769
+end -- ./ecs/ecs.can:769
+end, -- ./ecs/ecs.can:769
+["emit"] = function(self, name, ...) -- ./ecs/ecs.can:795
+local status -- ./ecs/ecs.can:797
+if self[name] then -- ./ecs/ecs.can:798
+status = self[name](self, ...) -- ./ecs/ecs.can:799
+end -- ./ecs/ecs.can:799
+if status ~= "stop" and status ~= "capture" then -- ./ecs/ecs.can:802
+for _, s in ipairs(self["systems"]) do -- ./ecs/ecs.can:803
+status = s:emit(name, ...) -- ./ecs/ecs.can:804
+if status == "capture" then -- ./ecs/ecs.can:805
+break -- ./ecs/ecs.can:805
+end -- ./ecs/ecs.can:805
+end -- ./ecs/ecs.can:805
+end -- ./ecs/ecs.can:805
+return status -- ./ecs/ecs.can:808
+end, -- ./ecs/ecs.can:808
+["destroy"] = function(self) -- ./ecs/ecs.can:812
+recCallOnRemoveFromWorld(self["world"], { self }) -- ./ecs/ecs.can:813
+recDestroySystems({ ["systems"] = { self } }) -- ./ecs/ecs.can:814
+end -- ./ecs/ecs.can:814
+} -- ./ecs/ecs.can:814
+local alwaysTrue -- ./ecs/ecs.can:819
+alwaysTrue = function() -- ./ecs/ecs.can:819
+return true -- ./ecs/ecs.can:819
+end -- ./ecs/ecs.can:819
+local alwaysFalse -- ./ecs/ecs.can:820
+alwaysFalse = function() -- ./ecs/ecs.can:820
+return false -- ./ecs/ecs.can:820
+end -- ./ecs/ecs.can:820
+local recInstanciateSystems -- ./ecs/ecs.can:825
+recInstanciateSystems = function(world, systems) -- ./ecs/ecs.can:825
+local t -- ./ecs/ecs.can:826
+t = {} -- ./ecs/ecs.can:826
+for _, s in ipairs(systems) do -- ./ecs/ecs.can:827
+local system -- ./ecs/ecs.can:828
+system = setmetatable({ -- ./ecs/ecs.can:830
+["systems"] = recInstanciateSystems(world, s["systems"] or {}), -- ./ecs/ecs.can:831
+["world"] = world, -- ./ecs/ecs.can:832
+["w"] = world, -- ./ecs/ecs.can:833
+["s"] = world["s"], -- ./ecs/ecs.can:834
+["_skiplist"] = skipNew() -- ./ecs/ecs.can:835
+}, { ["__index"] = function(self, k) -- ./ecs/ecs.can:837
+if s[k] ~= nil then -- ./ecs/ecs.can:838
+return s[k] -- ./ecs/ecs.can:839
+else -- ./ecs/ecs.can:839
+return system_mt[k] -- ./ecs/ecs.can:841
+end -- ./ecs/ecs.can:841
+end }) -- ./ecs/ecs.can:841
+system["_has"] = system["_skiplist"]["previous"][1] -- ./ecs/ecs.can:845
+if type(s["filter"]) == "string" then -- ./ecs/ecs.can:847
+system["filter"] = function(_, e) -- ./ecs/ecs.can:848
+return e[s["filter"]] ~= nil -- ./ecs/ecs.can:848
+end -- ./ecs/ecs.can:848
+elseif type(s["filter"]) == "table" then -- ./ecs/ecs.can:849
+system["filter"] = ecs["all"](unpack(s["filter"])) -- ./ecs/ecs.can:850
+elseif type(s["filter"]) == "boolean" then -- ./ecs/ecs.can:851
+if s["filter"] then -- ./ecs/ecs.can:852
+system["filter"] = alwaysTrue -- ./ecs/ecs.can:853
+else -- ./ecs/ecs.can:853
+system["filter"] = alwaysFalse -- ./ecs/ecs.can:855
+end -- ./ecs/ecs.can:855
+end -- ./ecs/ecs.can:855
+if not s["component"] and s["name"] then -- ./ecs/ecs.can:859
+s["component"] = s["name"] -- ./ecs/ecs.can:860
+end -- ./ecs/ecs.can:860
+table["insert"](t, system) -- ./ecs/ecs.can:863
+if s["name"] then -- ./ecs/ecs.can:864
+world["s"][s["name"]] = system -- ./ecs/ecs.can:865
+end -- ./ecs/ecs.can:865
+system:onInstance() -- ./ecs/ecs.can:867
+end -- ./ecs/ecs.can:867
+return t -- ./ecs/ecs.can:869
+end -- ./ecs/ecs.can:869
+local recCallOnAddToWorld -- ./ecs/ecs.can:872
+recCallOnAddToWorld = function(world, systems) -- ./ecs/ecs.can:872
+for _, s in ipairs(systems) do -- ./ecs/ecs.can:873
+recCallOnAddToWorld(world, s["systems"]) -- ./ecs/ecs.can:874
+s:onAddToWorld(world) -- ./ecs/ecs.can:875
+end -- ./ecs/ecs.can:875
+end -- ./ecs/ecs.can:875
+ecs = { -- ./ecs/ecs.can:881
+["world"] = function(...) -- ./ecs/ecs.can:886
+local world -- ./ecs/ecs.can:887
+world = setmetatable({ -- ./ecs/ecs.can:887
+["filter"] = ecs["all"](), -- ./ecs/ecs.can:888
+["s"] = {}, -- ./ecs/ecs.can:889
+["_skiplist"] = skipNew() -- ./ecs/ecs.can:890
+}, { ["__index"] = system_mt }) -- ./ecs/ecs.can:891
+world["_has"] = world["_skiplist"]["previous"][1] -- ./ecs/ecs.can:892
+world["world"] = world -- ./ecs/ecs.can:893
+world["w"] = world -- ./ecs/ecs.can:894
+world["systems"] = recInstanciateSystems(world, { ... }) -- ./ecs/ecs.can:895
+recCallOnAddToWorld(world, world["systems"]) -- ./ecs/ecs.can:896
+return world -- ./ecs/ecs.can:897
+end, -- ./ecs/ecs.can:897
+["all"] = function(...) -- ./ecs/ecs.can:903
+if ... then -- ./ecs/ecs.can:904
+local l -- ./ecs/ecs.can:905
+l = { ... } -- ./ecs/ecs.can:905
+return function(s, e) -- ./ecs/ecs.can:906
+for _, k in ipairs(l) do -- ./ecs/ecs.can:907
+if e[k] == nil then -- ./ecs/ecs.can:908
+return false -- ./ecs/ecs.can:909
+end -- ./ecs/ecs.can:909
+end -- ./ecs/ecs.can:909
+return true -- ./ecs/ecs.can:912
+end -- ./ecs/ecs.can:912
+else -- ./ecs/ecs.can:912
+return alwaysTrue -- ./ecs/ecs.can:915
+end -- ./ecs/ecs.can:915
+end, -- ./ecs/ecs.can:915
+["any"] = function(...) -- ./ecs/ecs.can:922
+if ... then -- ./ecs/ecs.can:923
+local l -- ./ecs/ecs.can:924
+l = { ... } -- ./ecs/ecs.can:924
+return function(s, e) -- ./ecs/ecs.can:925
+for _, k in ipairs(l) do -- ./ecs/ecs.can:926
+if e[k] ~= nil then -- ./ecs/ecs.can:927
+return true -- ./ecs/ecs.can:928
+end -- ./ecs/ecs.can:928
+end -- ./ecs/ecs.can:928
+return false -- ./ecs/ecs.can:931
+end -- ./ecs/ecs.can:931
+else -- ./ecs/ecs.can:931
+return alwaysFalse -- ./ecs/ecs.can:934
+end -- ./ecs/ecs.can:934
+end, -- ./ecs/ecs.can:934
+["scene"] = function(name, systems, entities) -- ./ecs/ecs.can:952
+if systems == nil then systems = {} end -- ./ecs/ecs.can:952
+if entities == nil then entities = {} end -- ./ecs/ecs.can:952
+assert(scene, "ubiquitousse.scene unavailable") -- ./ecs/ecs.can:953
+local s -- ./ecs/ecs.can:954
+s = scene["new"](name) -- ./ecs/ecs.can:954
+local w -- ./ecs/ecs.can:955
+s["enter"] = function(self) -- ./ecs/ecs.can:957
+local sys, ent = systems, entities -- ./ecs/ecs.can:958
+if type(systems) == "function" then -- ./ecs/ecs.can:959
+sys = { systems() } -- ./ecs/ecs.can:959
 end -- ./ecs/ecs.can:959
-end -- ./ecs/ecs.can:959
-return false -- ./ecs/ecs.can:962
+if type(entities) == "function" then -- ./ecs/ecs.can:960
+ent = { entities() } -- ./ecs/ecs.can:960
+end -- ./ecs/ecs.can:960
+w = ecs["world"](unpack(sys)) -- ./ecs/ecs.can:961
+w:add(unpack(ent)) -- ./ecs/ecs.can:962
 end -- ./ecs/ecs.can:962
-else -- ./ecs/ecs.can:962
-return alwaysFalse -- ./ecs/ecs.can:965
+s["exit"] = function(self) -- ./ecs/ecs.can:964
+w:destroy() -- ./ecs/ecs.can:965
 end -- ./ecs/ecs.can:965
-end, -- ./ecs/ecs.can:965
-["scene"] = function(name, systems, entities) -- ./ecs/ecs.can:983
-if systems == nil then systems = {} end -- ./ecs/ecs.can:983
-if entities == nil then entities = {} end -- ./ecs/ecs.can:983
-assert(scene, "ubiquitousse.scene unavailable") -- ./ecs/ecs.can:984
-local s -- ./ecs/ecs.can:985
-s = scene["new"](name) -- ./ecs/ecs.can:985
-local w -- ./ecs/ecs.can:986
-s["enter"] = function(self) -- ./ecs/ecs.can:988
-local sys, ent = systems, entities -- ./ecs/ecs.can:989
-if type(systems) == "function" then -- ./ecs/ecs.can:990
-sys = { systems() } -- ./ecs/ecs.can:990
-end -- ./ecs/ecs.can:990
-if type(entities) == "function" then -- ./ecs/ecs.can:991
-ent = { entities() } -- ./ecs/ecs.can:991
-end -- ./ecs/ecs.can:991
-w = ecs["world"](unpack(sys)) -- ./ecs/ecs.can:992
-w:add(unpack(ent)) -- ./ecs/ecs.can:993
-end -- ./ecs/ecs.can:993
-s["exit"] = function(self) -- ./ecs/ecs.can:995
-w:destroy() -- ./ecs/ecs.can:996
-end -- ./ecs/ecs.can:996
-s["suspend"] = function(self) -- ./ecs/ecs.can:998
-w:emit("onSuspend") -- ./ecs/ecs.can:999
-end -- ./ecs/ecs.can:999
-s["resume"] = function(self) -- ./ecs/ecs.can:1001
-w:emit("onResume") -- ./ecs/ecs.can:1002
-end -- ./ecs/ecs.can:1002
-s["update"] = function(self, dt) -- ./ecs/ecs.can:1004
-w:update(dt) -- ./ecs/ecs.can:1005
-end -- ./ecs/ecs.can:1005
-s["draw"] = function(self) -- ./ecs/ecs.can:1007
-w:draw() -- ./ecs/ecs.can:1008
-end -- ./ecs/ecs.can:1008
-return s -- ./ecs/ecs.can:1011
-end -- ./ecs/ecs.can:1011
-} -- ./ecs/ecs.can:1011
-return ecs -- ./ecs/ecs.can:1015
+s["suspend"] = function(self) -- ./ecs/ecs.can:967
+w:emit("onSuspend") -- ./ecs/ecs.can:968
+end -- ./ecs/ecs.can:968
+s["resume"] = function(self) -- ./ecs/ecs.can:970
+w:emit("onResume") -- ./ecs/ecs.can:971
+end -- ./ecs/ecs.can:971
+s["update"] = function(self, dt) -- ./ecs/ecs.can:973
+w:update(dt) -- ./ecs/ecs.can:974
+end -- ./ecs/ecs.can:974
+s["draw"] = function(self) -- ./ecs/ecs.can:976
+w:draw() -- ./ecs/ecs.can:977
+end -- ./ecs/ecs.can:977
+return s -- ./ecs/ecs.can:980
+end -- ./ecs/ecs.can:980
+} -- ./ecs/ecs.can:980
+return ecs -- ./ecs/ecs.can:984
diff --git a/ecs/commonsystems/timer.can b/ecs/timer.can
similarity index 96%
rename from ecs/commonsystems/timer.can
rename to ecs/timer.can
index ff51a9e..52405e8 100644
--- a/ecs/commonsystems/timer.can
+++ b/ecs/timer.can
@@ -9,7 +9,7 @@ return {
 	default = {
 		-- timer object
 	},
-	process = :(e, t, dt)
+	process = :(t, dt)
 		t:update(dt)
 		if t:dead() then
 			@world:remove(t.entity)
diff --git a/ecs/timer.lua b/ecs/timer.lua
new file mode 100644
index 0000000..a7ee518
--- /dev/null
+++ b/ecs/timer.lua
@@ -0,0 +1,23 @@
+local timer -- ./ecs/timer.can:4
+timer = require((...):match("^(.-)ecs%.timer") .. "scene") -- ./ecs/timer.can:4
+return { -- ./ecs/timer.can:6
+["name"] = "timer", -- ./ecs/timer.can:7
+["filter"] = "timer", -- ./ecs/timer.can:8
+["default"] = {}, -- ./ecs/timer.can:9
+["process"] = function(self, t, dt) -- ./ecs/timer.can:12
+t:update(dt) -- ./ecs/timer.can:13
+if t:dead() then -- ./ecs/timer.can:14
+self["world"]:remove(t["entity"]) -- ./ecs/timer.can:15
+end -- ./ecs/timer.can:15
+end, -- ./ecs/timer.can:15
+["run"] = function(self, func) -- ./ecs/timer.can:20
+local t = timer["run"](func) -- ./ecs/timer.can:21
+self["world"]:add({ ["timer"] = t }) -- ./ecs/timer.can:23
+return t -- ./ecs/timer.can:25
+end, -- ./ecs/timer.can:25
+["tween"] = function(self, duration, tbl, to, method) -- ./ecs/timer.can:28
+local t = timer["tween"](duration, tbl, to, method) -- ./ecs/timer.can:29
+self["world"]:add({ ["timer"] = t }) -- ./ecs/timer.can:31
+return t -- ./ecs/timer.can:33
+end -- ./ecs/timer.can:33
+} -- ./ecs/timer.can:33
diff --git a/input/input.lua b/input/input.lua
index 38ab8f3..aef5a98 100644
--- a/input/input.lua
+++ b/input/input.lua
@@ -306,9 +306,9 @@ input_mt = {
 	--   -- The deadzone for analog inputs (e.g. joystick axes): if the input absolute value is strictly below this, it will be considered as 0. 0.05 by default.
 	--   -- This is applied automatically after the evaluation of input expressions.
 	--   deadzone = 0.05,
-	--   -- The pressed threshold: an input is considered down if above or equal to this value. 0.1 by default.
-	--   -- This is considered when determining if the input is pressed, down and released.
-	--   threshold = 0.1,
+	--   -- The pressed threshold: an input is considered down if above or equal to this value. 0.05 by default.
+	--   -- This is considered when determining if the input is pressed, odwn and released.
+	--   threshold = 0.05,
 	--   -- Dimension of the input (i.e. the number of values returned by this input). 1 by default.
 	--   dimension = 1
 	-- }
@@ -371,7 +371,7 @@ input_mt = {
 	-- Cache computed directly from the input config. Recomputed by :reload().
 	_dimension = 1, -- Dimension of the input.
 	_deadzone = 0.05, -- Deadzone of the input.
-	_threshold = 0.1, -- Threshold of the input.
+	_threshold = 0.05, -- Threshold of the input.
 
 	--- Update the input and its children.
 	-- Should be called every frame, typically _after_ you've done all your input handling
@@ -425,7 +425,7 @@ input_mt = {
 		-- get main options
 		self._dimension = self.config.dimension or 1
 		self._deadzone = self.config.deadzone or 0.05
-		self._threshold = self.config.threshold or 0.1
+		self._threshold = self.config.threshold or 0.05
 		-- resize dimensions
 		if #self._value > self._dimension then
 			for i=self._dimension+1, #self._value do
@@ -602,10 +602,8 @@ input_mt = {
 								new = filter(self, new, ...)
 								if not new then return end -- filtered out
 							end
-							if s.parentCache[s.lastKey] ~= new then -- filter out no-op events
-								s.parentCache[s.lastKey] = new
-								self._afterFilterEvent:emit(sname, new)
-							end
+							s.parentCache[s.lastKey] = new
+							self._afterFilterEvent:emit(sname, new)
 						end)
 					end
 					self._boundSourceEvents[sname] = true
diff --git a/ldtk/ldtk.can b/ldtk/ldtk.can
index 18e32ed..3c3ac06 100644
--- a/ldtk/ldtk.can
+++ b/ldtk/ldtk.can
@@ -534,7 +534,7 @@ let level_mt = {
 	-- @number[opt=0] y offset Y position to draw the level at
 	-- @require love
 	draw = :(x=0, y=0)
-		assert(@loaded == true, ("level %q not loaded"):format(@identifier))
+		assert(@loaded == true, "level not loaded")
 		lg.push()
 			lg.translate(x + @x, y + @y)
 			@drawBackground()
@@ -554,7 +554,7 @@ let level_mt = {
 	-- @number[opt=0] y offset Y position to draw the backgroud at
 	-- @require love
 	drawBackground = :(x=0, y=0)
-		assert(@loaded == true, ("level %q not loaded"):format(@identifier))
+		assert(@loaded == true, "level not loaded")
 		-- background color
 		lg.setColor(@background.color)
 		lg.rectangle("fill", x, y, @width, @height)
@@ -581,7 +581,7 @@ let level_mt = {
 	--
 	-- @tparam[opt] table callbacks
 	load = :(callbacks={})
-		assert(@loaded == false, ("level %q already loaded"):format(@identifier))
+		assert(@loaded == false, "level already loaded")
 		if @_json.bgRelPath then
 			let pos = @_json.__bgPos
 			let cropRect = pos.cropRect
@@ -623,7 +623,7 @@ let level_mt = {
 	--
 	-- @tparam[opt] table callbacks
 	unload = :(callbacks={})
-		assert(@loaded == true, ("level %q not loaded"):format(@identifier))
+		assert(@loaded == true, "level not loaded")
 		let onRemoveLayer = callbacks.onRemoveLayer
 		for _, l in ipairs(@layers) do
 			l:_unloadCallbacks(callbacks)
diff --git a/ldtk/ldtk.lua b/ldtk/ldtk.lua
index 375e167..644513d 100644
--- a/ldtk/ldtk.lua
+++ b/ldtk/ldtk.lua
@@ -353,7 +353,7 @@ level_mt = { -- ./ldtk/ldtk.can:525
 ["draw"] = function(self, x, y) -- ./ldtk/ldtk.can:536
 if x == nil then x = 0 end -- ./ldtk/ldtk.can:536
 if y == nil then y = 0 end -- ./ldtk/ldtk.can:536
-assert(self["loaded"] == true, ("level %q not loaded"):format(self["identifier"])) -- ./ldtk/ldtk.can:537
+assert(self["loaded"] == true, "level not loaded") -- ./ldtk/ldtk.can:537
 lg["push"]() -- ./ldtk/ldtk.can:538
 lg["translate"](x + self["x"], y + self["y"]) -- ./ldtk/ldtk.can:539
 self:drawBackground() -- ./ldtk/ldtk.can:540
@@ -365,7 +365,7 @@ end, -- ./ldtk/ldtk.can:545
 ["drawBackground"] = function(self, x, y) -- ./ldtk/ldtk.can:556
 if x == nil then x = 0 end -- ./ldtk/ldtk.can:556
 if y == nil then y = 0 end -- ./ldtk/ldtk.can:556
-assert(self["loaded"] == true, ("level %q not loaded"):format(self["identifier"])) -- ./ldtk/ldtk.can:557
+assert(self["loaded"] == true, "level not loaded") -- ./ldtk/ldtk.can:557
 lg["setColor"](self["background"]["color"]) -- ./ldtk/ldtk.can:559
 lg["rectangle"]("fill", x, y, self["width"], self["height"]) -- ./ldtk/ldtk.can:560
 lg["setColor"](white) -- ./ldtk/ldtk.can:562
@@ -377,7 +377,7 @@ end -- ./ldtk/ldtk.can:565
 end, -- ./ldtk/ldtk.can:565
 ["load"] = function(self, callbacks) -- ./ldtk/ldtk.can:583
 if callbacks == nil then callbacks = {} end -- ./ldtk/ldtk.can:583
-assert(self["loaded"] == false, ("level %q already loaded"):format(self["identifier"])) -- ./ldtk/ldtk.can:584
+assert(self["loaded"] == false, "level already loaded") -- ./ldtk/ldtk.can:584
 if self["_json"]["bgRelPath"] then -- ./ldtk/ldtk.can:585
 local pos -- ./ldtk/ldtk.can:586
 pos = self["_json"]["__bgPos"] -- ./ldtk/ldtk.can:586
@@ -415,7 +415,7 @@ self["loaded"] = true -- ./ldtk/ldtk.can:612
 end, -- ./ldtk/ldtk.can:612
 ["unload"] = function(self, callbacks) -- ./ldtk/ldtk.can:625
 if callbacks == nil then callbacks = {} end -- ./ldtk/ldtk.can:625
-assert(self["loaded"] == true, ("level %q not loaded"):format(self["identifier"])) -- ./ldtk/ldtk.can:626
+assert(self["loaded"] == true, "level not loaded") -- ./ldtk/ldtk.can:626
 local onRemoveLayer -- ./ldtk/ldtk.can:627
 onRemoveLayer = callbacks["onRemoveLayer"] -- ./ldtk/ldtk.can:627
 for _, l in ipairs(self["layers"]) do -- ./ldtk/ldtk.can:628
diff --git a/util/util.lua b/util/util.lua
index 1b01f6a..e611b5c 100644
--- a/util/util.lua
+++ b/util/util.lua
@@ -189,11 +189,14 @@ util = {
 	-- @treturn table the copied table
 	copy = function(t, cache)
 		if cache == nil then cache = {} end
-		if cache[t] then return cache[t] end
 		local r = {}
 		cache[t] = r
 		for k, v in pairs(t) do
-			r[k] = type(v) == "table" and util.copy(v, cache) or v
+			if type(v) == "table" then
+				r[k] = cache[v] or util.copy(v, cache)
+			else
+				r[k] = v
+			end
 		end
 		return setmetatable(r, getmetatable(t))
 	end,