diff --git a/doc/prosperon.org b/doc/prosperon.org
index 5f6a6a8..6941303 100644
--- a/doc/prosperon.org
+++ b/doc/prosperon.org
@@ -119,7 +119,6 @@ When an actor dies, all of the actors that have it as their master[fn::What a mo
 *** Turns
 Actors get fragments of time called a *turn*. Actors which belong to different systems can have different lengths of turns.
 
-
 *** Actor files
 Actor files end with the extension *.jso*[fn::"Javascript object".]. They list a series of functions to call on a newly formed actor. Actors have a number of useful functions which are called as defined.
 
@@ -184,7 +183,11 @@ Game worlds are made of entities. Entities are a type of actor with a number of
 The first and most masterful entity is the Primum. The Primum has no components, and its rotation and position are zero. It defines the center of the game.
 #+end_scholium
 
-In editor mode, when an entity moves, all of its *padawans* also move. When the game is actively simulating, this only holds if there are physical constraints between them.
+In editor mode, when an entity moves, all of its *padawans* also move.
+
+When the game is actively simulating, this only holds if there are physical constraints between them.
+
+Prosperon automatically generates physical pin constraints between objects with the appropriate physical properties.
 
 *** Adding Components
 Entities can have *components*. Components are essentially javascript wrappers over C code into the engine. Scripting is done to set the components up on entities, after which most of the work is done by the C plugin.
@@ -206,7 +209,7 @@ Components only work in the context of an entity. They have no meaning outside o
 While components can be added via scripting, it is easier to add them via the editor, as we will later see.
 
 *** Ur system
-The ur[fn::A German prefix meaning primitive, original, or earliest.] system is a prototypical inheritence system used by the actor files. When actor files are loaded, they are stored as an ur. Entities can be created from ur types using the *spawn* function.
+The ur[fn::A German prefix meaning primitive, original, or earliest.] system is a prototypical inheritence system used by the actor files. When actor files are loaded, they are stored as an ur. An *ur* represents a set of instructions to create the (text, config) needed to spawn an actor or entity.
 
 #+begin_scholium
 Create an ur from the *hello* files above, and then spawn it.
@@ -217,11 +220,21 @@ Primum.spawn(ur.hello);
 When creating an actor from source files, all of its setup must take place. In this example, the setup happens during *ur.create*, and spawning is simply a matter of prototyping it.
 #+end_scholium
 
-Each ur type has some useful fields.
+Each ur has the following fields.
 
-| field     | description                      |
-|-----------+----------------------------------|
-| instances | An array of instances of this ur |
+| field     | description                                                 |
+|-----------+-------------------------------------------------------------|
+| instances | An array of instances of this ur                            |
+| name      | Name of the ur                                              |
+| text      | Path to the script file                                     |
+| data      | Object to write to a newly generated actor                  |
+| proto     | An object that looks like a freshly made entity from the ur |
+
+An *ur* has a full path given like ~ur.goblin.big~. ~goblin~ and ~big~ can both possibly have a *.jso* script as well as a *data* file.
+
+When ~goblin.big~ is created, the new object has the ~goblin~ script run on it, followed by the ~big~ script. The ~data~ fields consist of objects prototyped from each other, so that the ~__proto__~ of ~big.data~ is ~goblin.data~. All fields of this objects are assigned to the ~big goblin~.
+
+The unaltered form of every ur-based-entity is saved in the ur's ~proto~ field. As you edit objects, the differences between how your object is now, compared to its ~ur.proto~ is a list of differences. These differences can be rolled into the ~ur~, or saved as a subtype.
 
 *** Prototyping Entities
 Ur types are the prototype of created entities. This makes it trivial to change huge swathes of the game, or make tiny adjustments to single objects, in a natural and intuitive way. When a value is changed on an entity, it is private. When a value is changed on an ur, it propogates to all entities. Values cannot be added or removed in subtypes.
diff --git a/scripts/actor.js b/scripts/actor.js
new file mode 100644
index 0000000..c37fa52
--- /dev/null
+++ b/scripts/actor.js
@@ -0,0 +1,72 @@
+var actor = {};
+var a_db = {};
+
+actor.spawn = function(script, config){
+  if (typeof script !== 'string') return undefined;
+  if (!a_db[script]) a_db[script] = io.slurp(script);
+  var padawan = Object.create(actor);
+  eval_env(a_db[script], padawan);
+
+  if (typeof config === 'object')
+    Object.merge(padawan,config);
+
+  padawan.padawans = [];
+  padawan.timers = [];
+  padawan.master = this;
+  Object.hide(padawan, "master","timers", "padawans");
+  this.padawans.push(padawan);
+  return padawan;
+};
+
+actor.spawn.doc = `Create a new actor, using this actor as the master, initializing it with 'script' and with data (as a JSON or Nota file) from 'config'.`;
+
+actor.timers = [];
+actor.kill = function(){
+  if (this.__dead__) return;
+  this.timers.forEach(t => t.kill());
+  if (this.master)
+    delete this.master[this.toString()];
+  this.padawans.forEach(p => p.kill());
+  this.padawans = [];
+  this.__dead__ = true;
+  if (typeof this.die === 'function') this.die();
+  if (typeof this.stop === 'function') this.stop();
+};
+
+actor.kill.doc = `Remove this actor and all its padawans from existence.`;
+
+actor.delay = function(fn, seconds) {
+  var t = Object.create(timer);
+  t.remain = seconds;
+  t.kill = () => {
+    timer.kill.call(t);
+    delete this.timers[t.toString()];
+  }
+  t.fire = () => {
+    if (this.__dead__) return;
+    fn();
+    t.kill();
+  };
+  Register.appupdate.register(t.update, t);
+  this.timers.push(t);
+  return function() { t.kill(); };
+};
+
+actor.delay.doc = `Call 'fn' after 'seconds' with 'this' set to the actor.`;
+
+actor.padawans = [];
+
+actor.remaster = function(to){
+  delete this.master.padawans[this.toString()];
+  this.master = to;
+  to.padawans.push(this);
+};
+
+global.app = Object.create(actor);
+
+app.die = function()
+{
+  Game.quit();
+}
+
+return {actor, app};
diff --git a/scripts/ai.js b/scripts/ai.js
index 79e3f8a..5c65c76 100644
--- a/scripts/ai.js
+++ b/scripts/ai.js
@@ -38,7 +38,7 @@ var ai = {
     if (Vector.length(dir) < 10) return true;
     
     this.velocity = Vector.norm(this.randomloc.sub(this.pos)).scale(20);
-    return false;
+    return False;
     }
   },
 
@@ -61,3 +61,5 @@ var ai = {
     };
   },
 };
+
+return {ai};
diff --git a/scripts/base.js b/scripts/base.js
index bdffae0..1da9d57 100644
--- a/scripts/base.js
+++ b/scripts/base.js
@@ -465,6 +465,18 @@ Object.containingKey = function(obj, prop)
   return o;
 }
 
+Object.access = function(obj, name)
+{
+  var dig = name.split('.');
+
+  for (var i of dig) {
+    obj = obj[i];
+    if (!obj) return undefined;
+  }
+  
+  return obj;
+}
+
 Object.isAccessor = function(obj, prop)
 {
   var o = Object.containingKey(obj,prop);
@@ -490,11 +502,11 @@ Object.mergekey = function(o1,o2,k)
         o1[k] = o2[k];
     }
    } else
-     Object.defineProperty(o1, k, Object.getOwnPropertyDescriptor(o2,k));   
-//     o1[k] = o2[k];
+     o1[k] = o2[k];
 }
 
 /* Same as merge from Ruby */
+/* Adds objs key by key to target */
 Object.merge = function(target, ...objs)
 {
   for (var obj of objs)
@@ -575,10 +587,12 @@ Object.defineProperty(Object.prototype, 'obscure', {
 Object.defineProperty(Object.prototype, 'mixin', {
   value: function(obj) {
     if (typeof obj === 'string') {
-      obj = use(obj);
-      if (!obj) return;
+      var script = io.slurp(obj);
+      obj = eval_env(script, this, obj);
     }
-    Object.assign(this, obj);
+    
+    if (obj)
+      Object.mixin(this, obj);
   },
 });
 
@@ -771,6 +785,28 @@ Object.defineProperty(String.prototype, 'set_ext', {
   value: function(val) { return this.strip_ext() + val; }
 });
 
+Object.defineProperty(String.prototype, 'folder_same_name', {
+  value: function() {
+    var dirs = this.dir().split('/');
+    return dirs.last() === this.name();
+  }
+});
+
+Object.defineProperty(String.prototype, 'up_path', {
+  value: function() {
+    var base = this.base();
+    var dirs = this.dir().split('/');
+    dirs.pop();
+    return dirs.join('/') + base;
+  }
+});
+
+Object.defineProperty(String.prototype, 'resolve', {
+  value: function(path) {
+    
+  },
+});
+
 Object.defineProperty(String.prototype, 'fromlast', {
   value: function(val) {
     var idx = this.lastIndexOf(val);
@@ -816,7 +852,10 @@ Object.defineProperty(String.prototype, 'base', {
 });
 
 Object.defineProperty(String.prototype, 'dir', {
-  value: function() { return this.tolast('/'); }
+  value: function() {
+    if (!this.includes('/')) return "";
+    return this.tolast('/');
+  }
 });
 
 Object.defineProperty(String.prototype, 'splice', {
diff --git a/scripts/camera2d.jso b/scripts/camera2d.jso
new file mode 100644
index 0000000..fd47645
--- /dev/null
+++ b/scripts/camera2d.jso
@@ -0,0 +1,19 @@
+this.phys = physics.kinematic;
+this.dir_view2world = function(dir) { return dir.scale(this.realzoom()); };
+this.view2world = function(pos) { return cmd(137,pos); };
+this.world2view = function(pos) { return cmd(136,pos); };
+this.realzoom = function() { return cmd(135); };
+
+this.mixin({
+  get zoom() {
+    var z = Game.native.y / Window.dimensions.y;
+    return cmd(135)/z;
+  },
+
+  set zoom(x) {
+    x = Math.clamp(x,0.1,10);
+    var z = Game.native.y / Window.dimensions.y;
+    z *= x;
+    cmd(62,z);
+  },
+});
\ No newline at end of file
diff --git a/scripts/components.js b/scripts/components.js
index 99bb5aa..43c8e92 100644
--- a/scripts/components.js
+++ b/scripts/components.js
@@ -42,8 +42,7 @@ var component = {
   extend(spec) { return Object.copy(this, spec); },
 };
 
-component.util = {};
-component.util.make_point_obj = function(o, p)
+var make_point_obj = function(o, p)
 {
   return {
     pos: p,
@@ -56,7 +55,7 @@ component.util.make_point_obj = function(o, p)
   }
 }
 
-component.util.assign_impl = function(obj, impl)
+var assign_impl = function(obj, impl)
 {
   var tmp = {};
   for (var key of Object.keys(impl))
@@ -172,7 +171,7 @@ component.sprite.impl = {
     var dim = this.dimensions();
     dim = dim.scale(this.gameobject.gscale());
     var realpos = dim.scale(0.5).add(this.pos);
-    return cwh2bb(realpos,dim);
+    return bbox.fromcwh(realpos,dim);
   },
 
   kill() { cmd(9,this.id); },
@@ -801,7 +800,7 @@ component.circle2d = Object.copy(collider2d, {
   toString() { return "circle2d"; },
   
   boundingbox() {
-    return cwh2bb(this.offset.scale(this.gameobject.scale), [this.radius,this.radius]);
+    return bbox.fromcwh(this.offset.scale(this.gameobject.scale), [this.radius,this.radius]);
   },
 
   hides: ['gameobject', 'id', 'shape', 'scale'],
diff --git a/scripts/debug.js b/scripts/debug.js
index 126b603..3b25d35 100644
--- a/scripts/debug.js
+++ b/scripts/debug.js
@@ -1,77 +1,3 @@
-/* All draw in screen space */
-Object.assign(render, {
-  point(pos,size,color) {
-    color ??= Color.blue;
-    render.circle(pos,size,color);
-  },
-
-  line(points, color, thickness) {
-    thickness ??= 1;
-    color ??= Color.white;
-    cmd(83, points, color, thickness);
-  },
-
-  poly(points, color) { cmd_points(0,points,color); },
-
-  circle(pos, radius, color) { cmd(115, pos, radius, color); },
-
-  /* size here is arm length - size of 2 is 4 height total */
-  cross(pos, size, color) {
-    color ??= Color.red;
-    var a = [
-      pos.add([0,size]),
-      pos.add([0,-size])
-    ];
-    var b = [
-      pos.add([size,0]),
-      pos.add([-size,0])
-    ];
-    
-    render.line(a,color);
-    render.line(b,color);
-  },
-  
-  arrow(start, end, color, wingspan, wingangle) {
-    color ??= Color.red;
-    wingspan ??= 4;
-    wingangle ??=10;
-    
-    var dir = end.sub(start).normalized();
-    var wing1 = [
-      Vector.rotate(dir, wingangle).scale(wingspan).add(end),
-      end
-    ];
-    var wing2 = [
-      Vector.rotate(dir,-wingangle).scale(wingspan).add(end),
-      end
-    ];
-    render.line([start,end],color);
-    render.line(wing1,color);
-    render.line(wing2,color);
-  },
-
-  rectangle(lowerleft, upperright, color) {
-    var pos = lowerleft.add(upperright).map(x=>x/2);
-    var wh = [upperright.x-lowerleft.x,upperright.y-lowerleft.y];
-    render.box(pos,wh,color);
-  },
-  
-  box(pos, wh, color) {
-    color ??= Color.white;
-    cmd(53, pos, wh, color);
-  },
-
-});
-
-render.doc = "Draw shapes in screen space.";
-render.circle.doc = "Draw a circle at pos, with a given radius and color.";
-render.cross.doc = "Draw a cross centered at pos, with arm length size.";
-render.arrow.doc = "Draw an arrow from start to end, with wings of length wingspan at angle wingangle.";
-render.poly.doc = "Draw a concave polygon from a set of points.";
-render.rectangle.doc = "Draw a rectangle, with its corners at lowerleft and upperright.";
-render.box.doc = "Draw a box centered at pos, with width and height in the tuple wh.";
-render.line.doc = "Draw a line from a set of points, and a given thickness.";
-
 var Debug = {
   fn_break(fn, obj) {
     if (typeof fn !== 'function') return;
@@ -339,7 +265,7 @@ Time.doc.time = "Seconds elapsed since the game started.";
 Time.doc.pause = "Pause the game by setting the timescale to 0; remembers the current timescale on play.";
 Time.doc.play = "Resume the game after using Time.pause.";
 
-Player.players[0].control(DebugControls);
+player[0].control(DebugControls);
 Register.gui.register(Debug.draw, Debug);
 
 Debug.api = {};
diff --git a/scripts/diff.js b/scripts/diff.js
index 410136a..ad1e729 100644
--- a/scripts/diff.js
+++ b/scripts/diff.js
@@ -32,6 +32,7 @@ function ediff(from,to)
     if (typeof v === 'function') return;
     if (typeof v === 'undefined') return;
 
+
     if (Array.isArray(v)) {
       if (!Array.isArray(to[key]) || v.length !== to[key].length) {
         var r = ediff(v,[]);
@@ -54,7 +55,8 @@ function ediff(from,to)
     }
 
     if (typeof v === 'number') {
-      if (!to || v !== to[key])
+      if (!isFinite(v)) v = null; // Squash infinity to null
+      if (v !== to[key])
 	ret[key] = v;
       return;
     }
@@ -67,7 +69,7 @@ function ediff(from,to)
   return ret;
 }
 
-ediff.doc = "Given a from and to object, returns an object that, if applied to from, will make it the same as to. Does not include deletion; it is only additive.";
+ediff.doc = "Given a from and to object, returns an object that, if applied to from, will make it the same as to. Does not include deletion; it is only additive. If one element in an array is different, the entire array is copied. Squashes infinite numbers to null for use in JSON.";
 
 function samediff(from, to)
 {
diff --git a/scripts/editor.js b/scripts/editor.js
index 927d0ee..669c7e4 100644
--- a/scripts/editor.js
+++ b/scripts/editor.js
@@ -2,15 +2,12 @@
   Editor-only variables on objects
   selectable
 */
-//prototypes.generate_ur('.');
 
 var editor = {
   toString() { return "editor"; },
   grid_size: 100,
   ruler_mark_px: 100,
   grid_color: Color.green.alpha(0.3),
-
-  dbg_ur: "arena.level1",
   machine: undefined,
   device_test: undefined,
   selectlist: [],
@@ -40,10 +37,10 @@ var editor = {
     if (!obj) return;
     if (!obj._ed.selectable) return undefined;
     
-    if (obj.level !== this.edit_level) {
-      var testlevel = obj.level;
-      while (testlevel && testlevel.level !== Primum && testlevel.level !== this.edit_level && testlevel !== testlevel.level)
-         testlevel = testlevel.level;
+    if (obj.master !== this.edit_level) {
+      var testlevel = obj.master;
+      while (testlevel && testlevel.master !== world && testlevel.master !== this.edit_level && testlevel !== testlevel.master)
+         testlevel = testlevel.master;
       return testlevel;
     }
     
@@ -57,7 +54,7 @@ var editor = {
   curpanel: undefined,
 
   check_level_nested() {
-    if (this.edit_level.level) {
+    if (this.edit_level.master) {
       this.openpanel(gen_notify("Can't close a nested level. Save up to the root before continuing."));
       return true;
     }
@@ -186,45 +183,45 @@ var editor = {
 
   start_play_ed() {
     this.stash = this.desktop.instance_obj();
-    Primum.clear();
-    load("config.js");
+    world.clear();
+    global.mixin("config.js");
     Game.play();
-    Player.players[0].uncontrol(this);
-    Player.players[0].control(limited_editor);
+    player[0].uncontrol(this);
+    player[0].control(limited_editor);
     editor.cbs.forEach(cb => cb());
     editor.cbs = [];
-    load("predbg.js");
+    global.mixin("predbg.js");
     console.warn(`starting game with ${this.dbg_ur}`);
-    editor.dbg_play = Primum.spawn(this.dbg_ur);
+    editor.dbg_play = world.spawn(this.dbg_ur);
     editor.dbg_play.pos = [0,0];
-    load("debug.js");
+    global.mixin("debug.js");
   },
 
   start_play() {
-    Primum.clear();
-    load("config.js");
+    world.clear();
+    global.mixin("config.js");
     Game.play();
-    Player.players[0].uncontrol(this);
-    Player.players[0].control(limited_editor);
+    player[0].uncontrol(this);
+    player[0].control(limited_editor);
     editor.cbs.forEach(cb=>cb());
     editor.cbs = [];
-    load("game.js");
+    global.mixin("game.js");
   },
 
   cbs: [],
 
   enter_editor() {
     Game.pause();
-    Player.players[0].control(this);
-    Player.players[0].uncontrol(limited_editor);
+    player[0].control(this);
+    player[0].uncontrol(limited_editor);
     
     editor.cbs.push(Register.gui.register(editor.gui.bind(editor)));
     editor.cbs.push(Register.draw.register(editor.draw.bind(editor)));
     editor.cbs.push(Register.debug.register(editor.ed_debug.bind(editor)));
     editor.cbs.push(Register.update.register(GUI.controls.update, GUI.controls));
     
-    this.desktop = Primum.spawn(ur.arena);
-    Primum.rename_obj(this.desktop.toString(), "desktop");
+    this.desktop = world.spawn();
+    world.rename_obj(this.desktop.toString(), "desktop");
     this.edit_level = this.desktop;
     editor.edit_level._ed.selectable = false;
     if (this.stash) {
@@ -232,7 +229,7 @@ var editor = {
       Object.dainty_assign(this.desktop, this.stash);
     }
     this.selectlist = [];
-    editor.camera = Primum.spawn(ur.camera2d);
+    editor.camera = world.spawn("scripts/camera2d.jso");
     editor.camera._ed.selectable = false;
     Game.view_camera(editor.camera);
   },
@@ -244,11 +241,11 @@ var editor = {
   openpanel(panel) {
     if (this.curpanel) {
       this.curpanel.close();
-      Player.players[0].uncontrol(this.curpanel);
+      player[0].uncontrol(this.curpanel);
     }
       
     this.curpanel = panel;
-    Player.players[0].control(this.curpanel);
+    player[0].control(this.curpanel);
     this.curpanel.open();
   },
 
@@ -271,6 +268,7 @@ var editor = {
   },
 
   snapshot() {
+    return; // TODO: Implement
     var dif = this.edit_level.json_obj();
     if (!dif) return;
   
@@ -338,10 +336,6 @@ var editor = {
     }
   },
   
-  load_desktop(d) {
-    
-  },
-
   draw_objects_names(obj,root,depth){
       if (!obj) return;
       if (!obj.objects) return;
@@ -358,13 +352,13 @@ var editor = {
   get sel_comp() { return this._sel_comp; },
   set sel_comp(x) {
     if (this._sel_comp)
-      Player.players[0].uncontrol(this._sel_comp);
+      player[0].uncontrol(this._sel_comp);
     
     this._sel_comp = x;
 
     if (this._sel_comp) {
       console.info("sel comp is now " + this._sel_comp);
-      Player.players[0].control(this._sel_comp);
+      player[0].control(this._sel_comp);
     }
   },
 
@@ -413,9 +407,9 @@ var editor = {
     var clvl = thiso;
     
     var lvlchain = [];
-    while (clvl !== Primum) {
+    while (clvl !== world) {
       lvlchain.push(clvl);
-      clvl = clvl.level;
+      clvl = clvl.master;
     }
     lvlchain.push(clvl);
     
@@ -450,11 +444,7 @@ var editor = {
     GUI.text("$$$$$$", [0,ypos],1,editor.color_depths[depth]);
     
     this.selectlist.forEach(function(x) {
-      var sname = x.__proto__.toString();
-      x.check_dirty();
-      if (x._ed.dirty) sname += "*";
-      
-      GUI.text(sname, x.screenpos().add([0, 32]), 1, Color.editor.ur);
+      GUI.text(x.urstr(), x.screenpos().add([0, 32]), 1, Color.editor.ur);
       GUI.text(x.worldpos().map(function(x) { return Math.round(x); }), x.screenpos(), 1, Color.white);
       render.cross(x.screenpos(), 10, Color.blue);
     });
@@ -532,9 +522,7 @@ var editor = {
   lvl_history: [],
 
   load(file) {
-    var ur = prototypes.get_ur(file);
-    if (!ur) return;
-    var obj = editor.edit_level.spawn(ur);
+    var obj = editor.edit_level.spawn(Object.access(ur, file));
     obj.set_worldpos(Mouse.worldpos);
     this.selectlist = [obj];
   },
@@ -550,10 +538,11 @@ var editor = {
   /* Checking to save an entity as a subtype. */
   /* sub is the name of the (sub)type; obj is the object to save it as */
   saveas_check(sub, obj) {
+    return;
     if (!sub) return;
     obj ??= editor.selectlist[0];
     
-    var curur = prototypes.get_ur(sub);
+//    var curur = prototypes.get_ur(sub);
     
     if (curur) {
       notifypanel.action = editor.saveas;
@@ -570,7 +559,7 @@ var editor = {
 	  editor.selectlist = [nobj];
 	  return;
 	}
-	editor.edit_level = editor.edit_level.level;
+	editor.edit_level = editor.edit_level.master;
       }
 
       var t = obj.transform();
@@ -633,7 +622,7 @@ editor.inputs.n = function() {
   var o = editor.try_select();
   if (!o) return;
   if (o === editor.selectlist[0]) return;
-  if (o.level !== editor.selectlist[0].level) return;
+  if (o.master !== editor.selectlist[0].master) return;
 
   var tpos = editor.selectlist[0].pos;
   tpos.x *= -1;
@@ -646,7 +635,7 @@ editor.inputs['M-n'] = function()
   var o = editor.try_select();
   if (!o) return;
   if (o === editor.selectlist[0]) return;
-  if (o.level !== editor.selectlist[0].level) return;
+  if (o.master !== editor.selectlist[0].master) return;
 
   var tpos = editor.selectlist[0].pos;
   tpos.y *= -1;
@@ -662,7 +651,7 @@ editor.inputs['h'] = function() {
 };
 editor.inputs['h'].doc = "Toggle object hidden.";
 
-editor.inputs['C-h'] = function() { Primum.objects.forEach(function(x) { x.visible = true; }); };
+editor.inputs['C-h'] = function() { world.objects.forEach(function(x) { x.visible = true; }); };
 editor.inputs['C-h'].doc = "Unhide all objects.";
 
 editor.inputs['C-e'] = function() { editor.openpanel(assetexplorer); };
@@ -733,9 +722,9 @@ editor.inputs['C-f'] = function() {
 editor.inputs['C-f'].doc = "Tunnel into the selected level object to edit it.";
 
 editor.inputs['C-F'] = function() {
-  if (editor.edit_level.level === Primum) return;
+  if (editor.edit_level.master === world) return;
 
-  editor.edit_level = editor.edit_level.level;
+  editor.edit_level = editor.edit_level.master;
   editor.unselect();
   editor.reset_undos();
 };
@@ -807,7 +796,7 @@ editor.inputs['C-space'] = function() {
 editor.inputs['C-space'].doc = "Search to execute a specific command.";
 
 editor.inputs['M-m'] = function() {
-//  Player.players[0].control(rebinder);
+//  player[0].control(rebinder);
 };
 editor.inputs['M-m'].doc = "Rebind a shortcut. Usage: M-m SHORTCUT TARGET";
 
@@ -838,7 +827,8 @@ editor.inputs['C-s'] = function() {
   var savejs = saveobj.json_obj();
   Object.merge(saveobj.__proto__, savejs);
   if (savejs.objects) saveobj.__proto__.objects = savejs.objects;
-  var path = prototypes.ur_stem(saveobj.ur.toString()) + ".json";
+//  var path = prototypes.ur_stem(saveobj.ur.toString()) + ".json";
+  path = "CHANGETHIS";
 
   io.slurpwrite(path, JSON.stringify(saveobj.__proto__,null,1));
   console.warn(`Wrote to file ${path}`);
@@ -1053,7 +1043,7 @@ editor.inputs['C-M-lm'] = function()
 {
   var go = physics.pos_query(Mouse.worldpos);
   if (!go) return;
-  editor.edit_level = go.level;
+  editor.edit_level = go.master;
 }
 
 editor.inputs['C-M-mm'] = function() {
@@ -1380,7 +1370,7 @@ var inputpanel = {
   start() {},
   
   close() {
-    Player.players[0].uncontrol(this);
+    player[0].uncontrol(this);
     this.on = false;
     if ('on_close' in this)
       this.on_close();
@@ -1505,6 +1495,7 @@ var replpanel = Object.copy(inputpanel, {
     this.value = "";
     this.caret = 0;
     var ret = function() {return eval(ecode);}.call(repl_obj);
+    if (typeof ret === 'object') ret = json.encode(ret,null,1);
     console.say(ret);
   },
 
@@ -1797,7 +1788,7 @@ var openlevelpanel = Object.copy(inputpanel,  {
   },
 
   start() {
-    this.allassets = prototypes.list.sort();
+    this.allassets = ur._list.sort();
     this.assets = this.allassets.slice();
     this.caret = 0;
     var click_ur = function(btn) {
@@ -1954,7 +1945,7 @@ var entitylistpanel = Object.copy(inputpanel, {
   title: "Level object list",
   level: {},
   start() {
-    this.level = editor.edit_level;
+    this.master = editor.edit_level;
   },
 });
 
@@ -1978,9 +1969,9 @@ limited_editor.inputs['M-p'] = function()
 
 limited_editor.inputs['C-q'] = function()
 {
-  Primum.clear();
-  load("editorconfig.js");
-  load("dbgret.js");
+  world.clear();
+  global.mixin("editorconfig.js");
+  global.mixin("dbgret.js");
   
   editor.enter_editor();
 }
diff --git a/scripts/engine.js b/scripts/engine.js
index 48f407a..4aca880 100644
--- a/scripts/engine.js
+++ b/scripts/engine.js
@@ -14,19 +14,28 @@ function use(file)
 }
 use.files = {};
 
+function include(file,that)
+{
+  if (!that) return;
+  var c = io.slurp(file);
+  eval_env(c, that, file);
+}
+
 function eval_env(script, env, file)
 {
   env ??= {};
   file ??= "SCRIPT";
-//  script = `(function() { ${script} })();`;
-  eval(`(function() { ${script} }).call(env);`);
-//  cmd(123,script,global,file);
-//  return eval(script);
-  
-//  return function(str) { return eval(str); }.call(env, script);
+  script = `(function() { ${script} }).call(this);`;
+  return cmd(123,script,env,file);
 }
+
 eval_env.dov = `Counterpart to /load_env/, but with a string.`;
 
+function feval_env(file, env)
+{
+  eval_env(io.slurp(file), env, file);
+}
+
 function load_env(file,env)
 {
   env ??= global;
@@ -43,12 +52,12 @@ var load = use;
 
 Object.assign(global, use("scripts/base.js"));
 global.obscure('global');
-global.mixin(use("scripts/std.js"));
-global.mixin(use("scripts/diff.js"));
+global.mixin("scripts/std.js");
+global.mixin("scripts/diff.js");
 
 console.level = 1;
 
-global.mixin(use("scripts/color.js"));
+global.mixin("scripts/color.js");
 
 var prosperon = {};
 prosperon.version = cmd(255);
@@ -104,7 +113,7 @@ Range is given by a semantic versioning number, prefixed with nothing, a ~, or a
 ^ means that MAJOR must match exactly, but any MINOR and PATCH greater or equal is valid.`;
 
 
-global.mixin(use("scripts/gui.js"));
+global.mixin("scripts/gui.js");
 
 var timer = {
   update(dt) {
@@ -130,61 +139,13 @@ var timer = {
   },
 };
 
-load("scripts/tween.js");
-
-var render = {
-  normal() { cmd(67);},
-  wireframe() { cmd(68); },
-  pass() { },
-};
-
-render.doc = {
-  doc: "Functions for rendering modes.",
-  normal: "Final render with all lighting.",
-  wireframe: "Show only wireframes of models."
-};
-
-render.device = {
-  pc: [1920,1080],
-  macbook_m2: [2560,1664, 13.6],
-  ds_top: [400,240, 3.53],
-  ds_bottom: [320,240, 3.02],
-  playdate: [400,240,2.7],
-  switch: [1280,720, 6.2],
-  switch_lite: [1280,720,5.5],
-  switch_oled: [1280,720,7],
-  dsi: [256,192,3.268],
-  ds: [256,192, 3],
-  dsixl: [256,192,4.2],
-  ipad_air_m2: [2360,1640, 11.97],
-  iphone_se: [1334, 750, 4.7],
-  iphone_12_pro: [2532,1170,6.06],
-  iphone_15: [2556,1179,6.1],
-  gba: [240,160,2.9],
-  gameboy: [160,144,2.48],
-  gbc: [160,144,2.28],
-  steamdeck: [1280,800,7],
-  vita: [960,544,5],
-  psp: [480,272,4.3],
-  imac_m3: [4480,2520,23.5],
-  macbook_pro_m3: [3024,1964, 14.2],
-  ps1: [320,240,5],
-  ps2: [640,480],
-  snes: [256,224],
-  gamecube: [640,480],
-  n64: [320,240],
-  c64: [320,200],
-  macintosh: [512,342,9],
-  gamegear: [160,144,3.2],
-};
-
-render.device.doc = `Device resolutions given as [x,y,inches diagonal].`;
-
-global.mixin(use("scripts/physics.js"));
-global.mixin(use("scripts/input.js"));
-global.mixin(use("scripts/sound.js"));
-global.mixin(use("scripts/ai.js"));
-global.mixin(use("scripts/geometry.js"));
+global.mixin("scripts/tween.js");
+global.mixin("scripts/render.js");
+global.mixin("scripts/physics.js");
+global.mixin("scripts/input.js");
+global.mixin("scripts/sound.js");
+global.mixin("scripts/ai.js");
+global.mixin("scripts/geometry.js");
 
 var Register = {
   kbm_input(mode, btn, state, ...args) {
@@ -194,15 +155,15 @@ var Register = {
    
     switch(mode) {
       case "emacs":
-        Player.players[0].raw_input(btn, state, ...args);
+        player[0].raw_input(btn, state, ...args);
         break;
 
       case "mouse":
-        Player.players[0].mouse_input(btn, state, ...args);
+        player[0].mouse_input(btn, state, ...args);
 	break;
 
       case "char":
-        Player.players[0].char_input(btn);
+        player[0].char_input(btn);
 	break;
     };
   },
@@ -275,7 +236,7 @@ Register.add_cb(10, "draw");
 
 register(9, console.stack, this);
 
-Register.gamepad_playermap[0] = Player.players[0];
+Register.gamepad_playermap[0] = player[0];
 
 var Event = {
   events: {},
@@ -320,21 +281,21 @@ var Window = {
 };
 
 Window.screen2world = function(screenpos) {
-//  if (Game.camera)
-//    return Game.camera.view2world(screenpos);
+  if (Game.camera)
+    return Game.camera.view2world(screenpos);
+    
   return screenpos;
 }
 Window.world2screen = function(worldpos) {
-  return worldpos;
   return Game.camera.world2view(worldpos);
 }
 
 Window.icon = function(path) { cmd(90, path); };
 Window.icon.doc = "Set the icon of the window using the PNG image at path.";
 
-global.mixin(use("scripts/debug.js"));
-global.mixin(use("scripts/spline.js"));
-global.mixin(use("scripts/components.js"));
+global.mixin("scripts/debug.js");
+global.mixin("scripts/spline.js");
+global.mixin("scripts/components.js");
 
 var Game = {
   engine_start(fn) {
@@ -420,31 +381,33 @@ Window.doc.boundingbox = "Boundingbox of the window, with top and right being it
 
 Register.update.register(Game.exec, Game);
 
-global.mixin(use("scripts/entity.js"));
+global.mixin("scripts/actor.js");
+global.mixin("scripts/entity.js");
 
 function world_start() {
-  globalThis.Primum = Object.create(gameobject);
-  Primum.objects = {};
-  Primum.check_dirty = function() {};
-  Primum.namestr = function(){};
-  Primum._ed = {
+  globalThis.world = Object.create(gameobject);
+  world.objects = {};
+  world.check_dirty = function() {};
+  world.namestr = function(){};
+  world._ed = {
     selectable:false,
     dirty:false,
   };
-  Primum.toString = function() { return "Primum"; };
-  Primum.ur = "Primum";
-  Primum.kill = function() { this.clear(); };
-  Primum.phys = 2;
+  world.toString = function() { return "world"; };
+  world.master = gameobject;
+  world.ur = "world";
+  world.kill = function() { this.clear(); };
+  world.phys = 2;
   
-  gameobject.level = Primum;
+  gameobject.level = world;
   gameobject.body = make_gameobject();
   cmd(113,gameobject.body, gameobject);
   Object.hide(gameobject, 'timescale');
-
-  global.world = Primum;
+  var cam = world.spawn("scripts/camera2d.jso");
+  Game.view_camera(cam);
 }
 
-global.mixin(use("scripts/physics.js"));
+global.mixin("scripts/physics.js");
 
 Game.view_camera = function(cam)
 {
@@ -452,8 +415,6 @@ Game.view_camera = function(cam)
   cmd(61, Game.camera.body);
 }
 
-prototypes.generate_ur('scripts/camera.jso');
-
 Window.title(`Prosperon v${prosperon.version}`);
 Window.width = 1280;
 Window.height = 720;
diff --git a/scripts/entity.js b/scripts/entity.js
index 42b1594..82964a7 100644
--- a/scripts/entity.js
+++ b/scripts/entity.js
@@ -1,4 +1,4 @@
-prosperon.obj_unique_name = function(name, obj)
+function obj_unique_name(name, obj)
 {
   name = name.replaceAll('.', '_');
   if (!(name in obj)) return name;
@@ -11,92 +11,55 @@ prosperon.obj_unique_name = function(name, obj)
   return n;
 }
 
-var actor = {};
-var a_db = {};
-
-actor.spawn = function(script, config){
-  if (typeof script !== 'string') return undefined;
-  if (!a_db[script]) a_db[script] = io.slurp(script);
-  var padawan = Object.create(actor);
-  eval_env(a_db[script], padawan);
-
-  if (typeof config === 'object')
-    Object.merge(padawan,config);
-
-  padawan.padawans = [];
-  padawan.timers = [];
-  padawan.master = this;
-  Object.hide(padawan, "master","timers", "padawans");
-  this.padawans.push(padawan);
-  return padawan;
-};
-
-actor.spawn.doc = `Create a new actor, using this actor as the master, initializing it with 'script' and with data (as a JSON or Nota file) from 'config'.`;
-
-actor.timers = [];
-actor.kill = function(){
-  if (this.__dead__) return;
-  this.timers.forEach(t => t.kill());
-  if (this.master)
-    delete this.master[this.toString()];
-  this.padawans.forEach(p => p.kill());
-  this.padawans = [];
-  this.__dead__ = true;
-  if (typeof this.die === 'function') this.die();
-};
-
-actor.kill.doc = `Remove this actor and all its padawans from existence.`;
-
-actor.delay = function(fn, seconds) {
-  var t = Object.create(timer);
-  t.remain = seconds;
-  t.kill = () => {
-    timer.kill.call(t);
-    delete this.timers[t.toString()];
-  }
-  t.fire = () => {
-    if (this.__dead__) return;
-    fn();
-    t.kill();
-  };
-  Register.appupdate.register(t.update, t);
-  this.timers.push(t);
-  return function() { t.kill(); };
-};
-
-actor.delay.doc = `Call 'fn' after 'seconds' with 'this' set to the actor.`;
-
-actor.master = undefined;
-
-actor.padawans = [];
-
-actor.remaster = function(to){
-  delete this.master.padawans[this.toString()];
-  this.master = to;
-  to.padawans.push(this);
-};
-
-global.app = Object.create(actor);
-
-app.die = function()
+function check_registers(obj)
 {
-  Game.quit();
+    if (typeof obj.update === 'function')
+      obj.timers.push(Register.update.register(obj.update.bind(obj)));
+
+    if (typeof obj.physupdate === 'function')
+      obj.timers.push(Register.physupdate.register(obj.physupdate.bind(obj)));
+
+    if (typeof obj.collide === 'function')
+      register_collide(0, obj.collide.bind(obj), obj.body);
+
+    if (typeof obj.separate === 'function')
+      register_collide(3,obj.separate.bind(obj), obj.body);
+
+    if (typeof obj.draw === 'function')
+      obj.timers.push(Register.draw.register(obj.draw.bind(obj), obj));
+
+    if (typeof obj.debug === 'function')
+      obj.timers.push(Register.debug.register(obj.debug.bind(obj)));
+
+    if (typeof obj.gui === 'function')
+      obj.timers.push(Register.gui.register(obj.gui.bind(obj)));
+
+    for (var k in obj) {
+      if (!k.startswith("on_")) continue;
+      var signal = k.fromfirst("on_");
+      Event.observe(signal, obj, obj[k]);
+    };
+
+    obj.components.forEach(function(x) {
+      if (typeof x.collide === 'function')
+        register_collide(1, x.collide.bind(x), obj.body, x.shape);
+    });
 }
 
 var gameobject_impl = {
   get pos() {
-    Debug.assert(this.level, `Entity ${this.toString()} has no level.`);
-    return this.level.world2this(this.worldpos());
+    Debug.assert(this.master, `Entity ${this.toString()} has no master.`);
+    return this.master.world2this(this.worldpos());
   },
 
   set pos(x) {
-    Debug.assert(this.level, `Entity ${this.toString()} has no level.`);
-    this.set_worldpos(this.level.this2world(x));
+    Debug.assert(this.master, `Entity ${this.toString()} has no master.`);
+    this.set_worldpos(this.master.this2world(x));
   },
 
   get angle() {
-    Debug.assert(this.level, `No level set on ${this.toString()}`);
-    return this.worldangle() - this.level.worldangle();
+    Debug.assert(this.master, `No master set on ${this.toString()}`);
+    return this.worldangle() - this.master.worldangle();
   },
   
   set angle(x) {
@@ -107,18 +70,18 @@ var gameobject_impl = {
       x.pos = Vector.rotate(x.pos, diff);
     });
 
-    this.sworldangle(x-this.level.worldangle());
+    this.sworldangle(x-this.master.worldangle());
   },
 
   get scale() {
-    Debug.assert(this.level, `No level set on ${this.toString()}`);
-    var pscale;
-    if (typeof this.__proto__.scale === 'object')
-      pscale = this.__proto__.scale;
+    Debug.assert(this.master, `No master set on ${this.toString()}`);
+    var pscale = [1,1,1];
+/*    if (typeof this.master.scale === 'object')
+      pscale = this.master.scale;
     else
       pscale = [1,1,1];
-
-    return this.gscale().map((x,i) => x/(this.level.gscale()[i]*pscale[i]));
+*/
+    return this.gscale().map((x,i) => x/(this.master.gscale()[i]*pscale[i]));
   },
 
   set scale(x) {
@@ -187,9 +150,11 @@ var gameobject = {
     return undefined;
   },
   check_dirty() {
+    // TODO: IMPLEMENT
+    return;
     this._ed.urdiff = this.json_obj();
     this._ed.dirty = !Object.empty(this._ed.urdiff);
-    var lur = ur[this.level.ur];
+    var lur = ur[this.master.ur];
     if (!lur) return;
     var lur = lur.objects[this.toString()];
     var d = ediff(this._ed.urdiff,lur);
@@ -202,6 +167,7 @@ var gameobject = {
     selectable: false,
     dirty: false
   },
+  
   namestr() {
     var s = this.toString();
     if (this._ed.dirty)
@@ -209,8 +175,14 @@ var gameobject = {
       else s += "*";
     return s;
   },
+
+  urstr() {
+    if (this._ed.dirty) return "*"+this.ur;
+    return this.ur;
+  },
+  
   full_path() {
-    return this.path_from(Primum);
+    return this.path_from(world);
   },
   /* pin this object to the to object */
   pin(to) {
@@ -270,12 +242,12 @@ var gameobject = {
   
     path_from(o) {
       var p = this.toString();
-      var c = this.level;
-      while (c && c !== o && c !== Primum) {
+      var c = this.master;
+      while (c && c !== o && c !== world) {
         p = c.toString() + "." + p;
-	c = c.level;
+	c = c.master;
       }
-      if (c === Primum) p = "Primum." + p;
+      if (c === world) p = "world." + p;
       return p;
     },
   
@@ -334,37 +306,110 @@ var gameobject = {
       worldangle() { return Math.rad2turn(q_body(2,this.body)); },
       sworldangle(x) { set_body(0,this.body,Math.turn2rad(x)); },
 
-      spawn_from_instance(inst) {
-        return this.spawn(inst.ur, inst);
-      },
-      
-      spawn(ur, data) {
-        ur ??= gameobject;
-	if (typeof ur === 'string') {
-	  //ur = prototypes.get_ur(ur);
-	  
-	}
+      /* spawn an entity
+         text can be:
+	   the file path of a script
+	   an ur object
+	   nothing
+      */
+      spawn(text) {
+	var ent = Object.create(gameobject);
+	
+        if (typeof text === 'object')
+	  text = text.name;
 
-	var go = ur.make(this, data);
-	Object.hide(this, go.toString());
-        return go;
+        if (typeof text === 'undefined')
+	  ent.ur = "new";
+  	else if (typeof text !== 'string') {
+	  console.error(`Must pass in an ur type or a string to make an entity.`);
+	  return;
+	} else {
+	  if (Object.access(ur,text))
+	    ent.ur = text;
+	  else if (io.exists(text))
+	    ent.ur = "script";
+	  else {
+	    console.warn(`Cannot make an entity from '${text}'. Not a valid ur.`);
+	    return;
+	  }
+	}
+	    
+	Object.mixin(ent,gameobject_impl);
+	ent.body = make_gameobject();
+
+	ent.components = {};
+	ent.objects = {};
+	ent.timers = [];
+	 
+	ent.reparent(this);
+
+	 ent._ed = {
+	   selectable: true,
+	   dirty: false,
+	   inst: false,
+	   urdiff: {},
+	 };
+
+	 cmd(113, ent.body, ent); // set the internal obj reference to this obj
+
+	 Object.hide(ent, 'ur','body', 'components', 'objects', '_ed', 'timers', 'master');
+
+       if (ent.ur === 'script')
+         eval_env(io.slurp(text), ent, ent.ur);
+       else if (ent.ur !== 'new')
+         apply_ur(ent.ur, ent);
+
+	 for (var [prop,p] of Object.entries(ent)) {
+	   if (!p) continue;
+	   if (typeof p !== 'object') continue;
+	   if (component.isComponent(p)) continue;
+	   if (!p.comp) continue;
+	   ent[prop] = component[p.comp].make(ent);
+	   Object.merge(ent[prop], p);
+	   ent.components[prop] = ent[prop];
+	 };
+
+
+       check_registers(ent);
+	
+        if (typeof ent.load === 'function') ent.load();
+	if (typeof ent.start === 'function') ent.start();
+	
+        var mur = Object.access(ur,ent.ur);
+        if (mur && !mur.proto)
+	    mur.proto = json.decode(json.encode(ent));
+
+	 if (!Object.empty(ent.objects)) {
+	   var o = ent.objects;
+	   delete ent.objects;
+	   for (var i in o) {
+	     say(`MAKING ${i}`);
+	     var n = ent.spawn(ur[o[i].ur]);
+	     ent.rename_obj(n.toString(), i);
+	     delete o[i].ur;
+	     Object.assign(n, o[i]);
+	   }
+	 }
+
+        return ent;
       },
 
   /* Reparent 'this' to be 'parent's child */
   reparent(parent) {
     Debug.assert(parent, `Tried to reparent ${this.toString()} to nothing.`);
-    if (this.level === parent) {
+    if (this.master === parent) {
       console.warn("not reparenting ...");
-      console.warn(`${this.level} is the same as ${parent}`);
+      console.warn(`${this.master} is the same as ${parent}`);
       return;
     }
 
-    this.level?.remove_obj(this);
+    this.master?.remove_obj(this);
     
-    this.level = parent;
+    this.master = parent;
       
-    function unique_name(list, obj) {
-      var str = obj.toString().replaceAll('.', '_');
+    function unique_name(list, name) {
+      name ??= "new_object";
+      var str = name.replaceAll('.', '_');
       var n = 1;
       var t = str;
       while (t in list) {
@@ -374,7 +419,7 @@ var gameobject = {
       return t;
     };
     
-    var name = unique_name(parent, this.ur);
+    var name = unique_name(Object.keys(parent.objects), this.ur);
 
     parent.objects[name] = this;
     parent[name] = this;
@@ -391,7 +436,7 @@ var gameobject = {
 
   components: {},
   objects: {},
-  level: undefined,
+  master: undefined,
   
     pulse(vec) { set_body(4, this.body, vec);},
     shove(vec) { set_body(12,this.body,vec);},
@@ -427,7 +472,7 @@ var gameobject = {
   /* Make a unique object the same as its prototype */
   revert() {
     var jobj = this.json_obj();
-    var lobj = this.level.__proto__.objects[this.toString()];
+    var lobj = this.master.__proto__.objects[this.toString()];
     delete jobj.objects;
     Object.keys(jobj).forEach(function(x) {
       if (lobj && x in lobj)
@@ -438,53 +483,15 @@ var gameobject = {
     this.sync();
   },
 
-  unregister() {
-    this.timers.forEach(t=>t());
-    this.timers = [];
-  },
-
-  check_registers(obj) {
-    obj.unregister();
-  
-    if (typeof obj.update === 'function')
-      obj.timers.push(Register.update.register(obj.update.bind(obj)));
-
-    if (typeof obj.physupdate === 'function')
-      obj.timers.push(Register.physupdate.register(obj.physupdate.bind(obj)));
-
-    if (typeof obj.collide === 'function')
-      register_collide(0, obj.collide.bind(obj), obj.body);
-
-    if (typeof obj.separate === 'function')
-      register_collide(3,obj.separate.bind(obj), obj.body);
-
-    if (typeof obj.draw === 'function')
-      obj.timers.push(Register.draw.register(obj.draw.bind(obj), obj));
-
-    if (typeof obj.debug === 'function')
-      obj.timers.push(Register.debug.register(obj.debug.bind(obj)));
-
-    if (typeof obj.gui === 'function')
-      obj.timers.push(Register.gui.register(obj.gui.bind(obj)));
-
-    for (var k in obj) {
-      if (!k.startswith("on_")) continue;
-      var signal = k.fromfirst("on_");
-      Event.observe(signal, obj, obj[k]);
-    };
-
-    obj.components.forEach(function(x) {
-      if (typeof x.collide === 'function')
-        register_collide(1, x.collide.bind(x), obj.body, x.shape);
-    });
-  },
   toString() { return "new_object"; },
   
-    flipx() { return this.scale.x < 0; },
-    flipy() { return this.scale.y < 0; },
-    mirror(plane) {
-      this.scale = Vector.reflect(this.scale, plane);
-    },
+  flipx() { return this.scale.x < 0; },
+  flipy() { return this.scale.y < 0; },
+  
+  mirror(plane) {
+    this.scale = Vector.reflect(this.scale, plane);
+  },
+  
     save:true,
     selectable:true,
     ed_locked:false,
@@ -524,17 +531,22 @@ var gameobject = {
 
       /* The unique components of this object. Its diff. */
       json_obj() {
-        var d = ediff(this,this.__proto__);
+        var u = Object.access(ur,this.ur);
+	if (!u) return {};
+	var proto = u.proto;
+	var thiso = json.decode(json.encode(this)); // TODO: SLOW. Used to ignore properties in toJSON of components.
+	
+        var d = ediff(thiso,proto);
 	
 	d ??= {};
  
 	var objects = {};
-	this.__proto__.objects ??= {};
+	proto.objects ??= {};
 	var curobjs = {};
 	for (var o in this.objects)
 	  curobjs[o] = this.objects[o].instance_obj();
 
-        var odiff = ediff(curobjs, this.__proto__.objects);
+        var odiff = ediff(curobjs, proto.objects);
 	if (odiff)
 	  d.objects = curobjs;
 
@@ -546,15 +558,19 @@ var gameobject = {
         return d;
       },
 
-      /* The object needed to store an object as an instance of a level */
+      /* The object needed to store an object as an instance of a master */
       instance_obj() {
         var t = this.transform();
-//	var j = this.json_obj();
-//	Object.assign(t,j);
 	t.ur = this.ur;
 	return t;
       },
 
+      proto() {
+        var u = Object.access(ur,this.ur);
+	if (!u) return {};
+	return u.proto;
+      },
+
       transform() {
         var t = {};
 	t.pos = this.pos;
@@ -562,7 +578,7 @@ var gameobject = {
 	t.angle = Math.places(this.angle,4);
 	if (t.angle === 0) delete t.angle;
 	t.scale = this.scale;
-	t.scale = t.scale.map((x,i) => x/this.__proto__.scale[i]);
+	t.scale = t.scale.map((x,i) => x/this.proto().scale[i]);
 	t.scale = t.scale.map(x => Math.places(x,3));
 	if (t.scale.every(x=>x===1)) delete t.scale;
 	return t;
@@ -577,7 +593,7 @@ var gameobject = {
      },
 
       dup(diff) {
-        var n = this.level.spawn(this.__proto__);
+        var n = this.master.spawn(this.__proto__);
 	Object.totalmerge(n, this.instance_obj());
 	return n;
       },
@@ -592,9 +608,9 @@ var gameobject = {
     Player.do_uncontrol(this);
     register_collide(2, undefined, this.body);
     
-    if (this.level) {
-      this.level.remove_obj(this);
-      this.level = undefined;
+    if (this.master) {
+      this.master.remove_obj(this);
+      this.master = undefined;
     }
     
     if (this.__proto__.instances)
@@ -608,10 +624,9 @@ var gameobject = {
 
     this.clear();
     this.objects = undefined;
-
-
-    if (typeof this.stop === 'function')
-      this.stop();
+    
+    if (typeof this.stop === 'function') this.stop();
+    if (typeof this.die === 'function') this.die();
   },
 
   up() { return [0,1].rotate(this.angle);},
@@ -619,63 +634,10 @@ var gameobject = {
   right() { return [1,0].rotate(this.angle);},
   left() { return [-1,0].rotate(this.angle); },
 
-  make() {
-    var obj = Object.create(this);
-    
-    obj.make = undefined;
-    Object.mixin(obj,gameobject_impl);
-
-    obj.body = make_gameobject();
-
-    obj.components = {};
-    obj.objects = {};
-    obj.timers = [];
-
-    obj._ed = {
-      selectable: true,
-      dirty: false,
-      inst: false,
-      urdiff: {},
-    };
-
-    obj.ur = this.toString();
-    obj.level = undefined;
-
-    obj.reparent(level);
-
-    cmd(113, obj.body, obj); // set the internal obj reference to this obj
-    
-    for (var [prop,p] of Object.entries(this)) {
-      if (!p) continue;
-      if (component.isComponent(p)) {
-        obj[prop] = p.make(obj);
-        obj.components[prop] = obj[prop];
-      }
-    };
-
-    Object.hide(obj, 'ur','body', 'components', 'objects', '_ed', 'level', 'timers');        
-
-    if (this.objects)
-      obj.make_objs(this.objects)
-
-    Object.dainty_assign(obj, this);
-    obj.sync();
-    gameobject.check_registers(obj);
-
-    if (data)
-      Object.dainty_assign(obj,data);
-
-    if (typeof obj.load === 'function') obj.load();
-    if (Game.playing() && typeof obj.start === 'function') obj.start();
-
-    return obj;
-  },
-
   make_objs(objs) {
     for (var prop in objs) {
-      var newobj = this.spawn_from_instance(objs[prop]);
-      if (!newobj) continue;
-      this.rename_obj(newobj.toString(), prop);
+      say(`spawning ${json.encode(objs[prop])}`);
+      var newobj = this.spawn(objs[prop]);
     }
   },
 
@@ -700,10 +662,11 @@ var gameobject = {
     return this.objects[newname];
   },
 
-  add_component(comp, data) {
+  add_component(comp, data, name) {
     data ??= undefined;
     if (typeof comp.make !== 'function') return;
-    var name = prosperon.obj_unique_name(comp.toString(), this);
+    name ??= comp.toString();
+    name = obj_unique_name(name, this);
     this[name] = comp.make(this);
     this[name].comp = comp.toString();
     this.components[name] = this[name];
@@ -724,11 +687,11 @@ gameobject.spawn.doc = `Spawn an entity of type 'ur' on this entity. Returns the
 
 gameobject.doc = {
   doc: "All objects in the game created through spawning have these attributes.",
-  pos: "Position of the object, relative to its level.",
-  angle: "Rotation of this object, relative to its level.",
+  pos: "Position of the object, relative to its master.",
+  angle: "Rotation of this object, relative to its master.",
   velocity: "Velocity of the object, relative to world.",
   angularvelocity: "Angular velocity of the object, relative to the world.",
-  scale: "Scale of the object, relative to its level.",
+  scale: "Scale of the object, relative to its master.",
   flipx: "Check if the object is flipped on its x axis.",
   flipy: "Check if the object is flipped on its y axis.",
   elasticity: `When two objects collide, their elasticities are multiplied together. Their velocities are then multiplied by this value to find their resultant velocities.`,
@@ -757,7 +720,7 @@ gameobject.doc = {
   dup: `Make an exact copy of this object.`,
   transform: `Return an object representing the transform state of this object.`,
   kill: `Remove this object from the world.`,
-  level: "The entity this entity belongs to.",
+  master: "The entity this entity belongs to.",
   delay: 'Run the given function after the given number of seconds has elapsed.',
   cry: 'Make a sound. Can only make one at a time.',
   add_component: 'Add a component to the object by name.',
@@ -773,167 +736,7 @@ gameobject.doc = {
   motor: 'Keeps the relative angular velocity of this body to to at a constant rate. The most simple idea is for one of the bodies to be static, to the other is kept at rate.'
 };
 
-/* Default objects */
-var prototypes = {};
-prototypes.ur_ext = ".jso";
-prototypes.ur = {};
-
-/* Makes a new ur-type from disk. If the ur doesn't exist, it searches on the disk to create it. */
-prototypes.from_file = function(file)
-{
-  var urpath = file;
-  var path = urpath.split('.');
-  if (path.length > 1 && (path.at(-1) === path.at(-2))) {
-    urpath = path.slice(0,-1).join('.');
-    return prototypes.get_ur(urpath);
-  }
-    
-  var upperur = gameobject;
-  
-  if (path.length > 1) {
-    var upur = undefined;
-    var upperpath = path.slice(0,-1);
-    while (!upur && upperpath) {
-      upur = prototypes.get_ur(upperpath.join('/'));
-      upperpath = upperpath.slice(0,-1);
-    }
-    if (upur) upperur = upur;
-  }
-
-  var newur = {};
-  
-  file = file.replaceAll('.','/');
-
-  var jsfile = prototypes.get_ur_file(urpath, prototypes.ur_ext);
-  var jsonfile = prototypes.get_ur_file(urpath, ".json");
-
-  var script = undefined;
-  var json = undefined;
-
-  if (jsfile) script = io.slurp(jsfile);
-  try {
-    if (jsonfile) json = JSON.parse(io.slurp(jsonfile));
-  } catch(e) {
-    console.warn(`Unable to create json from ${jsonfile}. ${e}`);
-  }
-
-  if (!json && !jsfile) {
-    console.warn(`Could not make ur from ${file}`);
-    return undefined;
-  }
-
-  if (script)
-    load_env(jsfile, newur);
-  
-  json ??= {};
-  Object.merge(newur,json);
-
-  Object.entries(newur).forEach(function([k,v]) {
-    if (Object.isObject(v) && Object.isObject(upperur[k]))
-      v.__proto__ = upperur[k];
-  });
-
-  Object.values(newur).forEach(function(v) {
-    if (typeof v !== 'object') return;
-    if (!v.comp) return;
-    v.__proto__ = component[v.comp];
-  });
-      
-  newur.__proto__ = upperur;
-  newur.instances = [];
-  Object.hide(newur, 'instances');
-
-  prototypes.list.push(urpath);
-  newur.toString = function() { return urpath; };
-  ur[urpath] = newur;
-
-  return newur;
-}
-prototypes.from_file.doc = "Create a new ur-type from a given script file.";
-prototypes.list = [];
-
-prototypes.list_ur = function()
-{
-  var list = [];
-  function list_obj(obj, prefix)
-  {
-    prefix ??= "";
-    var list = [];
-    for (var e in obj) {
-      list.push(prefix + e);
-      list.concat(list_obj(obj[e], e + "."));
-    }
-
-    return list;
-  }
-  
-  return list_obj(ur);
-}
-
-prototypes.ur2file = function(urpath)
-{
-  return urpath.replaceAll('.', '/');
-}
-
-prototypes.file2ur = function(file)
-{
-  file = file.strip_ext();
-  file = file.replaceAll('/','.');
-  return file;
-}
-
-prototypes.get_ur = function(name)
-{
-  if (!name) return;
-  if (!name) {
-    console.error(`Can't get ur from ${name}.`);
-    return;
-  }
-  var urpath = name;
-  if (urpath.includes('/'))
-    urpath = prototypes.file2ur(name);
-
-  if (!prototypes.ur[urpath]) {
-    var ur = prototypes.from_file(urpath);
-    if (ur)
-      return ur;
-    else {
-      console.warn(`Could not find prototype using name ${name}.`);
-      return undefined;
-    }
-  } else
-    return prototypes.ur[urpath];
-}
-
-prototypes.get_ur.doc = `Returns an ur, or makes it, for any given type of path
-   could be a file on a disk like ball/big.js
-   could be an ur path like ball.big`;
-
-prototypes.get_ur_file = function(path, ext)
-{
-  var urpath = prototypes.ur2file(path);
-  var file = urpath + ext;
-  if (io.exists(file)) return file;
-  file = urpath + "/" + path.split('.').at(-1) + ext;
-  if (io.exists(file)) return file;
-  return undefined;
-}
-
-prototypes.generate_ur = function(path)
-{
-  var ob = io.glob("**" + prototypes.ur_ext);
-  ob = ob.concat(io.glob("**.json"));
-
-  ob = ob.map(function(path) { return path.set_ext(""); });
-  ob = ob.map(function(path) { return path[0] !== '.' ? path : undefined; });
-  ob = ob.map(function(path) { return path[0] !== '_' ? path : undefined; });
-  ob = ob.filter(x => x !== undefined);
-  ob.forEach(function(name) { prototypes.get_ur(name); });
-}
-
-var ur = prototypes.ur;
-
-prototypes.resavi = function(ur, path)
+var resavi = function(ur, path)
 {
   if (!ur) return path;
   if (path[0] === '/') return path;
@@ -946,7 +749,7 @@ prototypes.resavi = function(ur, path)
   return path;
 }
 
-prototypes.resani = function(ur, path)
+var resani = function(ur, path)
 {
   if (!path) return "";
   if (!ur) return path;
@@ -964,57 +767,88 @@ prototypes.resani = function(ur, path)
   return restry;
 }
 
-prototypes.ur_dir = function(ur)
-{
-  var path = ur.replaceAll('.', '/');
-  console.warn(path);
-  console.warn(io.exists(path));
-  console.warn(`${path} does not exist; sending ${path.dir()}`);
+var ur = {};
+ur._list = [];
+
+/* UR OBJECT
+ur {
+  name: fully qualified name of ur
+  text: file path to the script
+  data: file path to data
+  proto: resultant object of a freshly made entity
 }
+*/
 
-prototypes.ur_json = function(ur)
+/* Apply an ur u to an entity e */
+/* u is given as */
+function apply_ur(u, e)
 {
-  var path = ur.replaceAll('.', '/');
-  if (io.exists(path))
-    path = path + "/" + path.name() + ".json";
-  else
-    path = path + ".json";
-
-  return path;
-}
-
-prototypes.ur_stem =  function(ur)
-{
-  var path = ur.replaceAll('.', '/');
-  if (io.exists(path))
-    return path + "/" + path.name();
-  else
-    return path;
-}
-
-prototypes.ur_file_exts = ['.jso', '.json'];
-
-prototypes.ur_folder = function(ur)
-{
-  var path = ur.replaceAll('.', '/');
-  return io.exists(path);
-}
-
-prototypes.ur_pullout_folder = function(ur)
-{
-  if (!prototypes.ur_folder(ur)) return;
-
-  var stem = prototypes.ur_stem(ur);
+  if (typeof u !== 'string') {
+    console.warn("Must give u as a string.");
+    return;
+  }
   
-/*  prototypes.ur_file_exts.forEach(function(e) {
-    var p = stem + e;
-    if (io.exists(p))
-  */    
+  var urs = u.split('.');
+  var config = {};
+  var topur = ur;
+  for (var i = 0; i < urs.length; i++) {
+    topur = topur[urs[i]];
+    if (!topur) {
+      console.warn(`Ur given by ${u} does not exist. Stopped at ${urs[i]}.`);
+      return;
+    }
+
+    if (topur.text)
+      feval_env(topur.text, e);
+      
+    if (topur.data)
+      Object.merge(config, json.decode(io.slurp(topur.data)));
+  }
+
+  Object.merge(e, config);
+}
+
+function file2fqn(file)
+{
+  var fqn = file.strip_ext();
+  if (fqn.folder_same_name())
+    fqn = fqn.up_path();
+
+  fqn = fqn.replace('/','.');
+  var topur;
+  if (topur = Object.access(ur,fqn)) return topur;
+
+  var fqnlast = fqn.split('.').last();
+
+  if (topur = Object.access(ur,fqn.tolast('.'))) {
+    topur[fqnlast] = {
+      name: fqn
+    };
+    ur._list.push(fqn);
+    return Object.access(ur,fqn);
+  }
+  
+  fqn = fqnlast;
+  
+  ur[fqn] = {
+    name: fqn
+  };
+  ur._list.push(fqn);
+  return ur[fqn];
+}
+
+/* FIND ALL URS IN A PROJECT */
+for (var file of io.glob("**.jso")) {
+  var topur = file2fqn(file);
+  topur.text = file;
+}
+
+for (var file of io.glob("**.json")) {
+  var topur = file2fqn(file);
+  topur.data = file;
 }
 
 return {
   gameobject,
-  actor,
-  prototypes,
   ur
 }
diff --git a/scripts/input.js b/scripts/input.js
index 960b7d9..6c4f2fa 100644
--- a/scripts/input.js
+++ b/scripts/input.js
@@ -203,6 +203,7 @@ var Player = {
     n.pawns = [];
     n.gamepads = [];
     this.players.push(n);
+    this[this.players.length-1] = n;
     return n;
   },
 
@@ -227,9 +228,12 @@ Player.print_pawns.doc = "Print out a list of the current pawn control stack.";
 Player.doc = {};
 Player.doc.players = "A list of current players.";
 
+var player = Player;
+
 return {
   Mouse,
   Keys,
   input,
   Player,
+  player
 };
diff --git a/scripts/render.js b/scripts/render.js
new file mode 100644
index 0000000..8d7c9eb
--- /dev/null
+++ b/scripts/render.js
@@ -0,0 +1,119 @@
+var render = {
+  normal() { cmd(67);},
+  wireframe() { cmd(68); },
+  pass() { },
+};
+
+render.doc = {
+  doc: "Functions for rendering modes.",
+  normal: "Final render with all lighting.",
+  wireframe: "Show only wireframes of models."
+};
+
+render.device = {
+  pc: [1920,1080],
+  macbook_m2: [2560,1664, 13.6],
+  ds_top: [400,240, 3.53],
+  ds_bottom: [320,240, 3.02],
+  playdate: [400,240,2.7],
+  switch: [1280,720, 6.2],
+  switch_lite: [1280,720,5.5],
+  switch_oled: [1280,720,7],
+  dsi: [256,192,3.268],
+  ds: [256,192, 3],
+  dsixl: [256,192,4.2],
+  ipad_air_m2: [2360,1640, 11.97],
+  iphone_se: [1334, 750, 4.7],
+  iphone_12_pro: [2532,1170,6.06],
+  iphone_15: [2556,1179,6.1],
+  gba: [240,160,2.9],
+  gameboy: [160,144,2.48],
+  gbc: [160,144,2.28],
+  steamdeck: [1280,800,7],
+  vita: [960,544,5],
+  psp: [480,272,4.3],
+  imac_m3: [4480,2520,23.5],
+  macbook_pro_m3: [3024,1964, 14.2],
+  ps1: [320,240,5],
+  ps2: [640,480],
+  snes: [256,224],
+  gamecube: [640,480],
+  n64: [320,240],
+  c64: [320,200],
+  macintosh: [512,342,9],
+  gamegear: [160,144,3.2],
+};
+
+render.device.doc = `Device resolutions given as [x,y,inches diagonal].`;
+
+/* All draw in screen space */
+render.point =  function(pos,size,color) {
+    color ??= Color.blue;
+    render.circle(pos,size,color);
+  };
+
+render.line = function(points, color, thickness) {
+    thickness ??= 1;
+    color ??= Color.white;
+    cmd(83, points, color, thickness);
+  };
+
+render.poly = function(points, color) { cmd_points(0,points,color); };
+
+render.circle = function(pos, radius, color) { cmd(115, pos, radius, color); };
+
+render.cross = function(pos, size, color) {
+    color ??= Color.red;
+    var a = [
+      pos.add([0,size]),
+      pos.add([0,-size])
+    ];
+    var b = [
+      pos.add([size,0]),
+      pos.add([-size,0])
+    ];
+    
+    render.line(a,color);
+    render.line(b,color);
+  };
+  
+render.arrow = function(start, end, color, wingspan, wingangle) {
+    color ??= Color.red;
+    wingspan ??= 4;
+    wingangle ??=10;
+    
+    var dir = end.sub(start).normalized();
+    var wing1 = [
+      Vector.rotate(dir, wingangle).scale(wingspan).add(end),
+      end
+    ];
+    var wing2 = [
+      Vector.rotate(dir,-wingangle).scale(wingspan).add(end),
+      end
+    ];
+    render.line([start,end],color);
+    render.line(wing1,color);
+    render.line(wing2,color);
+  };
+
+render.rectangle = function(lowerleft, upperright, color) {
+    var pos = lowerleft.add(upperright).map(x=>x/2);
+    var wh = [upperright.x-lowerleft.x,upperright.y-lowerleft.y];
+    render.box(pos,wh,color);
+  };
+  
+render.box = function(pos, wh, color) {
+    color ??= Color.white;
+    cmd(53, pos, wh, color);
+  };
+
+render.doc = "Draw shapes in screen space.";
+render.circle.doc = "Draw a circle at pos, with a given radius and color.";
+render.cross.doc = "Draw a cross centered at pos, with arm length size.";
+render.arrow.doc = "Draw an arrow from start to end, with wings of length wingspan at angle wingangle.";
+render.poly.doc = "Draw a concave polygon from a set of points.";
+render.rectangle.doc = "Draw a rectangle, with its corners at lowerleft and upperright.";
+render.box.doc = "Draw a box centered at pos, with width and height in the tuple wh.";
+render.line.doc = "Draw a line from a set of points, and a given thickness.";
+
+return {render};
diff --git a/scripts/sound.js b/scripts/sound.js
index 2b15a53..e5d51dd 100644
--- a/scripts/sound.js
+++ b/scripts/sound.js
@@ -113,3 +113,5 @@ Object.mixin(cmd(180).__proto__, {
   pct() { return this.time()/this.length(); },
 });
 */
+
+return {audio};
diff --git a/scripts/spline.js b/scripts/spline.js
new file mode 100644
index 0000000..fb43bce
--- /dev/null
+++ b/scripts/spline.js
@@ -0,0 +1,112 @@
+var Spline = {};
+Spline.sample_angle = function(type, points, angle) {
+  return spline_cmd(0, type, points[0].length, points, angle);
+}
+
+Spline.bezier_loop = function(cp)
+{
+  cp.push(Vector.reflect_point(cp.at(-2),cp.at(-1)));
+  cp.push(Vector.reflect_point(cp[1],cp[0]));
+  cp.push(cp[0].slice());
+  return cp;
+}
+
+Spline.bezier_node_count = function(cp)
+{
+  if (cp.length === 4) return 2;
+  return 2 + (cp.length-4)/3;
+}
+
+Spline.is_bezier = function(t) { return t === Spline.type.bezier; }
+Spline.is_catmull = function(t) { return t === Spline.type.catmull; }
+
+Spline.bezier2catmull = function(b)
+{
+  var c = [];
+  for (var i = 0; i < b.length; i += 3)
+    c.push(b[i]);
+  return c;
+}
+
+Spline.catmull2bezier = function(c)
+{
+  var b = [];
+  for (var i = 1; i < c.length-2; i++) {
+    b.push(c[i].slice());
+    b.push(c[i+1].sub(c[i-1]).scale(0.25).add(c[i]));
+    b.push(c[i].sub(c[i+2]).scale(0.25).add(c[i+1]));
+  }
+  b.push(c[c.length-2]);
+  return b;
+}
+
+Spline.catmull_loop = function(cp)
+{
+  cp = cp.slice();
+  cp.unshift(cp.last());
+  cp.push(cp[1]);
+  cp.push(cp[2]);
+  return cp;
+}
+
+Spline.catmull_caps = function(cp)
+{
+  cp = cp.slice();
+  cp.unshift(cp[0].sub(cp[1]).add(cp[0]));
+  cp.push(cp.last().sub(cp.at(-2).add(cp.last())));
+  return cp;
+}
+
+Spline.catmull2bezier.doc = "Given a set of control points C for a camtull-rom type curve, return a set of cubic bezier points to give the same curve."
+
+Spline.type = {
+  catmull: 0,
+  bezier: 1,
+  bspline: 2,
+  cubichermite: 3
+};
+
+Spline.bezier_tan_partner = function(points, i)
+{
+  if (i%3 === 0) return undefined;
+  var partner_i = (i%3) === 2 ? i-1 : i+1;
+  return points[i];
+}
+
+Spline.bezier_cp_mirror = function(points, i)
+{
+  if (i%3 === 0) return undefined;
+  var partner_i = (i%3) === 2 ? i+2 : i-2;
+  var node_i = (i%3) === 2 ? i+1 : i-1;
+  if (partner_i >= points.length || node_i >= points.length) return;
+  points[partner_i] = points[node_i].sub(points[i]).add(points[node_i]);
+}
+
+Spline.bezier_point_handles = function(points, i)
+{
+  if (!Spline.bezier_is_node(points,i)) return [];
+  var a = i-1;
+  var b = i+1;
+  var c = []
+  if (a > 0)
+    c.push(a);
+
+  if (b < points.length)
+    c.push(b);
+
+  return c;
+}
+
+Spline.bezier_nodes = function(points)
+{
+  var c = [];
+  for (var i = 0; i < points.length; i+=3)
+    c.push(points[i].slice());
+
+  return c;
+}
+
+Spline.bezier_is_node = function(points, i) { return i%3 === 0; }
+Spline.bezier_is_handle = function(points, i) { return !Spline.bezier_is_node(points,i); }
+
+return {Spline};
diff --git a/scripts/std.js b/scripts/std.js
index 0187d20..ae3f54e 100644
--- a/scripts/std.js
+++ b/scripts/std.js
@@ -238,6 +238,10 @@ Cmdline.register_order("init", function() {
   
 }, "Turn the directory into a Prosperon game.");
 
+Cmdline.register_order("debug", function() {
+  Cmdline.orders.play();
+}, "Play the game with debugging enabled.");
+
 Cmdline.register_order("play", function() {
   if (!io.exists(".prosperon/project")) {
     say("No game to play. Try making one with 'prosperon init'.");
@@ -247,8 +251,8 @@ Cmdline.register_order("play", function() {
   var project = json.decode(io.slurp(".prosperon/project"));
   
   Game.engine_start(function() {
-    load("config.js");
-    load("game.js");
+    global.mixin("config.js");
+    global.mixin("game.js");
     if (project.icon) Window.icon(project.icon);
     if (project.title) Window.title(project.title);
   });  
@@ -379,35 +383,6 @@ function cmd_args(cmdargs)
 
 Cmdline.register_order("clean", function(argv) {
   say("Cleaning not implemented.");
-  return;
-  
-  var f = argv[0];
-  if (argv.length === 0) {
-    Cmdline.print_order("clean");
-    return;
-  }
-  
-  if (!io.exists(f)) {
-    say(`File ${f} does not exist.`);
-    return;
-  }
-
-  prototypes.generate_ur();
-
-  var j = json.decode(io.slurp(f));
-
-  for (var k in j)
-    if (k in j.objects)
-      delete j[k];
-
-  console.warn(j);
-
-  for (var k in j.objects) {
-    var o = j.objects[k];
-    samediff(o, ur[o.ur]);
-  }
-
-  say(j);
 }, "Clean up a given object file.", "JSON ...");
 
 Cmdline.register_cmd("l", function(n) {
diff --git a/scripts/tween.js b/scripts/tween.js
index 2c71260..d2f7e95 100644
--- a/scripts/tween.js
+++ b/scripts/tween.js
@@ -196,3 +196,5 @@ var Tween = {
 };
 
 Tween.make = Tween.start;
+
+return {Tween, Ease};
diff --git a/source/engine/jsffi.c b/source/engine/jsffi.c
index e09d0d0..c4a77ac 100644
--- a/source/engine/jsffi.c
+++ b/source/engine/jsffi.c
@@ -212,8 +212,9 @@ double js2number(JSValue v) {
 
 void *js2ptr(JSValue v) { return JS_GetOpaque(v,js_ptr_id); }
 
-JSValue float2js(double g) { return JS_NewFloat64(js, g);}
-JSValue number2js(double g) { return float2js(g); }
+JSValue number2js(double g) {
+  return JS_NewFloat64(js,g);
+}
 struct sprite *js2sprite(JSValue v) { return id2sprite(js2int(v)); }
 
 JSValue ptr2js(void *ptr) {
@@ -1085,6 +1086,11 @@ JSValue duk_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
       ret = number2js(get_timescale());
       break;
 
+    case 122:
+      str = JS_ToCString(js, argv[1]);
+      ret = file_eval_env(str, argv[2]);
+      break;
+
     case 123:
       str = JS_ToCString(js, argv[1]);
       str2 = JS_ToCString(js, argv[3]);
@@ -1137,7 +1143,7 @@ JSValue duk_cmd(JSContext *js, JSValueConst this, int argc, JSValueConst *argv)
       break;
       
     case 135:
-      ret = float2js(cam_zoom());
+      ret = number2js(cam_zoom());
       break;
 
     case 136:
diff --git a/source/engine/nota.c b/source/engine/nota.c
index 330b77c..86ef85d 100644
--- a/source/engine/nota.c
+++ b/source/engine/nota.c
@@ -117,7 +117,6 @@ char *nota_write_int(long long n, char *nota)
   return nota_continue_num(n, nota, 3);
 }
 
-
 #define NOTA_DBL_PREC 6
 #define xstr(s) str(s)
 #define str(s) #s
diff --git a/source/engine/nota.h b/source/engine/nota.h
index bccdad5..173e3b5 100644
--- a/source/engine/nota.h
+++ b/source/engine/nota.h
@@ -11,9 +11,10 @@
 
 #define NOTA_FALSE 0x00
 #define NOTA_TRUE 0x01
+#define NOTA_NULL 0x02
+#define NOTA_INF 0x03
 #define NOTA_PRIVATE 0x08
 #define NOTA_SYSTEM 0x09
-#define NOTA_NULL 0x02
 
 typedef struct NOTA {
   char *head;
diff --git a/source/engine/resources.c b/source/engine/resources.c
index bf57e99..3ad22e9 100644
--- a/source/engine/resources.c
+++ b/source/engine/resources.c
@@ -148,10 +148,8 @@ void *cdb_slurp(struct cdb *cdb, const char *file, size_t *size)
 
 int fexists(const char *path)
 {
-  return !access(path,R_OK);
-  
   int len = strlen(path);
-  if (cdb_find(&game_cdb, path,len)) return 1;
+  if (cdb_find(&game_cdb, path, len)) return 1;
   else if (cdb_find(&corecdb, path, len)) return 1;
   else if (!access(path, R_OK)) return 1;
 
diff --git a/source/engine/script.c b/source/engine/script.c
index 90037b0..8bd6b53 100644
--- a/source/engine/script.c
+++ b/source/engine/script.c
@@ -58,7 +58,7 @@ void script_startup() {
   rt = JS_NewRuntime();
   js = JS_NewContext(rt);
   
-  sh_new_arena(jsstrs);  
+  sh_new_arena(jsstrs);
 
   ffi_load();
 
@@ -231,7 +231,7 @@ JSValue eval_file_env(const char *script, const char *file, JSValue env)
   return v;
 }
 
-void file_eval_env(const char *file, JSValue env)
+JSValue file_eval_env(const char *file, JSValue env)
 {
   size_t len;
   char *script = slurp_text(file, &len);
diff --git a/source/engine/script.h b/source/engine/script.h
index 6e3907c..cfd8f6e 100644
--- a/source/engine/script.h
+++ b/source/engine/script.h
@@ -48,7 +48,7 @@ void call_callee(struct callee *c);
 void script_callee(struct callee c, int argc, JSValue *argv);
 int script_has_sym(void *sym);
 void script_eval_w_env(const char *s, JSValue env, const char *file);
-void file_eval_env(const char *file, JSValue env);
+JSValue file_eval_env(const char *file, JSValue env);
 
 time_t file_mod_secs(const char *file);
 
diff --git a/source/engine/warp.c b/source/engine/warp.c
index 57f29da..dfd47b1 100644
--- a/source/engine/warp.c
+++ b/source/engine/warp.c
@@ -4,16 +4,6 @@
 
 static warp_gravity **warps = NULL;
 
-warp_gravity *warp_gravity_make()
-{
-  warp_gravity *n = calloc(sizeof(*n),1);
-  n->strength = 9.8;
-  n->t.scale = (HMM_Vec3){0,-1,0};
-  n->planar_force = HMM_MulV3F(n->t.scale, n->strength);
-  arrput(warps, n);
-  return n;
-}
-
 warp_damp *warp_damp_make()
 {
   warp_damp *d = calloc(sizeof(*d),1);
@@ -21,6 +11,17 @@ warp_damp *warp_damp_make()
 }
 
 void warp_damp_free(warp_damp *d) { free(d); }
+
+warp_gravity *warp_gravity_make()
+{
+  warp_gravity *n = calloc(sizeof(*n),1);
+  n->strength = 9.8;
+  n->t.scale = (HMM_Vec3){0,-1,0};
+  n->planar_force = (HMM_Vec3){0,-1,0};
+  arrput(warps, n);
+  return n;
+}
+
 void warp_gravity_free(warp_gravity *n) {
   for (int i = 0; i < arrlen(warps); i++) {
     if (warps[i] == n) {
@@ -47,7 +48,7 @@ HMM_Vec3 warp_gravity_force(warp_gravity *g, HMM_Vec3 pos)
     HMM_Vec3 norm = HMM_NormV3(HMM_SubV3(g->t.pos, pos));
     return HMM_MulV3F(norm,g->strength);
   } else {
-    return g->planar_force;
+    return HMM_MulV3F(g->planar_force, g->strength);
   }
 }
 
diff --git a/source/engine/warp.h b/source/engine/warp.h
index 57dbe16..c7845e9 100644
--- a/source/engine/warp.h
+++ b/source/engine/warp.h
@@ -44,5 +44,4 @@ warp_damp *warp_damp_make();
 void warp_gravity_free(warp_gravity *g);
 void warp_damp_free(warp_damp *d);
 
-
 #endif