diff --git a/scripts/actor.js b/scripts/actor.js
index e67f0caf..0a8d8c28 100644
--- a/scripts/actor.js
+++ b/scripts/actor.js
@@ -1,7 +1,6 @@
 var actor = {};
 
 var actor_urs = {};
-var script_times = {};
 
 var actor_spawns = {};
 
@@ -17,7 +16,6 @@ globalThis.class_use = function (script, config, base, callback) {
   if (!actor_urs[file]) {
     var newur = Object.create(base);
     actor_urs[file] = newur;
-    script_times[file] = io.mod(file);
     actor_spawns[file] = [];
   }
 
@@ -61,28 +59,23 @@ actor.__stats = function () {
   return stats;
 };
 
-actor.hotreload = function () {
-  for (var i in script_times) {
-    if (io.mod(i) > script_times[i]) {
-      script_times[i] = io.mod(i);
-      var script = Resources.replstrs(i);
-      script = `(function() {
-  	              var self = this;
-	                var $ = this.__proto__;
-                  ${script};
-               })`;
-      var fn = os.eval(i, script);
+actor.hotreload = function (file) {
+  var script = Resources.replstrs(file);
+  script = `(function() {
+             var self = this;
+             var $ = this.__proto__;
+              ${script};
+           })`;
+  var fn = os.eval(file, script);
 
-      for (var obj of actor_spawns[i]) {
-        var a = obj;
-        a.timers.forEachRight(t=>t());
-        a.timers = [];
-        var save = json.decode(json.encode(a));
-        fn.call(a);
-        Object.merge(a, save);
-        check_registers(a);
-      }
-    }
+  for (var obj of actor_spawns[file]) {
+    var a = obj;
+    a.timers.forEachRight(t=>t());
+    a.timers = [];
+    var save = json.decode(json.encode(a));
+    fn.call(a);
+    Object.merge(a, save);
+    check_registers(a);
   }
 };
 
diff --git a/scripts/engine.js b/scripts/engine.js
index 0365c01e..de01024a 100644
--- a/scripts/engine.js
+++ b/scripts/engine.js
@@ -53,6 +53,7 @@ Resources.rm_fn = function rm_fn(fn, text) {
 };
 Resources.rm_fn.doc = "Remove calls to a given function from a given text script.";
 
+// Normalizes paths for use in prosperon
 Resources.replpath = function replpath(str, path) {
   if (!str) return str;
   if (str[0] === "/") return str.rm(0);
@@ -70,6 +71,7 @@ Resources.replpath = function replpath(str, path) {
   return str;
 };
 
+// Given a script path, loads it, and replaces certain function calls to conform to environment
 Resources.replstrs = function replstrs(path) {
   if (!path) return;
   var script = io.slurp(path);
@@ -160,7 +162,6 @@ function find_ext(file, ext, root = "") {
   }
 
   var all_files = io.glob(`**/${file}.*`);
-  all_files = all_files.filter(x => !x.startsWith('.'));
   var find = undefined;
   for (var e of ext) {
     var finds = all_files.filter(x => x.ext() === e);
@@ -328,9 +329,9 @@ io.exists = function(path)
 var tmpslurp = io.slurp;
 io.slurp = function(path)
 {
-  path = Resources.replpath(path);
-  var ret = tmpslurp(path, true) || core_db.slurp(path, true);
-  if (!ret) console.info(`could not slurp ${path}`);
+  var findpath = Resources.replpath(path);
+  var ret = tmpslurp(findpath, true) || core_db.slurp(findpath, true);
+  if (!ret) console.info(`could not slurp path ${path} as ${findpath}`)
   return ret;
 }
 
@@ -410,13 +411,4 @@ bare_use("preconfig.js");
 if (!profile.enabled) use = stripped_use;
 
 Object.assign(globalThis, use("prosperon.js"));
-
-/*app.interval(_ => {
-  profile.report("hotreload");
-  actor.hotreload();
-  render.hotreload();
-  game.tex_hotreload();
-  repl.hotreload();
-  profile.endreport("hotreload");  
-}, 1);
-*/
+ 
diff --git a/scripts/prosperon.js b/scripts/prosperon.js
index 1bd1c10e..4ef39493 100644
--- a/scripts/prosperon.js
+++ b/scripts/prosperon.js
@@ -178,21 +178,42 @@ game.doc.pause = "Pause game simulation.";
 game.doc.play = "Resume or start game simulation.";
 game.doc.camera = "Current camera.";
 
-game.tex_hotreload = function () {
-  return;
-  for (var path in game.texture.cache) {
-    if (io.mod(path) > game.texture.time_cache[path]) {
-      var tex = game.texture.cache[path];
-      game.texture.time_cache[path] = io.mod(path);
-      SpriteAnim.hotreload(path);
-      os.texture_swap(path, game.texture.cache[path]);
-      for (var sprite of Object.values(allsprites)) {
-        if (sprite.texture == tex) {
-          sprite.tex_sync();
-        }
+game.tex_hotreload = function (file) {
+  if (!(file in game.texture.cache)) return;
+  var data = io.slurpbytes(file);
+  var tex;
+  if (file.endsWith('.gif')) {
+    var anim = os.make_gif(data);
+    if (anim.frames.length !== 1) return;
+    console.info(json.encode(anim));
+    tex = anim.frames[0].texture;
+  } else if (file.endsWith('.ase') || file.endsWith('.aseprite')) {
+    var anim = os.make_aseprite(data);
+    if (anim.texture) // single picture
+      tex = anim.texture;
+    else {
+      var oldanim = game.texture.cache[file];
+      // load all into gpu
+      for (var a in anim) {
+        oldanim[a] = anim[a];
+        for (let frame of anim[a].frames)
+          frame.texture.load_gpu();
       }
+      return;
     }
-  }
+  } else
+    tex = os.make_texture(data);
+  
+  var img = game.texture.cache[file];
+  tex.load_gpu();
+  console.info(`replacing ${json.encode(img)}`)
+  img.texture = tex;
+  img.rect = {
+    x:0,
+    y:0,
+    width:1,
+    height:1
+  };
 };
 
 var image = {};
@@ -303,6 +324,7 @@ game.is_image = function(obj)
 
 // Any request to it returns an image, which is a texture and rect. But they can
 game.texture = function (path) {
+  if (typeof path !== 'string') throw new Error('need a string for game.texture')
   var parts = path.split(':');
   path = Resources.find_image(parts[0]);
 
@@ -343,8 +365,16 @@ game.texture = function (path) {
   var ext = path.ext();    
 
   if (ext === 'ase' || ext === 'aseprite') {
-    anim = os.make_aseprite(path);
+    console.info(`making out of an aseprite for ${path}`);
+    anim = os.make_aseprite(io.slurpbytes(path));
+    console.info(`raw anim is ${json.encode(anim)}`)
     if (!anim) return;
+    if (anim.texture) {
+      // it was a single image
+      anim.texture.load_gpu();
+      game.texture.cache[path] = anim;
+      return anim;
+    }
     // load all into gpu
     for (var a in anim) 
       for (let frame of anim[a].frames)
@@ -357,7 +387,7 @@ game.texture = function (path) {
   }
 
   if (ext === 'gif') {
-    anim = os.make_gif(io.slurp(path));
+    anim = os.make_gif(io.slurpbytes(path));
     if (!anim) return;
     if (anim.frames.length === 1) {
       // in this case, it's just a single image
diff --git a/scripts/render.js b/scripts/render.js
index da5fdbb5..ec06ea48 100644
--- a/scripts/render.js
+++ b/scripts/render.js
@@ -1433,17 +1433,11 @@ try{
   profile.report("imgui");
   if (debug.show) imgui_fn();
   profile.endreport("imgui");
-
-//  render.end_pass();
-
-//  render.commit();
-//  profile.report_frame(profile.secs(profile.now()) - frame_t);  
-
-//  endframe();
 } catch(e) {
   throw e;
 } finally {
   render.end_pass();
+  profile.report_frame(profile.secs(profile.now()) - frame_t);    
   render.commit();
   endframe();
 }
@@ -1455,6 +1449,12 @@ function dmon_cb(e)
 {
   if (e.file.startsWith('.')) return;
   console.info(json.encode(e))
+  if (e.file.endsWith('.js'))
+    actor.hotreload(e.file);
+  else if (Resources.is_image(e.file))
+    game.tex_hotreload(e.file);
+  else if (e.file.endsWith('.cg')) // shader
+    render.hotreload(e.file);
 }
 
 prosperon.process = function process() {
diff --git a/scripts/std.js b/scripts/std.js
index dc6fb35b..49806087 100644
--- a/scripts/std.js
+++ b/scripts/std.js
@@ -235,7 +235,7 @@ Cmdline.register_order(
       else global.app = actor.spawn("nogame.js");
 
       var icon = game.texture(project.icon);
-      if (icon) window.set_icon(game.texture(icon.texture));
+      if (icon) window.set_icon(icon.texture);
       game.camera = world.spawn("camera2d");
     });
   },
diff --git a/source/jsffi.c b/source/jsffi.c
index dcc33a42..bca219fb 100644
--- a/source/jsffi.c
+++ b/source/jsffi.c
@@ -2393,21 +2393,20 @@ JSC_CCALL(os_obj_size,
 JSC_CCALL(os_make_texture,
   size_t len;
   void *raw = JS_GetArrayBuffer(js, &len, argv[0]);
-  if (!raw) {
-    JS_ThrowReferenceError(js, "could not load texture with array buffer");
-    return JS_EXCEPTION;
-  }
-  ret = texture2js(texture_fromdata(raw, len));
+  if (!raw) return JS_ThrowReferenceError(js, "could not load texture with array buffer");
+
+  texture *tex = texture_fromdata(raw, len);
+  if (!tex) return JS_ThrowReferenceError(js, "unable to make texture from the given array buffer");
+
+  ret = texture2js(tex);
   JS_SetPropertyStr(js, ret, "path", JS_DupValue(js,argv[0]));
 )
 
 JSC_CCALL(os_make_gif,
   size_t rawlen;
   void *raw = JS_GetArrayBuffer(js, &rawlen, argv[0]);
-  if (!raw) {
-    JS_ThrowReferenceError(js, "could not load gif from supplied array buffer");
-    return JS_UNDEFINED;
-  }
+  if (!raw) return JS_ThrowReferenceError(js, "could not load gif from supplied array buffer");
+
   int n;
   texture *tex = calloc(1,sizeof(*tex));
   int frames;
@@ -2442,20 +2441,43 @@ JSC_CCALL(os_make_gif,
   ret = gif;
 )
 
+JSValue aseframe2js(JSContext *js, ase_frame_t aframe)
+{
+  JSValue frame = JS_NewObject(js);
+  texture *tex = calloc(1,sizeof(*tex));
+  tex->width = aframe.ase->w;
+  tex->height = aframe.ase->h;
+  tex->data = malloc(tex->width*tex->height*4);
+  memcpy(tex->data, aframe.pixels, tex->width*tex->height*4);
+  js_setpropstr(frame, "texture", texture2js(tex));
+  js_setpropstr(frame, "rect", rect2js((rect){.x=0,.y=0,.w=1,.h=1}));
+  js_setpropstr(frame, "time", number2js((float)aframe.duration_milliseconds/1000.0));
+  return frame;
+}
+
 JSC_CCALL(os_make_aseprite,
   size_t rawlen;
   void *raw = JS_GetArrayBuffer(js,&rawlen,argv[0]);
-  if (!raw) return JS_UNDEFINED;
+  if (!raw) return JS_ThrowReferenceError(js, "could not load aseprite from supplied array buffer");
   
   ase_t *ase = cute_aseprite_load_from_memory(raw, rawlen, NULL);
 
-  JSValue obj = JS_NewObject(js);
-
   int w = ase->w;
   int h = ase->h;
 
   int pixels = w*h;
 
+  if (ase->tag_count == 0) {
+    // we're dealing with a single frame image, or single animation
+    if (ase->frame_count == 1) {
+      JSValue obj = aseframe2js(js,ase->frames[0]);
+      cute_aseprite_free(ase);
+      return obj;
+    }
+  }
+
+  JSValue obj = JS_NewObject(js);
+
   for (int t = 0; t < ase->tag_count; t++) {
     ase_tag_t tag = ase->tags[t];
     JSValue anim = JS_NewObject(js);
@@ -2475,17 +2497,7 @@ JSC_CCALL(os_make_aseprite,
     int _frame = 0;
     JSValue frames = JS_NewArray(js);
     for (int f = tag.from_frame; f <= tag.to_frame; f++) {
-      ase_frame_t aframe = ase->frames[f];
-      JSValue frame = JS_NewObject(js);
-
-      texture *tex = calloc(1,sizeof(*tex));
-      tex->width = w;
-      tex->height = h;
-      tex->data = malloc(w*h*4);
-      memcpy(tex->data, aframe.pixels, w*h*4);
-      js_setpropstr(frame, "texture", texture2js(tex));
-      js_setpropstr(frame, "rect", rect2js((rect){.x=0,.y=0,.w=1,.h=1}));
-      js_setpropstr(frame, "time", number2js((float)aframe.duration_milliseconds/1000.0));      
+      JSValue frame = aseframe2js(js,ase->frames[f]);
       js_setprop_num(frames, _frame, frame);
       _frame++;
     }
@@ -2498,13 +2510,6 @@ JSC_CCALL(os_make_aseprite,
   cute_aseprite_free(ase);
 )
 
-JSC_SCALL(os_texture_swap,
-  texture *old = js2texture(argv[1]);
-  texture *tex = texture_from_file(str);
-  JS_SetOpaque(argv[1], tex);
-  texture_free(old);
-)
-
 JSC_CCALL(os_make_tex_data,
   ret = texture2js(texture_empty(js2number(argv[0]), js2number(argv[1])))
 )
@@ -2788,7 +2793,6 @@ static const JSCFunctionListEntry js_os_funcs[] = {
   MIST_FUNC_DEF(os, make_texture, 1),
   MIST_FUNC_DEF(os, make_gif, 1),
   MIST_FUNC_DEF(os, make_aseprite, 1),
-  MIST_FUNC_DEF(os, texture_swap, 2),
   MIST_FUNC_DEF(os, make_tex_data, 3),
   MIST_FUNC_DEF(os, make_font, 2),
   MIST_FUNC_DEF(os, make_transform, 0),
diff --git a/source/script.c b/source/script.c
index 44993fe5..08b11ebc 100644
--- a/source/script.c
+++ b/source/script.c
@@ -69,7 +69,19 @@ static uint8_t *js_load_file(JSContext *ctx, size_t *pbuf_len, const char *filen
 
 void script_startup() {
   rt = JS_NewRuntime();
-  js = JS_NewContext(rt);
+  js = JS_NewContextRaw(rt);
+  JS_AddIntrinsicBaseObjects(js);
+  JS_AddIntrinsicEval(js);
+  JS_AddIntrinsicRegExp(js);
+  JS_AddIntrinsicJSON(js);
+  JS_AddIntrinsicMapSet(js);
+  JS_AddIntrinsicTypedArrays(js);
+  JS_AddIntrinsicPromise(js);
+  JS_AddIntrinsicProxy(js);
+  JS_AddIntrinsicBigInt(js);
+  JS_AddIntrinsicBigFloat(js);
+  JS_AddIntrinsicBigDecimal(js);
+  JS_AddIntrinsicOperators(js);
 
   ffi_load();