22 changed files with 113 additions and 1403 deletions
--- a/662
+++ b/662
@ -1,662 +0,0 @@
                    GNU AFFERO GENERAL PUBLIC LICENSE
                       Version 3, 19 November 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
                            Preamble
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                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
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 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) {{ year }}  {{ organization }}
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    This program is distributed in the hope that it will be useful,
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    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If your software can interact with users remotely through a computer
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  You should also get your employer (if you work as a programmer) or school,
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 For more information on this, and how to apply and follow the GNU AGPL, see
 <http://www.gnu.org/licenses/>.
--- a/README.md
+++ b/README.md
@ -7,10 +7,9 @@ Download/run the binaries for your platform in the releases section.<br>
 Developers can run it via [Lua](https://lua.org), [LÖVR](https://lovr.org) or [LÖVE2D](https://love2d.org)
 ```
-$ cd xurfer
+$ love xurfer <url> [..]         # if you have LÖVE2D installed (>v12)
-$ love . <url_or_file> [..]       # if you have LÖVE2D installed (>v12)
+$ lovr xurfer <url> [..]         # if you have LÖVR installed
-$ lovr . <url_or_file> [..]       # if you have LÖVR installed
+$ lua xurfer/main.lua <url> [..] # if you have lua installed
 $ lua main.lua <url_or_file> [..] # if you have lua installed
 ```
 **Example**: lovr xurfer <a href="https://snips.sh/f/_U5-XctEVE?r=1">https://snips.sh/f/_U5-XctEVE?r=1</a>
--- a/xurfer/conf.lua
+++ b/xurfer/conf.lua
@ -11,4 +11,5 @@ package.path = package.path .. ';' ..
               arg[0] .. '/' .. runtime .. '/?/init.lua;' .. 
               arg[0] .. '/lib/?.lua'
 require( runtime .. "/conf")
--- a/xurfer/ecs.lua
+++ b/xurfer/ecs.lua
@ -7,16 +7,8 @@ ecs.init = function()
  baseEntify.updatethread = true
  function baseEntify:onAdd(obj)
    obj.commit = api.util.commit( api.world, obj, api )
    api.world.commit = api.util.commit( api.world, false, api)
  end
  ecs.addSystem( api.world, baseEntify )
 end
 ecs.clear = function()
  api.ext.exec("onClear")
  api.ecs.clearEntities( api.world )
  api.ecs.update( api.world )
  api.world.commit()
 end
 return ecs
--- a/xurfer/ext/3DFile/main.lua
+++ b/xurfer/ext/3DFile/main.lua
@ -6,26 +6,16 @@ return {
  enabled = true,
  onURI = function(obj)
-    if( obj.URL ~= nil and (obj.URLResponse ~= nil or obj.URL.protocol == 'file') and
+    if( obj.URL ~= nil and obj.URLResponse ~= nil and
       (obj.URL.extension == 'GLB'   or
        obj.URL.extension == 'GLTF'  or 
        obj.URL.extension == 'OBJ')) then 
-      if obj.URLResponse.ok or obj.URL.protocol == 'file' then 
+      if obj.URLResponse.ok then 
        obj.root  = false 
        if obj.URI.target == '_top' then
          obj.root = true
          api.ext.URI.current = obj.URL -- set current url
        end
        obj.x = obj.x or 0
        obj.y = obj.y or 0
        obj.z = obj.z or 0
        obj.scale = obj.scale or 1
        if obj.URL.protocol == 'file' then
          obj.model = api.graphics.newModel( obj.URL.string )
        else
        obj.model = api.graphics.newModel( api.data.newBlob( obj.URLResponse.data) )
-        end
+        obj.root  = (obj.URI.target == '_top')
-        api.ecs.add( api.world, obj )
+        if obj.x == nil then obj.x = 0 end
        if obj.y == nil then obj.y = 0 end
        if obj.z == nil then obj.z = 0 end
        obj.commit('on3DFile') -- notify systems
      else
        print("[3DFile] error: could not load " .. obj.URL.string )
--- a/xurfer/ext/AudioFile/main.lua
+++ b/xurfer/ext/AudioFile/main.lua
@ -1,34 +0,0 @@
 local api = ...
 local ecs = api.ecs
 return {
  name = "AudioFile",
  enabled = true,
  onURI = function(obj)
    if( obj.URL ~= nil and (obj.URLResponse ~= nil or obj.URL.protocol == 'file') and
       (obj.URL.extension == 'OGG'   or
        obj.URL.extension == 'WAV'  or 
        obj.URL.extension == 'MP3')) then 
      if obj.URLResponse.ok or obj.URL.protocol == 'file' then 
        obj.x = obj.x or 0
        obj.y = obj.y or 0
        obj.z = obj.z or 0
        local opts = {
          spatial = obj.x == 0 and obj.y == 0 and obj.z == 0
        }
        if obj.URL.protocol == 'file' then
          obj.audio = api.audio.newSource( obj.URL.file, opts)
        else
          obj.audio = api.audio.newSource( api.data.newBlob( obj.URLResponse.data), opts )
        end
        api.ecs.add( api.world, obj )
        obj.commit('onAudioFile') -- notify systems
        obj.audio:play()
      else
        print("[AudioFile] error: could not load " .. obj.URL.string )
      end
    end
  end
 }
--- a/xurfer/ext/URI/main.lua
+++ b/xurfer/ext/URI/main.lua
@ -4,7 +4,6 @@ local ecs = api.ecs
 return {
  name = "URI",
  enabled = true,
  current = {}, -- will hold the most recent (_top) URL object
  init = function() 
    local urlListener 
@ -20,27 +19,23 @@ return {
  to = function(URI,refererer, obj)
    obj = obj or {}
-    print("[i] loading URL: " .. URI.url)
+    local msg = "[i] loading"
    print("[i] loading " .. URI.url)
    obj.URL = api.url.parse(URI.url) 
    obj.URLResponse = {}
    local protocol = "file"
    foreach( api.protocol, function(name, p)
      if obj.URL.protocol:match("^"..name) then 
        protocol = p
      end
    end)
    if protocol then
      if obj.URL.protocol == 'file' then 
        return obj.commit('onURI') 
      end
      local status, data, headers = protocol.request(URI.url)
      obj.URLResponse = {
-        ok          = (status ~= nil and status >= 200 and status < 300),
+        ok          = (status >= 200 and status < 300),
        status      = status,
        data        = data,
        headers     = headers 
      }
      api.ecs.add( api.world, obj )
      obj.commit('onURI')
    end
  end
--- a/xurfer/ext/kitchensink/main.lua
+++ b/xurfer/ext/kitchensink/main.lua
@ -4,7 +4,7 @@ local sample
 return {
  name = "kitchensink",
-  enabled = false, --(lovr ~= nil),
+  enabled = (lover ~= nil),
  init = function() 
    sample = require "sample"
--- a/xurfer/ext/startupscene/main.lua
+++ b/xurfer/ext/startupscene/main.lua
@ -1,10 +1,13 @@
 local api = ...
 local envTex
 local skybox
 local environmentMap
 local sphericalHarmonics
 local shader
 return {
  name = "startupscene",
-  enabled = (lovr ~= nil),
+  enabled = true,
  init = function() end,
@ -16,8 +19,8 @@ return {
  load = function()
    --if api.iui.idiom == "vr" then
-      envTex = api.graphics.newTexture("lovr/assets/img/env.png", {})
+      envTex = lovr.graphics.newTexture("lovr/assets/img/env.png", {})
-      api.world.skybox = api.graphics.newTexture({
+      skybox = lovr.graphics.newTexture({
        px = 'ext/startupscene/skybox/Dayright.jpg',  -- 'px.png',
        nx = 'ext/startupscene/skybox/Dayleft.jpg',   -- 'nx.png',
        py = 'ext/startupscene/skybox/Daytop.jpg',    -- 'py.png',
@ -25,9 +28,9 @@ return {
        pz = 'ext/startupscene/skybox/Dayfront.jpg',  -- 'pz.png',
        nz = 'ext/startupscene/skybox/Dayback.jpg'    -- 'nz.png'
      })
-      api.world.environmentMap = lovr.graphics.newTexture('ext/startupscene/skybox/ibl.ktx')
+      environmentMap = lovr.graphics.newTexture('ext/startupscene/skybox/ibl.ktx')
-      api.world.sphericalHarmonics = lovr.graphics.newBuffer({ 'vec3', layout = 'std140' }, {
+      sphericalHarmonics = lovr.graphics.newBuffer({ 'vec3', layout = 'std140' }, {
        {  0.611764907836914,  0.599504590034485,  0.479980736970901 },
        {  0.659514904022217,  0.665349841117859,  0.567680120468140 },
        {  0.451633930206299,  0.450751245021820,  0.355226665735245 },
@ -38,6 +41,36 @@ return {
        { -0.179465517401695, -0.181243389844894, -0.141314014792442 },
        { -0.144527092576027, -0.143508568406105, -0.122757166624069 }
      })
      shader = lovr.graphics.newShader([[
        vec4 lovrmain() {
          return DefaultPosition;
        }
      ]], [[
        uniform textureCube cubemap;
        uniform sphericalHarmonics { vec3 sh[9]; };
        vec4 lovrmain() {
          Surface surface;
          initSurface(surface);
          vec3 color = vec3(0);
          vec3 lightDirection = vec3(-1, -1, -1);
          vec4 lightColorAndBrightness = vec4(1, 1, 1, 3);
          float visibility = 1.;
          color += getLighting(surface, lightDirection, lightColorAndBrightness, visibility);
          color += getIndirectLighting(surface, cubemap, sh);
          return vec4(color, 1);
        }
      ]], {
        flags = {
          glow = true,
          normalMap = true,
          vertexTangents = false, -- DamagedHelmet doesn't have vertex tangents
          tonemap = true
        }
      })
    --end
  end,
  draw = function(pass)
@ -45,7 +78,7 @@ return {
        -- skybox
        pass:setCullMode('back')
        pass:setBlendMode()
-        pass:skybox(api.world.skybox)
+        pass:skybox(skybox)
        pass:setColor(1, 1, 1)
        pass:setMaterial(envTex)
@ -61,9 +94,9 @@ return {
        pass:setColor( 0, 0, 0, 0.75 )
        pass:plane(0, 0.01, 0, 500, 500, math.pi * 0.5, 1, 0, 0, "line", 100, 100)
-        pass:setShader( lovr.shader.pbr ) 
+        pass:setShader(shader)
-        pass:send('cubemap', api.world.environmentMap)
+        pass:send('cubemap', environmentMap)
-        pass:send('sphericalHarmonics', api.world.sphericalHarmonics)
+        pass:send('sphericalHarmonics', sphericalHarmonics)
    end
  end
--- a/xurfer/ext/tween/main.lua
+++ b/xurfer/ext/tween/main.lua
@ -1,33 +0,0 @@
 local api = ...
 return {
  enabled = false,
  init = function()
    local tweenUpdater = api.ecs.processingSystem({
      updatethread = true,
      filter = api.ecs.requireAll('tween'),
      nocache = true,
      process = function( self, obj, dt)
        print("JAAA")
        foreach( obj.tween, function(k,t)
          print("TWEENING!")
          if t:update(dt) == true then 
            obj.tween[k] = nil -- delete tween
            if count(obj.tween) == 0 then 
              obj.tween = nil 
              print("deleted tweens")
            end
          end
        end)
      end
    })
    api.ecs.addSystem( api.world, tweenUpdater )
  end
            ---- visualize click
            --onClick
            --obj.scale = 0.66 
            --obj.tween          = obj.tween or {}
            --obj.tween['scale'] = tween.new(0.5, obj, {scale = 1})
 }
--- a/xurfer/ext/tween/tween.lua
+++ b/xurfer/ext/tween/tween.lua
@ -1,367 +0,0 @@
 local tween = {
  _VERSION     = 'tween 2.1.1',
  _DESCRIPTION = 'tweening for lua',
  _URL         = 'https://github.com/kikito/tween.lua',
  _LICENSE     = [[
    MIT LICENSE
    Copyright (c) 2014 Enrique García Cota, Yuichi Tateno, Emmanuel Oga
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the
    "Software"), to deal in the Software without restriction, including
    without limitation the rights to use, copy, modify, merge, publish,
    distribute, sublicense, and/or sell copies of the Software, and to
    permit persons to whom the Software is furnished to do so, subject to
    the following conditions:
    The above copyright notice and this permission notice shall be included
    in all copies or substantial portions of the Software.
    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  ]]
 }
 -- easing
 -- Adapted from https://github.com/EmmanuelOga/easing. See LICENSE.txt for credits.
 -- For all easing functions:
 -- t = time == how much time has to pass for the tweening to complete
 -- b = begin == starting property value
 -- c = change == ending - beginning
 -- d = duration == running time. How much time has passed *right now*
 local pow, sin, cos, pi, sqrt, abs, asin = math.pow, math.sin, math.cos, math.pi, math.sqrt, math.abs, math.asin
 -- linear
 local function linear(t, b, c, d) return c * t / d + b end
 -- quad
 local function inQuad(t, b, c, d) return c * pow(t / d, 2) + b end
 local function outQuad(t, b, c, d)
  t = t / d
  return -c * t * (t - 2) + b
 end
 local function inOutQuad(t, b, c, d)
  t = t / d * 2
  if t < 1 then return c / 2 * pow(t, 2) + b end
  return -c / 2 * ((t - 1) * (t - 3) - 1) + b
 end
 local function outInQuad(t, b, c, d)
  if t < d / 2 then return outQuad(t * 2, b, c / 2, d) end
  return inQuad((t * 2) - d, b + c / 2, c / 2, d)
 end
 -- cubic
 local function inCubic (t, b, c, d) return c * pow(t / d, 3) + b end
 local function outCubic(t, b, c, d) return c * (pow(t / d - 1, 3) + 1) + b end
 local function inOutCubic(t, b, c, d)
  t = t / d * 2
  if t < 1 then return c / 2 * t * t * t + b end
  t = t - 2
  return c / 2 * (t * t * t + 2) + b
 end
 local function outInCubic(t, b, c, d)
  if t < d / 2 then return outCubic(t * 2, b, c / 2, d) end
  return inCubic((t * 2) - d, b + c / 2, c / 2, d)
 end
 -- quart
 local function inQuart(t, b, c, d) return c * pow(t / d, 4) + b end
 local function outQuart(t, b, c, d) return -c * (pow(t / d - 1, 4) - 1) + b end
 local function inOutQuart(t, b, c, d)
  t = t / d * 2
  if t < 1 then return c / 2 * pow(t, 4) + b end
  return -c / 2 * (pow(t - 2, 4) - 2) + b
 end
 local function outInQuart(t, b, c, d)
  if t < d / 2 then return outQuart(t * 2, b, c / 2, d) end
  return inQuart((t * 2) - d, b + c / 2, c / 2, d)
 end
 -- quint
 local function inQuint(t, b, c, d) return c * pow(t / d, 5) + b end
 local function outQuint(t, b, c, d) return c * (pow(t / d - 1, 5) + 1) + b end
 local function inOutQuint(t, b, c, d)
  t = t / d * 2
  if t < 1 then return c / 2 * pow(t, 5) + b end
  return c / 2 * (pow(t - 2, 5) + 2) + b
 end
 local function outInQuint(t, b, c, d)
  if t < d / 2 then return outQuint(t * 2, b, c / 2, d) end
  return inQuint((t * 2) - d, b + c / 2, c / 2, d)
 end
 -- sine
 local function inSine(t, b, c, d) return -c * cos(t / d * (pi / 2)) + c + b end
 local function outSine(t, b, c, d) return c * sin(t / d * (pi / 2)) + b end
 local function inOutSine(t, b, c, d) return -c / 2 * (cos(pi * t / d) - 1) + b end
 local function outInSine(t, b, c, d)
  if t < d / 2 then return outSine(t * 2, b, c / 2, d) end
  return inSine((t * 2) -d, b + c / 2, c / 2, d)
 end
 -- expo
 local function inExpo(t, b, c, d)
  if t == 0 then return b end
  return c * pow(2, 10 * (t / d - 1)) + b - c * 0.001
 end
 local function outExpo(t, b, c, d)
  if t == d then return b + c end
  return c * 1.001 * (-pow(2, -10 * t / d) + 1) + b
 end
 local function inOutExpo(t, b, c, d)
  if t == 0 then return b end
  if t == d then return b + c end
  t = t / d * 2
  if t < 1 then return c / 2 * pow(2, 10 * (t - 1)) + b - c * 0.0005 end
  return c / 2 * 1.0005 * (-pow(2, -10 * (t - 1)) + 2) + b
 end
 local function outInExpo(t, b, c, d)
  if t < d / 2 then return outExpo(t * 2, b, c / 2, d) end
  return inExpo((t * 2) - d, b + c / 2, c / 2, d)
 end
 -- circ
 local function inCirc(t, b, c, d) return(-c * (sqrt(1 - pow(t / d, 2)) - 1) + b) end
 local function outCirc(t, b, c, d)  return(c * sqrt(1 - pow(t / d - 1, 2)) + b) end
 local function inOutCirc(t, b, c, d)
  t = t / d * 2
  if t < 1 then return -c / 2 * (sqrt(1 - t * t) - 1) + b end
  t = t - 2
  return c / 2 * (sqrt(1 - t * t) + 1) + b
 end
 local function outInCirc(t, b, c, d)
  if t < d / 2 then return outCirc(t * 2, b, c / 2, d) end
  return inCirc((t * 2) - d, b + c / 2, c / 2, d)
 end
 -- elastic
 local function calculatePAS(p,a,c,d)
  p, a = p or d * 0.3, a or 0
  if a < abs(c) then return p, c, p / 4 end -- p, a, s
  return p, a, p / (2 * pi) * asin(c/a) -- p,a,s
 end
 local function inElastic(t, b, c, d, a, p)
  local s
  if t == 0 then return b end
  t = t / d
  if t == 1  then return b + c end
  p,a,s = calculatePAS(p,a,c,d)
  t = t - 1
  return -(a * pow(2, 10 * t) * sin((t * d - s) * (2 * pi) / p)) + b
 end
 local function outElastic(t, b, c, d, a, p)
  local s
  if t == 0 then return b end
  t = t / d
  if t == 1 then return b + c end
  p,a,s = calculatePAS(p,a,c,d)
  return a * pow(2, -10 * t) * sin((t * d - s) * (2 * pi) / p) + c + b
 end
 local function inOutElastic(t, b, c, d, a, p)
  local s
  if t == 0 then return b end
  t = t / d * 2
  if t == 2 then return b + c end
  p,a,s = calculatePAS(p,a,c,d)
  t = t - 1
  if t < 0 then return -0.5 * (a * pow(2, 10 * t) * sin((t * d - s) * (2 * pi) / p)) + b end
  return a * pow(2, -10 * t) * sin((t * d - s) * (2 * pi) / p ) * 0.5 + c + b
 end
 local function outInElastic(t, b, c, d, a, p)
  if t < d / 2 then return outElastic(t * 2, b, c / 2, d, a, p) end
  return inElastic((t * 2) - d, b + c / 2, c / 2, d, a, p)
 end
 -- back
 local function inBack(t, b, c, d, s)
  s = s or 1.70158
  t = t / d
  return c * t * t * ((s + 1) * t - s) + b
 end
 local function outBack(t, b, c, d, s)
  s = s or 1.70158
  t = t / d - 1
  return c * (t * t * ((s + 1) * t + s) + 1) + b
 end
 local function inOutBack(t, b, c, d, s)
  s = (s or 1.70158) * 1.525
  t = t / d * 2
  if t < 1 then return c / 2 * (t * t * ((s + 1) * t - s)) + b end
  t = t - 2
  return c / 2 * (t * t * ((s + 1) * t + s) + 2) + b
 end
 local function outInBack(t, b, c, d, s)
  if t < d / 2 then return outBack(t * 2, b, c / 2, d, s) end
  return inBack((t * 2) - d, b + c / 2, c / 2, d, s)
 end
 -- bounce
 local function outBounce(t, b, c, d)
  t = t / d
  if t < 1 / 2.75 then return c * (7.5625 * t * t) + b end
  if t < 2 / 2.75 then
    t = t - (1.5 / 2.75)
    return c * (7.5625 * t * t + 0.75) + b
  elseif t < 2.5 / 2.75 then
    t = t - (2.25 / 2.75)
    return c * (7.5625 * t * t + 0.9375) + b
  end
  t = t - (2.625 / 2.75)
  return c * (7.5625 * t * t + 0.984375) + b
 end
 local function inBounce(t, b, c, d) return c - outBounce(d - t, 0, c, d) + b end
 local function inOutBounce(t, b, c, d)
  if t < d / 2 then return inBounce(t * 2, 0, c, d) * 0.5 + b end
  return outBounce(t * 2 - d, 0, c, d) * 0.5 + c * .5 + b
 end
 local function outInBounce(t, b, c, d)
  if t < d / 2 then return outBounce(t * 2, b, c / 2, d) end
  return inBounce((t * 2) - d, b + c / 2, c / 2, d)
 end
 tween.easing = {
  linear    = linear,
  inQuad    = inQuad,    outQuad    = outQuad,    inOutQuad    = inOutQuad,    outInQuad    = outInQuad,
  inCubic   = inCubic,   outCubic   = outCubic,   inOutCubic   = inOutCubic,   outInCubic   = outInCubic,
  inQuart   = inQuart,   outQuart   = outQuart,   inOutQuart   = inOutQuart,   outInQuart   = outInQuart,
  inQuint   = inQuint,   outQuint   = outQuint,   inOutQuint   = inOutQuint,   outInQuint   = outInQuint,
  inSine    = inSine,    outSine    = outSine,    inOutSine    = inOutSine,    outInSine    = outInSine,
  inExpo    = inExpo,    outExpo    = outExpo,    inOutExpo    = inOutExpo,    outInExpo    = outInExpo,
  inCirc    = inCirc,    outCirc    = outCirc,    inOutCirc    = inOutCirc,    outInCirc    = outInCirc,
  inElastic = inElastic, outElastic = outElastic, inOutElastic = inOutElastic, outInElastic = outInElastic,
  inBack    = inBack,    outBack    = outBack,    inOutBack    = inOutBack,    outInBack    = outInBack,
  inBounce  = inBounce,  outBounce  = outBounce,  inOutBounce  = inOutBounce,  outInBounce  = outInBounce
 }
 -- private stuff
 local function copyTables(destination, keysTable, valuesTable)
  valuesTable = valuesTable or keysTable
  local mt = getmetatable(keysTable)
  if mt and getmetatable(destination) == nil then
    setmetatable(destination, mt)
  end
  for k,v in pairs(keysTable) do
    if type(v) == 'table' then
      destination[k] = copyTables({}, v, valuesTable[k])
    else
      destination[k] = valuesTable[k]
    end
  end
  return destination
 end
 local function checkSubjectAndTargetRecursively(subject, target, path)
  path = path or {}
  local targetType, newPath
  for k,targetValue in pairs(target) do
    targetType, newPath = type(targetValue), copyTables({}, path)
    table.insert(newPath, tostring(k))
    if targetType == 'number' then
      assert(type(subject[k]) == 'number', "Parameter '" .. table.concat(newPath,'/') .. "' is missing from subject or isn't a number")
    elseif targetType == 'table' then
      checkSubjectAndTargetRecursively(subject[k], targetValue, newPath)
    else
      assert(targetType == 'number', "Parameter '" .. table.concat(newPath,'/') .. "' must be a number or table of numbers")
    end
  end
 end
 local function checkNewParams(duration, subject, target, easing)
  assert(type(duration) == 'number' and duration > 0, "duration must be a positive number. Was " .. tostring(duration))
  local tsubject = type(subject)
  assert(tsubject == 'table' or tsubject == 'userdata', "subject must be a table or userdata. Was " .. tostring(subject))
  assert(type(target)== 'table', "target must be a table. Was " .. tostring(target))
  assert(type(easing)=='function', "easing must be a function. Was " .. tostring(easing))
  checkSubjectAndTargetRecursively(subject, target)
 end
 local function getEasingFunction(easing)
  easing = easing or "linear"
  if type(easing) == 'string' then
    local name = easing
    easing = tween.easing[name]
    if type(easing) ~= 'function' then
      error("The easing function name '" .. name .. "' is invalid")
    end
  end
  return easing
 end
 local function performEasingOnSubject(subject, target, initial, clock, duration, easing)
  local t,b,c,d
  for k,v in pairs(target) do
    if type(v) == 'table' then
      performEasingOnSubject(subject[k], v, initial[k], clock, duration, easing)
    else
      t,b,c,d = clock, initial[k], v - initial[k], duration
      subject[k] = easing(t,b,c,d)
    end
  end
 end
 -- Tween methods
 local Tween = {}
 local Tween_mt = {__index = Tween}
 function Tween:set(clock)
  assert(type(clock) == 'number', "clock must be a positive number or 0")
  self.initial = self.initial or copyTables({}, self.target, self.subject)
  self.clock = clock
  if self.clock <= 0 then
    self.clock = 0
    copyTables(self.subject, self.initial)
  elseif self.clock >= self.duration then -- the tween has expired
    self.clock = self.duration
    copyTables(self.subject, self.target)
  else
    performEasingOnSubject(self.subject, self.target, self.initial, self.clock, self.duration, self.easing)
  end
  return self.clock >= self.duration
 end
 function Tween:reset()
  return self:set(0)
 end
 function Tween:update(dt)
  assert(type(dt) == 'number', "dt must be a number")
  return self:set(self.clock + dt)
 end
 -- Public interface
 function tween.new(duration, subject, target, easing)
  easing = getEasingFunction(easing)
  checkNewParams(duration, subject, target, easing)
  return setmetatable({
    duration  = duration,
    subject   = subject,
    target    = target,
    easing    = easing,
    clock     = 0
  }, Tween_mt)
 end
 return tween
--- a/xurfer/ext/xrfragments/level2.lua
+++ b/xurfer/ext/xrfragments/level2.lua
@ -1,16 +0,0 @@
 local api   = ...
 local xrf   = require("ext/xrfragments/lovr-xrf")
 local url   = require("url")
 return {
  load = function( href, obj, refererURL, cb )
    if xrf.isExternalHref( href ) and not xrf.isImport( href ) then
      if type(refererURL) ~= 'table' then refererURL = url.parse(refererURL) end
      local URL = url.getAbsolute( href, refererURL.string )
      cb( URL.string, obj)
      return true
    end
    return false
  end
 }
--- a/xurfer/ext/xrfragments/level4.lua
+++ b/xurfer/ext/xrfragments/level4.lua
@ -1,15 +0,0 @@
 local xrf   = require("ext/xrfragments/lovr-xrf")
 local url   = require("url")
 return {
  import = function( href, obj, refererURL, cb ) -- imports object
    if xrf.isImport( href ) then
      if type(refererURL) ~= 'table' then refererURL = url.parse(refererURL) end
      local URL = url.getAbsolute( href, refererURL )
      cb( URL.string, obj )
      return true
    end
    return false
  end
 }
--- a/xurfer/ext/xrfragments/lovr-xrf.lua
+++ b/xurfer/ext/xrfragments/lovr-xrf.lua
@ -25,7 +25,6 @@
 -- or implied, of  
 local json = require("json") 
 local url  = require("url")
 local xrf  = {}
 xrf.traverseNodesContaining = function(key,obj,cb)
@ -37,17 +36,14 @@ xrf.traverseNodesContaining = function(key,obj,cb)
  for k, tkey in pairs(keys) do 
    local i = 1
    local tree = metadata[tkey]
    local foundhrefs = false
    xrf.traverse( tree, function(node)
      if node['extras'] ~= nil then 
        if node['extras'][key] ~= nil then
          foundhrefs = true
          cb(node,obj, i, metadata)
        end
      end
      i = i + 1
    end)
    if foundhrefs then break end -- blender puts duplicate (undo?) data in 'meshes' sometimes?
  end
 end
@ -90,6 +86,7 @@ xrf.makeClickable = function( physicsWorld, cb)
    local model     = obj['model']
    local node      = node_or_mesh
    if node['mesh'] == nil then node = xrf.getNodeFromMesh(node_or_mesh, metadata, i) end
    print("making node " .. node['name'] .. " clickable")
    local meshindex = 1 + node['mesh']
    local mesh      = model:getMesh( meshindex )
    local minx, maxx, miny, maxy, minz, maxz = mesh:getBoundingBox()
@ -106,7 +103,6 @@ xrf.makeClickable = function( physicsWorld, cb)
      scale[2] * (h + 0.01), -- in case of 
      scale[3] * (d + 0.01)  -- planes e.g.
    )
    print("making node " .. node['name'] .. " clickable: " .. node.extras.href )
    collider:setUserData( {name = node['name'], node = node, onclick = cb })
  end 
 end
@ -126,18 +122,4 @@ xrf.traverse = function(arr, cb, key)
  end
 end
 xrf.isImport = function(href)
  local URL    = href 
  if type(URL) ~= 'table' then URL = url.parse(href) end
  return URL.string:find("#!")
 end
 xrf.isExternalHref = function(href)
  local URL    = href 
  if type(URL) ~= 'table' then URL = url.parse(href) end
  return (URL.protocol == 'file') and 
         (URL.string:sub(1,1) ~= '#') and 
         not xrf.isImport(URL)
 end
 return xrf
--- a/xurfer/ext/xrfragments/main.lua
+++ b/xurfer/ext/xrfragments/main.lua
@ -1,12 +1,9 @@
 local api = ...
 local url   = require('url')
 local tween = require('tween') 
 local ecs   = api.ecs
 local xrf = require("ext/xrfragments/lovr-xrf")
-xrf.level2  = api.util.addModuleHooks( require("ext/xrfragments/level2") )
+local xrfsystem
 xrf.level4  = api.util.addModuleHooks( require("ext/xrfragments/level4") )
-xrfimpl = {
+return {
  enabled = true,
  init = function() end,
@ -16,41 +13,12 @@ xrfimpl = {
      xrf.traverseNodesContaining('href', obj, 
        xrf.makeClickable( api.ecs.worldPhysics, 
          function(obj, collider)
-            local href = obj.node.extras.href
+            print("\nhref was clicked: " .. obj.node.extras.href)
-            trace("\n[xrf] href was clicked: " .. href)
+            print_r(obj)
            local ok =  xrf.level2.load( href, obj, api.ext.URI.current, xrfimpl.onLoad)
                        or
                        xrf.level4.import( href, obj, api.ext.URI.current, xrfimpl.onImport)
          end
        )
      )
    end
  end,
  onAudioFile = function(obj)
    -- see https://xrfragment.org/#%F0%9F%93%9C%20level3%3A%20Media%20Fragments
    if obj.audio ~= nil and obj.URL.fragment.t ~= nil then
      trace("[xrf.level3] seeking to " .. obj.URL.fragment.t .. " seconds in audio")
      obj.audio:seek( tonumber(obj.URL.fragment.t) ) 
      obj.audio:setLooping( obj.URL.fragment.loop or false ) 
    end
  end,
  onLoad = function(absoluteHref,obj)
    trace("[xrf.level2] explicit (external) href hyperlink found")
    api.ecs.clear()
    api.ecs.add( api.world, { 
      URI = { url = absoluteHref, method = 'GET', target = '_top' }  
    })
  end,
  onImport = function(absoluteHref,obj)
    trace("[xrf.level4] ! (import) operator found")
    api.ecs.add( api.world, { URI = { url = absoluteHref, method = 'GET', target = obj }  })
  end
 }
 return xrfimpl
--- a/xurfer/ext/xrfragments/url.lua
+++ b/xurfer/ext/xrfragments/url.lua
@ -57,9 +57,7 @@ local function parseArgs(fragment)
    for _, item in ipairs(items) do
        local key_value = split(item, "=")
        if #key_value > 1 then
-            local k = key_value[1]
+            ARG[key_value[1]] = guess_type(key_value[2])
            ARG[k]                   = guess_type(key_value[2]) -- xr fragment operators preserved
            ARG[k:gsub("[^%w]","") ] = guess_type(key_value[2]) -- alphanumeric only
        elseif #key_value == 1 then
            ARG[key_value[1]] = ""
        end
@ -69,7 +67,6 @@ end
 -- Main URL Parser function attached to the module object
 function url.parse(url_string)
    if type(url_string) == 'table' then return url_string end -- already parsed
    -- Setup initial URI table structure
    local URI = {
        domain = "",
@ -89,8 +86,6 @@ function url.parse(url_string)
    if protocol then
        URI.protocol = protocol:gsub("://", "")
        remaining = remaining:sub(#protocol + 1)
    else
      URI.protocol = "file"
    end
    local hash = string.match(remaining, "(#.*)$") -- fragment
    if hash then
@ -145,17 +140,5 @@ function url.parse(url_string)
    return URI
 end
 url.getAbsolute = function(href,referer)
  local URL    = url.parse(href)
  local URLref = url.parse(referer)
  if referer ~= nil and URL.protocol == 'file' and URLref.protocol ~= 'file' then 
    URL.protocol = URLref.protocol 
    URL.domain   = URLref.domain
    URL.string   = URLref.protocol .. '://' .. URLref.domain .. '/' .. URL.path .. URL.hash
    URL.URN      = URL.string:gsub("#.*", "")
  end
  return URL
 end
 -- Return the module table so it can be assigned via require()
 return url
--- a/xurfer/lib/tiny-ecs.lua
+++ b/xurfer/lib/tiny-ecs.lua
@ -656,10 +656,8 @@ function tiny_manageEntities(world)
                elseif index then
                    system.modified = true
                    local tmpEntity = ses[#ses]
                    if tmpEntity ~= nil then
                    ses[index] = tmpEntity
                    seis[tmpEntity] = index
                    end
                    seis[entity] = nil
                    ses[#ses] = nil
                    local onRemove = system.onRemove
--- a/xurfer/lovr/main.lua
+++ b/xurfer/lovr/main.lua
@ -22,6 +22,7 @@ ecs.filterUpdate = ecs.requireAll('updatethread')
 -- ecs systems
 local interactionsUpdater
 local renderer
 --- @type Texture
 local envTex
@ -119,7 +120,7 @@ end
 if launch.mode == "desktop" then
    function lovr.mousemoved(x, y, dx, dy)
        backend.mousemoved(x, y, dx, dy)
-        interactionsUpdater.mouse.moved = {x=x, y=y}
+        interactionsUpdater.mouse.moved = {x=x, y=y, button=button}
    end
    function lovr.mousepressed(x, y, button)
@ -145,7 +146,7 @@ if launch.mode == "desktop" then
    function lovr.keyreleased(key, scancode)
        backend.keyreleased(key, scancode)
-        interactionsUpdater.key.released = {key=key,scancode=scancode}
+        interactionsUpdater.key.released = {key=key,scancode=scancode,isRepeat=isRepeat}
    end
    function lovr.textinput(text)
@ -154,6 +155,27 @@ if launch.mode == "desktop" then
    end
 end
 local initECS = function(ecs)
  -- lovr.draw => ecs.draw (render-logic thread)
  renderer = ecs.processingSystem()
  renderer.filter        = ecs.requireAll('model') 
  renderer.drawthread = true
  function renderer:process(obj, pass)
    if obj.model ~= nil and obj.root ~= nil then 
      pass:setMaterial()
      pass:setCullMode('none')
      pass:draw(
        obj['model'], 
        obj['x'], 
        obj['y'],
        obj['z'], 
        1, 0, 1, 0, 0, 1)
    end
  end
  ecs.addSystem( api.world, renderer )
 end
 function initInteractions(ecs)
  ecs.worldPhysics = lovr.physics.newWorld(0, 0, 0)
@ -176,7 +198,6 @@ function initInteractions(ecs)
    local collider, shape, x, y, z = ecs.worldPhysics:raycast(ox, oy, oz, ox + dx, oy + dy, oz + dz)
    if collider then
      for i, hand in ipairs(lovr.headset.getHands()) do
      if lovr.headset.isDown(hand, 'trigger') then
        print("buttondown")
      end
@ -187,7 +208,6 @@ function initInteractions(ecs)
        if node.onclick ~= nil then node.onclick(node,collider) end
      end
    end
    end
    -- reset stuff
    interactionsUpdater.clear( interactionsUpdater.mouse )
    interactionsUpdater.clear( interactionsUpdater.key )
@ -196,21 +216,5 @@ function initInteractions(ecs)
  ecs.addSystem( api.world, interactionsUpdater )
 end
-function initCleanups(ecs)
+initECS(api.ecs)
  local navigateListener = ecs.processingSystem({
    updatethread = true,
    filter = ecs.requireAll('URI', ecs.rejectAll('URLResponse') ),
    onAdd = function(self,obj)
      -- clear colliders if needed
      if obj.URI.target ~= nil and obj.URI.target == '_top' then
        ecs.worldPhysics:destroy()
        ecs.worldPhysics = lovr.physics.newWorld(0, 0, 0)
      end
    end
  })
  ecs.addSystem( api.world, navigateListener )
 end
 initInteractions(api.ecs)
 initCleanups(api.ecs)
 require("render/model").init(api)
--- a/xurfer/lovr/render/model.lua
+++ b/xurfer/lovr/render/model.lua
@ -1,75 +0,0 @@
 local api = ...
 local modelRenderer
 modelRenderer = { 
  -- lovr.draw => ecs.draw (render-logic thread)
  init = function(api)
    local ecs = api.ecs
    api.world.shader = { pbr = false }
    lovr.shader = lovr.shader or {}
    lovr.shader['pbr'] = modelRenderer.initShaderPBR()
    renderer = ecs.processingSystem()
    renderer.filter        = ecs.requireAll('model') 
    renderer.drawthread = true -- important
    function renderer:process(obj, pass)
      if obj.model ~= nil and obj.root ~= nil then 
        pass:setMaterial()
        pass:setBlendMode()
        pass:setFaceCull('none') -- supposed to be defined per-mesh in GLB
        pass:setCullMode('none')
        pass:setShader( lovr.shader.pbr )
        if api.world.environmentMap ~= nil then
          pass:send('cubemap', api.world.environmentMap)
        end
        if api.world.sphericalHarmonics ~= nil then
          pass:send('sphericalHarmonics', api.world.sphericalHarmonics)
        end
        pass:draw(
          obj['model'], 
          obj.x or 0, 
          obj.y or 0,
          obj.z or 0, 
          obj.scale or 1, 
          0, 1, 0, 0, 1)
      end
    end
    ecs.addSystem( api.world, renderer )
  end,
  initShaderPBR = function()
    return lovr.graphics.newShader([[
      vec4 lovrmain() {
          return DefaultPosition;
        }
      ]], [[
        uniform textureCube cubemap;
        uniform sphericalHarmonics { vec3 sh[9]; };
        vec4 lovrmain() {
          Surface surface;
          initSurface(surface);
          vec3 color = vec3(0);
          vec3 lightDirection = vec3(-1, -1, -1);
          vec4 lightColorAndBrightness = vec4(1, 1, 1, 3);
          float visibility = 1.;
          color += getLighting(surface, lightDirection, lightColorAndBrightness, visibility);
          color += getIndirectLighting(surface, cubemap, sh);
          return vec4(color, 1);
        }
      ]], {
        flags = {
          glow = true,
          normalMap = true,
          vertexTangents = false, -- DamagedHelmet doesn't have vertex tangents
          tonemap = true
        }
    })
  end
 }
 return modelRenderer
--- a/xurfer/main.lua
+++ b/xurfer/main.lua
@ -9,14 +9,6 @@
 -- ./lovr xurfer https://snips.sh/f/rHFLg-cewi?r=1' -- cube
 -- ./lovr xurfer https://snips.sh/f/_U5-XctEVE?r=1' -- cube, monkey, scene
 local runtime = nil
 if lovr ~= nil then 
  runtime = { path = "lovr", api = lovr }
 elseif love ~= nil then 
  runtime = { path = "love", api = love };  
 end 
 if runtime == nil then 
  package.path = package.path .. ';' .. 'xurfer/?.lua' 
  require('conf') 
@ -40,7 +32,13 @@ api = {
  }
 }
-api = util.merge( api, runtime.api ) -- overlay api onto lovr/love-compatible runtime api
+local runtime
 local runtimepath
 if lovr ~= nil then runtime = { path = "lovr", api = lovr }  end 
 if love ~= nil then runtime = { path = "love", api = love }  end 
 api = util.merge( api, runtime.api )
 require( runtime.path .. "/main")
@ -51,7 +49,9 @@ api.ext.exec('init')
 -- load urls passed on the cli
 foreach( arg, function(k,uri) 
-  if uri:find(".") and k ~= 0 and k ~= -1 then 
+  foreach( api.protocol, function(name, p)
    if uri:match("^"..name) then 
      api.ecs.add( api.world, { URI = { url = uri, method = 'GET', target = '_top' }  })
    end
  end)
 end)
--- a/xurfer/test.glb
+++ b/xurfer/test.glb
--- a/xurfer/util.lua
+++ b/xurfer/util.lua
@ -69,10 +69,6 @@ function util.dump(value, indent, seen)
  end
 end
 -- error on undefined variable access
 local function err(t,k,v) error("Accessed an undefined variable: " .. tostring(k)) end
 setmetatable(_G, { __index = err })
 function util.count(self)
  local i = 0
  if self == nil then return i end
@ -145,16 +141,6 @@ function when(k,v,cb)
  end
 end
 function trace(o)
  if os.getenv('DEBUG') then 
    if type(o) == 'table' then 
      print_r(o) 
    else
      print(o)
    end
  end
 end
 function util.merge(t1,t2)
  local t3 = {}
@ -194,23 +180,4 @@ util.commit = function(world, obj, api)
  end
 end
 util.addHooks = function(fn, cb )
  return function(...)
    fn = (fn:gsub("^%l", string.upper)) -- uppercase first char
    trace("api.ext.exec('before" .. fn .. "')")
    api.ext.exec( "before" .. fn, ... )
    local result = cb(...)
    trace("api.ext.exec('after" .. fn .. "')")
    api.ext.exec( "after" .. fn, ... )
    return result
  end
 end
 util.addModuleHooks = function(mod)
  foreach( mod, function(k,v)
    mod[k] = util.addHooks(k, v ) 
  end)
  return mod
 end
 return util