;(function(){
  function Channel(name){ this.name = name; this.handlers = []; }
  Channel.prototype.on = function(handler){ this.handlers.push(handler) };
  Channel.prototype.send = function(payload){ try{ localStorage.setItem('bls_session', JSON.stringify({name:this.name, payload:payload, t:Date.now()})) }catch(e){} };
  window.addEventListener('storage', function(e){ if(e.key!=='bls_session') return; try{ var data = JSON.parse(e.newValue||'{}'); if(!data) return; if(Channel._handlers){ var hs = Channel._handlers[data.name]||[]; for(var i=0;i<hs.length;i++){ hs[i](data.payload) } } }catch(e){} });
  Channel._handlers = {};
  Channel.prototype.on = function(handler){ if(!Channel._handlers[this.name]) Channel._handlers[this.name] = []; Channel._handlers[this.name].push(handler) };
  var defaultState = { shape:'circle', shapeColor:'#00ff88', bgColor:'#000000', direction:'lr', speed:250, speedMultiplier:1, size:28, yPercent:50, yOscillateEnabled:false, yOscillateRate:0.5, glowEnabled:false, glowIntensity:1, glowRate:0.5, rampEnabled:false, rampSeconds:10, easingMode:'linear', edgePauseMs:0, wiggleEnabled:false, wiggleAmplitude:0, audioMode:'programmatic', programPreset:'pink', syncPan:true, panRate:0.5, cueRate:1.2, volume:0.6, audioName:null, audioEnabled:false, running:false, paused:false, pausedMs:0, pausedAt:null, durationSec:600, startedAt:null, patientWidth:'full', toneFreq:440, toneDurationMs:70, adsrAttackMs:8, adsrDecayMs:80, adsrSustainLevel:0.3, adsrReleaseMs:10 };
  function loadState(){ try{ var s = JSON.parse(localStorage.getItem('bls_state')||'null'); if(!s) return Object.assign({}, defaultState); return Object.assign({}, defaultState, s) }catch(e){ return Object.assign({}, defaultState) } }
  function saveState(s){ try{ localStorage.setItem('bls_state', JSON.stringify(s)) }catch(e){} }
  function mergeState(prev, next){ var s = Object.assign({}, prev, next); saveState(s); return s }
  function presetKeys(){ return ['shape','shapeColor','bgColor','direction','speed','speedMultiplier','size','yPercent','glowEnabled','glowIntensity','glowRate','rampEnabled','rampSeconds','easingMode','edgePauseMs','wiggleEnabled','wiggleAmplitude','audioMode','programPreset','syncPan','panRate','cueRate','volume','audioName','audioEnabled','patientWidth','toneFreq','toneDurationMs','adsrAttackMs','adsrDecayMs','adsrSustainLevel','adsrReleaseMs'] }
  function sanitizePreset(s){ var out={}; var keys=presetKeys(); for(var i=0;i<keys.length;i++){ var k=keys[i]; if(Object.prototype.hasOwnProperty.call(s,k)) out[k]=s[k] } return out }
  function loadPresets(){ try{ var m = JSON.parse(localStorage.getItem('bls_presets')||'null'); return m&&typeof m==='object'? m : {} }catch(e){ return {} } }
  function savePresets(m){ try{ localStorage.setItem('bls_presets', JSON.stringify(m)) }catch(e){} }
 function Renderer(canvas){ var ctx = canvas.getContext('2d'); var state = loadState(); var pos=null; var dir={x:1,y:0}; var running=false; var onUpdate=null; var pauseMs=0; var wigglePhase=0; function setDir(){ if(state.direction==='lr'){dir.x=1;dir.y=0}else if(state.direction==='ud'){dir.x=0;dir.y=1}else if(state.direction==='diag_down'){dir.x=1;dir.y=1}else{dir.x=1;dir.y=-1} var len=Math.sqrt(dir.x*dir.x+dir.y*dir.y); dir.x/=len; dir.y/=len } function yFromPercent(h,r,p){ return Math.max(r, Math.min(h-r, r + (h-2*r) * (p/100))) } function ensurePos(){ var w=canvas.width,h=canvas.height,r=state.size; var defPct = (state.direction==='lr'?50:state.direction==='ud'?5:state.direction==='diag_down'?5:95); var pct = (state.yPercent===undefined || state.yPercent===null ? defPct : state.yPercent); if(!pos){ if(state.direction==='lr'){pos={x:r+2,y:yFromPercent(h,r,pct)}} else if(state.direction==='ud'){pos={x:w/2,y:yFromPercent(h,r,pct)}} else {pos={x:r+2,y:yFromPercent(h,r,pct)}} } else { pos.y = yFromPercent(h, r, pct) } pos.x=Math.max(r,Math.min(w-r,pos.x)); pos.y=Math.max(r,Math.min(h-r,pos.y)) } function clear(){ ctx.fillStyle=state.bgColor; ctx.fillRect(0,0,canvas.width,canvas.height) } function draw(){ var r=state.size; var x=pos.x,y=pos.y; var doGlow = !!state.glowEnabled; var gi = state.glowIntensity || 1; var t = Date.now()/1000; var freq = Math.max(0.05, state.glowRate||0.5); var a = 0.5 + 0.5*Math.sin(t*2*Math.PI*freq); var hue = (t*60*freq)%360; var wx=0, wy=0; if(state.wiggleEnabled && state.wiggleAmplitude>0){ wigglePhase += 0.04 + state.speed/4000; var s = Math.sin(wigglePhase); if(state.direction==='lr'){ wy = s * state.wiggleAmplitude } else if(state.direction==='ud'){ wx = s * state.wiggleAmplitude } else { wx = -dir.y * s * state.wiggleAmplitude; wy = dir.x * s * state.wiggleAmplitude } } if(doGlow){ ctx.save(); ctx.shadowBlur = r * gi * (0.7 + a); ctx.shadowColor = 'hsla('+hue+',100%,60%,0.9)' } ctx.fillStyle=state.shapeColor; if(state.shape==='circle'){ ctx.beginPath(); ctx.arc(x+wx,y+wy,r,0,Math.PI*2); ctx.closePath(); ctx.fill() } else if(state.shape==='square'){ ctx.fillRect(x-r+wx,y-r+wy,r*2,r*2) } else { var h2=r*1.6; ctx.beginPath(); ctx.moveTo(x+wx,y-h2/2+wy); ctx.lineTo(x-r+wx,y+h2/2+wy); ctx.lineTo(x+r+wx,y+h2/2+wy); ctx.closePath(); ctx.fill() } if(doGlow){ ctx.restore() } } function effectiveSpeed(w,h,r){ var base = state.speed; var ramp = 1; if(state.rampEnabled && state.startedAt && state.rampSeconds>0){ var dt = Math.max(0,(Date.now()-state.startedAt)/1000); var k = Math.min(1, dt/state.rampSeconds); ramp = 0.2 + 0.8*k } var s=1; if(state.easingMode==='ease'){ if(dir.x!==0){ var u = (pos.x - r)/(w - 2*r); s = 0.3 + 0.7*(0.5 - 0.5*Math.cos(2*Math.PI*Math.max(0,Math.min(1,u)))) } else { var v = (pos.y - r)/(h - 2*r); s = 0.3 + 0.7*(0.5 - 0.5*Math.cos(2*Math.PI*Math.max(0,Math.min(1,v)))) } } return base * ramp * s } function step(dt){ var w=canvas.width,h=canvas.height,r=state.size; if(pauseMs>0){ pauseMs = Math.max(0, pauseMs - dt*1000); return } var sp = effectiveSpeed(w,h,r); pos.x += dir.x * sp * dt; pos.y += dir.y * sp * dt; var hit=false; if(pos.x <= r){ pos.x = r; dir.x = Math.abs(dir.x); hit=true } if(pos.x >= w - r){ pos.x = w - r; dir.x = -Math.abs(dir.x); hit=true } if(pos.y <= r){ pos.y = r; dir.y = Math.abs(dir.y); hit=true } if(pos.y >= h - r){ pos.y = h - r; dir.y = -Math.abs(dir.y); hit=true } if(hit && state.edgePauseMs>0){ pauseMs = state.edgePauseMs } if(onUpdate){ onUpdate({x:pos.x,y:pos.y,w:w,h:h}) } } var last=0; function loop(t){ if(!running){ return } if(!last) last=t; var dt=(t-last)/1000; last=t; clear(); draw(); step(dt); requestAnimationFrame(loop) } function start(){ if(!running){ running=true; last=0; requestAnimationFrame(loop) } } function stop(){ running=false } function setState(next){ var n = next||{}; var prevDir = state.direction; var prevSize = state.size; var prevY = state.yPercent; var hadDir = Object.prototype.hasOwnProperty.call(n,'direction'); var hadSize = Object.prototype.hasOwnProperty.call(n,'size'); var hadY = Object.prototype.hasOwnProperty.call(n,'yPercent'); state=mergeState(state,n); if(hadDir && state.direction!==prevDir){ setDir() } if(hadSize && state.size!==prevSize){ ensurePos() } if(hadY){ var r=state.size; var defPct=(state.direction==='lr'?50:state.direction==='ud'?5:state.direction==='diag_down'?5:95); var pct=(state.yPercent===undefined||state.yPercent===null?defPct:state.yPercent); pos.y = yFromPercent(canvas.height, r, pct) } clear(); draw() } function resize(w,h){ if(typeof w==='number') canvas.width=w; if(typeof h==='number') canvas.height=h; ensurePos(); clear(); draw() } function setOnUpdate(fn){ onUpdate=fn } setDir(); ensurePos(); clear(); draw(); return { start:start, stop:stop, setState:setState, resize:resize, getState:function(){return state}, setOnUpdate:setOnUpdate } }
  window.bls = { createChannel:function(name){ return new Channel(name) }, defaultState:defaultState, loadState:loadState, saveState:saveState, mergeState:mergeState, Renderer:Renderer,
    listPresets:function(){ var m=loadPresets(); return Object.keys(m).sort() },
    savePreset:function(name, st){ if(!name) return; var m=loadPresets(); m[name]=sanitizePreset(st||loadState()); savePresets(m) },
    loadPreset:function(name){ var m=loadPresets(); return m[name]||null },
    deletePreset:function(name){ var m=loadPresets(); if(m[name]){ delete m[name]; savePresets(m) } },
    exportPresets:function(){ return JSON.stringify(loadPresets(), null, 2) },
    importPresets:function(json){ try{ var data = typeof json==='string'? JSON.parse(json): json; if(!data||typeof data!=='object') return; var m=loadPresets(); for(var k in data){ if(Object.prototype.hasOwnProperty.call(data,k)) m[k]=sanitizePreset(data[k]) } savePresets(m) }catch(e){} }
  }
  window.BLS = window.bls
})();