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1 files changed, 91 insertions, 5 deletions

diff --git a/client/index.js b/client/index.js
index a4d5558..82be8e0 100644
--- a/client/index.js
+++ b/client/index.js
@@ -6,16 +6,12 @@ import organ from './lib/organ'
 import { browser, requestAudioContext } from './lib/util'
 
 let instrument = kalimba
-let hash = window.location.hash || window.location.search
-if (hash.match('sin') || hash.match('organ')) {
-  instrument = organ
-}
 
 const root = 440
 const s = 50
 const w = window.innerWidth
 const h = window.innerHeight
-const ws = w/s, hs = h/s
+const ws = Math.ceil(w/s), hs = Math.ceil(h/s)
 
 const add_on = 0
 const mul_on = 1.0
@@ -59,6 +55,66 @@ function assign(freq, state) {
 function toggle(freq) {
   assign(freq, freq.playing = !freq.playing)
 }
+function glider() {
+  const x = Math.floor(Math.random() * ws)
+  const y = Math.floor(Math.random() * hs)
+  console.log("glider at", x, y)
+  const gliderShape = [
+    [0,0,0,0,0],
+    [0,1,1,1,0],
+    [0,0,0,1,0],
+    [0,0,1,0,0],
+    [0,0,0,0,0],
+  ]
+  weave(x,y,gliderShape)
+}
+function weave (x,y,shape) {
+  const xmag = shape.length
+  const ymag = shape[0].length
+  let i, j, px, py
+  for (i = 0; i < xmag; i++) {
+    for (j = 0; j < ymag; j++) {
+      px = (x+i) % ws
+      py = (y+j) % hs
+      assign(notes[px][py], shape[i][j])
+    }
+  }
+}
+function forEach(f){
+  let i, j, note, s;
+  for (i = 0; i < ws; i++) {
+    for (j = 0; j < hs; j++) {
+      note = notes[i][j]
+      s = f(i,j,note.playing)
+      assign(note, s)
+    }
+  }
+}
+function clear(){
+  forEach((x,y,state) => {
+    return false
+  })
+}
+function white(){
+  forEach((x,y,state) => {
+    return false
+  })
+}
+function stripex(){
+  forEach((x,y,state) => {
+    return x % 2
+  })
+}
+function stripey(){
+  forEach((x,y,state) => {
+    return y % 2
+  })
+}
+function noise(){
+  forEach((x,y,state) => {
+    return Math.random() < 0.5
+  })
+}
 
 function add (i, j) {
   const a = i + 1
@@ -153,6 +209,7 @@ let life_bpm = 50
 window.addEventListener("keydown", keydown, true)
 function keydown(e){
   // console.log(e.keyCode)
+  if (e.altKey || e.ctrlKey || e.metaKey) return
   switch (e.keyCode){
     case 32: // space
       life.toggle()
@@ -166,9 +223,27 @@ function keydown(e){
       life_bpm = Math.max(1, life_bpm)
       life.setTempo(life_bpm)
       break
+    case 71: // g
+      glider()
+      break
     case 83: // s
       swap_instrument()
       break
+    case 67: // c
+      clear()
+      break
+    case 87: // w
+      white()
+      break
+    case 78: // n
+      noise()
+      break
+    case 69: // e
+      stripex()
+      break
+    case 82: // r
+      stripey()
+      break
   }
 }
 keys.listen(function(index){
@@ -177,3 +252,14 @@ keys.listen(function(index){
   // instrument.toggle(freq)
 })
 
+let hash = window.location.hash || window.location.search
+if (hash.match('sin') || hash.match('organ')) {
+  instrument = organ
+}
+if (hash.match('glider')) {
+  instrument = organ
+  clear()
+  glider()
+  life.setTempo(life_bpm = 120 * 8)
+  life.toggle()
+}