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cpu004.html
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<script src="https://dglittle.github.io/cdn/cpu004.js"></script>
<body style="margin:0px"></body>
<script>
var PALETTE_HEIGHT = 20
var LOOP_INTERVAL = 20 // 20
var view = {
x : -22,
y : 32,
scale : 2,
brush : 'wire',
play : true,
prev_x : 0,
prev_y : 0,
box : null
}
var version = 0
var model = cpu004 // { x: , y: , t: , c: , v: } (t=type, c=charge, v=version)
var stuff_sizes = {
'wire' : 1,
'cross_gate' : 1,
'and_gate' : 3,
'or_gate' : 3,
'nand_gate' : 3,
'toggle' : 3
}
var wave_front = {}
function update_model(changes) {
each(changes, function (_, key) {
if (_) {
model[key] = _
} else {
delete model[key]
}
})
wave_front = model
version = 0
each(model, function (_) {
if (_.v > version) version = _.v
})
render_prep()
render()
}
function set_new_model(new_model) {
var changes = {}
each(model, function (_, key) {
changes[key] = null
})
each(new_model, function (_, key) {
changes[key] = _
})
update_model(changes, dontUpdateFirebase)
}
function copy_view_box() {
var ret = {}
for (var y = view.box[1]; y <= view.box[3]; y++) {
for (var x = view.box[0]; x <= view.box[2]; x++) {
var key = x + ',' + y
var _ = model[key]
if (_) ret[key] = _
}
}
return ret
}
function delete_view_box(changes) {
var the_dead = copy_view_box()
each(the_dead, function (_, key) {
changes[key] = null
})
return the_dead
}
function get_thing_at(x, y) {
for (var dx = 0; dx >= -2; dx--) {
for (var dy = 0; dy >= -2; dy--) {
var thing = model[(x + dx) + ',' + (y + dy)]
if (thing && (-dx) < stuff_sizes[thing.t] && (-dy) < stuff_sizes[thing.t]) {
return thing
}
}
}
}
function draw_palette() {
var d = document.createElement('div')
d.style.width = '100%'
d.style.height = PALETTE_HEIGHT*2 + 'px'
key_capture_box = document.createElement('textarea')
key_capture_box.style.width = '20px'
key_capture_box.style.height = '19px'
key_capture_box.style.marginBottom = '-5px'
key_capture_box.addEventListener('keydown', function (e) {
if (view.brush == 'box' && e.keyCode == 8 && view.box && view.box.length == 4) {
// 8 = DELETE
var changes = {}
delete_view_box(changes)
update_model(changes)
} else if (view.brush == 'box' && e.keyCode == 72 && view.box && view.box.length == 4) {
// 72 = h
var changes = {}
var the_dead = delete_view_box(changes)
each(the_dead, function (_) {
var x = view.box[0] + (view.box[2] - view.box[0]) - (_.x - view.box[0]) - (stuff_sizes[_.t] - 1)
var Y = _.y
changes[X + ',' + Y] = {
x : X,
y : Y,
t : _.t,
c : _.c,
v : _.v
}
})
update_model(changes)
} else if (view.brush == 'box' && e.keyCode == 86 && view.box && view.box.length == 4) {
// 86 = v
var changes = {}
var the_dead = delete_view_box(changes)
each(the_dead, function (_) {
var x = _.x
var Y = view.box[1] + (view.box[3] - view.box[1]) - (_.y - view.box[1]) - (stuff_sizes[_.t] - 1)
changes[X + ',' + Y] = {
x : X,
y : Y,
t : _.t,
c : _.c,
v : _.v
}
})
update_model(changes)
} else if (view.brush == 'box' && e.keyCode == 70 && view.box && view.box.length == 4) {
// 70 = f
var changes = {}
var the_dead = delete_view_box(changes)
each(the_dead, function (_) {
var X = _.y - view.box[1] + view.box[0]
var Y = _.x - view.box[0] + view.box[1]
changes[X + ',' + Y] = {
x : X,
y : Y,
t : _.t,
c : _.c,
v : _.v
}
})
view.box = [view.box[0], view.box[1], view.box[3] - view.box[1] + view.box[0], view.box[2] - view.box[0] + view.box[1]]
update_model(changes)
}
})
d.append(key_capture_box)
function create_button(text, onclick) {
var b = document.createElement('button')
b.style.width = PALETTE_HEIGHT*2 + 'px'
b.style.height = PALETTE_HEIGHT + 'px'
b.textContent = text
b.onclick = onclick
d.append(b)
return b
}
create_button('+', function () {
view.scale *= 2
zoom_thing.value = view.scale
render()
})
function create_zoom_thing() {
var b = document.createElement('input')
b.style.width = 30 + 'px'
b.value = view.scale
b.oninput = function () {
view.scale = 1*b.value
render()
}
d.append(b)
return b
}
var zoom_thing = create_zoom_thing()
create_button('-', function () {
view.scale = Math.floor(view.scale/2)
zoom_thing.value = view.scale
render()
})
function create_location_viewer() {
var b = document.createElement('input')
b.style.width = 50 + 'px'
b.value = 'x,y'
d.append(b)
return b
}
location_viewer = create_location_viewer()
create_button('stop', function () {
view.play = !view.play
this.textContent = view.play ? 'stop' : 'play'
render()
})
create_button('set', function () {
var j = prompt('give me some JSON:')
if (j) j = JSON.parse(j)
if (j) set_new_model(j)
})
create_button('get', function () {
key_capture_box.value = JSON.stringify(model)
key_capture_box.focus()
key_capture_box.setSelectionRange(0, key_capture_box.value.length)
})
create_button('reset', function () {
var changes = {}
each(model, function (_, key) {
changes[key] = {
x : _.x,
y : _.y,
t : _.t,
c : -1,
v : 0
}
})
update_model(changes, true)
})
create_button('shock', function () {
var s = prompt('give me some jsOn!?!:')
if (s) {
view.shocker = JSON.parse(s)
view.shocks = (view.shocks || 0) + 50
}
})
// radio buttons
var radio_buttons = []
function create_radio_button(text, brush, cb) {
var b = create_button(text, function () {
view.brush = brush
if (cb) cb()
each(radio_buttons, function (x) { x.style.background = 'grey' })
this.style.background = 'gold'
})
radio_buttons.push(b)
b.onclick()
}
create_radio_button('WIRE', 'wire')
create_radio_button('CROSS', 'cross_gate')
create_radio_button('OR', 'or_gate')
create_radio_button('AND', 'and_gate')
create_radio_button('NAND', 'nand_gate')
create_radio_button('TOGGLE', 'toggle')
create_radio_button('delete', 'delete')
create_radio_button('box', 'box', function () {
key_capture_box.focus()
})
return d
}
document.body.append(draw_palette())
var c = document.createElement('canvas')
c.width = window.innerWidth
c.height = window.innerHeight - PALETTE_HEIGHT*2
var g = c.getContext('2d')
document.body.append(c)
function get_adjacent(x, y) {
return [
[x, y - 1, x, y - 2],
[x + 1, y, x + 2, y],
[x, y + 1, x, y + 2],
[x - 1, y, x - 2, y]
]
}
function propagate() {
version++
var changes = {}
var new_wave_front = {}
each(wave_front, function (_, key) {
_ = get_thing_at(_.x, _.y)
if (!_) { return }
key = _.x + ',' + _.y
if (_.t == 'wire') {
var best_v = _.v
var best_c = _.c
var adj = get_adjacent(_.x, _.y)
each(adj, function (a, i) {
var __ = get_thing_at(a[0], a[1])
if (__ && __.t == 'cross_gate') {
__ = model[a[2] + ',' + a[3]]
if (__ && __.t == 'wire' && __.v > best_v) {
best_v = __.v
best_c = __.c
}
} else if (__ && (__.t == 'wire' || (_.x == __.x + 1 || _.y == __.y + 1)) && __.v > best_v) {
best_v = __.v
best_c = __.c
}
})
if (best_v != _.v) {
changes[key] = {
c : best_c,
v : best_v
}
each(adj, function (__) {
new_wave_front[__[0] + ',' + __[1]] = {
x : __[0],
y : __[1]
}
})
}
} else if (_.t == 'cross_gate') {
_.c = -1
each(get_adjacent(_.x, _.y), function (__) {
var w = model[__[0] + ',' + __[1]]
if (w && w.t == 'wire') {
if (w.c > 0) _.c = 1
new_wave_front[__[0] + ',' + __[1]] = {
x : __[0],
y : __[1]
}
}
})
} else if (stuff_sizes[_.t] == 3) {
var high_count = 0
var low_count = 0
each([
model[(_.x + 0) + ',' + (_.y - 1)],
model[(_.x + 2) + ',' + (_.y - 1)],
model[(_.x + 3) + ',' + (_.y + 0)],
model[(_.x + 3) + ',' + (_.y + 2)],
model[(_.x + 0) + ',' + (_.y + 3)],
model[(_.x + 2) + ',' + (_.y + 3)],
model[(_.x - 1) + ',' + (_.y + 0)],
model[(_.x - 1) + ',' + (_.y + 2)]
], function (__) {
if (__ && __.t == 'wire') {
if (__.c > 0) high_count++
else low_count++
}
})
var output = -1
if (_.t == 'or_gate' && high_count > 0)
output = 1
if (_.t == 'and_gate' && low_count == 0)
output = 1
if (_.t == 'nand_gate' && low_count != 0)
output = 1
if (_.t == 'toggle')
output = _.cc
if (output != _.c) {
changes[key] = {
c : output,
v : version
}
each([
[_.x + 1, _.y - 1],
[_.x + 3, _.y + 1],
[_.x + 1, _.y + 3],
[_.x - 1, _.y + 1]
], function (pos) {
var w = model[pos[0] + ',' + pos[1]]
if (w && w.t == 'wire') {
new_wave_front[pos[0] + ',' + pos[1]] = {
x : pos[0],
y : pos[1]
}
}
})
}
}
})
if (view.shocks) {
view.shocks--
each(view.shocker, function (charge, key) {
var _ = model[key]
if (_) {
changes[key] = {
c : charge,
v : version
}
var comma = key.indexOf(',')
var x = 1*key.slice(0, comma)
var y = 1*key.slice(comma + 1)
each(get_adjacent(x, y), function (__) {
new_wave_front[__[0] + ',' + __[1]] = {
x : __[0],
y : __[1]
}
})
}
})
}
each(changes, function (_, key) {
model[key].c = _.c
model[key].v = _.v
draw_thing(model[key])
})
wave_front = new_wave_front
}
var render_prep_image_data = null
var render_prep_canvas = null
function set_pixel(x, y, color) {
if (render_prep_image_data) {
var base = (y - view.low_y) * render_prep_image_data.width * 4 + (x - view.low_x) * 4
render_prep_image_data.data[base + 0] = color[0]
render_prep_image_data.data[base + 1] = color[1]
render_prep_image_data.data[base + 2] = color[2]
render_prep_image_data.data[base + 3] = 255
}
}
function draw_thing(_) {
if (_.t == 'wire') {
set_pixel(_.x, _.y, _.c > 0 ? [255, 255, 0] : [80, 80, 0])
} else if (_.t == 'cross_gate') {
set_pixel(_.x, _.y, [0, 0, 0])
} else {
var fac = _.c > 0 ? 1 : 0.5
var color =
(_.t == 'or_gate') ? [fac * 255, fac * 128, 0] :
(_.t == 'and_gate') ? [0, 0, fac * 255] :
(_.t == 'nand_gate') ? [fac * 255, 0, fac * 255] :
(_.t == 'toggle') ? [0, fac * 255, fac * 255] :
[255, 0, 0]
for (var yy = 0; yy < 3; yy++) {
for (var xx = 0; xx < 3; xx++) {
set_pixel(_.x + xx, _.y + yy, color)
}
}
}
}
function render_prep() {
var x1 = Infinity
var y1 = Infinity
var x2 = -Infinity
var y2 = -Infinity
each(model, function (_) {
if (_.x < x1) x1 = _.x
if (_.y < y1) y1 = _.y
if (_.x + (stuff_sizes[_.t] - 1) > x2) x2 = _.x + (stuff_sizes[_.t] - 1)
if (_.y + (stuff_sizes[_.t] - 1) > y2) y2 = _.y + (stuff_sizes[_.t] - 1)
})
if (x1 == Infinity) {
x1 = 0
y1 = 0
x2 = 0
y2 = 0
}
var width = x2 - x1 + 1
var height = y2 - y1 + 1
view.low_x = x1
view.low_y = y1
view.used_width = width
view.used_height = height
render_prep_image_data = g.createImageData(width, height)
each(model, function (_, key) {
draw_thing(_)
})
render_prep_canvas = document.createElement('canvas')
render_prep_canvas.width = width
render_prep_canvas.height = height
}
function render() {
g.setTransform(1, 0, 0, 1, 0, 0)
g.fillStyle = 'rgba(0, 32, 0, 1)'
g.fillRect(0, 0, c.width, c.height)
g.setTransform(view.scale, 0, 0, view.scale,
Math.floor(c.width/2) - view.x*view.scale,
Math.floor(c.height/2) - view.y*view.scale)
var x_tiles = c.width / view.scale + 1
var y_tiles = c.height / view.scale + 1
var x_first_tile = Math.floor(view.x - c.width/2/view.scale)
var y_first_tile = Math.floor(view.y - c.height/2/view.scale)
// g.beginPath()
// for (var y = y_first_tile; y < y_first_tile + y_tiles; y++) {
// g.moveTo(x_first_tile, y + 0.5/view.scale)
// g.lineTo(x_first_tile + x_tiles, y + 0.5/view.scale)
// }
// for (var x = x_first_tile; x < x_first_tile + x_tiles; x++) {
// g.moveTo(x + 0.5/view.scale, y_first_tile)
// g.lineTo(x + 0.5/view.scale, y_first_tile + y_tiles)
// }
// g.strokeStyle = 'black'
// g.lineWidth = 1/view.scale
// g.stroke()
if (render_prep_canvas) {
render_prep_canvas.getContext('2d').putImageData(render_prep_image_data, 0, 0)
g.imageSmoothingEnabled = false
g.drawImage(render_prep_canvas, view.low_x, view.low_y, view.used_width, view.used_height)
}
if (view.brush == 'box' && view.box) {
g.fillStyle = 'rgba(255,0,0,0.6)'
if (view.box.length == 2)
g.fillRect(view.box[0], view.box[1], 1, 1)
else
g.fillRect(view.box[0], view.box[1], view.box[2] - view.box[0] + 1, view.box[3] - view.box[1] + 1)
}
}
var t1_agg = 0
var t2_agg = 0
function loop() {
var a = 0.1
if (view.play) {
var t0 = Date.now()
propagate()
propagate()
propagate()
propagate()
propagate()
propagate()
propagate()
propagate()
propagate()
propagate()
var t1 = Date.now()
t1_agg = a * (t1 - t0) + (1 - a) * t1_agg
var t0 = Date.now()
render()
var t1 = Date.now()
t2_agg = a * (t1 - t0) + (1 - a) * t2_agg
}
setTimeout(loop, LOOP_INTERVAL)
}
update_model({})
loop()
c.onmousemove = function (e) {
var pos = getRelPos(c, e)
var x = Math.floor((pos.x - c.width/2) / view.scale + view.x)
var y = Math.floor((pos.y - c.height/2) / view.scale + view.y)
location_viewer.value = x + ',' + y
}
c.onmousedown = function (e) {
e.preventDefault()
var old_pos = getRelPos(c, e)
var moved = false
var oldMove = document.onmousemove
document.onmousemove = function (e) {
var new_pos = getRelPos(c, e)
moved = true
view.x -= (new_pos.x - old_pos.x) / view.scale
view.y -= (new_pos.y - old_pos.y) / view.scale
render()
old_pos = new_pos
}
var oldUp = document.onmouseup
document.onmouseup = function (e) {
document.onmousemove = oldMove
document.onmouseup = oldUp
if (!moved) {
var new_pos = getRelPos(c, e)
var x = Math.floor((new_pos.x - c.width/2) / view.scale + view.x)
var y = Math.floor((new_pos.y - c.height/2) / view.scale + view.y)
var key = x + ',' + y
var changes = {}
var clicked_thing = get_thing_at(x, y)
if (view.brush == 'box') {
if (e.shiftKey && view.box && view.box.length == 4) {
if (e.metaKey) {
var the_dead = delete_view_box(changes)
each(the_dead, function (_) {
var X = _.x - view.box[0] + x
var Y = _.y - view.box[1] + y
changes[X + ',' + Y] = {
x : X,
y : Y,
t : _.t,
c : _.c,
v : _.v
}
})
view.box = [x, y, view.box[2] - view.box[0] + x, view.box[3] - view.box[1] + y]
view.copy = copy_view_box()
} else {
each(view.copy, function (_) {
var X = _.x - view.box[0] + x
var Y = _.y - view.box[1] + y
changes[X + ',' + Y] = {
x : X,
y : Y,
t : _.t,
c : _.c,
v : _.v
}
})
}
} else {
if (!view.box || view.box.length == 4) {
view.box = [x, y]
} else {
view.box = [
Math.min(view.box[0], x),
Math.min(view.box[1], y),
Math.max(view.box[0], x),
Math.max(view.box[1], y)
]
view.copy = copy_view_box()
}
}
} else if (view.brush == 'delete') {
if (e.shiftKey) {
function delete_wires_at(x, y) {
var key = x + ',' + y
var _ = model[key]
if (_ && _.t == 'wire') {
changes[key] = null
} else if (_ && _.t == 'cross_gate') {
changes[key] = {
x : _.x,
y : _.y,
t : 'wire',
c : -1,
v : 0
}
}
}
var dx = x - view.prev_x
var dy = y - view.prev_y
if (Math.abs(dx) > Math.abs(dy)) {
if (dx > 0)
for (var i = view.prev_x; i <= x; i++)
delete_wires_at(i, view.prev_y)
else
for (var i = x; i <= view.prev_x; i++)
delete_wires_at(i, view.prev_y)
} else {
if (dy > 0)
for (var i = view.prev_y; i <= y; i++)
delete_wires_at(view.prev_x, i)
else
for (var i = y; i <= view.prev_y; i++)
delete_wires_at(view.prev_x, i)
}
} else if (clicked_thing) {
changes[clicked_thing.x + ',' + clicked_thing.y] = null
}
} else if (clicked_thing && clicked_thing.type == 'toggle') {
clicked_thing.cc *= clicked_thing * -1
wave_front[clicked_thing.x + ',' + clicked_thing.y] = {
x : clicked_thing.x,
y : clicked_thing.y
}
return
} else if (view.brush == 'wire') {
function add_wire(x, y, direction) {
if (direction == 'horz') {
if (model[x + ',' + y] &&
model[x + ',' + y].t == 'wire' &&
model[x + ',' + (y - 1)] &&
model[x + ',' + (y - 1)].t == 'wire' &&
model[x + ',' + (y + 1)] &&
model[x + ',' + (y + 1)].t == 'wire') {
changes[x + ',' + y] = {
x : x,
y : y,
t : 'cross_gate',
c : -1,
v : 0
}
return
}
}
if (direction == 'vert') {
if (model[x + ',' + y] &&
model[x + ',' + y].t == 'wire' &&
model[(x - 1) + ',' + y] &&
model[(x - 1) + ',' + y].t == 'wire' &&
model[(x + 1) + ',' + y] &&
model[(x + 1) + ',' + y].t == 'wire') {
changes[x + ',' + y] = {
x : x,
y : y,
t : 'cross_gate',
c : -1,
v : 0
}
return
}
}
changes[x + ',' + y] = {
x : x,
y : y,
t : 'wire',
c : -1,
v : 0
}
}
if (e.shiftKey) {
var dx = x - view.prev_x
var dy = y - view.prev_y
if (Math.abs(dx) > Math.abs(dy)) {
if (dx > 0) {
for (var i = view.prev_x; i <= x; i++)
add_wire(i, view.prev_y, 'horz')
} else {
for (var i = x; i <= view.prev_x; i++)
add_wire(i, view.prev_y, 'horz')
}
} else {
if (dy > 0) {
for (var i = view.prev_y; i <= y; i++)
add_wire(view.prev_x, i, 'vert')
} else {
for (var i = y; i <= view.prev_y; i++)
add_wire(view.prev_x, i, 'vert')
}
}
} else {
add_wire(x, y)
}
} else {
if (clicked_thing) {
changes[clicked_thing.x + ',' + clicked_thing.y] = null
}
changes[key] = {
x : x,
y : y,
t : view.brush,
c : -1,
v : 0
}
}
view.prev_x = x
view.prev_y = y
update_model(changes)
}
}
}
function getPos(e) {
var x = 0, y = 0
while (e != null) {
x += e.offsetLeft
y += e.offsetTop
e = e.offsetParent
}
return {x : x, y : y}
}
function getRelPos(to, positionedObject) {
var pos = getPos(to)
return {
x : positionedObject.pageX - pos.x,
y : positionedObject.pageY - pos.y
}
}
function each(o, cb) {
if (o instanceof Array) {
for (var i = 0; i < o.length; i++) {
if (cb(o[i], i, o) == false)
return false
}
} else {
for (var k in o) {
if (o.hasOwnProperty(k)) {
if (cb(o[k], k, o) == false)
return false
}
}
}
return true
}
</script>