Add support for constants

build.js

@@ -43,7 +43,11 @@ const ctx = await esbuild.context({
 })
 
 if (serve) {
-  const { port, host } = await ctx.serve({ servedir: 'dist' })
+  await ctx.watch()
+  const { port, host } = await ctx.serve({
+    servedir: 'dist',
+    fallback: 'dist/index.html'
+  })
   console.log(`Serving on ${host}:${port}`)
 } else {
   await ctx.rebuild()

package.json

@@ -3,6 +3,7 @@
     "version": "1.0.0",
     "type": "module",
     "scripts": {
+        "dev": "ESBUILD_SERVE=1 node ./build.js",
         "build": "node ./build.js",
         "check": "tsc"
     },

src/index.ts

@@ -33,8 +33,10 @@ async function main() {
   }
 }
 
+new EventSource('/esbuild').addEventListener('change', () => location.reload())
+
 // Call entry
-main().catch(error => {
+main().catch((error) => {
   // if the error handling error has an error, log that error
   console.error('Error loading app', error)
 })

src/modules/activation/types/Context.ts

@@ -1,4 +1,4 @@
-import { Simulation, SimulationEnv } from '../../simulation/classes/Simulation'
+import { SimulationEnv } from '../../simulation/classes/Simulation'
 import { PinState } from '../../simulation/classes/Pin'
 
 export interface Context {
@@ -6,8 +6,12 @@ export interface Context {
   setProperty: (name: string, value: unknown) => void
   get: (index: number) => PinState
   set: (index: number, state: PinState) => void
+  getOutput: (index: number) => PinState
   getBinary: (index: number) => number
-    setBinary: (index: number, value: number, bits: number) => void
+  printBinary: (value: number, bits?: number) => string
+  printHex: (value: number, length?: number) => string
+  setBinary: (index: number, value: number, bits?: number) => void
+  getOutputBinary: (index: number) => number
   invertBinary: (value: number) => number
   color: (color: string) => void
   innerText: (value: string) => void

src/modules/logic-gates/components/GateProperties.scss

@@ -46,6 +46,10 @@ div .gate-prop-container {
   &.visible {
     margin: 1rem;
   }
+
+  &>* {
+    width: 100%;
+  }
 }
 
 div .gate-prop-group-container {

src/modules/logic-gates/components/GatePropertiesModal.tsx

@@ -1,9 +1,8 @@
 import './GateProperties.scss'
-import React, { ChangeEvent } from 'react'
+import { ChangeEvent } from 'react'
 import { getRendererSafely } from '../helpers/getRendererSafely'
 import { Property, RawProp, isGroup } from '../../simulation/types/GateTemplate'
 import { useObservable } from 'rxjs-hooks'
-import Divider from '@material-ui/core/Divider'
 import TextField from '@material-ui/core/TextField'
 import CheckBox from '@material-ui/core/Checkbox'
 import { open, id } from '../subjects/LogicGatePropsSubjects'
@@ -70,15 +69,13 @@ const GateRawProperty = ({
   // rerender when the external checkbox changes
   const external = useObservable(
     () =>
-            gate.props.external.pipe(
-                map((value) => value && name !== 'external')
-            ),
+      gate.props.external.pipe(map((value) => value && name !== 'external')),
     false
   )
 
-    const displayableName = `${name[0].toUpperCase()}${name.slice(1)} ${
-        external && name !== 'label' ? '(default value)' : ''
-    }:`
+  const displayableName = `${name[0].toUpperCase()}${name.slice(1)}${
+    external && name !== 'label' ? ' (default value)' : ''
+  }${raw.description == undefined ? '' : ` ${raw.description}`}:`
 
   const handleChange = (e: ChangeEvent<HTMLInputElement>) => {
     const target = e.target as HTMLInputElement
@@ -112,11 +109,7 @@ const GateRawProperty = ({
       return emptyInput
     }
 
-        if (
-            raw.type === 'number' ||
-            raw.type === 'text' ||
-            raw.type === 'string'
-        ) {
+    if (raw.type === 'number' || raw.type === 'text' || raw.type === 'string') {
       return (
         <TextField
           onChange={handleChange}
@@ -124,7 +117,6 @@ const GateRawProperty = ({
           value={outputSnapshot}
           type={raw.type}
           multiline={raw.type === 'string'}
-                    rowsMax={7}
         />
       )
     } else if (raw.type === 'boolean') {
@@ -145,9 +137,7 @@ const GateRawProperty = ({
 
   return (
     <div
-            className={`gate-prop-container ${
-                input !== emptyInput ? 'visible' : ''
-            }`}
+      className={`gate-prop-container ${input !== emptyInput ? 'visible' : ''}`}
     >
       {input}
     </div>

src/modules/saving/constants.ts

@@ -20,6 +20,7 @@ import comparatorTemplate from './templates/comparator'
 import bitMergerTemplate from './templates/bitMerger'
 import bitSplitterTemplate from './templates/bitSplitter'
 import incrementorTemplate from './templates/incrementor'
+import constantTemplate from './templates/constant'
 
 export const defaultSimulationName = 'default'
 export const baseTemplates: DeepPartial<GateTemplate>[] = [
@@ -42,7 +43,8 @@ export const baseTemplates: DeepPartial<GateTemplate>[] = [
   comparatorTemplate,
   bitMergerTemplate,
   bitSplitterTemplate,
-    incrementorTemplate
+  incrementorTemplate,
+  constantTemplate
 ]
 
 export const baseSave: RendererState = {

src/modules/saving/templates/constant.ts

@@ -0,0 +1,60 @@
+import { PartialTemplate } from '../types/PartialTemplate'
+import { categories } from '../data/categories'
+
+/**
+ * The template of the button gate
+ */
+const constTemplate: PartialTemplate = {
+  metadata: {
+    name: 'constant'
+  },
+  material: {
+    fill: '#673AB7',
+    stroke: {
+      normal: '#EDC6FB'
+    }
+  },
+  code: {
+    activation: `
+      const state = context.getProperty('value')
+      const bits = context.getProperty('output bits')
+      const length = state.toString(2).length
+      const text = length > 10
+        ? "0x" + context.printHex(state, Math.ceil(length/4))
+        : context.printBinary(state, length)
+
+      context.setBinary(0, state, bits === 0 ? length : bits)
+      context.innerText(text)
+    `
+  },
+  pins: {
+    inputs: {
+      count: 0
+    }
+  },
+  integration: {
+    input: true
+  },
+  info: [],
+  properties: {
+    enabled: true,
+    data: [
+      {
+        base: 0,
+        name: 'output bits',
+        description: '(0 for auto)',
+        type: 'number',
+        needsUpdate: true
+      },
+      {
+        base: 0,
+        name: 'value',
+        type: 'number',
+        needsUpdate: true
+      }
+    ]
+  },
+  category: categories.io
+}
+
+export default constTemplate

src/modules/simulation/classes/Gate.ts

@@ -9,12 +9,7 @@ import {
 import { idStore } from '../stores/idStore'
 import { Context, InitialisationContext } from '../../activation/types/Context'
 import { toFunction } from '../../activation/helpers/toFunction'
-import {
-    Subscription,
-    BehaviorSubject,
-    asapScheduler,
-    animationFrameScheduler
-} from 'rxjs'
+import { Subscription, BehaviorSubject } from 'rxjs'
 import { SimulationError } from '../../errors/classes/SimulationError'
 import { getGateTimePipes } from '../helpers/getGateTimePipes'
 import { ImageStore } from '../../simulationRenderer/stores/imageStore'
@@ -25,7 +20,6 @@ import { saveStore } from '../../saving/stores/saveStore'
 import { Wire } from './Wire'
 import { cleanSimulation } from '../../simulation-actions/helpers/clean'
 import { ExecutionQueue } from '../../activation/classes/ExecutionQueue'
-import { tap, observeOn } from 'rxjs/operators'
 import { PropsSave } from '../../saving/types/SimulationSave'
 import { ValueOf } from '../../../common/lang/record/types/ValueOf'
 
@@ -139,7 +133,7 @@ export class Gate {
    * Holds all the gate-related text
    */
   public text = {
-        inner: new BehaviorSubject('text goes here')
+    inner: new BehaviorSubject<string | null>(null)
   }
 
   /**
@@ -170,21 +164,10 @@ export class Gate {
       'context'
     )
 
-        this.functions.onClick = toFunction(
-            this.template.code.onClick,
-            'context'
-        )
+    this.functions.onClick = toFunction(this.template.code.onClick, 'context')
 
-        this._pins.inputs = Gate.generatePins(
-            this.template.pins.inputs,
-            1,
-            this
-        )
-        this._pins.outputs = Gate.generatePins(
-            this.template.pins.outputs,
-            2,
-            this
-        )
+    this._pins.inputs = Gate.generatePins(this.template.pins.inputs, 1, this)
+    this._pins.outputs = Gate.generatePins(this.template.pins.outputs, 2, this)
 
     if (this.template.material.type === 'image') {
       ImageStore.set(this.template.material.fill)
@@ -198,7 +181,7 @@ export class Gate {
       const subscription = pin.state.pipe(...pipes).subscribe(() => {
         if (this.template.code.async) {
           this.executionQueue.push(async () => {
-                        return await this.update()
+            return this.update()
           })
         } else {
           this.update()
@@ -305,7 +288,7 @@ export class Gate {
   }
 
   /**
-     * Assign the props passed to the gate and mere them with the base ones
+   * Assign the props passed to the gate and merge them with the base ones
    */
   private assignProps(
     source: PropsSave,
@@ -313,14 +296,15 @@ export class Gate {
     target: GateProps = this.props,
     path: string[] = []
   ) {
-        let shouldUpdate = false
+    // We don't want to update until every prop has been created
+    let lockUpdates = true
 
     if (this.template.properties.enabled) {
       for (const prop of props) {
         if (isGroup(prop)) {
           const { groupName } = prop
           target[groupName] = {} as GateProps
-                    const needsUpdate = this.assignProps(
+          this.assignProps(
             typeof source[groupName] === 'object'
               ? (source[groupName] as PropsSave)
               : {},
@@ -329,10 +313,6 @@ export class Gate {
             [...path, groupName]
           )
 
-                    if (needsUpdate) {
-                        shouldUpdate = true
-                    }
-
           continue
         }
 
@@ -346,7 +326,7 @@ export class Gate {
 
         this.subscriptions.push(
           subject.subscribe((value) => {
-                        if (needsUpdate && path.length === 0) {
+            if (!lockUpdates && needsUpdate && path.length === 0) {
               return this.update()
             }
 
@@ -357,14 +337,11 @@ export class Gate {
             this.updateNestedProp([...path, name], value)
           })
         )
-
-                if (needsUpdate) {
-                    shouldUpdate = true
-                }
       }
     }
 
-        return shouldUpdate
+    lockUpdates = false
+    this.update()
   }
 
   /**
@@ -446,7 +423,8 @@ export class Gate {
 
     const toLength = (
       original: string | number,
-            length: number = maxLength
+      length: number = maxLength,
+      paddingChar = '0'
     ) => {
       const value = original.toString(2)
 
@@ -455,31 +433,37 @@ export class Gate {
       } else if (value.length > length) {
         const difference = value.length - length
 
-                return value.substr(difference)
+        return value.slice(difference)
       } else {
-                return `${'0'.repeat(length - value.length)}${value}`
+        return `${paddingChar.repeat(length - value.length)}${value}`
       }
     }
 
     return {
+      printBinary: (value: number, bits: number = maxLength) =>
+        toLength(value.toString(2), bits),
+      printHex: (value: number, bits: number = maxLength) =>
+        toLength(value.toString(16), bits),
       get: (index: number) => {
         return this._pins.inputs[index].state.value
       },
       set: (index: number, state) => {
         return this._pins.outputs[index].state.next(state)
       },
+      getOutput: (index: number) => {
+        return this._pins.outputs[index].state.value
+      },
       getBinary: (index: number) => {
         return parseInt(this._pins.inputs[index].state.value, 2)
       },
-            setBinary: (
-                index: number,
-                value: number,
-                bits: number = maxLength
-            ) => {
+      setBinary: (index: number, value: number, bits: number = maxLength) => {
         return this._pins.outputs[index].state.next(
           toLength(value.toString(2), bits)
         )
       },
+      getOutputBinary: (index: number) => {
+        return parseInt(this._pins.outputs[index].state.value, 2)
+      },
       invertBinary: (value: number) => {
         return value ^ ((1 << maxLength) - 1)
       },
@@ -489,7 +473,16 @@ export class Gate {
         }
       },
       getProperty: (name: string) => {
+        if (this.props[name] === undefined) {
+          throw new Error(
+            [
+              `Cannot find property ${name} on gate ${this.template.metadata.name}.`,
+              `Current values: ${Object.keys(this.props)}`
+            ].join('\n')
+          )
+        } else {
           return this.props[name].value
+        }
       },
       setProperty: (name: string, value: string | number | boolean) => {
         const subject = this.props[name]
@@ -551,6 +544,6 @@ export class Gate {
   private static generatePins(options: PinCount, type: number, gate: Gate) {
     return [...Array(options.count)]
       .fill(true)
-            .map((v, index) => new Pin(type, gate))
+      .map((_v, _index) => new Pin(type, gate))
   }
 }

src/modules/simulation/types/GateTemplate.ts

@@ -21,6 +21,7 @@ export type RawProp<
   type: 'number' | 'string' | 'text' | 'boolean'
   base: T
   name: string
+  description?: string
   needsUpdate?: boolean
 }
 export type Property<

src/modules/simulationRenderer/data/textSettings.ts

@@ -1,5 +1,5 @@
 export const textSettings = {
-    font: '30px Roboto',
+  font: '30px monospace',
   offset: 35,
   fill: `rgba(256,256,256,0.75)`
 }

src/modules/simulationRenderer/helpers/pinFill.ts

@@ -16,7 +16,7 @@ export const pinFill = (renderer: SimulationRenderer, pin: Pin) => {
       .map((key) =>
         chunked
           .flat()
-          .filter((v, index) => index % 3 === key)
+          .filter((_v, index) => index % 3 === key)
           .reduce((acc, curr) => acc + curr, 0)
       )
       .map((value) => Math.floor(value / digits.length))

src/modules/simulationRenderer/helpers/renderGate.ts

@@ -61,6 +61,7 @@ export const renderGate = (
   ctx.stroke()
 
   if (gate.template.tags.includes('integrated')) {
+    ctx.textBaseline = 'top'
     ctx.fillStyle = textSettings.fill
     ctx.fillText(
       gate.template.metadata.name,
@@ -69,5 +70,25 @@ export const renderGate = (
     )
   }
 
+  const text = gate.text.inner.value
+  if (text !== null) {
+    ctx.textBaseline = 'middle'
+    ctx.fillStyle = textSettings.fill
+
+    let size = 30
+    if (text.length >= 8) {
+      size = 15
+    } else if (text.length >= 6) {
+      size = 20
+    }
+
+    ctx.font = `${size}px monospace`
+    ctx.fillText(
+      text,
+      relativeTransform.center[0],
+      relativeTransform.center[1] + 2
+    )
+  }
+
   ctx.restore()
 }