Coraffic - Cornell MPS Program Team

Traffic Simulator for Microsoft Makecode Editor

This program allows you to interact with traffic simulation using PXT (Microsoft Programming Experience Toolkit)

Try it alive: https://liolop.github.io/Coraffic

Preview of the Editor

Editor Example

Preview of the Example

Code Example

Beat the Traffic - Event

// Create event blocks
events.onCarInter(0, function () {
    intersections.setDirAtInter(TLDir.NS, 0)
    intersections.setDirAtInter(TLDir.EW, 1)
    intersections.setDirAtInter(TLDir.NS, 2)
})

Beat the Traffic - Intersections

/* Create controls of intersections' actions */

// Create a forever loop
loops.forever(function () {
  // Create a for loop for setting up the allowed directions to be North-South at all intersections
  for (let index = 0; index <= 7; index++) {
      intersections.setDirAtInter(TLDir.NS, index)
  }
})

Beat the Traffic - Status

/* Use Status blocks to check conditions for controlling intersections

loops.forever(function () {
  for (let index = 0; index <= 7; index++) {
      // Check number of cars waiting for North-South at intersection (index)
      if (status.getCarsWait(TLDir.NS, index) > 1) {
          intersections.setDirAtInter(TLDir.NS, index)
      } 
      // Check number of cars waiting for East-West at intersection (index)
      else if (status.getCarsWait(TLDir.EW, index) >= 1) {
          intersections.setDirAtInter(TLDir.EW, index)
      } 
      // Check allowed direction at intersection (index)
      else if (status.getDirection(index) == status.locParam(TLDir.NS)) {
          intersections.setDirAtInter(TLDir.EW, index)
      } 
      // Check how long has the allowed direction been set at a random intersection
      else if (status.getDuration(status.randIndex()) >= 2) {
          intersections.setDirAtInter(TLDir.NS, status.randIndex())
      }
  }
})

Running Locally

Set up

Install node.js
Install PXT command line
```
npm install -g pxt
```
Install the dependencies
```
npm install
```

Running the local server

After you're done, simple run this command to open a local web server:
```
pxt serve
```
Updating the tools
```
pxt update
```

More instructions at https://github.com/Microsoft/pxt#running-a-target-from-localhost

Coraffic

Install / Use

README