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Interactive Coding Game with Blockly and Two.js

This project teaches kids coding concepts through a visual programming environment. It integrates google's blockly for block combinations and a two.js canvas to display the character (a circle).

Deployment

This application is deployed on Vercel.

Overview

The game provides a simple 2D environment where kids can control an object (e.g., a circle or a robot) using Blockly's drag-and-drop code blocks. This project demonstrates how to integrate Blockly and Two.js to create an interactive learning experience.

Blockly and Two.js Interaction

The interaction between Blockly and Two.js is a sophisticated process that enables visual programming:

  1. Block Creation and Code Generation:

    • Users drag and drop visual code blocks in the Blockly workspace
    • Blockly converts these blocks into executable JavaScript code
    • Custom block generators translate block logic into game commands

  2. Code Execution Mechanism:

    • When the "Run" button is pressed, the runCode() function is triggered
    • Blockly generates JavaScript code from the workspace
    • The code is wrapped in an async function and executed using eval()
    • Wrapper functions like move_forward() translate block commands into Two.js game actions

A Simple Winning Combination

Alt Text

Setup

Important:
This project needs to be served locally using a python web server because Two.js objects may not be sent or rendered correctly if you open the index.html file directly in the browser. Please follow the following steps to run it locally using a web server.

  1. Clone the repository
    First, clone the repository to your local machine using Git: 
    git clone https://github.com/MHuzaifa191/blockly-game.git
  2. Navigate to project directory 
    cd blockly-game
  3. Serve the files locally using a web server 
     python -m http.server 8000

Blocks Overview

This project includes several custom Blockly blocks, each representing different actions or control flow in the game. Below is a list of the blocks added, along with the available options for each block:

1. Move in Previous Direction

  • Description: A simple move block that moves the circle in the previous default direction.

2. Move In Direction

  • Description: Overwrites the previous direction to move in the provided direction for a fixed distance.
  • Available Options: forward, backward, upward, downward.

3. Loop Until Distance (For Loop)

  • Description: Repeats an action until a specified distance is reached.
  • Available Options:
    • Distance <=: Input field to specify the target distance.

4. Loop Until Obstacle (While Loop)

  • Description: Repeats an action while an obstacle is detected.

5. Change Direction

  • Description: Changes the direction of movement.
  • Available Options:
    • forward, backward, upward, downward: Dropdown to select the desired direction.

6. If Condition

  • Description: Performs an action if a certain condition is met, and another action if the condition is false.
  • Available Options:
    • Any Obstacle: Detects if any obstacle is in front of the character.
    • Square, Circle, Rectangle: Detects specific types of obstacles.

7. Change Color

  • Description: Changes the color of a ball or object in the game.
  • Available Options:
    • Red, Green, Blue, Yellow: Predefined colors to change the ball's color.

Technologies Used

  • HTML5: For structuring the webpage.
  • CSS: For styling the webpage.
  • JavaScript: For connecting Blockly to the Two.js game and handling game logic.
  • Blockly: A visual programming library for creating drag-and-drop code interfaces.
  • Two.js: A 2D rendering library for canvas and SVG.