"Rise Up, Power Up, Never Give Up" - RoboRebellion

This is a submission for the Alibaba Cloud Challenge: Build a Web Game.* What WE Built RoboRebellion is a top-down action shooter where players control one of three specialized combat robots. Fight through endless waves of enemy robots in an arena-style battlefield, collecting powerups and maximizing your score. FOR MORE INFORMATION ABOUT OUR GAME, SEE README.md Demo PLAY IT HERE: https://robot-rr.vercel.app/ GITHUB REPO HERE: https://github.com/rachelannec/RR-R 1. Gameplay 1.1 Core Loop Select robot class Battle waves of enemies Collect powerups Survive as long as possible Game over when health reaches zero Compete for high scores 1.2 Player Controls Movement: WASD or Arrow Keys Aim: Mouse pointer Shoot: Left mouse button Dash: Spacebar (3-second cooldown) Pause: ESC key 1.3 Player Characters Robot Type Color Speed Health Fire Rate Damage Special Traits Assault Green 220 100 Fast Medium Balanced, versatile Tank Yellow 160 150 Slow High Durable, powerful shots Stealth Blue 250 75 Very Fast Low Agile, rapid fire 1.4 Enemies Enemy Type Appearance Behavior Health Damage Points Chaser Triangle Pursues player directly Low Medium 100 Shooter Diamond Maintains distance, fires at player Medium Low 150 Tank Hexagon Slow movement, fires in multiple directions High High 250 1.5 Powerups Powerup Effect Duration Health Pack (Green) Restores 30 heath Permanent Rapid Fire (Yellow) 50% faster firing rate 10 seconds Damage Boost (Red) 50% increased damage 10 seconds 2. Progression 2.1 Wave System Game starts at Wave 1 Each wave increases enemy count and health Enemy type distribution changes as waves progress: Early waves: Mostly chasers Mid waves: Mix of chasers and shooters Later waves: All types with more tanks 2.2 Difficulty Scaling Enemy health increases each wave Enemy damage increases slightly More enemies spawn per wave Enemy type mix becomes more challenging Alibaba Cloud Services Implementation Overview of Alibaba Cloud Services in Your Game Our Robo Rebellion game uses Alibaba Cloud Object Storage Service (OSS) as the backend storage solution. Here's a comprehensive guide to how it's implemented. OSS Integration Architecture Game Client (Browser) ↔ Node.js Server ↔ Alibaba Cloud OSS Client-side: Makes API calls to your server Server-side: Authenticates and interacts with OSS OSS: Stores and retrieves game data Key Components Server-Side Integration (server.js) // OSS Client configuration function createOSSClient() { return new OSS({ region: process.env.OSS_REGION, accessKeyId: process.env.OSS_ACCESS_KEY_ID, accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET, bucket: process.env.OSS_BUCKET, endpoint: process.env.OSS_ENDPOINT, secure: true }); } Data Storage Structure Your implementation uses three main storage areas: leaderboard.json - Global leaderboard data scores/ - Individual score files OSS Operations Used Operation Purpose Example put Store data client.put('scores/123456.json', Buffer.from(JSON.stringify(data))) get Retrieve data client.get('leaderboard.json') list List files client.list({ prefix: 'scores/', 'max-keys': 100 }) head Check if file exists client.head('leaderboard.json') Key Features Leaderboard System // Update leaderboard with the new score try { // Get existing leaderboard const result = await client.get('leaderboard.json'); const leaderboard = JSON.parse(result.content.toString()); // Add new score leaderboard.push(scoreData); // Sort by score (highest first) leaderboard.sort((a, b) => b.score - a.score); // Keep top 100 scores const topScores = leaderboard.slice(0, 100); // Save back to OSS await client.put('leaderboard.json', Buffer.from(JSON.stringify(topScores))); } Individual Score Records Each score is saved as an individual JSON file Filename pattern: scores/{timestamp}{robotType}{score}.json Includes metadata like player name, robot type, and timestamp Our Experience Working With Alibaba Cloud Just similar on what we have written in our another submission. Lemme just copy & paste it Story time. Since we cannot avail the free trial we really went out buying for the stuff

Apr 28, 2025 - 04:44

"Rise Up, Power Up, Never Give Up" - RoboRebellion

This is a submission for the Alibaba Cloud Challenge: Build a Web Game.*

What WE Built

RoboRebellion is a top-down action shooter where players control one of three specialized combat robots. Fight through endless waves of enemy robots in an arena-style battlefield, collecting powerups and maximizing your score.

FOR MORE INFORMATION ABOUT OUR GAME, SEE README.md

Demo

PLAY IT HERE: https://robot-rr.vercel.app/

GITHUB REPO HERE: https://github.com/rachelannec/RR-R

1. Gameplay

1.1 Core Loop

Select robot class
Battle waves of enemies
Collect powerups
Survive as long as possible
Game over when health reaches zero
Compete for high scores

1.2 Player Controls

Movement: WASD or Arrow Keys
Aim: Mouse pointer
Shoot: Left mouse button
Dash: Spacebar (3-second cooldown)
Pause: ESC key

1.3 Player Characters

Robot Type	Color	Speed	Health	Fire Rate	Damage	Special Traits
Assault	Green	220	100	Fast	Medium	Balanced, versatile
Tank	Yellow	160	150	Slow	High	Durable, powerful shots
Stealth	Blue	250	75	Very Fast	Low	Agile, rapid fire

1.4 Enemies

Enemy Type	Appearance	Behavior	Health	Damage	Points
Chaser	Triangle	Pursues player directly	Low	Medium	100
Shooter	Diamond	Maintains distance, fires at player	Medium	Low	150
Tank	Hexagon	Slow movement, fires in multiple directions	High	High	250

1.5 Powerups

Powerup	Effect	Duration
Health Pack (Green)	Restores 30 heath	Permanent
Rapid Fire (Yellow)	50% faster firing rate	10 seconds
Damage Boost (Red)	50% increased damage	10 seconds

2. Progression

2.1 Wave System

Game starts at Wave 1
Each wave increases enemy count and health
Enemy type distribution changes as waves progress:
- Early waves: Mostly chasers
- Mid waves: Mix of chasers and shooters
- Later waves: All types with more tanks

2.2 Difficulty Scaling

Enemy health increases each wave
Enemy damage increases slightly
More enemies spawn per wave
Enemy type mix becomes more challenging

Alibaba Cloud Services Implementation

Overview of Alibaba Cloud Services in Your Game

Our Robo Rebellion game uses Alibaba Cloud Object Storage Service (OSS) as the backend storage solution. Here's a comprehensive guide to how it's implemented.

OSS Integration Architecture Game Client (Browser) ↔ Node.js Server ↔ Alibaba Cloud OSS
Client-side: Makes API calls to your server
Server-side: Authenticates and interacts with OSS
OSS: Stores and retrieves game data
Key Components

Server-Side Integration (server.js)

// OSS Client configuration
function createOSSClient() {
  return new OSS({
    region: process.env.OSS_REGION,
    accessKeyId: process.env.OSS_ACCESS_KEY_ID,
    accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
    bucket: process.env.OSS_BUCKET,
    endpoint: process.env.OSS_ENDPOINT,
    secure: true
  });
}

Data Storage Structure
Your implementation uses three main storage areas:

leaderboard.json - Global leaderboard data
scores/ - Individual score files

OSS Operations Used

Operation	Purpose	Example
put	Store data	`client.put('scores/123456.json', Buffer.from(JSON.stringify(data)))`
get	Retrieve data	`client.get('leaderboard.json')`
list	List files	`client.list({ prefix: 'scores/', 'max-keys': 100 })`
head	Check if file exists	`client.head('leaderboard.json')`

Key Features Leaderboard System

// Update leaderboard with the new score
try {
  // Get existing leaderboard
  const result = await client.get('leaderboard.json');
  const leaderboard = JSON.parse(result.content.toString());

  // Add new score
  leaderboard.push(scoreData);

  // Sort by score (highest first)
  leaderboard.sort((a, b) => b.score - a.score);

  // Keep top 100 scores
  const topScores = leaderboard.slice(0, 100);

  // Save back to OSS
  await client.put('leaderboard.json', Buffer.from(JSON.stringify(topScores)));
}

Individual Score Records

Each score is saved as an individual JSON file
Filename pattern: scores/{timestamp}{robotType}{score}.json
Includes metadata like player name, robot type, and timestamp

Our Experience Working With Alibaba Cloud

Just similar on what we have written in our another submission. Lemme just copy & paste it

Story time.
Since we cannot avail the free trial we really went out buying for the stuff