Smashcraft

UCLA CS174A Final Project

Live demo: http://smashcraft.co/

NOTE: to run it yourself, you have to deploy it using a webserver like SimpleHTTPServer or Apache because of Cross Site Scripting errors for the audio and textures.

Authors

• Alexander Ramirez adr2370@gmail.com
• Steven La mrstevenla@gmail.com
• Glen Takahashi glen.takahashi@gmail.com
• Sarah Wong kitsarwong@gmail.com

Controls

• Player 1

  • WSAD: move
  • Q: punch
  • E: kick
  • V: dodge

• Player 2

  • Arrow keys: move
  • Enter: punch
  • Shift: kick
  • .: dodge

• Player 3

  • YGHJ: move
  • T: punch
  • U: kick
  • V: dodge

• Player 4

  • PL;': move
  • O: punch
  • [: kick
  • ]: dodge

• Settings

  • 2-4: set number of players
  • 5-0: start game with stage
  • Enter: start game with stage ID 5

Project Introduction

Smashcraft is a WebGL Super Smash Bros. clone in the style of Minecraft.

We tried to have our code as object-oriented as possible. There is a game object, which contains an array of player objects and an array of platform objects. Both of those objects types contain another object that has information about the 3D model and its transformations.

Each game tick obtains data from the controller object and physics inside the player object and alters the physics of each player accordingly.

Project Result

Advanced topics

• Bump/normal mapping
• Physics simulation
• Collision detection
• Model representation using a stack

Not advanced topics, but fun anyway

• Sound
• Multiplayer

The platforms have normal mapping applied to them. A rotating point light shows how the normals change across the texture. Each platform texture has a separate normal map in tangent space that shows what the normals look like. We transform those normals into object space to get the overall normal of a point on a tri.

Physics happens in two dimensions (YZ plane). The main components of this system are acceleration (force) and velocity (momentum). Every action, such as jumping, attacking, and moving, apply a force that will get added to the momentum. Knockback formulas are loosely based on Cathy J. Fitzpatrick's article about Super Smash Bros. Brawl's physics.

Collision detection is done with bounding volumes and points. Attacks are represented by a bounding volume, and if that volume intersects the player volume a hit is registered.

Models are represented in models.js and player-models.js. Each file contains separate information about its verticies and components. Player models use the stack extensively, since transformations are applied such that it the arms and legs are attached to the rest of the body.

Sound is done using HTML5 audio and javascript. Multiplayer is handled in the code for the game controller.