Game Physics Project

Author: Mathieu Wassmuth
Date: November, 2024

Overview

This repository contains code for my game physics project for the Advanced Games Physics course at HTW Berlin. The project is a basic physics-based game, where a slingshot launches a ball to hit a target. This project aims to apply concepts like acceleration, friction, collisions, and scaling within a cartesian coordinate system, all while working with p5.js.

Features

• State Machine: Manages game states (start, moving in air, moving on the plane, end).
• Collision Detection: Detects collisions with game objects like walls and obstacles.
• Slingshot Mechanics: Implements slingshot physics with adjustable angles and launch speeds.
• Game UI: Displays score, remaining attempts, and updates on game status.
• Realistic Physics:
  • Gravity and bounce effects for projectile motion
  • Friction for movement on the ground
  • Adjustable constants to change physics behavior

Getting Started

To run this project locally, you need p5.js. Clone the repository, then open index.html in your browser to start the game.

Prerequisites

• p5.js: Download and install p5.js

• This is included as a .js file in the repository

Installation

1. Clone this repository:

   git clone https://github.com/prodmatze/game_physics.git

2. Open index.html in your browser to run the game.

Usage

• NEW Button: Starts a new attempt without resetting the score.
• RESET Button: Resets the game and score.

Code Structure

• main.js: Main script handling game setup, states, and primary interactions.
• collisions.j: Manages collision detection for the ball, walls, ground, and obstacles.
• interactivity.js: Handles mouse controls for the slingshot and launching the ball.
• addOns.js: Contains: drawing functions for game elements like rectangles, triangles, and the flag.

Game Physics

The project includes these physics-based concepts:

• Projectile Motion: Simulates a projectile launched at an adjustable angle.
• Friction and Bouncing: Provides realistic responses when the ball hits the ground or walls.
• Scaling: All objects are scaled based on a cartesian coordinate system, converting real-world units to the screen display.
• Objective: The goal is to hit the red ball and sink it into a hole to score points, similar to a basic target game

Physics Constants

• Gravity: 981 cm/s² - Controls the downward acceleration of the projectile (play_ball)
• Bounce Factor: 0.8 - Determines how much of the downward acceleration gets preserved after each bounce of the ball
• Plane Friction: 0.95 - Applies friction when the ball moves along the ground.

Screenshots

More screenshots will get shown here after completion of the project Figure 1: Main game interface.