Introduction

A tower-defense game is a type of strategy game where players will place down “towers”, usually with a form of in-game currency that will defend against a set of enemies. If you fail to defeat the enemies, you will typically lose health - when you reach zero, it’s Game Over.

In Bloons Tower Defense, the towers are monkeys, and the enemies are balloons, which spawn in rounds and travel along a pre-determined path. Your goal as a player is to strategically spend your currency while placing towers in effective locations, using their special abilities to win the game!

In this workshop, we will cover the fundamental aspects of a tower-defense game, and in future workshops, we will cover special abilities and ways that you can customize your game to make it your own!

In the third part of this workshop, you will finish up the game, adding more intricate paths, as well as two finalizing features: power-ups and tower upgrades! This includes:

• How to use a pre-built library to create circular and disjoint paths
• How to use nested ArrayLists to create multiple waves
• How to modify our code for towers and projectiles to create upgrades
• How to create spikes and a new interface for custom power-ups

You will need to download Processing 4.0 from https://processing.org/download, or have Processing 3 or newer installed.

In our workshop, we will be adding code to several templates, which you can download below.