Simple Tower

This tutorial will create a simple tower defence style game. In order not to give too much away, it will only pre-create a single tower and only have a single enemy. For your actual project you will need to position towers, have swarms of enemies.

The Enemy

You will need to create a new class, so click on project & select new class. Obviously give the class the name enemy. You will need to add the MonoGame references at the top of the code (in the using section).

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

No to create a moving enemy you will need to declare some variables within the class. The enemy is going to need a texture to display, but also a path to follow. The best way to represent a path would be to have a Queue of vectors, and each vector would be a waypoint for the enemy.

public Texture2D texture;
Queue<Vector2> path = new Queue<Vector2>();

In order to move the the enemy we will also need to know the current position, the destination, and how to move between the two. We also need a way to start the enemy, so declare a bool called active and set it to false.

Vector2 position;
Vector2 movement;
Vector2 destination;

bool active = false;