Defining the properties of the tower

The basic characteristics of a tower can be summarized as follows:

• It will have a specified range

• It will fire at one or more enemies that enter its range

• It will do one or more kinds of damage to its enemies

• It will cost money to build or upgrade, and can be sold

Based on these characteristics, we shall define the following properties for a tower in our game:

• Physical damage

• Magical damage

• Speed damage

• Range of fire

• Rate of fire

• Cost to build

These properties are varied enough to build a simple yet interesting game. With the help of a skilled level designer, you can even make the player enjoy hours of satisfying gameplay.

Let's quickly take a look at the XML structure that is defined to accommodate the data for the towers in this game:

<TowerDataSetList>

  <TowerDataSet bullet_name="TD_bullet01.png" is_lightning="false" is_rotating="true">
    <TowerData sprite_name="TD_t01gun01.png" range="1.5" physical_damage="10" magical_damage="0" speed_damage...