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Lesson 2: Defensive Plants

Objective 🧐🗿​

In this session, we will implement the behavior and management of some defensive plants, particularly Wall-nut. If you already implemented Wall-nut, well time for Tallnut!

Step 1 - Creating the Wall-nut Object 🥜📦​

1.1 Creating the Wall-nut​

You should already have a peashooter and the plant script inside the peashooter object (not the one in plant slots) working before this lesson.

  • Wall-nut sprite: Find asset sprite transparent images to use in our Unity game. We will be looking for the Wall-nut.
  • Creating our Wall-nut object: Duplicate our existing peashooter object. It should already and change the sprite and sprite object.
  • Wall-nut Doesn't attack: The Wall-nut's job is not attacking, so we will be removing the shoot script from it.

Step 2 - Designing the Wall-nut 🥜🔧​

2.1 Tweaking our Wall-nut Values​

Organize your game space:

  • Properties assigning: Give the Wall-nut a good chunk of health!
  • Create the box collider: Make the hit collider fit with the Wall-nut sprite.

2.2 Final Touches​

Make sure the Wall-nut is able to be planted down and tank a bunch of hits from the zombie. Double check the plant script if Wall-nut doesn't act, well like a Wall-nut.

Medium: Add Wall-nut animations

Goal: Implement interactive behaviors for the Wall-nut.

2.1 Gather your assets

Search online for peashooter assets to animate! Preferably a Wall-nut sheet with a different image for each frame.

2.2 Editing the sheet

Use the sprite editor and slice the sheet file, then replace the existing peashooter object's sprite with the peashooter sheet.

2.3 Animate

Use the animation editor to create an animation! Simply drag the images onto the editor and click play until the animation looks right.

Hard: Add multiple sprite images for the Wall-nut when it is at different health points

Goal: Implement a Wall-nut with 3 phases.

The Wall-nut should have three different phases base on how much health he have. You will need to make a script inside the Wall-nut object, you got this!