Bomb

In the “Prefabs” folder, you will find “Bomb.prefab”.
If you look at it, you’ll see it has a few components on it including a SpriteRenderer with this image on it:

You might also notice it has a LineRenderer, a Bomb script, and a CircleCollider2D.

We will be talking about Colliders and Collision Detection next week.
For this week, I have set it up for you.
I don’t have plans to specifically cover LineRenderer in class, but they are often useful.
I suggest you use this as an example to refer to when you need to learn about them.

• In the Game Scene, find the GameObject named “FireControl”
• That object has a FireControl script on it
• Drag your “Bomb” prefab into the “Bomb” slot of FireControl
  • If you look in the code, you’ll see that is the variable m_bomb
  • Unity automatically converts “m_bomb” into “Bomb” for a more designer-friendly display
• Save the Scene

Targeting Crosshair

In the “Sprites” folder, you will find Missile_Crosshairs.png.

• Drag that into the scene to create a GameObject with a SpriteRenderer on it
• Drag that new GameObject into the “Prefabs” folder to create a prefab

For more information about prefabs, check out this supplementary video: Prefabs

• Delete the GameObject “Missile_Crosshairs” from your scene
  • We don’t want a crosshair in the scene to start off. This will be created as needed when the user touches the screen.
• Your “FireControl” object has a slot on it for “Cross Hair”. Drag your new prefab into this slot
  • If you look in the code, you’ll see that is the variable m_crossHair
  • Unity automatically converts “m_crossHair” into “Cross Hair” for display
• Save your scene

It’s not a bad idea to commit (and maybe even push) your project.
We haven’t done much, but it’s wise to commit small changes at a time.
You will need to add your new prefab and the meta file that goes with it.

Explosions

Create a new prefab for the missile explosion

• Drag the Sprite “Sprites\Explosion\Sprites\Explotion0008.png” into the scene to create a GameObject with a SpriteRenderer on it
• Rename the GameObject “Explosion”
• Add the script MissileExplosion to it
• Drag your new GameObject “Explosion” into the “Prefabs” folder to create a prefab
• Delete the GameObject from your scene

Create a new prefab for the bomb explosion

• Make a prefab called “BombExplosion” using Sprite “Sprites\BombExplosion\Sprites\Explotion0009.png”
  • Open the “Bomb” prefab
  • The Bomb class has a field on it called m_explosion. Fill that in with your “BombExplosion” prefab

Create a new prefab for the city explosion

• Make a prefab called “CityExplosion” using Sprite “Sprites\CityExplosion\Flame0009.png”

Missile

Create a new prefab for the Sprite “Sprites\Missile_small\Missile.png”.

• Drag that into the scene to create a GameObject with a SpriteRenderer on it
• Add the script Missile to it
• The Missile script has a field m_explosion. Fill that in with your prefab “Explosion”
• Drag your new GameObject “Missile” into the “Prefabs” folder to create a prefab
• Delete the GameObject from your scene
• Your “FireControl” object has a slot on it for “Missile”. Drag your new prefab into this slot
• Save your scene

City

Programmer art detected

• Drag Sprite “Sprites/City/CityA.png” into the scene to create a GameObject with a SpriteRenderer on it
• Name it “City”
• Add the script City to it
• City has a slot m_explosion on it. Put prefab “CityExplosion” in there
• Drag that new “City” GameObject into the “Prefabs” folder to create a prefab
• Delete the GameObject from your scene
• Your “FireControl” object has a slot on it for “City”. Drag your new prefab into this slot
• Save your scene

Play in Editor.
The bombs come down leaving their trails behind.
When they hit the cities, the “CityExplosion” sprite appears.
We don’t have any input control yet, so there’s nothing you can do about it.

It’s definitely time to commit and push.