UNITY | PROJECT | SPACE SHOOTER 2D | 3. Player Bullet and Player Shooting

SPACE SHOOTER 2D

3. Player Bullet and Player Shooting

Bullet Sprites

• Importing “Bullets” sprite

 

Sprite Editor | Slice

 

• by using “Sprite Editor”, slice “Bullets” sprites into 2 sprites
  • when slicing, set the type into “Grid By Cell Size”
  • when slicing, set the Pixel Size as 24×24

 

• Having 2 bullet sprites

 

Sprite Setting

• for the bullet sprite in the inspector
  • deselect “Generate Physics Shape”
  • Filter Mode into “Point(no filter)”
  • Max Size into “1024”

 

Adding prefab in the scene

• Add “Player Bullet” sprite in the scene to configure like adding a script

 

Adding a script to Bullet GameObject

• Adding “PlayerBullet” script to “PlayerBullet” GameObject

 

“PlayerBullet” Script

• set the public variable “speed” for the speed of the bullet
• In “Update()” method
  • get the bullet’s current position by using “transform.position”
  • computing the bullet’s new position = the change of position when we shoot the bullet
    • only need to change the “y” value
  • to smooth the shooting, use “Time.deltaTime”
  • Don’t forget to update the position into “transform.position”
• for the memory usage, destroy the bullets going outside the screen
  • when setting the screen range, only consider “y” value or “height”
  • “Camera.main.ViewPortToWorlPoint()”

 

Setting the speed in the inspector | Public Variable

Shoot a bullet

 

Making a Prefab

• Make the Bullet Prefab by dragging the bullet we configured in the Hierarchy window
  • this is the Bullet we will continuously instantiate

 

Empty GameObject

 

GameObject BulletPosition

GameObject BulletPosition

• Make 2 Empty GameObject to Create “BulletPosition”, where Bullets come out
  • Set the position of  “BulletPosition” on “Player” GameObject

 

Child Object

• Make “BulletPosition” as a ChildObject of “Player”
  • “BulletPosition” belongs to “Player”

 

“Player Control

• Set Public Variables to use those components in the script

 

Public Variable | Reference

 

Player Control

• In “Update()” method
  • Instantiate Bullet Prefab when “SpcaeBar” is pressed
  • set the initial position of a bullet after instantiating

 

Player Shooting | Destroying Bullets

 

UNITY TUTORIAL | PROJECT | SPACE SHOOTER |7. Shooting Shoots

UNITY TUTORIAL | PROJECT | SPACE SHOOTER |7. Shooting ShootsUNITY TUTORIAL | PROJECT | SPACE SHOOTER |7. Shooting Shoots

Creating “Spawn Point” as Child Object of “Player”

Instantiate(Object, position, Quaternion)

Using GameObjects in Script as Public

shooting logic

UNITY TUTORIAL | PROJECT | SPACE SHOOTER |2. The Player Game Object

Adding Player GameObject

Resetting the position of “Player” into (0, 0, 0)

Transform.Position set to (0, 0, 0)

RigidBody Added | Gravity Unactivated

Capsule Collider Added

Changing Collider Size

Changing the direction of Collider into Z-Axis for configuration

Changing the Radius and Height of Collider

Adding “Mesh Collider” | only one collider should be added

“Mesh Renderer” off to see “Mesh Collider”

Simplified “Mesh” added to “Mesh Collider”

“Particle” added as Child GameObject of  “Player”

“Particle” effect