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Chase & Attack

This part details how to set up both Ground Projectile Attacks and Aerial Projectile Attacks for the Bull Boss using the Boss AI Toolkit in Unity. It covers ability configuration, animation bindings, custom projectile prefab setup, timing logic, and flying point parameters.

1. Initial Ability & Spawn Point Setup

Configure the core Projectile Attack parameters inside the Enemy Ability System and set up the origin point for projectile instantiation.

Step 1.1: Projectile Spawn Point Creation

  1. Right-click in the Hierarchy and select Create Empty.
  2. Name the object Projectile Spawn Point.
  3. Position the object near the boss's hand or spine (where projectiles should originate).

Step 1.2: Core Ability Configuration

  1. Select the Bull Boss GameObject in the scene hierarchy.
  2. Expand the Enemy Ability System component.
  3. Set previous ability probabilities (e.g., Throw Weapon) to 0% and click Add Ability Entry to Group.
  4. Set Ability Type to Projectile Attack.
  5. Set Projectile Attack Probability to 100% for isolated testing.
  6. Configure timing and targeting settings:
  7. Look Mode: Target
  8. Powerup Animation Duration: 3 seconds
  9. Projectile Throw Animation Duration: 3 seconds
  10. Look At Target While Spawning: Checked
  11. Projectile Spawn Delay: 1 second
  12. Initial Projectile Move Delay: 3 seconds
  13. Parent Spawn Projectile: Checked (ensures the projectile rotates with the boss before launching).
  14. Idle Delay: 1 second
  15. Assign the Projectile Spawn Point GameObject to the Spawn Point field.

2. Animation Setup

Import and bind the power-up charge animation and projectile release animation via the Animation Setup Tool.

Steps

  1. Open the Animation Setup Tool on the Bull Boss.
  2. Locate the animations in the project folder (Boss AI Toolkit -> Animations):
  3. Powerup Animation (power up)
  4. Spellcast / Throw Animation (projectile throw)
  5. Click Add Animation and assign both clips:
  6. Set parameter name for the powerup clip to Power Up.
  7. Set parameter name for the throw clip to Projectile Throw.
  8. Click Add to Animator.
  9. Select Bull Boss and set:
  10. Powerup Animation: Power Up
  11. Projectile Throw Animation: Projectile Throw

3. Projectile Prefab Configuration

Create a custom projectile asset containing physics colliders, trajectory scripts, team detection, and damage hitboxes.

Step 3.1: Constructing the GameObject Structure

  1. Search for VFX Projectile 01 in the Project tab and drag it into the scene.
  2. Unpack the prefab completely and rename/nest it under an empty parent named Projectile.
  3. Unparent Projectile to place it at the scene root.

Step 3.2: Component & Physics Setup

Select the root Projectile object and add the following three components: 1. Sphere Collider: * Adjust radius size to fit the visual effect. * Check Is Trigger. 2. Projectile Component: * Moving Delay: 0. * Move Speed: 10. * Rotation Mode: Face Moving Direction. * Unparent On Move: Checked (detaches projectile from boss transform upon release). * Offset From Target Position: Checked. * Min / Max Offset: X=0, Y=1, Z=0. 3. Team Member Component: * Team Name: Set to match the boss's team (e.g., Team2). * My Body Part Target: Drag Projectile into this slot. 4. Hitbox Component: * Owner: Drag Projectile into this slot. * Compare Enemy: Checked. * Script Team Member: Drag the attached Team Member component here. * Activation Mode: Auto Activate On Start. * Activation Delay: 1 second. * Deactivate Hitbox On Hit: Checked. * Deactivate Hitbox After Time: Checked (5 seconds lifetime).

  1. Drag the configured Projectile object into your Prefabs folder to create a reusable asset.
  2. Delete the instance from the Hierarchy.
  3. Select Bull Boss and drag the new Projectile prefab into the Projectile Prefab field under ability settings.

4. Multi-Projectile Cycles & Firing Modes

Configure how multiple projectiles are spawned and cycled during an attack sequence.

Steps

Set Projectile Count to 3. Choose one of the following cycle modes based on desired behavior:

Firing Cycle Modes Comparison

Cycle Mode Description Typical Settings
Restart Cycle Plays the full Powerup and Throw animation sequence individually for each spawned projectile. Delay range: 0.1 to 0.3 seconds.
Ignore Cycle Restart Plays the charge sequence once, then launches all projectiles sequentially within the same continuous cycle. Projectiles Delay: 1 second between launches.

5. Aerial Projectile Attack Setup

Convert the ground attack into an aerial projectile attack where the boss leaps into the air before firing.

Steps

  1. Right-click in Hierarchy -> Create Empty and name it Fly Point.
  2. Position Fly Point in the air.
  3. Select Bull Boss and navigate to the Projectile Attack settings:
  4. Check Fly To Point.
  5. Fly Point: Drag and drop the Fly Point GameObject.
  6. Fly Speed: Set to 3.
  7. Stay In Air Post Shoot: Set to 2 seconds (duration boss hovers after completing all projectile cycles before landing).
  8. Return Animation: Set to Idle.

6. Verification Checklist

Before running tests in Play Mode, verify all parameters against this list:

  • [ ] Spawn Point Assigned: Projectile Spawn Point is linked to the ability.
  • [ ] Unparent On Move: Enabled on the Projectile component so launched projectiles detach from the boss.
  • [ ] Team Name Match: Team Member string on the projectile matches the boss (Team2).
  • [ ] Hitbox Setup: Compare Enemy is enabled and linked to the projectile's Team Member script.
  • [ ] Aerial Fly Point: Fly To Point is checked and assigned to a valid elevated target point (if setting up aerial attacks).