Projectiles

Projectile System Overview

All projectile types derive from the BP_MasterProjectile, which handles the core logic for damage, impact, and optional pooling for optimization.

🎯 Default Projectile Types Included:

Blueprint	Intended Use
BP_BallisticProjectile01	Auto-cannons (standard fast kinetic)
BP_BallisticProjectile02	Railguns (piercing, high-speed shots)
BP_PulseLaserProjectile	Laser turrets (energy beam pulses)
BP_DumbSmallRocket	Non-guided explosive rockets
BP_Missile01	Guided missile with tracking behavior

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🧠 Core Customization Info

⚙️ Inheritance & Structure

• All new projectiles must derive from BP_MasterProjectile to ensure compatibility with the system.

• All blueprints come fully commented with self-explanatory functions.

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💣 Explosive vs Ballistic Projectiles

Feature	Explosive	Ballistic
IsBallistic? Bool	❌ False	✅ True
Collision Behavior	Block necessary channels	Overlap only
Pooling Support	❌ Not pooled	✅ Fully pooled
Penetration System	❌ No	✅ Yes
On Hit Event	Triggers radial damage and VFX	Triggers direct hit logic and VFX
Uses SetLive	❌ No	✅ Yes (for pooling reset)

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✅ Checklist for Ballistic Projectiles (Pooled)

1. ✅ IsBallistic? = True

2. ✅ Sphere Collision set to Overlap only

3. ✅ Use SetLive on spawn (sets active state and resets visuals)

4. ✅ Configure projectile speed, lifespan, penetration logic

5. ✅ Customize VFX and impact sound

6. ✅ All logic happens in Impact Event (shown in screenshot)

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✅ Checklist for Explosive Projectiles

1. ✅ IsBallistic? = False

2. ✅ Sphere Collision should Block desired channels (like WorldStatic, Pawn, etc.)

3. ✅ Customize radial damage radius and effects

4. ✅ Impact event handles damage & VFX (same event)

5. ✅ Not pooled — standard actor lifecycle (spawn > destroy on hit)

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🔧 Custom Damage Systems And Penetration

All damage logic is inside the Impact Event.

• By default, uses engine-standard Apply Damage with support for damage types.

• If your game uses a custom interface for damage (e.g., BPI_YourCombatInterface), this is where you’ll need to hook it in.

• Penetration for Ballistic projectiles are calculated at the end of the event.

🧠 You can safely replace Apply Damage with your interface call (e.g., Interface → DealCustomDamage()), depending on your gameplay system.

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🔁 Pooling Support

Ballistic projectiles are designed for object pooling to drastically reduce runtime memory and actor destruction overhead.

• Make sure to call SetLive when activating ballistic projectiles from the pool.

• This resets lifespan, visuals, and prepares it for next use.

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🔉 VFX, SFX, and Trails

Each projectile has built-in settings for:

• ✅ Trail VFX

• ✅ Impact particles

• ✅ Looping flight sound or on-impact SFX

These are editable directly within the projectile blueprint. No code change needed — just swap the assets.

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🧪 Quick Test Tips

• Ballistic feels weird? Double-check collision is on Overlap only.

• Explosive not detonating? Make sure you're blocking something meaningful on the root Sphere.

• Pooling not working? Make sure SetLive is called and you're not destroying pooled actors on impact.

• No damage? Check if your target implements the correct BPI or is listening for damage events.