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Projectile System

Source: client/engine/systems/SystemsFunctions/ProjectileSystem.cpp

Purpose: Update projectile positions and remove those leaving the play area.

Components used:

  • Transform
  • Projectile

Behavior​

  • Move projectile X position by projectile.speed * dt.
  • If the projectile leaves an expanded rectangle around the window (window_size_ ± 100px), mark it for removal (reg.KillEntity).

Main signature​

void ProjectileSystem(Eng::registry &reg, GameWorld &game_world,
    Eng::sparse_array<Com::Transform> &transforms,
    Eng::sparse_array<Com::Projectile> &projectiles);

Notes​

  • Collect entities to remove first, then call KillEntity to avoid invalidating zippers during iteration.