protected override void OnUpdate()
{
var deltaTime = Time.deltaTime;
var time = Time.time;
for (int i = 0; i < TurretProjectiles.Length; i++)
{
var transform = TurretProjectiles.Transforms[i];
var projectile = TurretProjectiles.Projectiles[i];
var despawnable = TurretProjectiles.Despawnables[i];
// // draw line for bullet trajectory
// GameObject linePrefab = Bootstrapper.PrefabManager.LineDrawer;
// GameObject line = GameObject.Instantiate(linePrefab, transform);
// var lineRenderer = line.GetComponent<LineRenderer>();
// lineRenderer.SetPosition(0, transform.position);
// lineRenderer.SetPosition(1, projectile.PreviousPosition);
ProjectileColisionData colisionData = CheckCollision(transform, projectile);
if (colisionData.Hit)
{
if (projectile.ProjectileType == EProjectileType.DirectImpact)
{
DirectImpactColision(colisionData, projectile);
}
else if (projectile.ProjectileType == EProjectileType.Explosive)
{
ExplosiveColision(colisionData, projectile);
}
else
{
// TODO: handle other projectile type colisions
Debug.Log("Unknown projectile type collided with a surface.");
}
// update
projectile.PreviousPosition = colisionData.HitPosition;
// force immediate despawn of the projectile
despawnable.ForceDespawn = true;
}
// update position
projectile.PreviousPosition = transform.position;
}
}
private static ProjectileColisionData CheckCollision(Transform transform, Projectile projectile)
{
Vector3 posCrt = transform.position;
Vector3 posPrev = projectile.PreviousPosition;
Vector3 toCrt = posCrt - posPrev;
ProjectileColisionData colisionData = new ProjectileColisionData();
RaycastHit raycastHit;
// TODO: maybe use Physics.SphereCast instead
colisionData.Hit = Physics.Raycast(posPrev, toCrt.normalized, out raycastHit,
maxDistance: toCrt.magnitude);
if (colisionData.Hit)
{
colisionData.HitPosition = raycastHit.point;
colisionData.HitObject = raycastHit.collider.gameObject;
}
return(colisionData);
}
private static void ExplosiveColision(ProjectileColisionData colisionData, Projectile projectile)
{
// spawn explosion effect
GameObject explosion = GameObject.Instantiate(Bootstrapper.PrefabManager.Explosion);
explosion.transform.rotation = Quaternion.LookRotation(UnityEngine.Random.onUnitSphere);
explosion.transform.position = colisionData.HitPosition;
// define damage
var explosiveProjectile = projectile.gameObject.GetComponent <ExplosiveProjectile>();
DamageData damageData = new DamageData()
{
DamageAmount = projectile.DamageOnImpact,
DamageRange = explosiveProjectile.DamageMaxRange,
DamageFalloff = explosiveProjectile.DamageFalloff,
HitPosition = colisionData.HitPosition,
FactionId = -1, // TODO: add faction
};
// query apply damage
var damageFalloff = projectile.gameObject.GetComponent <ExplosiveProjectile>().DamageFalloff;
DamageableSystem.EnqueueApplyDamage(damageData);
}
private static void DirectImpactColision(ProjectileColisionData colisionData, Projectile projectile)
{
// apply damage
// TODO: add faction
DamageableSystem.ApplyDamage(colisionData.HitObject, projectile.DamageOnImpact);
}
