// =============================================================================================================
/// <summary>
/// It will look for anything that is near.
/// </summary>
private void LookForNearestEnemy()
{
var possibleHits = new Collider[20];
var nearestDist = 999f;
var size = Physics.OverlapSphereNonAlloc(shootingTower.position,
buildingMain.GetPropType.defenseRadiusDistance, possibleHits, layerToSearchFor);
for (var i = 0; i < size; i++)
{
if (buildingMain.IsItAlly)
{
if (possibleHits[i].CompareTag(GameTags.TeamBlue))
{
continue;
}
}
else
{
if (possibleHits[i].CompareTag(GameTags.TeamRed))
{
continue;
}
}
var dist = Vector3.Distance(shootingTower.position, possibleHits[i].transform.position);
if (nearestDist > dist)
{
nearestDist = dist;
myTarget = possibleHits[i].GetComponent <LiveObject>();
}
}
}
// =============================================================================================================
/// <summary>
/// It will look for anything allied building that is near, while walking towards the friendly flag to defend.
/// </summary>
private void LookForNearestFriendlyBuilding()
{
var possibleHits = new Collider[20];
var nearestDist = 999f;
var size = Physics.OverlapSphereNonAlloc(myTransform.position, checkForEnemyRadius,
possibleHits, layerToSearchForDef);
for (var i = 0; i < size; i++)
{
if (IsAlly)
{
if (possibleHits[i].CompareTag(GameTags.TeamRed))
{
continue;
}
}
else
{
if (possibleHits[i].CompareTag(GameTags.TeamBlue))
{
continue;
}
}
var dist = Vector3.Distance(myTransform.position, possibleHits[i].transform.position);
if (nearestDist > dist)
{
nearestDist = dist;
myNearestTarget = possibleHits[i].GetComponent <LiveObject>();
SetDestination(myNearestTarget.GetPosition);
isInCombat = false;
}
}
}
// =============================================================================================================
/// <summary>
/// Rotates to target and shoot when possible
/// </summary>
private void HandleTarget()
{
if (!buildingMain.IsEnabled)
{
return;
}
if (myTarget == null)
{
currentTimerToSearch -= Time.deltaTime;
if (currentTimerToSearch <= 0)
{
currentTimerToSearch = timerToSearchForTarget;
LookForNearestEnemy();
}
return;
}
//Check if target is still alive, I will do this so the target will have time to play death animation
if (myTarget.GetMyHealth <= 0)
{
myTarget = null;
return;
}
//Check if the target is still in the minimum distance
var dist = Vector3.Distance(shootingTower.position, myTarget.transform.position);
if (dist > buildingMain.GetPropType.defenseRadiusDistance)
{
myTarget = null;
return;
}
//Make visual
if (visualToRotate != null)
{
// visualToRotate.Rotate(0, Time.deltaTime * 10, 0);
var dir = myTarget.transform.position - visualToRotate.position;
dir.y = 0;
var rot = Quaternion.LookRotation(dir);
visualToRotate.rotation = Quaternion.Slerp(visualToRotate.rotation, rot, Time.deltaTime * 10);
}
//Rotate to target (THIS IS FOR AIM) - so pick an empty game object just as aim object
var direction = myTarget.transform.position - shootingTower.position;
// direction.y = 0;
var rot2 = Quaternion.LookRotation(direction);
shootingTower.rotation = Quaternion.Slerp(shootingTower.rotation, rot2, Time.deltaTime * 10);
//Shoot
currentTimerToShoot -= Time.deltaTime;
if (currentTimerToShoot <= 0)
{
currentTimerToShoot = buildingMain.GetPropType.defenseAttackRate;
VfxManager.Instance.CastProjectile(projectileToShoot, shootingTower.position, shootingTower.rotation,
buildingMain.IsItAlly, buildingMain.GetPropType.defenseDamage);
}
}
// =============================================================================================================
/// <summary>
/// Attack enemy in case still exists and it is close.
/// If it is in the same place for too long, make it move again.
/// We don't call SetDestination from NavMesh in all frames, to not waste performance.
/// </summary>
private void HandleCombat()
{
if (!IsActivated)
{
return;
}
//Attack wait timer is always on even if you don't have a target
atkWaitTimer -= Time.deltaTime;
if (myNearestTarget != null && isInCombat)
{
if (myNearestTarget.GetMyHealth <= 0)
{
myNearestTarget = null;
return;
}
targetDistance = Vector3.Distance(myTransform.position, myNearestTarget.GetPosition);
if (targetDistance <= unitData.atkDistance || startedToShoot)
{
//Rotate to target
var direction = myNearestTarget.GetPosition - myTransform.position;
direction.y = 0;
var rot = Quaternion.LookRotation(direction);
myTransform.rotation = Quaternion.Slerp(myTransform.rotation, rot, Time.deltaTime * 10);
//Make unit to force stop
navMeshAgent.stoppingDistance = 999;
//Start attacking
if (atkWaitTimer <= 0)
{
atkWaitTimer = unitData.atkSpeed;
myAnimator.SetTrigger(AnimAttack);
audioAtk.Play();
if (!isMelee)
{
startedToShoot = true;
}
}
}
else
{
if (myCurrentVelocity < idleMinimumSpeed)
{
standingTimer += Time.deltaTime;
if (standingTimer > 1)
{
standingTimer = 0;
SetDestination(myNearestTarget.GetPosition);
}
}
}
}
}
// =============================================================================================================
/// <summary>
/// Called when the attack animation is suppose to cast something.
/// </summary>
public void AttackAnimationCast()
{
if (myNearestTarget != null)
{
//Check if target is still alive, I do this so the target will have time to play death animation
if (myNearestTarget.GetMyHealth <= 0)
{
myNearestTarget = null;
return;
}
VfxManager.Instance.CastProjectile(rangedVfxSpawnId, myTransform.position, myTransform.rotation,
IsAlly, unitData.damage);
}
}
// =============================================================================================================
/// <summary>
/// Called when the attack animation is suppose to hit something.
/// </summary>
public void AttackAnimationHit()
{
if (myNearestTarget != null)
{
//Check if target is still alive, I do this so the target will have time to play death animation
if (myNearestTarget.GetMyHealth <= 0)
{
myNearestTarget = null;
return;
}
VfxManager.Instance.CallVFx(1, weaponPosition.position, Quaternion.identity);
myNearestTarget.TakeDamage(unitData.damage);
}
}
// =============================================================================================================
/// <summary>
/// Change if this unit will attack or defend. Only works for player units.
/// </summary>
/// <param name="toggle"></param>
private void OnAttackMode(bool toggle)
{
//This should work only for player units.
if (!IsAlly)
{
return;
}
isAttacking = toggle;
//Reset if we were attacking or pursuing something.
myNearestTarget = null;
SetDestination(isAttacking ? myAttackTarget.position : myDefendTarget.position);
}
