void SpawnEnemy(Vector3 spawn, EnemySpawnSide side = EnemySpawnSide.Right)
{
List <Vector3> enemyNav = new List <Vector3> ();
int rangeVal = Random.Range(0, 200);
if (rangeVal % 2 == 0)
{
AddTrianglePattern(spawn, enemyNav, spread, side);
}
else
{
AddSquarePattern(spawn, enemyNav, spread, side);
}
Destroy(Instantiate(markerPrefab, enemySpawnPoint, Quaternion.identity), markerLifetime);
foreach (Vector3 loc in enemyNav)
{
Destroy(Instantiate(markerPrefab, loc, Quaternion.identity), markerLifetime);
}
GameObject enemyInstance = Instantiate(enemyPrefab, enemySpawnPoint, Quaternion.identity) as GameObject;
EnemyNavigator eiNav = enemyInstance.GetComponent <EnemyNavigator> ();
eiNav.SetSpeed(enemySpeed);
eiNav.PopulateDirectionList(enemyNav);
eiNav.SetMoveDelay(enemyMoveDelay);
}
void CalculateSpawnPos(EnemySpawnSide side = EnemySpawnSide.Right)
{
switch (side)
{
case EnemySpawnSide.Right:
enemySpawnPoint = new Vector3(rightClearX - 2, playerTarget.position.y + spread, 5);
break;
default:
// this will cover Left and Top for right now
enemySpawnPoint = new Vector3(leftClearX + 2, playerTarget.position.y + spread, 5);
break;
}
}
IEnumerator SpawnMultiple(int quantity)
{
EnemySpawnSide side = RandomSideLR();
CalculateSpawnPos(side);
GrabPlayerLocation();
Vector3 waveLocation = playerLocation;
for (int i = 0; i < quantity; i++)
{
SpawnEnemy(OffsetSpawnPos(waveLocation, i), side);
yield return(new WaitForSeconds(spawnDelay));
}
}
void AddTrianglePattern(Vector3 spawn, List <Vector3> enemyNav, float spread, EnemySpawnSide side = EnemySpawnSide.Right)
{
// multiply by -1 to invert values for left
int invert = 1;
if (side == EnemySpawnSide.Left)
{
invert = -1;
}
enemyNav.Add(spawn + new Vector3(-spread * invert, spread, 0)); // point 1
enemyNav.Add(spawn + new Vector3(0, spread * 2, 0)); // point 2 (top)
enemyNav.Add(spawn + new Vector3(spread * invert, spread, 0)); // point 3
enemyNav.Add(DestinationCalc(spawn, side));
}
Vector3 DestinationCalc(Vector3 spawn, EnemySpawnSide side = EnemySpawnSide.Right)
{
switch (side)
{
case EnemySpawnSide.Left:
return(new Vector3(rightClearX, spawn.y + spread, 0)); // destination
break;
default:
return(new Vector3(leftClearX, spawn.y + spread, 0)); // destination
break;
}
}