//constructor
public EnemyManager(Texture2D enemySprite, Rectangle enemytarget, Hive homeBase, int screenWidth, int screenHeight)
{
this.enemySprite = enemySprite;
target = enemytarget;
this.homeBase = homeBase;
waveManager = new WaveManager();
enemies = new List <Enemy>();
spawnPhase = false;
spawnRate = 30;
currentCD = 0;
maxWidth = screenWidth;
maxHeight = screenHeight;
rng = new Random();
}
//methods
/// <summary>
/// start spawnning the enemies
/// </summary>
public void Spawn()
{
//cooldown timer for spawning
if (currentCD > 0)
{
currentCD--;
}
else
{
//is it currently not between waves (is it time to spawn a wave in)
if (spawnPhase)
{
//does the wave currently still have enemies to spawn
if (waveManager.enemyStack.Count > 0)
{
//spawn the enemies at locations the text file says
int intSpawnRNG = rng.Next(30, 71);
double spawnRNG = (double)intSpawnRNG / 100;
int rngPos;
Rectangle spawnLocation;
switch (waveManager.enemyStack.Pop())
{
case 'T':
rngPos = (int)(maxWidth * spawnRNG);
spawnLocation = new Rectangle(rngPos, 0, 75, 75);
enemies.Add(new Enemy(enemySprite, spawnLocation, target, 'T'));
break;
case 'B':
rngPos = (int)(maxWidth * spawnRNG);
spawnLocation = new Rectangle(rngPos, maxHeight, 75, 75);
enemies.Add(new Enemy(enemySprite, spawnLocation, target, 'B'));
break;
case 'L':
rngPos = (int)(maxHeight * spawnRNG);
spawnLocation = new Rectangle(0, rngPos, 75, 75);
enemies.Add(new Enemy(enemySprite, spawnLocation, target, 'L'));
break;
case 'R':
rngPos = (int)(maxHeight * spawnRNG);
spawnLocation = new Rectangle(maxWidth, rngPos, 75, 75);
enemies.Add(new Enemy(enemySprite, spawnLocation, target, 'R'));
break;
default:
break;
}
}
else //no more enemies in this wave
{
spawnPhase = false;
}
//cooldown between each spawn
currentCD = spawnRate;
}
else
{
//are there no more enemies in the current wave
if (enemies.Count <= 0)
{
currentCD = waveCD; //wave cooldown
spawnPhase = true;
WaveManager.NextWave(); //prepares next wave
//debug
Console.WriteLine("next wave");
}
}
}
}