/// <summary>
/// Constructor for pulling enemies from level map coordinator
/// </summary>
/// <param name="type"> Type of Enemy [Stationary = type from Egg / Alive = Following with a*] </param>
/// <param name="visionStandard"> determines how far away the enemy can "see" </param>
public Enemy(EnemyType type, Rectangle hitbox, Texture2D defaultSprite, int visionStandard)
{
hitpoints = 3;
verticalVelocity = 0;
horizontalVelocity = 0;
this.hitbox = hitbox;
Type = type;
this.defaultSprite = defaultSprite;
this.visionStandard = visionStandard;
UpdateEnemyVision();
// Starts the enemy as inactive and not being drawn.
isActive = false;
isDrawn = false;
isFacingRight = false;
bottomIntersects = false;
topIntersects = false;
canJump = true;
goingDown = false;
// Enemy is facing left
isFacingRight = false;
enemyState = EnemyState.IdleLeft;
walkingState = EnemyWalkingState.Waiting;
}
/// <summary>
/// Updates the Enemy Appropriately
/// </summary>
/// <param name="pM"></param>
public void UpdateEnemy(Player p1, Player p2, Vector2 target)
{
this.target = target;
previousPosition = position;
previousHitbox = hitbox;
previousEnemyState = enemyState;
previousWalkingState = walkingState;
position = new Vector2(X, Y);
if (previousPosition.Y < position.Y) //player is going downwards relative to last frame
{
goingDown = true;
}
else //the player is standing normally or going upwards
{
goingDown = false;
}
// Sets Collision Boxes
#region COLLISIONBOXES
if (horizontalVelocity > 0)
{
//X is right of player, Y is the same as player, width depends on horizontalVelocity, height is same as player
sideChecker = new Rectangle(X + hitbox.Width, Y + 10, Math.Abs(horizontalVelocity), hitbox.Height - 20);
}
//Facing left
else if (horizontalVelocity < 0)
{
//X is same as player (which is left edge), Y is the same as player
//width depends on horizontalVelocity, height is same as player
sideChecker = new Rectangle(X - Math.Abs(horizontalVelocity), Y + 10, Math.Abs(horizontalVelocity), hitbox.Height - 20);
}
else
{
if (isFacingRight)
{
sideChecker = new Rectangle(X + hitbox.Width, Y + 10, Math.Abs(horizontalVelocity), hitbox.Height - 20);
}
else
{
sideChecker = new Rectangle(X - Math.Abs(horizontalVelocity), Y + 10, Math.Abs(horizontalVelocity), hitbox.Height - 20);
}
}
//height is player height with vertical velocity added on (subtracting makes the height go "up" aka toward the ceiling)
if (verticalVelocity <= 0)
{
topChecker = new Rectangle(X + 10, Y - Math.Abs(verticalVelocity), hitbox.Width - 20, Math.Abs(verticalVelocity));
}
else
{
topChecker = new Rectangle(X + 10, Y, hitbox.Width - 20, 0);
}
bottomChecker = new Rectangle(X + 10, Y + hitbox.Height, hitbox.Width - 20, Math.Abs(verticalVelocity));
// Double check Figure out this condition
if (verticalVelocity == 0 && goingDown == true)
{
bottomChecker = new Rectangle(X + 10, Y + hitbox.Height, hitbox.Width - 20, 1);
}
#endregion COLLISIONBOXES
if (bottomIntersects)
{
canJump = true;
}
// Decides how the enemy will move
enemyState = DecideState(target);
#region FSM
switch (enemyState)
{
case EnemyState.IdleLeft:
isFacingRight = false;
FollowMovementLogic();
break;
case EnemyState.IdleRight:
isFacingRight = true;
FollowMovementLogic();
break;
case EnemyState.WalkLeft:
isFacingRight = false;
FollowMovementLogic();
break;
case EnemyState.WalkRight:
isFacingRight = true;
FollowMovementLogic();
break;
case EnemyState.JumpLeft:
isFacingRight = false;
FollowMovementLogic();
break;
case EnemyState.JumpRight:
isFacingRight = true;
FollowMovementLogic();
break;
case EnemyState.Fall:
isFacingRight = false;
FollowMovementLogic();
break;
}
#endregion FSM
}
