//pg. 268
public static void AddComputerTerminal()
{
int startX = rand.Next(2, TileMap.MapWidth - 2);
int startY = rand.Next(0, TileMap.MapHeight - 2);
Vector2 tileLocation = new Vector2(startX, startY);
if ((TerminalInSquare(tileLocation) != null) ||
(TileMap.IsWallTile(tileLocation)))
{
return;
}
if (Vector2.Distance(
TileMap.GetSquareCenter(startX, startY),
Player.BaseSprite.WorldCenter) < minDistanceFromPlayer)
{
return;
}
List <Vector2> path =
PathFinder.FindPath(
new Vector2(startX, startY),
TileMap.GetSquareAtPixel(
Player.BaseSprite.WorldCenter));
if (path != null)
{
Rectangle squareRect =
TileMap.SquareWorldRectangle(startX, startY);
Sprite activeSprite = new Sprite(
new Vector2(squareRect.X, squareRect.Y),
texture,
initialActiveFrame,
Vector2.Zero);
for (int x = 1; x < 3; x++)
{
activeSprite.AddFrame(
new Rectangle(
initialActiveFrame.X + (x *
initialActiveFrame.Width),
initialActiveFrame.Y,
initialActiveFrame.Width,
initialActiveFrame.Height));
}
activeSprite.CollisionRadius = 15;
Sprite disabledSprite = new Sprite(
new Vector2(squareRect.X, squareRect.Y),
texture,
initialDisabledFrame,
Vector2.Zero);
ComputerTerminal terminal = new ComputerTerminal(
activeSprite,
disabledSprite,
new Vector2(startX, startY));
float timerOffset = (float)rand.Next(1, 100);
terminal.LastSpawnCounter = timerOffset / 100f;
computerTerminals.Add(terminal);
activeCount++;
}
}
private bool reachedTargetSquare()
{
return(
Vector2.Distance(
EnemyBase.WorldCenter,
TileMap.GetSquareCenter(currentTargetSquare))
<= 2);
}
//pg. 276
#region AI Methods
private Vector2 determineMoveDirection()
{
if (reachedTargetSquare())
{
currentTargetSquare = getNewTargetSquare();
}
Vector2 squareCenter = TileMap.GetSquareCenter(
currentTargetSquare);
return(squareCenter - EnemyBase.WorldCenter);
}