/// <summary>
/// Checks for relevant collisions between sprites and calls the appropriate methods to act on them
/// </summary>
public static void CheckCollisions()
{
List<Collision> collisions = new List<Collision>();
foreach (Item item in ItemManager.levelItems)
{
foreach (Player player in PlayerManager.players)
{
Collision c = new Collision(item, player);
if (c.isColliding)
{
collisions.Add(c);
}
}
}
foreach (Collision c in collisions)
{
ItemManager.Collect(c.prop, c.actor as Item);
}
foreach (Player player in PlayerManager.players)
{
int playerBlockX = (int)Math.Floor(player.position.X / Block.WIDTH);
int playerBlockY = (int)Math.Floor(player.position.Y / Block.HEIGHT);
foreach (Block block in Level.GetInstance().MapSection(playerBlockY, playerBlockY + 1, playerBlockX, playerBlockX + 1))
//foreach (Block block in game.getLevel().getMapSection(0, 100, 0, 100))
{
Collision c = new Collision(block, player);
if (c.isColliding)
{
block.Collide(c);
}
}
}
}
/// <summary>
/// Handles a collision with the block
/// </summary>
/// <param name="collision">Collision to handle</param>
public void Collide(Collision collision)
{
if (collision.isColliding)
{
if (onStep)
{
if (collision.isOverlapping)
{
applyEffects(collision.prop);
isBeingSteppedOn = true;
}
else
{
isBeingSteppedOn = false;
}
}
else
{
applyEffects(collision.prop);
}
//determines passibility
Sprite prop = collision.prop;
// if the passability condition is met, dont check passability
if (passabilityCondition != null && !passabilityCondition.CheckCondition())
{
for (int edge = RIGHT; edge <= TOP; edge++)
{
if (passability[INSIDE, edge] != PASSABLE && collision.edges[edge] == Collision.INTERNAL_COLLISION)
{
if (edge == RIGHT || edge == LEFT)
{
prop.position.X = prop.oldPosition.X;
}
if (edge == BOTTOM || edge == TOP)
{
prop.position.Y = prop.oldPosition.Y;
}
}
if (passability[OUTSIDE, edge] != PASSABLE && collision.edges[edge] == Collision.EXTERNAL_COLLISION)
{
if (edge == RIGHT || edge == LEFT)
{
prop.position.X = prop.oldPosition.X;
}
if (edge == BOTTOM || edge == TOP)
{
prop.position.Y = prop.oldPosition.Y;
}
}
}
}
}
}
public void Update(float elapsedTime)
{
if (Vector2.Distance(enemy.initialPosition, enemy.chasing.position)
> enemy.wanderRadius
&& Vector2.Distance(enemy.position, enemy.chasing.position)
> enemy.sightRadius)
{
enemy.enemyState = new RelaxState(enemy, 0);
}
Collision c = new Collision(enemy, enemy.chasing);
if (c.isColliding)
{
foreach (Effect effect in enemy.effects)
{
effect.Apply(enemy.chasing);
}
enemy.enemyState = new RelaxState(enemy, Enemy.RELAX_TIME_ON_HIT);
}
enemy.chaseAI.Update(elapsedTime, enemy);
}