/// <summary>
/// If the entity is simply colliding with terrain anywhere, it will raise an event.
/// </summary>
public void CheckSimpleTerrainCollision()
{
int[] q = GetNearbyTileIndexes();
foreach (int index in q)
{
if (index >= 0 && index <= GameWorld.TileArray.Length - 1 && GameWorld.TileArray[index].IsSolid == true)
{
if (CollRectangle.Intersects(GameWorld.TileArray[index].DrawRectangle))
{
CollidedWithTerrain(this, GameWorld.TileArray[index]);
break;
}
}
}
}
/// <summary>
/// Whether the entity is simply intersecting terrain.
/// </summary>
/// <returns></returns>
public bool IsTouchingTerrain()
{
int[] q = GetNearbyTileIndexes();
foreach (int quadrant in q)
{
if (quadrant >= 0 && quadrant <= GameWorld.TileArray.Length - 1 && GameWorld.TileArray[quadrant].IsSolid)
{
if (CollRectangle.Intersects(GameWorld.TileArray[quadrant].DrawRectangle))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// This will check for terrain collision if entity implements ICollidable.
/// </summary>
private void CheckTerrainCollision()
{
int[] q = GetNearbyTileIndexes();
//Solve Y collisions
MoveBy(0, Velocity.Y);
foreach (int quadrant in q)
{
if (quadrant >= 0 && quadrant < GameWorld.TileArray.Length)
{
Tile tile = GameWorld.TileArray[quadrant];
if (quadrant >= 0 && quadrant < GameWorld.TileArray.Length && GameWorld.WorldData.IsTopDown ? tile.IsSolidTopDown : tile.IsSolid)
{
Rectangle tileRect = tile.DrawRectangle;
if (CollRectangle.Intersects(tileRect))
{
if (Velocity.Y > 0)
{
if (tile.CurrentCollisionType == Tile.CollisionType.FromAbove)
{
// Do I know why I have to use the last position instead of the current? No. But does it work? Yes.
if (_positionInLastFrame.Y + CollRectangle.Height * 2 / 3 > tile.DrawRectangle.Y)
{
continue;
}
if (WantsToMoveDownPlatform)
{
continue;
}
}
CollidedWithTileBelow(this, tile);
CollidedWithTerrain(this, tile);
}
else if (tile.CurrentCollisionType == Tile.CollisionType.FromAbove)
{
continue;
}
else if (Velocity.Y < 0)
{
CollidedWithTileAbove(this, tile);
CollidedWithTerrain(this, tile);
}
}
}
}
}
//Solve X Collisions
MoveBy(Velocity.X, 0);
foreach (int quadrant in q)
{
if (quadrant >= 0 && quadrant < GameWorld.TileArray.Length)
{
Tile tile = GameWorld.TileArray[quadrant];
if (tile.CurrentCollisionType == Tile.CollisionType.FromAbove)
{
continue;
}
if (quadrant >= 0 && quadrant < GameWorld.TileArray.Length && GameWorld.WorldData.IsTopDown ? tile.IsSolidTopDown : tile.IsSolid)
{
Rectangle tileRect = tile.DrawRectangle;
if (CollRectangle.Intersects(tile.DrawRectangle))
{
if (Velocity.X > 0)
{
CollidedWithTileToRight(this, tile);
CollidedWithTerrain(this, tile);
}
else if (Velocity.X < 0)
{
CollidedWithTileToLeft(this, tile);
CollidedWithTerrain(this, tile);
}
}
}
}
}
// Check for interactables updates.
foreach (int quadrant in q)
{
Tile tile = GameWorld.GetTile(quadrant);
if (tile.GetDrawRectangle().Intersects(CollRectangle))
{
tile.OnEntityTouch(this);
}
}
}