public virtual void HandleCollisions(CVGameTime gameTime)
{
if (this.WorldPosition.Y > Game.iScreenModelWidth && IsDying == false)
{
Die(gameTime);
}
Rectangle actorbounds = this.BoundingBox();
bool wasonground = this.IsOnGround;
// get nearest tile below player.
this.IsOnGround = false;
int leftTile = (int)Math.Floor((float)actorbounds.Left / CurrentStage.TileWidth);
int rightTile = (int)Math.Ceiling(((float)actorbounds.Right / CurrentStage.TileWidth)) - 1;
int topTile = (int)Math.Floor((float)actorbounds.Top / CurrentStage.TileHeight);
int bottomTile = (int)Math.Ceiling(((float)actorbounds.Bottom / CurrentStage.TileHeight)) - 1;
// For each potentially colliding platform tile,
for (int y = topTile; y <= bottomTile; ++y)
{
for (int x = leftTile; x <= rightTile; ++x)
{
StageTile stageTile = CurrentStage.getStageTileByGridPosition(x, y);
if (stageTile != null)
{
if (stageTile.IsImpassable())
{
Rectangle tilebounds = CurrentStage.getTileBoundsByGridPosition(x, y);
Vector2 depth = RectangleExtensions.GetIntersectionDepth(actorbounds, tilebounds);
if (actorbounds.Intersects(tilebounds))
{
WorldPosition = new Vector2(WorldPosition.X + depth.X, WorldPosition.Y);
actorbounds = this.BoundingBox();
}
}
else if (stageTile.IsPlatform() && y == bottomTile)
{
List <Platform> tileboundsList = CurrentStage.getTilePlatformBoundsByGridPosition(x, bottomTile);
foreach (Platform platformbounds in tileboundsList)
{
Rectangle tilebounds = platformbounds.PlatformBounds;
Vector2 depth = RectangleExtensions.GetIntersectionDepth(actorbounds, tilebounds);
if (this.PreviousBottom <= tilebounds.Top && Velocity.Y >= 0 && actorbounds.Intersects(tilebounds))
//if (Velocity.Y >= 0 && (depth.Y < 0)) // || this.IgnoreNextPlatform))
{
this.IsOnGround = true;
this.JumpInProgress = false;
//this.Velocity.X = 0f;
this.WorldPosition.Y += depth.Y;
// perform further collisions with the new bounds
actorbounds = this.BoundingBox();
}
}
}
}
}
}
if (wasonground && !IsOnGround)
{
Velocity.Y = 0;
}
this.PreviousBottom = actorbounds.Bottom;
}
public override void Move(CVGameTime gameTime)
{
Vector2 proposedPosition;
if (Velocity.X > 0)
{
proposedPosition = new Vector2(WorldPosition.X + BoundingBox().Width * 0.9f, WorldPosition.Y);
}
else if (Velocity.X < 0)
{
proposedPosition = new Vector2(WorldPosition.X - BoundingBox().Width * 0.9f, WorldPosition.Y);
}
else
{
proposedPosition = WorldPosition;
}
// simulate gravity to determine if proposed position would collide with platform tile or not.
// otherwise
proposedPosition.Y += 1;
Rectangle proposedbounds = this.BoundingBox(proposedPosition);
bool bChangeDirection = false;
bool bWouldBeOnGround = false;
int leftTile = (int)Math.Floor((float)proposedbounds.Left / CurrentStage.TileWidth);
int rightTile = (int)Math.Ceiling(((float)proposedbounds.Right / CurrentStage.TileWidth)) - 1;
int topTile = (int)Math.Floor((float)proposedbounds.Top / CurrentStage.TileHeight);
int bottomTile = (int)Math.Ceiling(((float)proposedbounds.Bottom / CurrentStage.TileHeight)) - 1;
// For each potentially colliding platform tile,
for (int y = topTile; y <= bottomTile; ++y)
{
for (int x = leftTile; x <= rightTile; ++x)
{
StageTile stageTile = CurrentStage.getStageTileByGridPosition(x, y);
if (stageTile != null)
{
if (stageTile.IsImpassable())
{
// bump into wall- reverse direction
Rectangle tilebounds = CurrentStage.getTileBoundsByGridPosition(x, y);
if (proposedbounds.Intersects(tilebounds))
{
bChangeDirection = true;
}
}
if (stageTile.IsPlatform() && y == bottomTile)
{
List <Platform> tileboundsList = CurrentStage.getTilePlatformBoundsByGridPosition(x, bottomTile);
foreach (Platform platformbounds in tileboundsList)
{
Rectangle tilebounds = platformbounds.PlatformBounds;
if (proposedbounds.Bottom >= tilebounds.Top && proposedbounds.Intersects(tilebounds))
{
bWouldBeOnGround = true;
}
}
}
}
}
}
if (bChangeDirection)
{
ChangeDirection();
}
else if (bWouldBeOnGround == false)
{
ChangeDirection();
}
else if (this.direction == Player.PlayerDirection.Left)
{
Velocity.X = -EnemyMoveSpeed;
}
else if (this.direction == Player.PlayerDirection.Right)
{
Velocity.X = EnemyMoveSpeed;
}
}
