/// <summary>
/// Initializes everything.
/// </summary>
void Start()
{
prevCameraPosition = MainCamera.transform.position;
TilesToRemove = new List <OSPObject>();
PlacementHistory = new List <OSPRandomHistory>();
ParallaxPools = new List <OSPPool>();
// Grab the camera's bounds
CamBounds = MainCamera.OrthographicBounds();
// Loops through the parallax layers and assigns an ID to each one, finds the maximum Z distance from the camera,
// and sets the object pool amount.
// This loop is mainly to determine the maximum Z distance because our parallax speed doe each layer depends on it.
for (int i = 0; i < ParallaxObjects.Count; ++i)
{
var obj = ParallaxObjects[i];
obj.ObjectID = i;
if (GetDistance(obj.transform.position.z, MainCamera.transform.position.z) > maxZ)
{
maxZ = obj.transform.position.z - MainCamera.transform.position.z;
}
obj.DeterminePoolAmount(CamBounds);
}
// Store the previous random state so we can go back to it after setting our seed in case your game has another seeded random state.
Random.State oldState = Random.state;
if (UseSeedForRandomization)
{
Random.InitState(RandomSeed);
}
// Loop through the parallax objects again
foreach (var obj in ParallaxObjects)
{
// Set the parallax speed for the layer
obj.ParallaxScalar = GetParallaxScalar(obj);
// If we're randomizing anything, we create a new history object and initialize the offset values
if (obj.RandomizeHorizontalDistance || obj.RandomizeVerticalDistance)
{
var newHist = new OSPRandomHistory
{
ID = obj.ObjectID,
MaxHistorySize = obj.MaxPlacementHistorySize,
UseRandomX = obj.RandomizeHorizontalDistance,
UseRandomY = obj.RandomizeVerticalDistance,
UseRandomHorizontalY = obj.RandomizeHorizontalYAxis,
UseRandomVerticalX = obj.RandomizeVerticalXAxis,
MinXOffset = obj.HorizontalDistanceMin,
MaxXOffset = obj.HorizontalDistanceMax,
MinYOffset = obj.VerticalDistanceMin,
MaxYOffset = obj.VerticalDistanceMax,
MinVerticalXOffset = obj.VerticalXMin,
MaxVerticalXOffset = obj.VerticalXMax,
MinHorizontalYOffset = obj.HorizontalYMin,
MaxHorizontalYOffset = obj.HorizontalYMax
};
// Only initialize the offset lists if we're actually storing history
if (obj.UseRandomHistory)
{
newHist.InitializeOffsetHistory();
}
PlacementHistory.Add(newHist);
}
// Create object pools for each layer and add them to the pool list
if (obj.AutoTileX || obj.AutoTileY)
{
var pool = new OSPPool(obj);
pool.CanGrow = false;
ParallaxPools.Add(pool);
}
}
// Restore the original random state
Random.state = oldState;
// Remove the pooled objects from the parallax list since we don't need to perform the same functionality on tiled and non-tiled objects
foreach (var pool in ParallaxPools)
{
ParallaxObjects.Remove(pool.PooledObject);
}
}
/// <summary>
/// Creates a new tile in the given direction.
/// </summary>
/// <param name="tile">The parallax tile object.</param>
/// <param name="direction">The direction we're creating a new tile in.</param>
/// <param name="historyList">The history list for that layer.</param>
void CreateNewTile(OSPObject tile, TileDirection direction, OSPRandomHistory historyList)
{
// Grab the object pool for this layer
OSPPool pool = ParallaxPools.SingleOrDefault(p => p.ObjectID == tile.ObjectID);
// Sometimes, a large image will have a slight gap that shows up on camera movement. This isn't the best fix, but it works.
float gapOffset = 0.05f;
// Figure out the scale of the sprite so we can figure out how far to move it in order to tile
float spriteScaleX = tile.transform.localScale.x;
if (tile.transform.parent != null)
{
spriteScaleX *= tile.transform.parent.localScale.x;
}
float spriteScaleY = tile.transform.localScale.y;
if (tile.transform.parent != null)
{
spriteScaleY *= tile.transform.parent.localScale.y;
}
if (direction == TileDirection.LEFT || direction == TileDirection.RIGHT)
{
#region Left/Right Tiles
float posOffset = (tile.SpriteWidth * (direction == TileDirection.LEFT ? -1 : 1) * spriteScaleX);
gapOffset *= direction == TileDirection.LEFT ? 1 : -1;
Vector3 newPosition = new Vector3(
tile.transform.position.x + posOffset + gapOffset,
tile.transform.position.y,
tile.transform.position.z);
if (direction == TileDirection.RIGHT)
{
// If we're randomizing the horizontal distance, get the offset and add it to the position
if (tile.RandomizeHorizontalDistance)
{
newPosition.x += historyList.GetXOffsetForColumn(tile.col, tile.UseRandomHistory);
// If we're randomizing the Y offset, get the offset and add it to the position
if (tile.RandomizeHorizontalYAxis)
{
newPosition.y += historyList.GetYOffsetForColumn(tile.col, tile.UseRandomHistory);
}
}
else
{
newPosition.x += tile.HorizontalDistance;
}
}
else if (direction == TileDirection.LEFT)
{
// If we're randomizing the horizontal distance, get the offset and add it to the position
if (tile.RandomizeHorizontalDistance)
{
newPosition.x -= historyList.GetXOffsetForColumn(tile.col - 1, tile.UseRandomHistory);
// If we're randomizing the Y offset, get the offset and add it to the position
if (tile.RandomizeHorizontalYAxis)
{
newPosition.y += historyList.GetYOffsetForColumn(tile.col - 1, tile.UseRandomHistory);
}
}
else
{
newPosition.x -= tile.HorizontalDistance;
}
}
// Get the new tile from the object pool. Abandon ship if it couldn't get a tile.
var newTile = pool.GetPooledObject();
if (newTile == null)
{
return;
}
newTile.transform.position = newPosition;
newTile.transform.rotation = tile.transform.rotation;
// Set the new column for this tile
if (direction == TileDirection.RIGHT)
{
newTile.row = tile.row;
newTile.col = tile.col + 1;
}
else
{
newTile.row = tile.row;
newTile.col = tile.col - 1;
}
// Set the left, right, top, and bottom tiles that connect to this one
pool.SetSiblings(newTile);
// Now that we're in position, set this tile active
newTile.gameObject.SetActive(true);
#endregion
}
else
{
#region Up/Down Tiles
float posOffset = (tile.SpriteHeight * (direction == TileDirection.DOWN ? -1 : 1) * spriteScaleY);
gapOffset *= direction == TileDirection.DOWN ? 1 : -1;
Vector3 newPosition = new Vector3(
tile.transform.position.x,
tile.transform.position.y + posOffset + gapOffset,
tile.transform.position.z);
if (direction == TileDirection.UP)
{
// If we're randomizing the vertical distance, get the offset and add it to the position
if (tile.RandomizeVerticalDistance)
{
newPosition.y += historyList.GetYOffsetForRow(tile.row, tile.UseRandomHistory);
// If we're randomizing the X offset, get the offset and add it to the position
if (tile.RandomizeVerticalXAxis)
{
newPosition.x += historyList.GetXOffsetForRow(tile.row, tile.UseRandomHistory);
}
}
else
{
newPosition.y += tile.VerticalDistance;
}
}
else if (direction == TileDirection.DOWN)
{
// If we're randomizing the vertical distance, get the offset and add it to the position
if (tile.RandomizeVerticalDistance)
{
newPosition.y -= historyList.GetYOffsetForRow(tile.row - 1, tile.UseRandomHistory);
// If we're randomizing the X offset, get the offset and add it to the position
if (tile.RandomizeVerticalXAxis)
{
newPosition.x += historyList.GetXOffsetForRow(tile.row - 1, tile.UseRandomHistory);
}
}
else
{
newPosition.y -= tile.VerticalDistance;
}
}
// Get the new tile from the object pool. Abandon ship if it couldn't get a tile.
var newTile = pool.GetPooledObject();
if (newTile == null)
{
return;
}
newTile.transform.position = newPosition;
newTile.transform.rotation = tile.transform.rotation;
// Set the new row for this tile
if (direction == TileDirection.DOWN)
{
newTile.row = tile.row + 1;
newTile.col = tile.col;
}
else
{
newTile.row = tile.row - 1;
newTile.col = tile.col;
}
// Set the left, right, top, and bottom tiles that connect to this one
pool.SetSiblings(newTile);
// Now that we're in position, set this tile active
newTile.gameObject.SetActive(true);
#endregion
}
}