// Handles user input and acts upon the block.
// Only one block per user will be active at a given time.
private void CheckUserInput()
{
if (Input.GetKeyDown(up))
{
// try changing the position
transform.position += new Vector3(0, 1, 0);
if (isValidPos())
{
// valid position: commit changes
updateBlock();
}
else
{
// invalid position: roll back
transform.position -= new Vector3(0, 1, 0);
}
}
else if (Input.GetKeyDown(down))
{
transform.position += new Vector3(0, -1, 0);
if (isValidPos())
{
updateBlock();
}
else
{
transform.position -= new Vector3(0, -1, 0);
}
}
else if (Input.GetKeyDown(fastFall) || (Time.time - timeLastFall > Game.gameSpeed))
{
// second if condition ^ handles automatic falling
// try a new position
transform.position += new Vector3(fallDirection, 0, 0);
if (isValidPos())
{
// commit the new position
updateBlock();
}
else // not a valid position: a new block will spawn and the old one will be stuck
{
// revert change to position
transform.position -= new Vector3(fallDirection, 0, 0);
Game.DeleteFullCols();
// spawn next block
BlockSpawner spawner = Game.GetSpawner(transform.position.x).GetComponent <BlockSpawner>();
spawner.spawnNextBlock();
// disable the script
enabled = false;
}
timeLastFall = Time.time;
}
else if (Input.GetKeyDown(rotate) && canRotate)
{
if (restrictRotation)
// I, S and Z Blocks
{
if (transform.rotation.eulerAngles.z < 90)
{
transform.Rotate(0, 0, 90);
if (isValidPos())
{
updateBlock();
}
else
{
transform.Rotate(0, 0, -90);
}
}
else
{
transform.Rotate(0, 0, -90);
if (isValidPos())
{
updateBlock();
}
else
{
transform.Rotate(0, 0, 90);
}
}
}
else
// L, J, T blocks
{
transform.Rotate(0, 0, 90);
if (isValidPos())
{
updateBlock();
}
else
{
transform.Rotate(0, 0, -90);
}
}
}
}