void UpdateDownwardsForces()
{
if (WaterGrid != null)
{
foreach (var Origin in DownwardsRaycastOrigins)
{
Ray DownwardsRay = new Ray(Origin.transform.position, new Vector3(0.0f, -1.0f, 0.0f));
var waterBitMask = 1 << 4;
if (Physics.Raycast(DownwardsRay, out raycastResult, DefaultDistanceFromWater, waterBitMask))
{
GameObject obj = raycastResult.collider.gameObject;
if (MassSpringSystem.IsMassUnit(obj.tag))
{
Vector3 p = obj.transform.position - WaterGrid.GetUnitOffset();
float pressure = SimulatedPressure * Origin.Force;
if (Body != null)
{
pressure *= Mathf.Clamp(Body.mass / MaxMass, 0.0f, 1.0f);
}
//need to translate back from unity world space so we use z here rather than y
WaterGrid.GridTouches.Add(new Vector3(p.x, p.z, pressure));
}
}
}
}
}
/** Cast a ray from the given screen position and check for collision with mass objects.
* If there is a collision with a mass object, add a touch point to the grid touches array
* (e.g. to be later be handled by a MassSpringSystem controller).
*/
public void ProjectScreenPositionToMassSpringGrid(Vector2 screenPosition)
{
Ray ray = Camera.main.ScreenPointToRay(screenPosition);
if (Physics.Raycast(ray, out raycastResult))
{
GameObject obj = raycastResult.collider.gameObject;
if (MassSpringSystem.IsMassUnit(obj.tag))
{
Vector3 p = obj.transform.position;
//need to translate back from unity world space so we use z here rather than y
GridTouches.Add(new Vector3(p.x, p.z, SimulatedPressure));
}
}
}
// Use this for initialization
void Start()
{
TerrainFrontStartPosition = TileFront.position;
TerrainBackStartPosition = TileBack.position;
PlayerStartPosition = Player.transform.position;
PlayerStartRotation = Player.transform.rotation;
SpawnIslands(TileFront, ref IslandsFront);
SpawnIslands(TileBack, ref IslandsBack);
if (WaterGridBack != null)
{
WaterSpawnerBack = WaterGridBack.GetComponent <MassSpawner>();
WaterSystemBack = WaterGridBack.GetComponent <MassSpringSystem>();
}
if (WaterGridFront != null)
{
WaterSpawnerFront = WaterGridFront.GetComponent <MassSpawner>();
WaterSystemFront = WaterGridFront.GetComponent <MassSpringSystem>();
}
PlayerForceController = Player.GetComponent <WaterForceController>();
}