/**
* computes the neighbouring particles around the pivot gridreverence with the distance of circleDistanceAroundPivot
*/
public IList getCellContentAroundPivot(SIHJR_PVFS_GridReference gridReference, int circleDistanceAroundPivot)
{
IList list = new ArrayList ();
//list.Add (_gridArray [gridReference.x, gridReference.y]);
int l, t, r, b;
l = Mathf.Max (0, gridReference.x - circleDistanceAroundPivot);
t = Mathf.Max (0, gridReference.y - circleDistanceAroundPivot);
r = Mathf.Min (_gridWidthCellCount, gridReference.x + circleDistanceAroundPivot);
b = Mathf.Min (_gridHeightCellCount, gridReference.y + circleDistanceAroundPivot);
/*
Debug.Log ("around pX: " + gridReference.x + "-pY: " + gridReference.y + " is :::::::: l: " + l + ", t: " + t + ", r: " + r + ", b:" + b);
if (circleDistanceAroundPivot == 0 && _gridArray [gridReference.x, gridReference.y] != null) {
Debug.Log ("count around pX: " + gridReference.x + "-pY: " + gridReference.y + " is :::::::: " + _gridArray [gridReference.x, gridReference.y].Count);
}
*/
//go through grid
for (int i = l; i<=r; i++) {
//Debug.Log("first loop");
for (int j = t; j<=b; j++) {
//Debug.Log("second loop");
//go through list
//Debug.Log("grid: " + _gridArray [i, j] + " -- equals null?: " + (_gridArray [i, j] == null));
if (_gridArray [i, j] != null && _gridArray [i, j].Count > 0) {
//Debug.Log("grid at [" + i + "," + j + "] count: " + _gridArray [i, j].Count);
foreach (SIHJR_PVFS_Particle p in _gridArray [i, j]) {
list.Add (p);
}
}
}
}
return list;
}
public void insertParticleToGrid(SIHJR_PVFS_Particle particle, SIHJR_PVFS_GridReference gR)
{
//Debug.Log ("gr: " + gR.x);// + " - gridArray: " + _gridArray[gR.x, gR.y].ToString());
//insert particle to grid
if (_gridArray[gR.x, gR.y] == null) {
//Debug.Log ("null");
_gridArray[gR.x, gR.y] = new ArrayList ();
} else {
//Debug.Log ("not null but: " + _gridArray [0, 0]);
//_gridArray[gR.x, gR.y].Add (particle);
}
_gridArray[gR.x, gR.y].Add(particle);
//add information of gridreference to particle
particle.gridReference = gR;
}
public void moveParticleTo(SIHJR_PVFS_Particle p, SIHJR_PVFS_GridReference gR)
{
//p.gridReference
//Debug.Log ("moveParticleTo-Method -- gridcount OLD before remove: " + _gridArray [p.gridReference.x, p.gridReference.y].Count + " gr["+p.gridReference.x+","+p.gridReference.y+"]");
_gridArray [p.gridReference.x, p.gridReference.y].Remove (p);
//Debug.Log ("moveParticleTo-Method -- gridcount OLD after remove: " + _gridArray [p.gridReference.x, p.gridReference.y].Count + " gr["+p.gridReference.x+","+p.gridReference.y+"]");
//_gridArray [gR.x, gR.y].Add (p);
if (_gridArray [gR.x, gR.y] == null) {
//Debug.Log ("moveParticleTo-Method -- gridcount NEW before remove: null & 0");
} else {
//Debug.Log ("moveParticleTo-Method -- gridcount NEW before remove: " + _gridArray [gR.x, gR.y].Count + " gr["+gR.x+","+gR.y+"]");
}
insertParticleToGrid (p, gR);
//Debug.Log ("moveParticleTo-Method -- gridcount NEW after remove: " + _gridArray [gR.x, gR.y].Count + " gr["+gR.x+","+gR.y+"]");
}
public SIHJR_PVFS_GridReference gridPositionOf(SIHJR_PVFS_Particle particle)
{
float centerDiffX, centerDiffY;
int gridX, gridY;
if (particle.x > _left && particle.x < _right) {
//calculate difference between center points
centerDiffX = _bounds.center.x - particle.x;
//then use the influenceWidth (_h from controller which is the gridWidth)
centerDiffX = centerDiffX / _influenceWidth; //can be negative
//becasue it can be negative, add the difference to the center (half gridWidthCount)
gridX = (int)Mathf.Ceil (_gridWidthCellCount / 2f + centerDiffX);
} else {
gridX = -1;
}
if (particle.y > _bottom && particle.y < _top) {
//calculate difference between center points
centerDiffY = _bounds.center.y - particle.y;
//then use the influenceWidth (_h from controller which is the gridWidth)
centerDiffY = centerDiffY / _influenceWidth; //can be negative
//becasue it can be negative, add the difference to the center (half gridWidthCount)
gridY = (int)Mathf.Ceil (_gridHeightCellCount / 2f + centerDiffY);
} else {
gridY = -1;
}
SIHJR_PVFS_GridReference gridReference = new SIHJR_PVFS_GridReference (gridX, gridY);
return gridReference;
}
