public static bool IsObjectIsInFrontOf(IsometricData isoObjectLeft, IsometricData isoObjectRight)
{
var leftMinCal = new float3(-isoObjectLeft.IsoPosition.x, isoObjectLeft.IsoPosition.y, isoObjectRight.IsoPosition.z);
var leftMaxCal = leftMinCal + new float3(isoObjectLeft.IsoSize.xy, isoObjectRight.IsoSize.z);
var rightMinCal = new float3(-isoObjectRight.IsoPosition.x, isoObjectRight.IsoPosition.y, isoObjectLeft.IsoPosition.z);
var rightMaxCal = rightMinCal + new float3(isoObjectRight.IsoSize.xy, isoObjectLeft.IsoSize.z);
//from https://shaunlebron.github.io/IsometricBlocks/
bool leftCanBeInFront = math.all(leftMaxCal > rightMinCal);
if (leftCanBeInFront)
{
//from http://bannalia.blogspot.com/2008/02/filmation-math.html
bool rightCanBeInFront = math.all(rightMaxCal > leftMinCal);
if (rightCanBeInFront)
{
//left and right can be in front, search deeper
var deltaLeftToRight = leftMaxCal - rightMinCal;
var deltaRightToLeft = rightMaxCal - leftMinCal;
var deltaProjection = isoObjectLeft.IsoSize + isoObjectRight.IsoSize - math.abs(deltaRightToLeft - deltaLeftToRight);
var condition = new bool2(deltaProjection.y <= deltaProjection.x && deltaProjection.y <= deltaProjection.z,
deltaProjection.x <= deltaProjection.y && deltaProjection.x <= deltaProjection.z);
//better than an if else if for vectorization
var res = new bool3(condition.x & (deltaLeftToRight.y > deltaRightToLeft.y),
(condition.x == false) & condition.y & (deltaLeftToRight.x > deltaRightToLeft.x),
(math.any(condition.xy) == false) & (deltaLeftToRight.z > deltaRightToLeft.z));
return(math.any(res));
}
}
return(leftCanBeInFront);
}
public static bool IsIsoObjectOverlap(IsometricData isoObjectLeft, IsometricData isoObjectRight)
{
return(math.all((isoObjectLeft.ScreenMin < isoObjectRight.ScreenMax) & (isoObjectLeft.ScreenMax > isoObjectRight.ScreenMin)));
}
public void UpdateIsometricData(IsometricDataGameobject isoGO, IsometricData newData)
{
_isometricDataToUpdate[isoGO] = newData;
}
