/** overrides Planktonic.determineNewLoc implements chemotaxis */
protected void determineNewLoc() {
// get the specific soluteGrid
if (chemotaxSolute == null) {
chemotaxSolute =
this._agentGrid.mySim.soluteList[this._agentGrid.mySim.getSoluteIndex(chemoeffector)];
}
if (chemotaxSolute.getValueAt(_location) > chem_threshold) {
chemotax();
} else {
super.determineNewLoc();
}
}