public String getStateDescription(State s) throws EvalException {
StringBuilder sb = new StringBuilder();
TYPE_NAME xpos_type = new TYPE_NAME("xpos");
ArrayList<LCONST> list_xpos = s._hmObject2Consts.get(xpos_type);
TYPE_NAME ypos_type = new TYPE_NAME("ypos");
ArrayList<LCONST> list_ypos = s._hmObject2Consts.get(ypos_type);
PVAR_NAME GOAL = new PVAR_NAME("GOAL");
PVAR_NAME robot_at = new PVAR_NAME("robot-at");
PVAR_NAME P = new PVAR_NAME("P");
if (_bd == null) {
IS_OBFUSCATED = !list_xpos.get(0).toString().equals("x1");
int max_row = list_ypos.size() - 1;
int max_col = list_xpos.size();
_bd =
new BlockDisplay(
"RDDL Navigation Simulation", "RDDL Navigation Simulation", max_row + 2, max_col + 2);
}
// Set up an arity-1 parameter list
ArrayList<LCONST> params = new ArrayList<LCONST>(2);
params.add(null);
params.add(null);
_bd.clearAllCells();
_bd.clearAllLines();
for (LCONST xpos : list_xpos) {
for (LCONST ypos : list_ypos) {
int col = new Integer(xpos.toString().substring(2, xpos.toString().length()));
int row = new Integer(ypos.toString().substring(2, ypos.toString().length()));
if (IS_OBFUSCATED) {
row = (int) Math.sqrt(row - 11);
col = (int) Math.sqrt(col - 5);
}
row = row - 1;
params.set(0, xpos);
params.set(1, ypos);
boolean is_goal = (Boolean) s.getPVariableAssign(GOAL, params);
boolean robot = (Boolean) s.getPVariableAssign(robot_at, params);
float prob = 1f - ((Number) s.getPVariableAssign(P, params)).floatValue();
if (robot && is_goal) _bd.setCell(row, col, Color.red, "G!");
else if (is_goal) _bd.setCell(row, col, Color.cyan, "G");
else if (robot) _bd.setCell(row, col, Color.blue, null);
else {
Color cell_color = new Color(prob, prob, prob);
_bd.setCell(row, col, cell_color, null);
}
}
}
_bd.repaint();
// Sleep so the animation can be viewed at a frame rate of 1000/_nTimeDelay per second
try {
Thread.currentThread().sleep(_nTimeDelay);
} catch (InterruptedException e) {
System.err.println(e);
e.printStackTrace(System.err);
}
return sb.toString();
}
public void close() {
_bd.close();
}
