pddl4j

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NullPointerException goal is null

1

Hello, I have a NullPointerException with my problem and my domain which seems to me correct. The error is : `java.lang.NullPointerException: Cannot invoke "fr.uga.pddl4j.problem.operator.Condition.cardinality()" because the return value of "fr.uga.pddl4j.heuristics.state.AbstractStateHeuristic.getGoal()"...

deschcla

Ho to solve problems with pddl 2.1?

2

Hi everyone! I am trying to solve a problem of a simple domain attached. Looking in the planners package, it seems the neither STN or statespace planners supports durative actions...

antbono

I tried creating a domain using negative conditions. After getting past the lex error due to failing to include the spec, I hit a null pointer exception: ```java.lang.NullPointerException at fr.uga.pddl4j.problem.FinalizedProblem.extractRelevantFluents(FinalizedProblem.java:373)...

fdouglis

HDDL - initial task network returns a list of null

1

Calling `problem.getInitialTaskNetwork().getTasks() `on **Towers benchmark (IPC)** returns a list with a **null** task. Also, if original HTN was simply `(task0 (shiftTower t1 t2 t3))` and I introduce an additional task...

o-fir

Gradle build error using mac (apple silicon)

1

I don't know if building the library is supossed to work on a mac at all but when I execute `./gradlew jar` or `./gradlew build` the following error: > What...

DavidKaub

An interesting feature would be to log all the simplifications done and the explanation during grounding. It would help to debug domains and problems.

pellierd

Fluent not appearing into durative action effects

1

The negative effect of the durative action 26 (at end (not (on ?small_ship ?big_ship))) does not appear in the effects of the action. [ECADomain.zip](https://github.com/pellierd/pddl4j/files/9659854/ECADomain.zip)

NicoCav

 can you help me here please in "writing your own planner" section

Lucy4621