Motivation

For updating versions in the MPW Framework or MPW Simulators, currently it is some effort to update all versions correctly.
To save time and avoid mistakes when manually updating the versions for a release/snapshot, a tool would help a lot.

Note

See the releng/release-checklist.md of the framework/simulator repos.

Reproduce

• Use the Java hamster-simulator
• Save the attached territory on the file system
• Execute a hamster-program, which loads this territory

        loadTerritoryFromResourceFile("de.unistuttgart.hamster.territories/territory50x50.ter");

Symptom: The initialization of the territory is slow, it takes a few seconds.

Assumption: With bigger territories, the time increases quadratically.

Reason

The editor commands like addWallToTile are generated with a graph pattern matching, which makes no used of efficient Tile search.
In the sample territory, nearly for each tile one wall is placed. This leads to a quadratic algorithm, since for each tile, each other tile has to be searched in the worst case, until the tile with a given location is found.

Solution Proposal

For the two-dimensional tile collection, an indexed access in the generated code should fix the performance issue. An idea could be to determine that a Tile object shall be matched by a x and y coordinate in the QVTo logic.

Then a special ReferenceCondition will be inserted, which is generated as a special getter call on the underlying Stage.
Also, the Stage class itself has to be extended with a special indexed-based getter for obtaining Tile objects.

Motivation

Kotlin is a modern language, which has interesting features like multi-language support. With Kotlin, the generated simulators could also be used for a browser-based execution.

Since Kotlin covers several concepts of Java, the adaption from the Java generator to a Kotlin generator is expected to be relatively easy.

Motivation

For new MPWs, a template project shall be provided. This way it can be avoided, that all artifacts has to be created from scratch.

Note

It is planned to provide a tempate-project generator, which automatically replaces the MPW terms in a given project structure.

See: https://github.com/Fumapps/mpw-modeling-template

Motivation

Currently, the SDL based UI rendering code is duplicated in the Hamster and Kara simulator. This is bad, hence the common code shall be extracted into the C++ MPW Simulator Framework.

Note

This will introduce a dependency in the C++ MPW Simulator Framework to the SDL2/Nanogui libraries.

Motivation

Currently, for Java the Query-DSL constraints are generated as simple comments.
Since the abstract syntax is provided with enough details about the constraints, these comments could also be generated in valid JML syntax.