Tracking Player Resources and Collecting Free Starting Resources from Settlements

TLDR

Updated player model to hold number of resource cards each player has. Updated PLACE_FREE_SETTLEMENT logic so that resources are collected based on second placed settlment.

Main work

• Updating player model with a Map<ResourceColor, Integer> field.
• Updating CatanGraphService to find the resources that should be collected by a Settlement graph node.
• Manipulating maps and dealing with potential null values.

Challenges

• Continuing to have to untangle enums between frontend and backend. Resources have an id value, a color, and a name all derived from their enums.
• Originally had a bug where ResourceColor.DESERT was causing key misses in player models, since players cannot collect the DESERT resource. Fixed with simple filter, but another stumbling block with the enum design.
• Somewhat of a pain working with ngFor and key-value pairs. Needed custom method to return a list of object with key and value properties instead of a true map structure.

Learnings

• Map structure I original assumed for finding settlements near a hexagon is actually backwards. Should have keyed my map with the settlements and had sets of hexagons as the values. I can refactor this later.
• <ng-container></ng-container> can be used for directives like *ngFor that you do not want to generate a parent HTML element for (e.g., no parent div desired).