score_keeping
Logic To track the score, the parameters _ownScore and _opponentScore are added to TempControllers together with getter, setter, incrementer and decrementer. Each place, where a goal was taken (in playerMenu and 7mMenu and goalkeeper actions), those functions are used.
UI The ui is implemented in score_keeping.dart. There is the Widget ScoreKeeping which builds the score on the main screen. The white Score field is actually a button where you can click and a popup menu opens to edit the score manually. This consists of TextButtons with + and - to add or remove just one goal. To manually enter the score, the score is written in a TextField. When an integer is given to this field, the score changes to this number. Otherwise nothing happens.
To close the menu, you just have to click outside.