* DEV-1761: Clean up Ruleset interface (#115)
* remove legacy ruleset types and simplify ruleset interface
* remove unnecessary settings argument from Ruleset interface
* decouple rules.Settings from client API and store settings as strings
* DEV 1761: Add new BoardState and Point fields (#117)
* add Point.TTL, Point.Value, GameState and PointState to BoardState
* allow maps to access BoardState.GameState,PointState
* add PreUpdateBoard and refactor snail_mode with it
* fix bug where an extra turn was printed to the console
* fix formatting
* fix lint errors
Co-authored-by: JonathanArns <jonathan.arns@googlemail.com>
* Separated out rivers and bridges into its own file with three map variants
* fixing tags
* removed extra 4 starting positions from the medium map since it only supports 8 players
* update GetUnoccupiedPoints to consider hazards with a flag
* use new utility method to fine unoccupied points and enforce map sizes
* changed up casting to make IsAllowable() more usable
* change map support for large #'s of snakes
* test square board fn
* format comment
* add whitespace
* better support large #'s of snakes on small boards
* include an intermediate xlarge size
* fix for rivers and bridges snake start positions
* update max player count, add unit test
* set player count to 12 (max for smallest size)
* fix: one of the 19x19 spawn points
* randomize snake placement at start positions
* randomly choose starts in quadrants
* fix: check that start positions are valid
* modify food placement to avoid hazards
* allow initial food placement for 8 snakes on 7x7
* fix logic to be for small board
* fix inverted logic
* logic should be actually <= 4 snakes, not 7
* reorganize code
* first draft of map generator interfaces
* add explicit random interface to board helpers
* implement standard map
* rename Generator to GameMap
* allow initializing snakes separately from placing them
* add random number generator to Settings
* updates to GameMap interface
* add helpers for creating and updating BoardState with maps
* add a new "pipeline" concept
- added new Pipeline type which is a series of stages
- added a global registry to facilitate plugin architecture
- 100% test coverage
* Refactor rulesets to provide and use Pipeline
* fix copypasta comments
* fix lint for unused method
* include game over stages in ruleset pipelines
* clean up unused private standard methods
* remove unused private methods in squad ruleset
* remove unused private methods in royale ruleset
* refactor: pipeline clone + return next board state
* YAGNI: remove unused Append
* refactor: improve stage names
* add no-op behavior to stages for initial state
* refactor: no-op decision within stage functions
* remove misleading comment that isn't true
* dont bother checking for init in gameover stages
* remove redundant test
* refactor: provide a combined ruleset/pipeline type
* fix: movement no-op for GameOver check
IsGameOver needs to run pipeline, move snakes needs to no-op for that
* add test coverage
* refactor: improve stage names and use constants
* add Error method
Support error checking before calling Execute()
* update naming to be American style
* panic when overwriting stages in global registry
* rename "Error" method and improve docs
* use testify lib for panic assertion
* remove redundant food stage
* use ruleset-specific logic for game over checks
* re-work Pipeline errors
* rework errors again
* add defensive check for zero length snake
* use old logic which checks current state, not next
* add warning about how PipelineRuleset checks for game over
* extract board generation out of rules.Ruleset
* update comment and remove redundant interface check
* clone boardState in constrictor to respect the ModifyBoardState interface
