Byte-snake-engine/constrictor.go

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package rules
DEV-1096 - add a new "pipeline" concept (#67) * 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
2022-04-19 15:52:57 -07:00
var constrictorRulesetStages = []string{
StageGameOverStandard,
DEV-1096 - add a new "pipeline" concept (#67) * 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
2022-04-19 15:52:57 -07:00
StageMovementStandard,
StageStarvationStandard,
StageHazardDamageStandard,
StageFeedSnakesStandard,
StageEliminationStandard,
StageSpawnFoodNoFood,
StageModifySnakesAlwaysGrow,
}
var wrappedConstrictorRulesetStages = []string{
StageGameOverStandard,
StageMovementWrapBoundaries,
StageStarvationStandard,
StageHazardDamageStandard,
StageFeedSnakesStandard,
StageEliminationStandard,
StageSpawnFoodNoFood,
StageModifySnakesAlwaysGrow,
}
func RemoveFoodConstrictor(b *BoardState, settings Settings, moves []SnakeMove) (bool, error) {
// Remove all food from the board
b.Food = []Point{}
return false, nil
}
func GrowSnakesConstrictor(b *BoardState, settings Settings, moves []SnakeMove) (bool, error) {
// Set all snakes to max health and ensure they grow next turn
for i := 0; i < len(b.Snakes); i++ {
DEV-1096 - add a new "pipeline" concept (#67) * 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
2022-04-19 15:52:57 -07:00
if len(b.Snakes[i].Body) <= 0 {
return false, ErrorZeroLengthSnake
}
b.Snakes[i].Health = SnakeMaxHealth
tail := b.Snakes[i].Body[len(b.Snakes[i].Body)-1]
subTail := b.Snakes[i].Body[len(b.Snakes[i].Body)-2]
if tail != subTail {
growSnake(&b.Snakes[i])
}
}
return false, nil
}