DEV 953: Add basic maps support to CLI (#74)

* remove squad support and switch to using pipelines only in RulesBuilder

* remove spawn_food.standard from legacy ruleset definitions

* bugfix: Royale map generates Standard food

* add maps support to CLI

* add automated tests for all registered GameMap implementations

* update README

royale.go

@@ -2,7 +2,6 @@ package rules
 
 import (
 	"errors"
-	"math/rand"
 )
 
 var royaleRulesetStages = []string{
@@ -10,7 +9,6 @@ var royaleRulesetStages = []string{
 	StageStarvationStandard,
 	StageHazardDamageStandard,
 	StageFeedSnakesStandard,
-	StageSpawnFoodStandard,
 	StageEliminationStandard,
 	StageSpawnHazardsShrinkMap,
 	StageGameOverStandard,
@@ -19,8 +17,6 @@ var royaleRulesetStages = []string{
 type RoyaleRuleset struct {
 	StandardRuleset
 
-	Seed int64
-
 	ShrinkEveryNTurns int
 }
 
@@ -55,7 +51,7 @@ func PopulateHazardsRoyale(b *BoardState, settings Settings, moves []SnakeMove)
 		return false, nil
 	}
 
-	randGenerator := rand.New(rand.NewSource(settings.RoyaleSettings.seed))
+	randGenerator := settings.GetRand(0)
 
 	numShrinks := turn / settings.RoyaleSettings.ShrinkEveryNTurns
 	minX, maxX := 0, b.Width-1
@@ -91,7 +87,6 @@ func (r *RoyaleRuleset) IsGameOver(b *BoardState) (bool, error) {
 func (r RoyaleRuleset) Settings() Settings {
 	s := r.StandardRuleset.Settings()
 	s.RoyaleSettings = RoyaleSettings{
-		seed:              r.Seed,
 		ShrinkEveryNTurns: r.ShrinkEveryNTurns,
 	}
 	return s