Battlesnake/Byte-snake-engine
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add turn to BoardState and remove it from RoyaleRuleset (#52)

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This commit is contained in:
Rob O'Dwyer 2021-08-27 13:28:12 -07:00 • committed by GitHub
parent 17556e15c1
commit e9f408cdbb
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 31 additions and 27 deletions
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3
board.go
View file

@ -3,6 +3,7 @@ package rules
import "math/rand"
type BoardState struct {
Turn int32
Height int32
Width int32
Food []Point
@ -13,6 +14,7 @@ type BoardState struct {
// NewBoardState returns an empty but fully initialized BoardState
func NewBoardState(width, height int32) *BoardState {
return &BoardState{
Turn: 0,
Height: height,
Width: width,
Food: []Point{},
@ -24,6 +26,7 @@ func NewBoardState(width, height int32) *BoardState {
// Clone returns a deep copy of prevState that can be safely modified inside Ruleset.CreateNextBoardState
func (prevState *BoardState) Clone() *BoardState {
nextState := &BoardState{
Turn: prevState.Turn,
Height: prevState.Height,
Width: prevState.Width,
Food: append([]Point{}, prevState.Food...),

14
cli/commands/play.go
View file

@ -134,8 +134,7 @@ var run = func(cmd *cobra.Command, args []string) {
snakes := buildSnakesFromOptions()
var ruleset rules.Ruleset
ruleset = getRuleset(Seed, Turn, snakes)
ruleset := getRuleset(Seed, snakes)
state := initializeBoardFromArgs(ruleset, snakes)
for _, snake := range snakes {
Battlesnakes[snake.ID] = snake
@ -143,8 +142,7 @@ var run = func(cmd *cobra.Command, args []string) {
for v := false; !v; v, _ = ruleset.IsGameOver(state) {
Turn++
ruleset = getRuleset(Seed, Turn, snakes)
state = createNextBoardState(ruleset, state, snakes)
state = createNextBoardState(ruleset, state, snakes, Turn)
if ViewMap {
printMap(state, Turn)
@ -178,7 +176,7 @@ var run = func(cmd *cobra.Command, args []string) {
}
}
func getRuleset(seed int64, gameTurn int32, snakes []Battlesnake) rules.Ruleset {
func getRuleset(seed int64, snakes []Battlesnake) rules.Ruleset {
var ruleset rules.Ruleset
var royale rules.RoyaleRuleset
@ -193,7 +191,6 @@ func getRuleset(seed int64, gameTurn int32, snakes []Battlesnake) rules.Ruleset
royale = rules.RoyaleRuleset{
StandardRuleset: standard,
Seed: seed,
Turn: gameTurn,
ShrinkEveryNTurns: 10,
}
ruleset = &royale
@ -261,7 +258,7 @@ func initializeBoardFromArgs(ruleset rules.Ruleset, snakes []Battlesnake) *rules
return state
}
func createNextBoardState(ruleset rules.Ruleset, state *rules.BoardState, snakes []Battlesnake) *rules.BoardState {
func createNextBoardState(ruleset rules.Ruleset, state *rules.BoardState, snakes []Battlesnake, turn int32) *rules.BoardState {
var moves []rules.SnakeMove
if Sequential {
for _, snake := range snakes {
@ -301,6 +298,9 @@ func createNextBoardState(ruleset rules.Ruleset, state *rules.BoardState, snakes
log.Panic("[PANIC]: Error Producing Next Board State")
panic(err)
}
state.Turn = turn
return state
}

4
royale.go
View file

@ -10,8 +10,6 @@ type RoyaleRuleset struct {
Seed int64
// TODO: move Turn into BoardState?
Turn int32
ShrinkEveryNTurns int32
}
@ -28,7 +26,7 @@ func (r *RoyaleRuleset) CreateNextBoardState(prevState *BoardState, moves []Snak
}
// Royale's only job is now to populate the hazards for next turn - StandardRuleset takes care of applying hazard damage.
err = r.populateHazards(nextBoardState, r.Turn)
err = r.populateHazards(nextBoardState, prevState.Turn+1)
if err != nil {
return nil, err
}

37
royale_test.go
View file

@ -89,6 +89,7 @@ func TestRoyaleHazards(t *testing.T) {
for _, test := range tests {
b := &BoardState{
Turn: test.Turn,
Width: test.Width,
Height: test.Height,
}
@ -97,7 +98,6 @@ func TestRoyaleHazards(t *testing.T) {
HazardDamagePerTurn: 1,
},
Seed: seed,
Turn: test.Turn,
ShrinkEveryNTurns: test.ShrinkEveryNTurns,
}
@ -127,46 +127,49 @@ func TestRoyalDamageNextTurn(t *testing.T) {
r := RoyaleRuleset{StandardRuleset: StandardRuleset{HazardDamagePerTurn: 30}, Seed: seed, ShrinkEveryNTurns: 10}
m := []SnakeMove{{ID: "one", Move: "down"}}
r.Turn = 10
err := r.populateHazards(base, r.Turn-1)
require.NoError(t, err)
next, err := r.CreateNextBoardState(base, m)
stateAfterTurn := func(prevState *BoardState, turn int32) *BoardState {
nextState := prevState.Clone()
nextState.Turn = turn - 1
err := r.populateHazards(nextState, turn)
require.NoError(t, err)
nextState.Turn = turn
return nextState
}
prevState := stateAfterTurn(base, 9)
next, err := r.CreateNextBoardState(prevState, m)
require.NoError(t, err)
require.Equal(t, NotEliminated, next.Snakes[0].EliminatedCause)
require.Equal(t, int32(99), next.Snakes[0].Health)
require.Equal(t, Point{9, 0}, next.Snakes[0].Body[0])
require.Equal(t, 10, len(next.Hazards)) // X = 0
r.Turn = 20
err = r.populateHazards(base, r.Turn-1)
require.NoError(t, err)
next, err = r.CreateNextBoardState(base, m)
prevState = stateAfterTurn(base, 19)
next, err = r.CreateNextBoardState(prevState, m)
require.NoError(t, err)
require.Equal(t, NotEliminated, next.Snakes[0].EliminatedCause)
require.Equal(t, int32(99), next.Snakes[0].Health)
require.Equal(t, Point{9, 0}, next.Snakes[0].Body[0])
require.Equal(t, 20, len(next.Hazards)) // X = 9
r.Turn = 21
err = r.populateHazards(base, r.Turn-1)
require.NoError(t, err)
next, err = r.CreateNextBoardState(base, m)
prevState = stateAfterTurn(base, 20)
next, err = r.CreateNextBoardState(prevState, m)
require.NoError(t, err)
require.Equal(t, NotEliminated, next.Snakes[0].EliminatedCause)
require.Equal(t, int32(69), next.Snakes[0].Health)
require.Equal(t, Point{9, 0}, next.Snakes[0].Body[0])
require.Equal(t, 20, len(next.Hazards))
base.Snakes[0].Health = 15
next, err = r.CreateNextBoardState(base, m)
prevState.Snakes[0].Health = 15
next, err = r.CreateNextBoardState(prevState, m)
require.NoError(t, err)
require.Equal(t, EliminatedByOutOfHealth, next.Snakes[0].EliminatedCause)
require.Equal(t, int32(0), next.Snakes[0].Health)
require.Equal(t, Point{9, 0}, next.Snakes[0].Body[0])
require.Equal(t, 20, len(next.Hazards))
base.Food = append(base.Food, Point{9, 0})
next, err = r.CreateNextBoardState(base, m)
prevState.Food = append(prevState.Food, Point{9, 0})
next, err = r.CreateNextBoardState(prevState, m)
require.NoError(t, err)
require.Equal(t, Point{9, 0}, next.Snakes[0].Body[0])
require.Equal(t, NotEliminated, next.Snakes[0].EliminatedCause)