Battlesnake/Byte-snake-engine
Battlesnake/Byte-snake-engine
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change map support for large #'s of snakes (#92)

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* 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
This commit is contained in:
Torben 2022-07-07 11:14:30 -07:00 • committed by GitHub
parent 08cb7ae61d
commit 663c377cc4
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 174 additions and 101 deletions
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107
board_test.go
View file

@ -53,18 +53,47 @@ func TestCreateDefaultBoardState(t *testing.T) {
ExpectedNumFood int
Err error
}{
{1, 1, []string{"one"}, 0, nil},
{1, 2, []string{"one"}, 0, nil},
{1, 1, []string{"one"}, 0, ErrorNoRoomForSnake},
{1, 2, []string{"one"}, 0, ErrorNoRoomForSnake},
{1, 4, []string{"one"}, 1, nil},
{2, 2, []string{"one"}, 1, nil},
{9, 8, []string{"one"}, 1, nil},
{2, 2, []string{"one", "two"}, 0, nil},
{2, 2, []string{"one", "two"}, 0, ErrorNoRoomForSnake},
{1, 1, []string{"one", "two"}, 2, ErrorNoRoomForSnake},
{1, 2, []string{"one", "two"}, 2, ErrorNoRoomForSnake},
{BoardSizeSmall, BoardSizeSmall, []string{"one", "two"}, 3, nil},
{
BoardSizeSmall,
BoardSizeSmall,
[]string{"1", "2", "3", "4"},
5, // <= 4 snakes on a small board we get more than just center food
nil,
},
{
BoardSizeSmall,
BoardSizeSmall,
[]string{"1", "2", "3", "4", "5"},
1, // for this size and this many snakes, food is only placed in the center
nil,
},
{
BoardSizeSmall,
BoardSizeSmall,
[]string{"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16"},
1, // for this size and this many snakes, food is only placed in the center
nil,
},
{
BoardSizeMedium,
BoardSizeMedium,
[]string{"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16"},
17, // > small boards and we get non-center food
nil,
},
}
for testNum, test := range tests {
t.Logf("test case %d", testNum)
state, err := CreateDefaultBoardState(MaxRand, test.Width, test.Height, test.IDs)
require.Equal(t, test.Err, err)
if err != nil {
@ -87,6 +116,7 @@ func TestPlaceSnakesDefault(t *testing.T) {
// Because placement is random, we only test to ensure
// that snake bodies are populated correctly
// Note: because snakes are randomly spawned on even diagonal points, the board can accomodate number of snakes equal to: width*height/2
// Update: because we exclude the center point now, we can accommodate 1 less snake now (width*height/2 - 1)
tests := []struct {
BoardState *BoardState
SnakeIDs []string
@ -98,7 +128,7 @@ func TestPlaceSnakesDefault(t *testing.T) {
Height: 1,
},
make([]string, 1),
nil,
ErrorNoRoomForSnake, // we avoid placing snakes in the center, so a board size of 1 will error
},
{
&BoardState{
@ -137,9 +167,17 @@ func TestPlaceSnakesDefault(t *testing.T) {
Width: 5,
Height: 10,
},
make([]string, 25),
make([]string, 24),
nil,
},
{
&BoardState{
Width: 5,
Height: 10,
},
make([]string, 25),
ErrorNoRoomForSnake,
},
{
&BoardState{
Width: 10,
@ -180,14 +218,6 @@ func TestPlaceSnakesDefault(t *testing.T) {
make([]string, 8),
nil,
},
{
&BoardState{
Width: BoardSizeSmall,
Height: BoardSizeSmall,
},
make([]string, 9),
ErrorTooManySnakes,
},
{
&BoardState{
Width: BoardSizeMedium,
@ -201,7 +231,7 @@ func TestPlaceSnakesDefault(t *testing.T) {
Width: BoardSizeMedium,
Height: BoardSizeMedium,
},
make([]string, 9),
make([]string, 17),
ErrorTooManySnakes,
},
{
@ -217,7 +247,7 @@ func TestPlaceSnakesDefault(t *testing.T) {
Width: BoardSizeLarge,
Height: BoardSizeLarge,
},
make([]string, 9),
make([]string, 17),
ErrorTooManySnakes,
},
}
@ -422,17 +452,20 @@ func TestPlaceFood(t *testing.T) {
},
}
for _, test := range tests {
require.Len(t, test.BoardState.Food, 0)
err := PlaceFoodAutomatically(MaxRand, test.BoardState)
require.NoError(t, err)
require.Equal(t, test.ExpectedFood, len(test.BoardState.Food))
for _, point := range test.BoardState.Food {
require.GreaterOrEqual(t, point.X, 0)
require.GreaterOrEqual(t, point.Y, 0)
require.Less(t, point.X, test.BoardState.Width)
require.Less(t, point.Y, test.BoardState.Height)
}
for i, test := range tests {
t.Run(fmt.Sprintf("case %d", i), func(t *testing.T) {
require.Len(t, test.BoardState.Food, 0)
err := PlaceFoodAutomatically(MaxRand, test.BoardState)
require.NoError(t, err)
require.Equal(t, test.ExpectedFood, len(test.BoardState.Food))
for _, point := range test.BoardState.Food {
require.GreaterOrEqual(t, point.X, 0)
require.GreaterOrEqual(t, point.Y, 0)
require.Less(t, point.X, test.BoardState.Width)
require.Less(t, point.Y, test.BoardState.Height)
}
})
}
}
@ -637,14 +670,14 @@ func TestGetDistanceBetweenPoints(t *testing.T) {
}
}
func TestIsKnownBoardSize(t *testing.T) {
func TestIsSquareBoard(t *testing.T) {
tests := []struct {
Width int
Height int
Expected bool
}{
{1, 1, false},
{0, 0, false},
{1, 1, true},
{0, 0, true},
{0, 45, false},
{45, 1, false},
{7, 7, true},
@ -656,7 +689,7 @@ func TestIsKnownBoardSize(t *testing.T) {
}
for _, test := range tests {
result := isFixedBoardSize(&BoardState{Width: test.Width, Height: test.Height})
result := isSquareBoard(&BoardState{Width: test.Width, Height: test.Height})
require.Equal(t, test.Expected, result)
}
}
@ -824,12 +857,14 @@ func TestGetEvenUnoccupiedPoints(t *testing.T) {
},
}
for _, test := range tests {
evenUnoccupiedPoints := GetEvenUnoccupiedPoints(test.Board)
require.Equal(t, len(test.Expected), len(evenUnoccupiedPoints))
for i, e := range test.Expected {
require.Equal(t, e, evenUnoccupiedPoints[i])
}
for i, test := range tests {
t.Run(fmt.Sprintf("case %d", i), func(t *testing.T) {
evenUnoccupiedPoints := GetEvenUnoccupiedPoints(test.Board)
require.Equal(t, len(test.Expected), len(evenUnoccupiedPoints))
for i, e := range test.Expected {
require.Equal(t, e, evenUnoccupiedPoints[i])
}
})
}
}