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Add examples/2048 (#181)
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Hajime Hoshi
parent
8855df40e4
commit
8daa246da4
93
examples/2048/2048/board.go
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93
examples/2048/2048/board.go
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// Copyright 2016 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package twenty48
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import (
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"fmt"
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"math/rand"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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)
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type Board struct {
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size int
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tiles map[*Tile]struct{}
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}
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func NewBoard(size int) *Board {
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b := &Board{
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size: size,
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tiles: map[*Tile]struct{}{},
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}
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for i := 0; i < 2; i++ {
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b.addRandomTile()
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}
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return b
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}
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func (b *Board) addRandomTile() bool {
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cells := make([]bool, b.size*b.size)
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for t := range b.tiles {
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i := t.x + t.y*b.size
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cells[i] = true
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}
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availableCells := []int{}
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for i, b := range cells {
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if b {
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continue
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}
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availableCells = append(availableCells, i)
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}
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if len(availableCells) == 0 {
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return false
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}
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c := availableCells[rand.Intn(len(availableCells))]
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v := 2
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if rand.Intn(10) == 0 {
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v = 4
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}
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x := c % b.size
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y := c / b.size
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t := NewTile(v, x, y)
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b.tiles[t] = struct{}{}
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return true
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}
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func (b *Board) Move(dir Dir) {
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b.addRandomTile()
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}
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func (b *Board) Draw(screen *ebiten.Image) error {
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posToTile := map[int]*Tile{}
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for t := range b.tiles {
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i := t.x + t.y*b.size
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posToTile[i] = t
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}
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str := ""
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for j := 0; j < b.size; j++ {
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for i := 0; i < b.size; i++ {
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t := posToTile[i+j*b.size]
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if t != nil {
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str += fmt.Sprintf("[%4d]", t.value)
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} else {
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str += "[ ]"
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}
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}
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str += "\n"
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}
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ebitenutil.DebugPrint(screen, str)
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return nil
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}
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61
examples/2048/2048/game.go
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61
examples/2048/2048/game.go
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@ -0,0 +1,61 @@
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// Copyright 2016 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package twenty48
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import (
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"math/rand"
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"time"
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"github.com/hajimehoshi/ebiten"
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)
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func init() {
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rand.Seed(time.Now().UnixNano())
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}
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const (
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ScreenWidth = 420
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ScreenHeight = 600
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boardSize = 4
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)
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type Game struct {
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input *Input
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board *Board
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}
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func NewGame() *Game {
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return &Game{
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input: NewInput(),
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board: NewBoard(boardSize),
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}
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}
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func (g *Game) Update() error {
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if err := g.input.Update(); err != nil {
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return err
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}
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if dir, ok := g.input.Dir(); ok {
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g.board.Move(dir)
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}
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return nil
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}
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func (g *Game) Draw(screen *ebiten.Image) error {
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if err := g.board.Draw(screen); err != nil {
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return err
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}
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return nil
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}
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81
examples/2048/2048/input.go
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81
examples/2048/2048/input.go
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@ -0,0 +1,81 @@
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// Copyright 2016 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package twenty48
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import (
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"github.com/hajimehoshi/ebiten"
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)
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type Dir int
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const (
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DirUp Dir = iota
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DirRight
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DirDown
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DirLeft
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)
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func (d Dir) Vector() (x, y int) {
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switch d {
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case DirUp:
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return 0, -1
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case DirRight:
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return 1, 0
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case DirDown:
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return 0, 1
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case DirLeft:
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return -1, 0
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}
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panic("not reach")
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}
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type Input struct {
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keyState map[ebiten.Key]int
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}
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func NewInput() *Input {
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return &Input{
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keyState: map[ebiten.Key]int{},
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}
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}
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var (
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dirKeys = map[ebiten.Key]Dir{
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ebiten.KeyUp: DirUp,
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ebiten.KeyRight: DirRight,
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ebiten.KeyDown: DirDown,
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ebiten.KeyLeft: DirLeft,
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}
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)
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func (i *Input) Update() error {
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for k := range dirKeys {
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if ebiten.IsKeyPressed(k) {
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i.keyState[k]++
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} else {
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i.keyState[k] = 0
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}
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}
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return nil
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}
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func (i *Input) Dir() (Dir, bool) {
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for k, d := range dirKeys {
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if i.keyState[k] == 1 {
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return d, true
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}
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}
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return 0, false
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}
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29
examples/2048/2048/tile.go
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29
examples/2048/2048/tile.go
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@ -0,0 +1,29 @@
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// Copyright 2016 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package twenty48
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type Tile struct {
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value int
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x int
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y int
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}
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func NewTile(value int, x, y int) *Tile {
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return &Tile{
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value: value,
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x: x,
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y: y,
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}
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}
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45
examples/2048/main.go
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45
examples/2048/main.go
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// Copyright 2016 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"log"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/examples/2048/2048"
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)
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var (
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game = twenty48.NewGame()
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)
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func update(screen *ebiten.Image) error {
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if err := game.Update(); err != nil {
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return err
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}
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if ebiten.IsRunningSlowly() {
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return nil
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}
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if err := game.Draw(screen); err != nil {
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return err
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}
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return nil
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}
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func main() {
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if err := ebiten.Run(update, twenty48.ScreenWidth, twenty48.ScreenHeight, 1, "2048 (Ebiten Demo)"); err != nil {
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log.Fatal(err)
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}
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}
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