{"id":44751,"date":"2022-12-08T11:15:29","date_gmt":"2023-09-23T03:48:45","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/44751-2\/"},"modified":"2024-04-29T04:18:36","modified_gmt":"2024-04-28T20:18:36","slug":"44751-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/44751-2\/","title":{"rendered":""},"content":{"rendered":"

\u666e\u6bb5\u304b\u3089\u696d\u52d9\u3067Go\u3092\u66f8\u3044\u3066\u3044\u308b\u306e\u3068\u3001
\n\u6700\u8fd1ebitengine\u3068\u3044\u3046Go\u3067\u3082\u7c21\u5358\u306b2D\u30b2\u30fc\u30e0\u3092\u4f5c\u6210\u3067\u304d\u308b\u30b2\u30fc\u30e0\u30a8\u30f3\u30b8\u30f3\u3092\u77e5\u3063\u305f\u306e\u3067\u3001
\nGo\u306e\u52c9\u5f37\u304c\u3066\u3089snake game\u3092\u4f5c\u6210\u3057\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n

 <\/p>\n

\u521d\u3081\u3066\u306e\u30b2\u30fc\u30e0\u4f5c\u6210\u306a\u306e\u3067\u5c11\u3057\u96e3\u3057\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u308f\u304b\u308a\u3084\u3059\u3044\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3057\u3066\u7406\u89e3\u3057\u306a\u304c\u3089\u9032\u3081\u307e\u3057\u305f\u3002<\/p>\n

\u81ea\u5206\u306finterface\u3084\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u65b9\u306b\u6163\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u306e\u3067\u5c11\u3057\u52c9\u5f37\u3057\u306a\u304c\u3089\u3067\u3057\u305f\u304c\u3001
\nGo\u8a00\u8a9e\u3092\u666e\u6bb5\u304b\u3089\u66f8\u3044\u3066\u3044\u308b\u65b9\u3067\u3042\u308c\u3070\u3059\u3050\u306b\u7406\u89e3\u3067\u304d\u308b\u304b\u3082\u3067\u3059\u3002<\/p>\n

 <\/p>\n

\u3053\u3093\u306a\u611f\u3058\u3067\u52d5\u304d\u307e\u3059<\/p>\n

\"\u753b\u9762\u53ce\u9332<\/div>\n

\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u69cb\u6210<\/h2>\n
.<\/span>\r\n\u251c\u2500\u2500 .gitignore\r\n\u251c\u2500\u2500 README.md\r\n\u251c\u2500\u2500 food.go\r\n\u251c\u2500\u2500 go.mod\r\n\u251c\u2500\u2500 go.sum\r\n\u251c\u2500\u2500 main.go\r\n\u2514\u2500\u2500 snake.go\r\n<\/code><\/pre>\n
\u30b3\u30fc\u30c9\u5185\u5bb9<\/h2>\n
main.go\u3067\u306febitengine\u3092\u52d5\u304b\u3059\u305f\u3081\u306b\u5fc5\u9808\u306eUpdate(), Draw(), Layout()\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u305f\u308a\u3001\u30b2\u30fc\u30e0\u306e\u30ea\u30b9\u30bf\u30fc\u30c8\u3092\u884c\u3046restart()\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u307e\u3059\u3002<\/p>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> (<\/span>\r\n\t\"fmt\"<\/span>\r\n\t\"github.com\/hajimehoshi\/ebiten\/v2\"<\/span>\r\n\t\"github.com\/hajimehoshi\/ebiten\/v2\/inpututil\"<\/span>\r\n\t\"github.com\/hajimehoshi\/ebiten\/v2\/text\"<\/span>\r\n\t\"github.com\/hajimehoshi\/ebiten\/v2\/vector\"<\/span>\r\n\t\"golang.org\/x\/image\/font\/basicfont\"<\/span>\r\n\t\"image\/color\"<\/span>\r\n\t\"log\"<\/span>\r\n\t\"math\/rand\"<\/span>\r\n\t\"time\"<\/span>\r\n)<\/span>\r\n\r\nconst<\/span> (<\/span>\r\n\t\/\/ game screen's pixel size<\/span>\r\n\tscreenWidth<\/span>  =<\/span> 320<\/span>\r\n\tscreenHeight<\/span> =<\/span> 240<\/span>\r\n\r\n\t\/\/ 1 tile's pixel size<\/span>\r\n\ttileSize<\/span> =<\/span> 5<\/span>\r\n)<\/span>\r\n\r\ntype<\/span> Game<\/span> struct<\/span> {<\/span>\r\n\tsnake<\/span>         *<\/span>Snake<\/span>\r\n\tfood<\/span>          *<\/span>Food<\/span>\r\n\tscore<\/span>         int<\/span>\r\n\tgameOver<\/span>      bool<\/span>\r\n\tticks<\/span>         int<\/span>\r\n\tupdateCounter<\/span> int<\/span>\r\n\tspeed<\/span>         int<\/span>\r\n}<\/span>\r\n\r\n\/\/ Update proceeds the game state.<\/span>\r\n\/\/ Update is called every tick (1\/60 [s] by default).<\/span>\r\nfunc<\/span> (<\/span>g<\/span> *<\/span>Game<\/span>)<\/span> Update<\/span>()<\/span> error<\/span> {<\/span>\r\n\t\/\/ \u30b2\u30fc\u30e0\u30aa\u30fc\u30d0\u30fc\u72b6\u614b\u3092\u51e6\u7406<\/span>\r\n\tif<\/span> g<\/span>.<\/span>gameOver<\/span> {<\/span>\r\n\t\t\/\/ R\u30ad\u30fc\u304c\u62bc\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3057\u3001\u62bc\u3055\u308c\u3066\u3044\u308c\u3070restart<\/span>\r\n\t\tif<\/span> inpututil<\/span>.<\/span>IsKeyJustPressed<\/span>(<\/span>ebiten<\/span>.<\/span>KeyR<\/span>)<\/span> {<\/span>\r\n\t\t\tg<\/span>.<\/span>restart<\/span>()<\/span>\r\n\t\t}<\/span>\r\n\t\treturn<\/span> nil<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u30b2\u30fc\u30e0\u306e\u66f4\u65b0\u30ab\u30a6\u30f3\u30bf\u30fc\u3092\u5236\u5fa1\u3002<\/span>\r\n\t\/\/ \u30d5\u30ec\u30fc\u30e0\u3054\u3068\u306b\u5b9f\u884c\u3092\u3057\u3066\u3001\u901f\u3055\u3088\u308a\u3082\u30ab\u30a6\u30f3\u30bf\u30fc\u304c\u5c0f\u3055\u3051\u308c\u3070\u65e9\u671f\u30ea\u30bf\u30fc\u30f3\u3092\u3057\u3066\u3001\u4ee5\u5f8c\u306e\u51e6\u7406\u3092\u30b9\u30ad\u30c3\u30d7\u3092\u3059\u308b\u3002\uff08\u86c7\u306e\u901f\u5ea6\u3092\u5236\u5fa1\u3059\u308b\u76ee\u7684\uff09<\/span>\r\n\tg<\/span>.<\/span>updateCounter<\/span>++<\/span>\r\n\tif<\/span> g<\/span>.<\/span>updateCounter<\/span> <<\/span> g<\/span>.<\/span>speed<\/span> {<\/span>\r\n\t\treturn<\/span> nil<\/span>\r\n\t}<\/span>\r\n\tg<\/span>.<\/span>updateCounter<\/span> =<\/span> 0<\/span>\r\n\r\n\t\/\/ \u86c7\u306e\u79fb\u52d5<\/span>\r\n\tg<\/span>.<\/span>snake<\/span>.<\/span>Move<\/span>()<\/span>\r\n\r\n\t\/\/ \u30ad\u30fc\u30dc\u30fc\u30c9\u5165\u529b\u3092\u76e3\u8996\u3057\u3066\u86c7\u306e\u79fb\u52d5\u65b9\u5411\u3092\u5909\u66f4<\/span>\r\n\tif<\/span> ebiten<\/span>.<\/span>IsKeyPressed<\/span>(<\/span>ebiten<\/span>.<\/span>KeyLeft<\/span>)<\/span> &&<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span>.<\/span>X<\/span> ==<\/span> 0<\/span> {<\/span>\r\n\t\tg<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span> =<\/span> Point<\/span>{<\/span>X<\/span>:<\/span> -<\/span>1<\/span>,<\/span> Y<\/span>:<\/span> 0<\/span>}<\/span>\r\n\t}<\/span>\r\n\tif<\/span> ebiten<\/span>.<\/span>IsKeyPressed<\/span>(<\/span>ebiten<\/span>.<\/span>KeyRight<\/span>)<\/span> &&<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span>.<\/span>X<\/span> ==<\/span> 0<\/span> {<\/span>\r\n\t\tg<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span> =<\/span> Point<\/span>{<\/span>X<\/span>:<\/span> 1<\/span>,<\/span> Y<\/span>:<\/span> 0<\/span>}<\/span>\r\n\t}<\/span>\r\n\tif<\/span> ebiten<\/span>.<\/span>IsKeyPressed<\/span>(<\/span>ebiten<\/span>.<\/span>KeyUp<\/span>)<\/span> &&<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span>.<\/span>Y<\/span> ==<\/span> 0<\/span> {<\/span>\r\n\t\tg<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span> =<\/span> Point<\/span>{<\/span>X<\/span>:<\/span> 0<\/span>,<\/span> Y<\/span>:<\/span> -<\/span>1<\/span>}<\/span>\r\n\t}<\/span>\r\n\tif<\/span> ebiten<\/span>.<\/span>IsKeyPressed<\/span>(<\/span>ebiten<\/span>.<\/span>KeyDown<\/span>)<\/span> &&<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span>.<\/span>Y<\/span> ==<\/span> 0<\/span> {<\/span>\r\n\t\tg<\/span>.<\/span>snake<\/span>.<\/span>Direction<\/span> =<\/span> Point<\/span>{<\/span>X<\/span>:<\/span> 0<\/span>,<\/span> Y<\/span>:<\/span> 1<\/span>}<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u86c7\u306e\u982d\u90e8\u306e\u4f4d\u7f6e\u304c\u753b\u9762\u5916\u306b\u51fa\u305f\u5834\u5408\u3001\u30b2\u30fc\u30e0\u30aa\u30fc\u30d0\u30fc\u3068\u306a\u308b<\/span>\r\n\thead<\/span> :=<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Body<\/span>[<\/span>0<\/span>]<\/span>\r\n\tif<\/span> head<\/span>.<\/span>X<\/span> <<\/span> 0<\/span> ||<\/span> head<\/span>.<\/span>Y<\/span> <<\/span> 0<\/span> ||<\/span> head<\/span>.<\/span>X<\/span> >=<\/span> screenWidth<\/span>\/<\/span>tileSize<\/span> ||<\/span> head<\/span>.<\/span>Y<\/span> >=<\/span> screenHeight<\/span>\/<\/span>tileSize<\/span> {<\/span>\r\n\t\tg<\/span>.<\/span>gameOver<\/span> =<\/span> true<\/span>\r\n\t\tg<\/span>.<\/span>speed<\/span> =<\/span> 10<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u86c7\u304c\u81ea\u5206\u81ea\u8eab\u3068\u885d\u7a81\u3057\u305f\u5834\u5408\u3001\u30b2\u30fc\u30e0\u30aa\u30fc\u30d0\u30fc\u3068\u306a\u308b<\/span>\r\n\tfor<\/span> _<\/span>,<\/span> part<\/span> :=<\/span> range<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Body<\/span>[<\/span>1<\/span>:<\/span>]<\/span> {<\/span>\r\n\t\tif<\/span> head<\/span>.<\/span>X<\/span> ==<\/span> part<\/span>.<\/span>X<\/span> &&<\/span> head<\/span>.<\/span>Y<\/span> ==<\/span> part<\/span>.<\/span>Y<\/span> {<\/span>\r\n\t\t\tg<\/span>.<\/span>gameOver<\/span> =<\/span> true<\/span>\r\n\t\t\tg<\/span>.<\/span>speed<\/span> =<\/span> 10<\/span>\r\n\t\t}<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u86c7\u304c\u98df\u3079\u7269\u3092\u98df\u3079\u305f\u5834\u5408\u306e\u51e6\u7406<\/span>\r\n\tif<\/span> head<\/span>.<\/span>X<\/span> ==<\/span> g<\/span>.<\/span>food<\/span>.<\/span>Position<\/span>.<\/span>X<\/span> &&<\/span> head<\/span>.<\/span>Y<\/span> ==<\/span> g<\/span>.<\/span>food<\/span>.<\/span>Position<\/span>.<\/span>Y<\/span> {<\/span>\r\n\t\tg<\/span>.<\/span>score<\/span>++<\/span>                \/\/ \u30b9\u30b3\u30a2+1<\/span>\r\n\t\tg<\/span>.<\/span>snake<\/span>.<\/span>GrowCounter<\/span> +=<\/span> 1<\/span> \/\/ \u86c7\u306e\u9577\u3055+1<\/span>\r\n\t\tg<\/span>.<\/span>food<\/span> =<\/span> NewFood<\/span>()<\/span>       \/\/ \u65b0\u3057\u3044food\u306e\u751f\u6210<\/span>\r\n\r\n\t\t\/\/ \u86c7\u306e\u901f\u5ea6\u3092\u4e0a\u3052\u308b\uff08\u65e9\u304f\u306a\u308a\u3059\u304e\u306a\u3044\u3088\u3046\u306b\u306f\u5236\u5fa1\uff1a8\u56de\u307e\u3067\uff09<\/span>\r\n\t\tif<\/span> g<\/span>.<\/span>speed<\/span> ><\/span> 2<\/span> {<\/span>\r\n\t\t\tg<\/span>.<\/span>speed<\/span>--<\/span>\r\n\t\t}<\/span>\r\n\t}<\/span>\r\n\r\n\treturn<\/span> nil<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>g<\/span> *<\/span>Game<\/span>)<\/span> Draw<\/span>(<\/span>screen<\/span> *<\/span>ebiten<\/span>.<\/span>Image<\/span>)<\/span> {<\/span>\r\n\t\/\/ \u30b2\u30fc\u30e0\u80cc\u666f\u3092\u9ed2\u3067\u5857\u308a\u3064\u3076\u3057<\/span>\r\n\tscreen<\/span>.<\/span>Fill<\/span>(<\/span>color<\/span>.<\/span>RGBA<\/span>{<\/span>R<\/span>:<\/span> 0<\/span>,<\/span> G<\/span>:<\/span> 0<\/span>,<\/span> B<\/span>:<\/span> 0<\/span>,<\/span> A<\/span>:<\/span> 255<\/span>})<\/span>\r\n\r\n\t\/\/ \u86c7\u306e\u4f53\u3092\u63cf\u753b<\/span>\r\n\tfor<\/span> _<\/span>,<\/span> p<\/span> :=<\/span> range<\/span> g<\/span>.<\/span>snake<\/span>.<\/span>Body<\/span> {<\/span>\r\n\t\t\/\/ \u86c7\u306e1\u30641\u3064\u306e\u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u7dd1\u3067\u5857\u308a\u3064\u3076\u3057<\/span>\r\n\t\tvector<\/span>.<\/span>DrawFilledRect<\/span>(<\/span>\r\n\t\t\tscreen<\/span>,<\/span>\r\n\t\t\tfloat32<\/span>(<\/span>p<\/span>.<\/span>X<\/span>*<\/span>tileSize<\/span>),<\/span>\r\n\t\t\tfloat32<\/span>(<\/span>p<\/span>.<\/span>Y<\/span>*<\/span>tileSize<\/span>),<\/span>\r\n\t\t\ttileSize<\/span>,<\/span>\r\n\t\t\ttileSize<\/span>,<\/span>\r\n\t\t\tcolor<\/span>.<\/span>RGBA<\/span>{<\/span>R<\/span>:<\/span> 0<\/span>,<\/span> G<\/span>:<\/span> 255<\/span>,<\/span> B<\/span>:<\/span> 0<\/span>,<\/span> A<\/span>:<\/span> 255<\/span>},<\/span>\r\n\t\t\ttrue<\/span>,<\/span>\r\n\t\t)<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u98df\u3079\u7269\u3092\u63cf\u753b\uff08\u8d64\u8272\uff09<\/span>\r\n\tvector<\/span>.<\/span>DrawFilledRect<\/span>(<\/span>\r\n\t\tscreen<\/span>,<\/span>\r\n\t\tfloat32<\/span>(<\/span>g<\/span>.<\/span>food<\/span>.<\/span>Position<\/span>.<\/span>X<\/span>*<\/span>tileSize<\/span>),<\/span>\r\n\t\tfloat32<\/span>(<\/span>g<\/span>.<\/span>food<\/span>.<\/span>Position<\/span>.<\/span>Y<\/span>*<\/span>tileSize<\/span>),<\/span>\r\n\t\ttileSize<\/span>,<\/span>\r\n\t\ttileSize<\/span>,<\/span>\r\n\t\tcolor<\/span>.<\/span>RGBA<\/span>{<\/span>R<\/span>:<\/span> 255<\/span>,<\/span> G<\/span>:<\/span> 0<\/span>,<\/span> B<\/span>:<\/span> 0<\/span>,<\/span> A<\/span>:<\/span> 255<\/span>},<\/span>\r\n\t\ttrue<\/span>,<\/span>\r\n\t)<\/span>\r\n\r\n\t\/\/ \u30b2\u30fc\u30e0\u30aa\u30fc\u30d0\u30fc\u753b\u9762\u306e\u8868\u793a<\/span>\r\n\tface<\/span> :=<\/span> basicfont<\/span>.<\/span>Face7x13<\/span>\r\n\tif<\/span> g<\/span>.<\/span>gameOver<\/span> {<\/span>\r\n\t\ttext<\/span>.<\/span>Draw<\/span>(<\/span>screen<\/span>,<\/span> \"Game Over\"<\/span>,<\/span> face<\/span>,<\/span> screenWidth<\/span>\/<\/span>2<\/span>-<\/span>40<\/span>,<\/span> screenHeight<\/span>\/<\/span>2<\/span>,<\/span> color<\/span>.<\/span>White<\/span>)<\/span>\r\n\t\ttext<\/span>.<\/span>Draw<\/span>(<\/span>screen<\/span>,<\/span> \"Press 'R' to restart\"<\/span>,<\/span> face<\/span>,<\/span> screenWidth<\/span>\/<\/span>2<\/span>-<\/span>60<\/span>,<\/span> screenHeight<\/span>\/<\/span>2<\/span>+<\/span>16<\/span>,<\/span> color<\/span>.<\/span>White<\/span>)<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ \u30b9\u30b3\u30a2\u306e\u8868\u793a<\/span>\r\n\tscoreText<\/span> :=<\/span> fmt<\/span>.<\/span>Sprintf<\/span>(<\/span>\"Score: %d\"<\/span>,<\/span> g<\/span>.<\/span>score<\/span>)<\/span>\r\n\ttext<\/span>.<\/span>Draw<\/span>(<\/span>screen<\/span>,<\/span> scoreText<\/span>,<\/span> face<\/span>,<\/span> 5<\/span>,<\/span> screenHeight<\/span>-<\/span>5<\/span>,<\/span> color<\/span>.<\/span>White<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>g<\/span> *<\/span>Game<\/span>)<\/span> Layout<\/span>(<\/span>outsideWidth<\/span>,<\/span> outsideHeight<\/span> int<\/span>)<\/span> (<\/span>screenWidth<\/span>,<\/span> screenHeight<\/span> int<\/span>)<\/span> {<\/span>\r\n\treturn<\/span> 320<\/span>,<\/span> 240<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> main<\/span>()<\/span> {<\/span>\r\n\t\/\/ generate seed values to add game randomness<\/span>\r\n\trand<\/span>.<\/span>NewSource<\/span>(<\/span>time<\/span>.<\/span>Now<\/span>()<\/span>.<\/span>UnixNano<\/span>())<\/span>\r\n\r\n\t\/\/ init game struct<\/span>\r\n\tgame<\/span> :=<\/span> &<\/span>Game<\/span>{<\/span>\r\n\t\tsnake<\/span>:<\/span>    NewSnake<\/span>(),<\/span>\r\n\t\tfood<\/span>:<\/span>     NewFood<\/span>(),<\/span>\r\n\t\tgameOver<\/span>:<\/span> false<\/span>,<\/span>\r\n\t\tticks<\/span>:<\/span>    0<\/span>,<\/span>\r\n\t\tspeed<\/span>:<\/span>    10<\/span>,<\/span>\r\n\t}<\/span>\r\n\r\n\t\/\/ set game screen size<\/span>\r\n\tebiten<\/span>.<\/span>SetWindowSize<\/span>(<\/span>screenWidth<\/span>*<\/span>2<\/span>,<\/span> screenHeight<\/span>*<\/span>2<\/span>)<\/span>\r\n\r\n\t\/\/ set game screen title<\/span>\r\n\tebiten<\/span>.<\/span>SetWindowTitle<\/span>(<\/span>\"Snake Game\"<\/span>)<\/span>\r\n\r\n\t\/\/ start game<\/span>\r\n\tif<\/span> err<\/span> :=<\/span> ebiten<\/span>.<\/span>RunGame<\/span>(<\/span>game<\/span>);<\/span> err<\/span> !=<\/span> nil<\/span> {<\/span>\r\n\t\tlog<\/span>.<\/span>Fatal<\/span>(<\/span>err<\/span>)<\/span>\r\n\t}<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>g<\/span> *<\/span>Game<\/span>)<\/span> restart<\/span>()<\/span> {<\/span>\r\n\tg<\/span>.<\/span>snake<\/span> =<\/span> NewSnake<\/span>()<\/span>\r\n\tg<\/span>.<\/span>score<\/span> =<\/span> 0<\/span>\r\n\tg<\/span>.<\/span>gameOver<\/span> =<\/span> false<\/span>\r\n\tg<\/span>.<\/span>food<\/span> =<\/span> NewFood<\/span>()<\/span>\r\n\tg<\/span>.<\/span>speed<\/span> =<\/span> 10<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
snake.go\u3067\u306f\u4e3b\u306b\u86c7\u306e\u5236\u5fa1\u3092\u884c\u3046\u30e1\u30bd\u30c3\u30c9\u3084\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
NewSnake(): \u86c7\u306e\u521d\u671f\u5316<\/p>\n
Move(): \u86c7\u306e\u79fb\u52d5<\/p>\n
package<\/span> main<\/span>\r\n\r\ntype<\/span> Point<\/span> struct<\/span> {<\/span>\r\n\t\/\/ x and y coordinates struct<\/span>\r\n\tX<\/span> int<\/span>\r\n\tY<\/span> int<\/span>\r\n}<\/span>\r\n\r\ntype<\/span> Snake<\/span> struct<\/span> {<\/span>\r\n\t\/\/ snake struct<\/span>\r\n\tBody<\/span>        []<\/span>Point<\/span>\r\n\tDirection<\/span>   Point<\/span>\r\n\tGrowCounter<\/span> int<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> NewSnake<\/span>()<\/span> *<\/span>Snake<\/span> {<\/span>\r\n\t\/\/ initialize snake<\/span>\r\n\treturn<\/span> &<\/span>Snake<\/span>{<\/span>\r\n\t\t\/\/ set window center position<\/span>\r\n\t\tBody<\/span>:<\/span> []<\/span>Point<\/span>{<\/span>\r\n\t\t\t{<\/span>\r\n\t\t\t\tX<\/span>:<\/span> screenWidth<\/span> \/<\/span> tileSize<\/span> \/<\/span> 2<\/span>,<\/span>\r\n\t\t\t\tY<\/span>:<\/span> screenHeight<\/span> \/<\/span> tileSize<\/span> \/<\/span> 2<\/span>,<\/span>\r\n\t\t\t},<\/span>\r\n\t\t},<\/span>\r\n\t\t\/\/ set the snake's direction of movement to the right<\/span>\r\n\t\tDirection<\/span>:<\/span> Point<\/span>{<\/span>\r\n\t\t\tX<\/span>:<\/span> 1<\/span>,<\/span>\r\n\t\t\tY<\/span>:<\/span> 0<\/span>,<\/span>\r\n\t\t},<\/span>\r\n\t}<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> (<\/span>s<\/span> *<\/span>Snake<\/span>)<\/span> Move<\/span>()<\/span> {<\/span>\r\n\t\/\/ \u65b0\u3057\u3044\u9032\u884c\u65b9\u5411\u306e\u5ea7\u6a19\u3092\u4f5c\u6210<\/span>\r\n\tnewHead<\/span> :=<\/span> Point<\/span>{<\/span>\r\n\t\tX<\/span>:<\/span> s<\/span>.<\/span>Body<\/span>[<\/span>0<\/span>]<\/span>.<\/span>X<\/span> +<\/span> s<\/span>.<\/span>Direction<\/span>.<\/span>X<\/span>,<\/span>\r\n\t\tY<\/span>:<\/span> s<\/span>.<\/span>Body<\/span>[<\/span>0<\/span>]<\/span>.<\/span>Y<\/span> +<\/span> s<\/span>.<\/span>Direction<\/span>.<\/span>Y<\/span>,<\/span>\r\n\t}<\/span>\r\n\t\/\/ Body\u306e\u5148\u982d\u306bnewHead\u3092\u8ffd\u52a0<\/span>\r\n\ts<\/span>.<\/span>Body<\/span> =<\/span> append<\/span>([]<\/span>Point<\/span>{<\/span>newHead<\/span>},<\/span> s<\/span>.<\/span>Body<\/span>...<\/span>)<\/span>\r\n\r\n\t\/\/ GrowCounter\u304c1\u3067\u3042\u308c\u3070\u8ffd\u52a0\u306a\u306e\u3067Body\u306e\u5909\u66f4\u306f\u7121\u3057<\/span>\r\n\t\/\/ GrowCounter\u304c0\u306e\u5834\u5408\u306f\u8ffd\u52a0\u7121\u3057\u306a\u306e\u3067\u3001\u86c7\u306e\u9577\u3055\u30921\u3064\u6e1b\u3089\u3059\uff08\u30ea\u30bb\u30c3\u30c8\uff09<\/span>\r\n\tif<\/span> s<\/span>.<\/span>GrowCounter<\/span> ><\/span> 0<\/span> {<\/span>\r\n\t\ts<\/span>.<\/span>GrowCounter<\/span>--<\/span>\r\n\t}<\/span> else<\/span> {<\/span>\r\n\t\ts<\/span>.<\/span>Body<\/span> =<\/span> s<\/span>.<\/span>Body<\/span>[<\/span>:<\/span>len<\/span>(<\/span>s<\/span>.<\/span>Body<\/span>)<\/span>-<\/span>1<\/span>]<\/span>\r\n\t}<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
food.go\u3067\u306f\u86c7\u304c\u98df\u3079\u308bfood\u306e\u751f\u6210\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u307e\u3059\u3002<\/p>\n
package<\/span> main<\/span>\r\n\r\nimport<\/span> \"math\/rand\"<\/span>\r\n\r\ntype<\/span> Food<\/span> struct<\/span> {<\/span>\r\n\tPosition<\/span> Point<\/span>\r\n}<\/span>\r\n\r\nfunc<\/span> NewFood<\/span>()<\/span> *<\/span>Food<\/span> {<\/span>\r\n\t\/\/ \u30e9\u30f3\u30c0\u30e0\u306a\u7b87\u6240\u306bfood\u3092\u4f5c\u6210<\/span>\r\n\tvar<\/span> food<\/span> Food<\/span>\r\n\tfor<\/span> {<\/span>\r\n\t\tfood<\/span>.<\/span>Position<\/span>.<\/span>X<\/span> =<\/span> rand<\/span>.<\/span>Intn<\/span>(<\/span>screenWidth<\/span> \/<\/span> tileSize<\/span>)<\/span>\r\n\t\tfood<\/span>.<\/span>Position<\/span>.<\/span>Y<\/span> =<\/span> rand<\/span>.<\/span>Intn<\/span>(<\/span>screenHeight<\/span> \/<\/span> tileSize<\/span>)<\/span>\r\n\r\n\t\t\/\/ \u753b\u9762\u4e00\u756a\u7aef\u3067\u3042\u308c\u3070\u518d\u5ea6\u751f\u6210<\/span>\r\n\t\tif<\/span> food<\/span>.<\/span>Position<\/span>.<\/span>X<\/span> !=<\/span> 0<\/span> &&<\/span>\r\n\t\t\tfood<\/span>.<\/span>Position<\/span>.<\/span>Y<\/span> !=<\/span> 0<\/span> &&<\/span>\r\n\t\t\tfood<\/span>.<\/span>Position<\/span>.<\/span>X<\/span> !=<\/span> (<\/span>screenWidth<\/span>\/<\/span>tileSize<\/span>-<\/span>1<\/span>)<\/span> &&<\/span>\r\n\t\t\tfood<\/span>.<\/span>Position<\/span>.<\/span>Y<\/span> !=<\/span> (<\/span>screenWidth<\/span>\/<\/span>tileSize<\/span>-<\/span>1<\/span>)<\/span> {<\/span>\r\n\t\t\tbreak<\/span>\r\n\t\t}<\/span>\r\n\t}<\/span>\r\n\r\n\treturn<\/span> &<\/span>food<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
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