貪食蛇_S 副本 | JavaScript 程式專案

{"id":119718,"student_id":3302,"content":"// 將背景設定為黑色\nsetBackdrop(\"#fcfc03\");\n// 用 \"head.gif\" 創造一個角色\nvar head = createSprite(\"head.gif\");\nhead.x = 320;\nhead.y = 240;\nvar food = createSprite(\"food.gif\");\nfood.x = Math.random()*640;\nfood.y = Math.random()*480;\nvar clock = 0;\nvar score = 0;\nvar alive = true;\nvar bodies = [];\nvar speed = 6;\n\nforever(function() {\n    // 在這裡的程式碼會不斷執行\n    clock += 1;\n    if (clock % speed === 0 \u0026\u0026 alive)\n        move();\n    eat();\n    die();\n    playerControl();\n    print(score);\n\n}\n);\n\nfunction eat() {\n    if (head.touched(food)) {\n        food.x = Math.random()*640;\n        food.y = Math.random()*480;\n        score = score + 1;\n        var body = createSprite(\"body.gif\");\n        bodies.push(body);\n    }\n}\n\nfunction move() {\n\n    if (bodies.length \u003e 0) {\n        var lastBody = bodies.pop();\n        lastBody.x = head.x;\n        lastBody.y = head.y;\n        bodies.unshift(lastBody);\n    }\n    head.stepForward(16);\n    \n}\n\nfunction playerControl() {\n    if(key.right \u0026\u0026 head.direction != 270){\n        head.direction = 90;\n    }\n    if(key.left \u0026\u0026 head.direction != 90){\n        head.direction = 270;\n    }\n    if(key.up \u0026\u0026 head.direction != 180){\n        head.direction = 0;\n    }\n    if(key.down \u0026\u0026 head.direction != 0){\n        head.direction = 180;\n    }\n}\n// 當按下鍵盤的「右方向鍵」時\n\n\n\nfunction die () {\n    if (head.touched(bodies) || head.x \u003c 0 || head.x \u003e 640 || head.y \u003c 0 || head.y \u003e 480) {\n        alive = false;\n    }\n}","created_at":"2020-01-15T20:37:58.823+08:00","updated_at":"2020-01-25T01:35:14.344+08:00","name":"貪食蛇_S 副本","language":"javascript","screenshot":{"url":"https://cdn8.koding.school/uploads/project/screenshot/119718/504b3878fe8714b5f5acbd55b0082824.jpg"},"parent_id":54317,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":161,"hashid":"d5msz53d","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}