小朋友下樓梯副本 | JavaScript 程式專案

{"id":47253,"student_id":1404,"content":"setBackdrop('black');\n\n// 創造天花板\nvar ceiling = createSprite(\"ceiling.png\");\nceiling.x = 320;\nceiling.y = 8;\nceiling.layer = 1;\n\n// 創造左右牆壁\nvar left_wall = createSprite(\"wall.png\");\nvar right_wall = createSprite(\"wall.png\");\nleft_wall.x = 130;\nright_wall.x = 510;\n\n// 創造玩家\nvar player = createSprite([\"player_1.png\", \"player_2.png\", \"player_3.png\", \"player_4.png\", \"player_5.png\"]);\nplayer.y = 50;\n\nvar stairs = [];\nvar vy = 0;\nvar life = 10;\nvar lastTime = 0;\nvar score = 0;\n\nvar best = DB.variables.bestScore ||0;\n\n\nfor (var i = 0; i \u003c 8; i++) {\n    var stair = createSprite([\"conveyor_left.png\", \"conveyor_right.png\", \"normal.png\", \"nails.png\", \"trampoline.png\", \"fake.png\"]);\n    stair.x = Math.random()*290 + 185;\n    stair.y = i*80;\n    stair.costumeId = Math.floor(Math.random()*6);\n    stairs.push(stair);\n}\n\nvar flash = false;\nforever(function() {\n    setBackdrop('black');\n    if(flash == true){\n        setBackdrop('red');\n        sound.play('flash.mp3');\n        flash = false;\n    }\n\n\n    movement();\n\n    if (player.touched(ceiling) \u0026\u0026 Date.now() - lastTime \u003e 3000) {\n        life -= 1;\n        lastTime = Date.now();\n        flash = true;\n    }\n\n    if(score \u003e best){\n        DB.variables.set('bestscore', score)\n    }\n    \n    if (key.left \u0026\u0026 !player.touched(left_wall)) {\n        player.x -= 3;\n    }\n    if (key.right \u0026\u0026 !player.touched(right_wall)) {\n        player.x += 3;\n    }\n\n    vy += 0.15;\n    player.y += vy;\n\n    for (var i = 0; i \u003c stairs.length; i++) {\n        stairs[i].y -= 2;\n        if (stairs[i].y \u003c -10) {\n            stairs[i].costumeId = Math.floor(Math.random()*5);\n            stairs[i].y += 640;\n            stairs[i].hidden = false;\n            score += 1;\n        }\n    }\n\n    if (life \u003c= 0 || player.y \u003e 480) {\n        setBackdrop(\"red\");\n        stop();\n        sound.play(\"gg.mp3\");\n\n    }\n\n    print('當前分數：'+score, 300, 10, 'red', 20);\n    print('歷史分數：'+best, 300, 40, 'red', 20);\n    print('生命：'+life, 300, 70, 'red', 20);\n});\n\nvar touchOn; //紀錄上一圈踩到的釘子\nplayer.when('touch', stairs, function(s) {\n    vy = 0;\n    player.y = s.y - 20;\n    //彈簧墊\n    if (s.costumeId == 4) {\n        vy = -7;\n    }\n    //右傳送帶\n    if (s.costumeId == 1) {\n        player.x += 2;\n    }\n    //左傳送帶\n    if (s.costumeId == 0) {\n        player.x -= 2;\n    }\n\n    //釘子\n    if (s.costumeId == 3 \u0026\u0026 s != touchOn) {\n        life -= 1;\n        flash = true;\n    }\n\n    //藍色階梯\n    if (s.costumeId == 2 \u0026\u0026 s != touchOn \u0026\u0026 life \u003c 10) {\n        life += 1;\n    }\n    //灰色階梯\n    if (s.costumeId == 5 \u0026\u0026 s != touchOn) {\n        setTimeout(function() {\n            s.hidden = true;\n        }, 300);\n    }\n\n    touchOn = s;\n\n});\n\nfunction movement() {\n    if (key.right) {\n        if (player.costumeId == 1) {\n            player.costumeId = 2;\n        } else {\n            player.costumeId = 1;\n        }\n    } else if (key.left) {\n        if (player.costumeId == 3) {\n            player.costumeId = 4;\n        } else {\n            player.costumeId = 3;\n        }\n    } else {\n        player.costumeId = 0;\n    }\n}\n\n\n//1. 為什麼 vy = 7 可以讓玩家往上跳？\n//2. 我們是怎麼解決扣一大堆血或是加一大堆血的問題？\n//3. touchOn = s; 為什麼要放在最下面？如果放在中間會怎樣？\n//4. 怎麼做出每個階梯間隔都差 80？\n//5. 怎麼做到讓被隱藏的假木板再重新顯示\n","created_at":"2018-11-02T20:39:09.558+08:00","updated_at":"2019-10-24T13:06:10.683+08:00","name":"小朋友下樓梯 副本","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/47253/89edcce60b8890776f43b51e69f48ea4.jpg"},"parent_id":13412,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":77,"hashid":"wdksp5ww","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}

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