雪球大戰（簡易版） | JavaScript 程式專案

{"id":326069,"student_id":10,"content":"setBackdrop(\"bg.png\");\nlet player = createSprite('r_0.png', 'r_1.png', 'r_2.png', 'r_3.png');\nlet myBall = createSprite('ball.png');\nlet levels = createSprite('0.png', '1.png', '2.png', '3.png', '4.png', '5.png', '6.png', '7.png', '8.png', '9.png', '10.png', '11.png', '12.png');\nlet result = createSprite('r0.png', 'r1.png', 'r2.png', 'r3.png', 'r4.png', 'r5.png', 'r6.png', 'r7.png', 'r8.png', 'r9.png', 'r10.png', 'r11.png', 'r12.png');\nlet enemies = [];\nlet timer = [];\nlet balls = [];\nlet life = 3;\nlet level = 0;\nmyBall.scale = 0.5;\nplayer.scale = 0.75;\n\nplayer.x += 1300;\nresult.hidden = true;\n\nplayer.layer = 2;\nlevels.layer = 3;\nresult.layer = 4;\n\nfor (let i = 0; i \u003c 50; i++) {\n    let e = createSprite(\"g_0.png\", \"g_1.png\", \"g_2.png\", \"g_3.png\", \"g_4.png\", \"g_5.png\", \"g_6.png\", \"g_7.png\");\n    e.rotationStyle = 'fixed';\n    e.scale = 0.75;\n    e.x += 1300;\n    enemies.push(e);\n}\n\nlevels.on('click', reset);\n\nfunction reset () {\n    level += 1;\n    myBall.hidden = true;\n    for (let i = 0; i \u003c 50; i++) {\n        let e = enemies[i];\n        e.x = Math.random() * 900;\n        e.y = Math.random() * 900;\n        e.costumeId = 0;\n        e.layer = 0;\n        e.direction = Math.floor(Math.random() * 4) * 90 + 45;\n        timer[i] = Math.floor(Math.random() * 200) + 180;\n        e.hidden = i \u003e= level * 3;\n\n        if (e.x + e.y \u003e 900) {\n            let diff = e.x + e.y - 900;\n            e.move(-diff, -diff);\n        }\n    }\n    levels.hidden = true;\n}\n\nfunction gameloop () {\n    if (levels.hidden \u0026\u0026 result.hidden) {\n        updatePlayer();\n        updateMyBall();\n        enemies.forEach(updateEnemy);\n        balls.forEach(updateBall);\n        checkIsGameover();\n    }\n    if (levels.y \u003c 450) levels.y += 30;\n    if (result.y \u003c 450) result.y += 30;\n}\n\nfunction updateMyBall () {\n    if (cursor.isDown) {\n        myBall.moveTo(player);\n        myBall.hidden = false;\n    }\n    player.costumeId = cursor.isDown ? 1 : 0;\n\n    if (cursor.isDown == false) {\n        myBall.move(-20, -20);\n    }\n}\n\nfunction updateEnemy (e, index) {\n\n    timer[index] -= 1;\n    let t = timer[index];\n\n    if (e.costumeId == 7) {\n        t = -1;\n    }\n    if (t \u003e 180) {\n        e.stepForward(3);\n        e.costumeId = Math.floor((e.x + e.y) / 50) % 2;\n    }\n    if (t == 180) {\n        e.costumeId = 2;\n    }\n    if (t == 120) {\n        e.costumeId = 3;\n    }\n    if (t == 60 \u0026\u0026 e.hidden == false) {\n        e.costumeId = 4;\n        createBall(e.x, e.y);\n    }\n    if (t == 0) {\n        timer[index] = Math.floor(Math.random() * 200) + 180;\n        e.costumeId = 0;\n        e.direction = Math.floor(Math.random() * 4) * 90 + 45;\n    }\n\n    if (e.x \u003c 50) e.x = 50;\n    if (e.y \u003c 50) e.y = 50;\n    if (e.x + e.y \u003e 900) {\n        let diff = e.x + e.y - 900;\n        e.move(-diff / 2, -diff / 2);\n    }\n\n    if (e.touched(myBall) \u0026\u0026 e.costumeId != 7) {\n        e.costumeId = 7;\n        e.layer = -1;\n        myBall.hidden = true;\n    }\n}\n\nfunction updatePlayer () {\n    player.moveTo(cursor);\n    if (cursor.x + cursor.y \u003c 1200 \u0026\u0026 player) {\n        let diff = 1200 - cursor.x - cursor.y;\n        player.x += diff / 2;\n        player.y += diff / 2;\n    }\n}\n\nfunction updateBall (b) {\n    b.x += 10;\n    b.y += 10;\n    if (b.x \u003e 1200 || b.y \u003e 900) {\n        b.destroy();\n    }\n    if (b.touched(player)) {\n        player.costumeId = 3;\n        result.hidden = false;\n        result.costumeId = levels.costumeId;\n        result.y = -450;\n    }\n}\n\nfunction createBall (x, y) {\n    let ball = createSprite('ball.png');\n    ball.x = x;\n    ball.y = y;\n    ball.scale = 0.5;\n    balls.push(ball);\n}\n\nfunction checkIsGameover () {\n    let count = 0;\n    for (let i = 0; i \u003c 50; i++) {\n        if (enemies[i].hidden || enemies[i].costumeId == 7) {\n            count += 1;\n        }\n    }\n    if (count == 50) {\n        levels.costumeId = level;\n        levels.hidden = false;\n        levels.y = -450;\n    }\n    print(count);\n}\n\nforever(gameloop);","created_at":"2021-12-14T11:30:07.768+08:00","updated_at":"2021-12-20T15:31:25.756+08:00","name":"雪球大戰（簡易版）","language":"javascript","screenshot":{"url":"https://cdn7.koding.school/uploads/project/screenshot/326069/b230fa3bcc0fafe3f75ee57f07ce202f.jpg"},"parent_id":2,"plugin":"Game.set({width: 1200, height: 900})","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":182,"hashid":"kdms6py9j","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}