太空侵略者 | JavaScript Programming Project

{"id":233662,"student_id":10,"content":"setBackdrop('black')\nlet player = createSprite('ship.png')\nlet leader = createSprite('redInvader.png', 'redInvader.png', 'redInvader.png', 'redInvader.png')\nlet bullet = createSprite('bullet.png')\nlet enemies = []\nlet enemies_bullets = []\nlet clock = 0\nlet life = 10\nlet count = 0;\nlet vx = 8;\nlet score = 0;\n\nleader.y = 45;\nplayer.moveTo(600, 800)\nbullet.moveTo(player)\ncreateSound('bgm.mp3', true)\ninit();\n\nplayer.scale = leader.scale = 1.4;\n\nfunction loop() {\n    clock += 0.5\n    updatePlayer();\n    updateEnemies();\n    updateLeader();\n    updateBullets();\n    updateInfo();\n}\n\nfunction init () {\n    enemies.length = 0;\n    count = 0;\n    clock = 0;\n    leader.hidden = false;\n    leader.costumeId = 0;\n    for (let x = 0; x \u003c 10; x++) {\n        for (let y = 0; y \u003c 5; y++) {\n            if (y % 2 == 0) e = createSprite('invader_a1.png', 'invader_a2.png')\n            else e = createSprite('invader_b1.png', 'invader_b2.png')\n            e.x = x * 90 + 45;\n            e.y = y * 45 + 112.5;\n            e.scale = 1.4;\n            enemies.push(e);\n        }\n    }\n}\n\nfunction updatePlayer () {\n    if (key.right) player.x += 4\n    if (key.left) player.x -= 4\n    if (key.up \u0026\u0026 bullet.hidden == true) {\n        bullet.hidden = false;\n        bullet.moveTo(player);\n        createSound('shot.mp3');\n    }\n    bullet.y -= 13\n    if (bullet.y \u003c 0) bullet.hidden = true;\n}\n\nfunction updateEnemies() {\n    for (let i = 0; i \u003c enemies.length; i++) {\n        let e = enemies[i];\n        if (clock % 780 \u003c 300) e.x += 0.5\n        else if (clock % 780 \u003c 390) e.y += 0.5\n        else if (clock % 780 \u003c 690) e.x -= 0.5\n        else e.y += 0.5\n\n        if (bullet.touched(e)) {\n            e.destroy();\n            bullet.hidden = true;\n            createSound('boom.mp3');\n            count++;\n            score += 10;\n        }\n        e.costumeId = Math.floor(clock / 30) % 2;\n    }\n}\n\nfunction updateBullets () {\n    for (let i = 0; i \u003c enemies_bullets.length; i++) {\n        let s = enemies_bullets[i]\n        s.y += 10;\n        if (s.touched(player)) {\n            life -= 1\n            s.destroy()\n        }\n    }\n}\n\nfunction updateLeader() {\n    leader.x += vx;\n    if (leader.x \u003c -100) vx = +8;\n    if (leader.x \u003e 1300) vx = -8;\n    if (leader.touched(bullet)) {\n        leader.costumeId += 1;\n        createSound('boom.mp3')\n    }\n    if (leader.costumeId == 3 \u0026\u0026 leader.hidden == false) {\n        leader.hidden = true;\n        score += 300;\n    }\n    if (Math.random() \u003c 0.05 \u0026\u0026 leader.hidden == false) {\n        let s = createSprite('bullet.png')\n        s.moveTo(leader)\n        enemies_bullets.push(s)\n    }\n}\n\nfunction updateInfo () {\n    if (count == 50 \u0026\u0026 leader.hidden) init();\n    if (life \u003c= 0) stop()\n    drawText('life:' + life, 40, 40, 'white', 40);\n    drawText('score:' + score, 40, 50, 'white', 40);\n}\n\nforever(loop)","created_at":"2021-03-08T17:59:02.701+08:00","updated_at":"2022-02-16T15:04:47.638+08:00","name":"太空侵略者","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/233662/f8ec607c541d08cc0d4099dfda555d71.jpg"},"parent_id":2,"plugin":"Game.set({\n    width: 1200, height: 900\n})","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":375,"hashid":"4y3sg33vm","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}

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