太空侵略者 | JavaScript Programming Project

{"id":233753,"student_id":10,"content":"let bg = createSprite(\"bg.png\");\nlet player = createSprite(\"player.png\");\nlet laser = createSprite(\"laser_b.png\");\nlet master = createSprite(\"master_0.png\", \"master_1.png\", \"master_2.png\");\nlet info = createSprite(\"info.png\");\nlet lasers = [];\nlet enemies = [];\nlet clock = 0;\nlet level = 0;\nlet count = 0;\nlet vx = 3;\nlet playerLife = 10;\nlet masterLife = 10;\n\nmaster.moveTo(100, 100);\nplayer.moveTo(600, 800);\nlaser.direction = 0;\nlaser.hidden = true;\n// player.direction = 0;\ncreateSound('bgm.mp3');\n\n\nplayer.scale = 0.6;\nmaster.scale = 1.2;\n\n\nfunction gameloop () {\n    if (info.hidden) {\n        updateInfo();\n        updatePlayer();\n        updatePlayerLaser();\n        updateMaster();\n        updateMasterLaser();\n        updateEnemise();\n        updateBackgroud();\n    }\n    if (key.space \u0026\u0026 info.hidden == false) {\n        info.hidden = true;\n        initLevel();\n    }\n    if (level == 4) st \n}\n\nfunction initLevel () {\n    level += 1;\n    count = 0;\n    clock = 0;\n    master.x = 100;\n    master.costumeId = level - 1;\n    master.hidden = false;\n    masterLife = 10;\n    for (let x = 0; x \u003c 10; x++) {\n        for (let y = 0; y \u003c level; y++) {\n            let e = createSprite(\"enemy_0.png\", \"enemy_1.png\", \"enemy_2.png\");\n            e.costumeId = level - 1;\n            e.x = x * 100 + 50;\n            e.y = y * 100 + 200;\n            enemies.push(e);\n        }\n    }\n}\n\nfunction updateInfo () {\n    clock++;\n    drawText('life: ' + masterLife, 10, 10, 'red', 30);\n    drawText('life: ' + playerLife, 10, 850, 'lightblue', 30);\n    drawText('count: ' + count, 150, 850, 'white', 30);\n    drawText('level: ' + level, 310, 850, 'white', 30);\n    if (master.hidden \u0026\u0026 count == level*10) {\n        if (level == 3) {\n            stop();\n            createSprite('completed.png')\n        }\n        else initLevel();\n    }\n    if (playerLife \u003c= 0) {\n        stop();\n        createSprite('failed.png')\n    }\n}\n\n// 更新玩家\nfunction updatePlayer () {\n    if (key.right) player.x += 10;\n    if (key.left) player.x -= 10;\n    if (key.up \u0026\u0026 laser.hidden) {\n        laser.moveTo(player);\n        laser.hidden = false;\n        createSound('laser.mp3')\n    }\n}\n\n// 移動玩家的子彈\nfunction updatePlayerLaser () {\n    laser.stepForward(15);\n    if (laser.y \u003c 0) {\n        laser.hidden = true;\n    }\n    if (laser.touched(master)) {\n        masterLife -= 1;\n        laser.hidden = true;\n        createSound('boom.mp3');\n        if (masterLife \u003c= 0) {\n            master.hidden = true;\n        }\n    }\n}\n\n//更新魔王\nfunction updateMaster() {\n    master.x += vx;\n    if (master.x \u003e 1200 || master.x \u003c 0) vx = -vx;\n    if (Math.random() \u003c 0.02 \u0026\u0026 master.hidden == false) {\n        enemyFire(master);\n        if (level \u003e= 2) enemyFire(master).x += 50;\n    }\n    if (level \u003e= 3 \u0026\u0026 Math.random() \u003c 0.01) {\n        diffusionFire(master);\n    }\n}\n\n// 更新敵人的子彈\nfunction updateMasterLaser () {\n    for (let i=0; i \u003c lasers.length; i++) {\n        let laser = lasers[i];\n        laser.stepForward(5);\n        if (laser.touched(player)) {\n            laser.destroy();\n            playerLife -= 1;\n            createSound('boom.mp3')\n        }\n    }\n}\n\n// 更新敵人的位置\nfunction updateEnemise () {\n    for (let i = 0; i \u003c enemies.length; i++) {\n        let e = enemies[i];\n        if (clock % 440 \u003c 200) e.x += 1;\n        else if (clock % 440 \u003c 220) e.y += 1;\n        else if (clock % 440 \u003c 420) e.x -= 1;\n        else e.y += 1;\n        if (e.touched(laser)) {\n            e.destroy();\n            laser.hidden = true;\n            diffusionFire(e);\n            count += 1;\n            createSound('boom.mp3')\n        }\n    }\n}\n\n// 敵人發射子彈\nfunction enemyFire (enemy) {\n    let laser = createSprite('laser_r.png');\n    laser.moveTo(enemy);\n    laser.direction = 180;\n    lasers.push(laser);\n    return laser;\n}\n\n// 敵人發射發散的子彈\nfunction diffusionFire (enemy) {\n    for (let i=0; i \u003c 8; i++) {\n        let laser = createSprite('laser_r.png');\n        laser.moveTo(enemy);\n        laser.direction = i * 45;\n        lasers.push(laser);\n    }\n}\n\nfunction updateBackgroud() {\n    bg.y += 0.5;\n    if (bg.y \u003e 900) bg.y -= 900;\n}\n\nforever(gameloop);","created_at":"2021-03-10T10:17:42.849+08:00","updated_at":"2021-11-28T16:27:55.419+08:00","name":"太空侵略者","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/233753/b230fa3bcc0fafe3f75ee57f07ce202f.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":"vngsynvy5","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}

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