星際坦克 | JavaScript 程式專案

{"id":12619,"student_id":104,"content":"var aim = createSprite(\"aim.png\");\nvar tank = createSprite(\"tank.png\");\nvar bullets = [];\nvar enemies = [];\nvar clock = 0;\nvar canCreateEnemy = true;\nvar enemyNum = 3; //該產生的鬼針星數量\nvar currentEnemyNum = 0; //目前畫面中的鬼針星數量\nvar score = 0;\n//產生鬼針星敵人\nfunction createEnemy(){\n    var enemy = createSprite(\"enemy.png\");\n    if(Math.random() \u003e 0.5){\n        enemy.x = 10;\n    }else{\n        enemy.x = 630;\n    }\n    if(Math.random() \u003e 0.5){\n        enemy.y = 10;\n    }else{\n        enemy.y = 470;\n    }\n    enemy.direction = Math.random() * 360;\n\n    enemy.forever(function(){\n    enemy.stepForward(3);\n    if(enemy.x \u003e 630){\n        enemy.direction = (Math.random() * 180) + 180;\n    }if(enemy.x \u003c 10){\n        enemy.direction = Math.random() * 180;\n    }if(enemy.y \u003e 470){\n        enemy.direction = (Math.random() * 180) + 270;\n    }if(enemy.y \u003c 10){\n        enemy.direction = (Math.random() * 180) + 90;\n    }\n    enemies.push(enemy);\n});\n    enemy.on(\"touch\", bullets, function(){\n        for(var i=0; i\u003cbullets.length; i++){\n            if(bullets[i].touched(enemy)){\n                bullets[i].destroy();\n                bullets.splice(i, 1);\n            }\n        }\n        enemy.destroy();\n        currentEnemyNum = currentEnemyNum - 1;\n        score = score + 1;\n    })   \n}\n\ncreateEnemy();\n\nforever(function(){\n    clock++;\n    if(cursor.left \u0026\u0026 clock%10 == 0){\n        var bullet = createSprite(\"bullet.png\");\n        bullet.x = tank.x;\n        bullet.y = tank.y;\n        bullet.direction = tank.direction;\n        bullet.forever(function(){\n        /* Do this every tick */\n            bullet.stepForward(8);\n        });\n        sound.play(\"Laser Shot.mp3\");\n        bullets.push(bullet);\n    }\n    aim.x = cursor.x;\n    aim.y = cursor.y;\n    tank.toward(aim);\n\n    if(canCreateEnemy){\n        createEnemies(enemyNum);\n        currentEnemyNum = enemyNum;\n        enemyNum = enemyNum + 1;\n    }\n    if(currentEnemyNum == 0){\n        canCreateEnemy = true;\n    }\n    print(\"Score: \" + score, 20, 20, \"white\", 20);\n    \n});\n\nfunction createEnemies(enemyNum){\n    for (var i=0; i \u003c enemyNum; i++){\n         createEnemy();\n    }\n    canCreateEnemy=false;\n}\n\n","created_at":"2017-09-22T11:33:28.631+08:00","updated_at":"2019-10-24T22:34:43.420+08:00","name":"星際坦克","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/12619/c5b0036cccf8a48f40ca0abcb6c9e5a9.jpg"},"parent_id":11653,"plugin":"\nwhen(\"holding\",\"w\",function(){\n    tank.y = tank.y - 3;\n})\nwhen(\"holding\",\"a\",function(){\n    tank.x = tank.x - 3;\n})\nwhen(\"holding\",\"s\",function(){\n    tank.y = tank.y + 3;\n})\nwhen(\"holding\",\"d\",function(){\n    tank.x = tank.x + 3;\n})\nsetBackdrop(\"black\");\nsound.play(\"background.mp3\");\nsound.loop = true;\nforever(function(){\n\n    if(tank.x\u003e630){\n        tank.x=630;\n    }\n    if(tank.x\u003c10){\n        tank.x=10;\n    }\n    if(tank.y\u003e470){\n        tank.y=470;\n    }\n    if(tank.y\u003c10){\n        tank.y=10;\n    }\n})\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":100,"hashid":"qmds8dpn","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}