火箭降落 | JavaScript 程式專案

{"id":12228,"student_id":208,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nrocket.x = 50;\nrocket.y = 50;\nrocket.direction = 0\nplatform.x = 565;\nplatform.y = 420;\nvar vy = 0\nvar vx = 0\nvar fuel = 500\nforever(function() {\n    vy = vy +0.06\n    rocket.y = rocket.y +vy;\n    rocket.x = rocket.x +vx\n    rocket.direction = vx*10\n    if (rocket.x \u003e 640||rocket.y \u003e 480){\n        rocket.costumeId = 1\n        stop();\n    }\n    if (fuel \u003e 0){\n        if (key.up){\n            vy = vy -0.1\n        }\n        if (key.left){\n            vx = vx -0.1\n        }\n        if (key.right){\n            vx = vx +0.1\n        }\n        if (key.right || key.left || key.up){\n            fuel = fuel -1;\n        }\n    }\n    print(fuel,30,30,\"red\",30)\n    if (rocket.touched(platform)) {\n        if (vx \u003e 3|| vy \u003e 3){\n            rocket.costumeId = 1\n        }\n        stop() ;\n    }\n});","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-05-30T01:56:30.241+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn6.koding.school/uploads/project/screenshot/12228/c78bf905fdcbf2595cd48ccc8b0a9489.jpg"},"parent_id":10697,"plugin":"var fire = createSprite(\"fire.png\");\nfire.scale = 0.7;\nforever(function() {\n    if(window.rocket \u0026\u0026 window.platform) {\n        fire.x = rocket.x;\n        fire.y = rocket.y;\n        fire.direction = rocket.direction - 180;\n        fire.stepForward(65);\n        fire.direction = rocket.direction;\n        if(window.rocket \u0026\u0026 (key.up || key.left || key.right) \u0026\u0026 window.fuel\u003e0) {\n            fire.hidden = false;\n        } else {\n            fire.hidden = true;\n        }\n        if(rocket.touched(platform)) {\n            // fire.hidden = true;\n        }\n    }\n});","description":"上、左、右推進火箭\n在料用盡前成功火箭降落在平台上。","note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":79,"hashid":"4y3sgr8r","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}