火箭降落 | JavaScript 程式專案

{"id":22285,"student_id":1444,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\", \"bomb.png\"]);\nvar fuel = 500;\n\nplatform.x = 500;\nplatform.y = 450;\nrocket.x = 50;\nrocket.y = 50;\n\nvar vy = 0;\nvar vx = 0;\n\nforever(function() {\n    if (rocket.touched(platform)) {\n        if (vy \u003e 1.0 || vx \u003e 0.6 || vx \u003c -0.6)//火箭下墜速度與頃斜程度\n        {\n            rocket.costumeId = 1;\n        }\n        stop();\n    }\n\n    if (rocket.x \u003e 650 || rocket.x \u003c 0 || rocket.y \u003c 0) {\n        rocket.costumeId = 1;\n        stop();\n    }\n\n    if (fuel \u003e 0) {\n        if (key.up) {\n            vy -= 0.1;\n            fuel -= 1;\n        }\n        if (key.right) {\n            vx += 0.1;\n            fuel -= 1;\n        }\n        if (key.left) {\n            vx -= 0.1;\n            fuel -= 1;\n        }\n    }\n\n    vy += 0.06;\n    rocket.y += vy;\n    rocket.x += vx;\n    rocket.direction = vx * 10;\n    print(\"fuel: \"+ fuel, 10, 10, \"red\", 20);\n    print(\"vy: \"+ vy, 10, 40, \"red\", 20);\n        // print(\"vy: \"+ Math.floor(vy*100)/100, 10, 40, \"red\", 20);\n\n});\n\n\n\n\n\n","created_at":"2018-02-14T17:39:26.148+08:00","updated_at":"2019-10-09T12:35:33.778+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn5.koding.school/uploads/project/screenshot/22285/bfc7c48c91763e185f0ce4911d030ba9.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":158,"hashid":"wdks5zem","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}