火箭降落 | JavaScript 程式專案

{"id":17344,"student_id":871,"content":"setBackdrop('bg.jpg');\nvar platform = createSprite(\"platform.png\");\nvar rocket = createSprite([\"rocket.png\",\"bomb.png\"]);\nrocket.x = 50;\nrocket.y = 50;\nplatform.x = 500;\nplatform.y =450;\nrocket.direction =0;\nvar vx = 0;\nvar vy = 0;\nvar fuel = 99999;\nforever(function() {\n    if (rocket.touched(platform)) {\n        if (vx ||vy \u003e 0.6 ||vx \u003c -0.6){\n            rocket.costumeId = 1;\n        }\n        stop();\n    }\n    rocket.x += vx;\n    rocket.y += vy;\n    vy +=0.06;\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    print(fuel, 30, 30, 'black', 30);\n    rocket.direction = vx*10;\n    if (rocket.x \u003e 640|| rocket.x \u003c0){\n        rocket.costumeId = 1;\n        stop();\n    }\nif (rocket.y \u003e 480|| rocket.y \u003c0){\n        rocket.costumeId = 1;\n        stop();\n    }\n    \n\n\n\n\n\n});\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-11-06T21:03:36.673+08:00","name":"火箭降落","language":"javascript","screenshot":{"url":"https://cdn0.koding.school/uploads/project/screenshot/17344/41b08b3ab1595c63f86acebabd2c1613.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":208,"hashid":"9ygspkdw","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}