波以爾定律 | 程式專案 | 橘蘋學習平台

{"id":63750,"student_id":70,"content":"# 引入遊戲模組：\nimport game\nimport random\n\nEXAM_TIME = 400\nDIFFUSION_TIME = 200\nN = 100\n\nparticles = []\ncollisions = 0\ntime = 0\n\nbump = game.createSprite(\"bump.png\")\nbump.size = 2\nbump.y = 120 # 可試試 240, 360 的差別\n\n\nfor i in range(0,N):\n    particle = game.createSprite(\"particle.png\")\n    particle.y = 400\n    particle.direction = random.random()*360\n    particle.life = 0\n    particles.append(particle)\n\ndef update():\n    global collisions, time\n    \n    time += 1\n    if time\u003e=DIFFUSION_TIME+EXAM_TIME:\n        game.stop()\n        \n    for p in particles:\n        if p.life%4==0:\n            p.direction += 90 - random.random()*180\n        # 可試試不同的速度 (2, 4, 8, 12 ... etc)\n        p.stepForward(4)\n        p.life += 1\n        if p.touched(bump):\n            p.direction -= 180\n            p.y += 4\n            if time\u003e=DIFFUSION_TIME:\n                collisions += 1\n        p.bounceEdge()\n    \n    game.print(\"Collisions: \"+str(collisions),20,20) \n    game.print(\"經過時間: \"+str(time),20,40) \n\n# 重複不斷執行 update 函式：\ngame.forever(update)\n\n","created_at":"2019-04-22T14:01:41.305+08:00","updated_at":"2021-10-15T20:03:51.843+08:00","name":"波以爾定律","language":"python","screenshot":{"url":"https://cdn3.koding.school/uploads/project/screenshot/63750/9a2602154c461dab9ff9c73cf51c9a62.jpg"},"parent_id":4,"plugin":"game.set({\n    \"width\": 640,\n    \"height\": 480\n});","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":250,"hashid":"meysqdzj","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}