彈力球 - 開始後用滑鼠點擊舞台以啟用按鍵，重整畫面即可重新遊戲。 | JavaScript 程式專案

{"id":503849,"student_id":2589,"content":"","created_at":"2023-03-09T12:21:34.315+08:00","updated_at":"2023-03-09T13:45:50.990+08:00","name":"彈力球 - 開始後用滑鼠點擊舞台以啟用按鍵，重整畫面即可重新遊戲。","language":"javascript","screenshot":{"url":null},"parent_id":2,"plugin":"setBackdrop('bg.jpg');\nvar ball = createSprite(\"ball.png\");\nvar p2 = createSprite({\n    costumes: \"blue.jpg\",\n    x: 10,\n    y: 250\n});\nvar p1 = createSprite({\n    costumes: \"orange.jpg\",\n    x: 631,\n    y: 250\n});\n// =================================//\nvar score_left = 0;\nvar score_right = 0;\nvar speed = 5;\nforever(function() {\n \tball.stepForward(speed);\n    if(ball.y \u003c 0 || ball.y \u003e 480) {\n    \tball.direction = -ball.direction - 180;\n    }\n    if(ball.touched(p2) || ball.touched(p1)) {\n    \tball.direction = -ball.direction + Math.random()*15;\n        speed = speed + 0.5;\n        sound.play('BonusCube.mp3');\n    }\n    if(key.up) {\n        p1.y = p1.y - 10;\n    }\n    if(key.down) {\n        p1.y = p1.y + 10;\n    }\n    if(key.w) {\n        p2.y = p2.y - 10;\n    }\n    if(key.s) {\n        p2.y = p2.y + 10;\n    }\n    if(ball.x \u003c 0) {\n        score_right = score_right + 1;\n        ball.direction = 270;\n    }\n    if(ball.x \u003e 640) {\n        score_left = score_left + 1;\n        ball.direction = 90;\n    }\n    if(ball.x \u003c 0 || ball.x \u003e 640) {\n        ball.x = 320;\n        ball.y = 240;\n        speed = 5;\n    }\n    print(score_left, 30, 20, '#157df9', 40);\n    print(score_right, 580, 20, '#fd7e24', 40);\n});\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":63,"hashid":"meys6enkp","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}