俄羅斯方塊 v2 | JavaScript Programming Project

{"id":187836,"student_id":10,"content":"var bg1 = createSprite('bg.png')\nvar bg2 = createSprite('bg_2.png')\nbg2.layer = 1;\n\nvar moving = []\nvar fixed = []\nvar center;\nvar score = 0;\nvar clock = 0;\nvar level = 0;\n\nvar blocks = [\n    [{x: 5, y: 0}, {x: 6, y: 0}, {x: 7, y: 0}, {x: 510, y: 0}], //長條形\n    [{x: 5, y: 0}, {x: 6, y: 0}, {x: 7, y: 0}, {x: 7, y: -1}], //L形\n    [{x: 5, y: 0}, {x: 6, y: 0}, {x: 7, y: 0}, {x: 7, y: 1}], //反L形\n    [{x: 5, y: 0}, {x: 6, y: 0}, {x: 7, y: 0}, {x: 7, y: 1}], //反L形\n    [{x: 5, y: 0}, {x: 5, y: 1}, {x: 4, y: 1}, {x: 6, y: 1}], //山形\n    [{x: 5, y: 0}, {x: 5, y: 1}, {x: 4, y: 1}, {x: 4, y: 2}], //z形\n    [{x: 5, y: 0}, {x: 5, y: 1}, {x: 6, y: 2}, {x: 6, y: 1}], //反z形\n]\n\non('keydown', 'space', loadBlocks)\non('keydown', 'up', turnRight)\non('keydown', 'down', moveDown)\non('keydown', 'right', moveRight)\non('keydown', 'left', moveLeft)\n\nloadBlocks();\nforever(loop);\n\nfunction loop () {\n    drawText('score:' + score, 50, 30, 'white', 40);\n    drawText('level:' + level, 50, 90, 'white', 40);\n    \n    clock++;\n    if (clock % (40 - 9 * 3) == 0) moveDown()\n    checkGameover();\n}\n\n\nfunction loadBlocks () {\n    var rand1 = Math.floor(Math.random()*blocks.length);\n    var rand2 = Math.floor(Math.random()*6);\n    var pos = blocks[rand1];\n    \n    for (var i=0; i\u003cpos.length; i++) {\n        var b = createSprite('b_0.png','b_1.png','b_2.png','b_3.png','b_4.png','b_5.png')\n        b.costumeId = rand2;\n        b.x = pos[i].x*40 + 20 + 400\n        b.y = pos[i].y*40 + 20 + 50\n        moving.push(b)\n    }\n    \n    center = moving[1]\n}\n\n\nfunction moveUp () {\n    for (var i = 0; i \u003c moving.length; i++) {\n        moving[i].y -= 40\n    }\n}\n\nfunction moveDown () {\n    var rollback = false;\n    for (var i = 0; i \u003c moving.length; i++) {\n        moving[i].y += 40\n        if (moving[i].y \u003e 850 || moving[i].touched(fixed)) {\n            rollback = true;\n        }\n    }\n\n    if (rollback) {\n        moveUp();\n        fixed = fixed.concat(moving);\n        moving.length = 0;\n        loadBlocks();\n        checkLines();\n    }\n}\n\nfunction moveRight () {\n    var rollback = false;\n    for (var i = 0; i \u003c moving.length; i++) {\n        moving[i].x += 40\n        if (moving[i].x \u003e 800 || moving[i].touched(fixed)) {\n            rollback = true;\n        }\n    }\n\n    if (rollback) moveLeft();\n}\n\nfunction moveLeft () {\n    var rollback = false;\n    for (var i = 0; i \u003c moving.length; i++) {\n        moving[i].x -= 40\n        if (moving[i].x \u003c 400 || moving[i].touched(fixed)) {\n            rollback = true;\n        }\n    }\n\n    if (rollback) moveRight();\n}\n\n\nfunction turnRight () {\n    var rollback = false;\n    for (var i = 0; i \u003c moving.length; i++) {\n        var b = moving[i];\n        var d = b.distanceTo(center)\n        b.toward(center)\n        b.stepForward(d)\n        b.direction += 90\n        b.stepForward(d)\n        b.direction = 90;\n        if (moving[i].x \u003c 400 || moving[i].x \u003e 800) rollback = true;\n    }\n    if (rollback) turnRight();\n}\n\n\nfunction checkLines () {\n    var line = 0;\n    for (var i = 19; i \u003e= 0; i--) {\n        var count = 0;\n        for (var j = 0; j \u003c fixed.length; j++) {\n            var floor = Math.floor(fixed[j].y / 40)\n            if (i == floor) count++;\n        }\n        if (count == 10) {\n            line += 1;\n            eraseLine(i);\n            i++;\n        }\n    }\n    \n    if (line == 1) score += 10\n    if (line == 2) score += 50\n    if (line == 3) score += 100\n    if (line == 4) score += 300\n    \n    level = Math.floor(score / 100)\n    if (level \u003e 9) level = 9\n}\n\nfunction eraseLine (f) {\n    for (var i = 0; i \u003c fixed.length; i++) {\n        b = fixed[i];\n        var floor = Math.floor(b.y / 40)\n        if (f == floor) {\n            b.destroy()\n            fixed.splice(i, 1)\n            i--;\n        }\n        if (b.y / 40 \u003c f) b.y += 40;\n    }\n}\n\nfunction checkGameover () {\n    for (var i = 0; i \u003c fixed.length; i++) {\n        if (fixed[i].y \u003c 90) {\n            stop();\n            drawText('gameover', 400, 400, 'white', 120)        \n        }\n    }\n}","created_at":"2020-09-02T14:47:54.477+08:00","updated_at":"2020-09-02T14:51:52.845+08:00","name":"俄羅斯方塊 v2","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/187836/81c01a9f831a2284fee8a45f9d68688e.jpg"},"parent_id":187831,"plugin":"Game.set({\n    width: 1200,\n    height: 900,\n})","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":393,"hashid":"5j3sgvkp","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}

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