射擊叩叮 | JavaScript 程式專案

{"id":9587,"student_id":7,"content":"setBackdrop(\"bg.png\", -20, 0,900, 480);\n\nvar settings = {\n    minSpeed: 2,\n    maxSpeed: 5,\n    rotateSpeed: 0.8,\n    ejectedSpeed: 8\n};\n\nvar currentArrow = null;\nvar currentDirection = 0;\nvar combo = 0;\nvar score = 0;\nvar kodings = [];\n\nfunction createKoding() {\n    var koding = createSprite({\n        y: 50,\n        x: Math.random() * 640,\n        scale: 0.3,\n        costumes: [\"1.svg\", \"2.svg\"],\n    });\n    var direction = Math.floor(Math.random() * 2); // 起始方向\n    var moveSpeed = settings.minSpeed + (settings.maxSpeed - settings.minSpeed) * Math.random();\n    if (direction == 1) {\n        moveSpeed *= -1;\n        koding.costumeId = 1\n    }\n\n    koding.forever(function(){\n        if (this.x \u003e 640 || this.x \u003c 0) {\n            moveSpeed *= -1 // 改變方向\n            if (this.costumeId === 1) {\n                this.costumeId = 0;\n            } else {\n                this.costumeId = 1;\n            }\n        }\n        this.x += moveSpeed;\n    });\n\n    return koding;\n}\n\nfunction reloadArrow() {\n    var arrow = createSprite({\n        y: 480,\n        x: 320,\n        scale: 1,\n        direction: currentDirection,\n        costumes: [\"arrow.png\"],\n    });\n    arrow.forever(function(){\n        if(!this.ejected) {\n            if (currentDirection \u003e= 45 || currentDirection \u003c= -45) {\n                settings.rotateSpeed *= -1;\n            }\n            currentDirection += settings.rotateSpeed;\n            this.direction = currentDirection;\n        } else {\n            this.stepForward(settings.ejectedSpeed);\n            if(this.y \u003c -80) {\n                this.destroy();\n                combo = 0;\n            }\n        }\n    });\n\n    arrow.on('touch', kodings, function(koding){\n        koding.destroy();\n        this.destroy();\n        kodings.push(createKoding())\n        combo++;\n        score += 100;\n    });\n    return arrow\n}\n\n// Initialize\nfor(var i = 0; i \u003c 5; i++) {\n    kodings.push(createKoding());\n}\ncurrentArrow = reloadArrow();\n\nforever(function(){\n    print(combo + ' Combos', 10, 460 - 20*combo, 'black', 20*combo);\n    print('得分： '+ score, 500, 460);\n});\n\nwhen('click', function() {\n    if (!currentArrow.ejected) {\n        currentArrow.ejected = true;\n        currentArrow = reloadArrow();\n    }\n});","created_at":"2017-03-01T20:52:04.729+08:00","updated_at":"2019-11-11T15:28:17.587+08:00","name":"射擊叩叮","language":"javascript","screenshot":{"url":"https://cdn3.koding.school/uploads/project/screenshot/9587/879afbfa252e1177ad5d94706244d321.jpg"},"parent_id":2,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[119,1934],"is_featured":false,"views":430,"hashid":"zpesjdve","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}