塔防 | JavaScript Programming Project | OrangeApple Learning Platform

{"id":226584,"student_id":10,"content":"setBackdrop(\"black\");\n\nvar btn_1 = createSprite('tower_1.png');\nvar btn_2 = createSprite('tower_2.png');\nvar btn_3 = createSprite('tower_3.png');\nvar btn_start = createSprite('tower_1.png');\nvar btn_levelup = createSprite('tower_1.png');\n\n\nbtn_1.moveTo(30, 870);\nbtn_2.moveTo(90, 870);\nbtn_3.moveTo(150, 870);\nbtn_start.moveTo(1170, 870);\nbtn_levelup.moveTo(1170, 30);\nbtn_1.on('click', buildTowerA);\nbtn_2.on('click', buildTowerB);\nbtn_3.on('click', buildTowerC);\nbtn_start.on('click', nextLevel);\nbtn_levelup.on('click', levelup);\n\n\nfor (var x = 0; x \u003c 20; x++) {\n    for (var y = 0; y \u003c 14; y++) {\n        if (x % 5 != 4 \u0026\u0026 y % 5 != 4) {\n            var t = createSprite('base.png', 'tower_1.png', 'tower_2.png', 'tower_3.png');\n            t.x = x * 60 + 30;\n            t.y = y * 60 + 30;\n            towers.push(t);    \n        }\n    }\n}\n\nfunction updateEnemies () {\n    for (var i=0; i\u003cenemies.length; i++) {\n        var e = enemies[i];\n        \n        if (e.life \u003c 2400 \u0026\u0026 e.opacity \u003e 0) {\n            e.stepForward(e.speed);\n            e.life += e.speed;\n        } else {\n            enemies.splice(i, 1);\n            i -= 1;\n            e.destroy();\n        }\n        if (e.life \u003c 900) e.direction = 90;\n        else if (e.life \u003c 1200) e.direction = 180;\n        else if (e.life \u003c 1800) e.direction = 270;\n        else e.direction = 0;\n    }\n}\n\nfunction attact () {\n    for (var i=0; i\u003ctowers.length; i++) {\n        \n        var t = towers[i];\n        \n        if (t.costumeId == 1) {\n            for (var j=0; j\u003cenemies.length; j++) {\n                e = enemies[j];\n                \n                if (e.distanceTo(t) \u003c t.range) {\n                    e.opacity -= 0.01;\n                    pen.color = 'red';\n                    pen.size = 2;\n                    pen.drawLine(t.x, t.y, e.x, e.y);\n                    t.toward(e);\n                    break;\n                }\n            }\n        }\n        \n        if (t.costumeId == 2) {\n            for (var j=0; j\u003cenemies.length; j++) {\n                e = enemies[j];\n                \n                if (e.distanceTo(t) \u003c t.range) {\n                    e.opacity -= 0.0001;\n                    pen.color = 'blue';\n                    pen.size = 1;\n                    pen.drawLine(t.x, t.y, e.x, e.y);\n                    t.toward(e);\n                }\n            }\n        }\n    }\n}\n\nfunction gameloop() {\n    for (var i=0; i \u003c towers.length; i++) {\n        t = towers[i];\n        if (cursor.isDown \u0026\u0026 t.touched(cursor)) {\n            select = t;\n        }\n        \n        if (select) {\n            t.opacity = 0.5;\n        } else {\n            t.opacity = 1;\n        }\n    }\n    if (select) {\n        select.opacity = 1;\n        pen.color = 'white';\n        pen.size = 2;\n        pen.drawCircle(select.x, select.y, select.range || 0);\n    }\n}\n\nfunction levelup () {\n    if (select) {\n        if (select.costumeId == 0) {\n            select.scale *= 1.1;\n            select.range += 100;\n        }\n        if (select.costumeId == 1) {\n            select.scale *= 1.1;\n            select.range += 100;\n        }\n        if (select.costumeId == 2) {\n            select.scale *= 1.1;\n            select.range += 100;\n        }\n    }\n}\n\nfunction nextLevel () {\n    if (level == 0) {\n        for (var i=0; i\u003c30; i++) {\n            setTimeout(createA, i * 500);\n        }    \n    }\n    if (level == 1) {\n        for (var i=0; i\u003c30; i++) {\n            setTimeout(createB, i * 500);\n        }    \n    }\n    \n}\n\nfunction createA () {\n    var a = createSprite('ant.png');\n    a.x = -30;\n    a.y = 270;\n    a.speed = 2;\n    a.life = 0;\n    enemies.push(a);\n}\n\nfunction createB () {\n    var a = createSprite('ant.png');\n    a.x = -30;\n    a.y = 270;\n    a.speed = 2;\n    a.life = 0;\n    enemies.push(a);\n}\n\nfunction buildTowerA () {\n    if (select) {\n        select.costumeId = 1;\n        select.range = 300;\n        select.attact\n    }\n    select = undefined;\n}\n\nfunction buildTowerB () {\n    if (select) {\n        select.costumeId = 2;\n        select.range = 150;\n    }\n    select = undefined;\n}\n\nfunction buildTowerC () {\n    if (select) {\n        select.costumeId = 3;\n        select.range = 300;\n    }\n    select = undefined;\n}\n\nforever(gameloop);\nforever(attact);\nforever(updateEnemies);\n\n","created_at":"2021-02-03T15:59:47.193+08:00","updated_at":"2021-02-04T11:05:01.473+08:00","name":"塔防","language":"javascript","screenshot":{"url":"/uploads/project/screenshot/226584/0e6b6342c4103b57588a23dd8353bbef.jpg"},"parent_id":2,"plugin":"Game.set({width: 1200, height: 900});","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":360,"hashid":"kdms6832n","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}