diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2011/version.md" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2011/version.md"
new file mode 100644
index 0000000..c29dada
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2011/version.md"
@@ -0,0 +1,3 @@
+moon 0.1.20241106 (79e45ae 2024-11-06) ~/.moon/bin/moon
+moonc v0.1.20241106+8f17a3fc7 ~/.moon/bin/moonc
+moonrun 0.1.20241106 (79e45ae 2024-11-06) ~/.moon/bin/moonrun
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/.gitignore" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/.gitignore"
new file mode 100644
index 0000000..b1283a7
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/.gitignore"
@@ -0,0 +1,2 @@
+target/
+.mooncakes/
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/LICENSE" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/LICENSE"
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/LICENSE"
@@ -0,0 +1,202 @@
+
+                                 Apache License
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+
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diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/README.md" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/README.md"
new file mode 100644
index 0000000..6a5244b
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/README.md"
@@ -0,0 +1,36 @@
+# Spaceack/hypotrochoid_emulator
+
+## 内旋轮线模拟器（Hypotrochoid Emulator）
+
+## 介绍
+内旋轮线模拟器，一款`探索`与`发现`的`图形艺术`游戏，通过调整参数，探索参数与图案特点的关联性。
+
+## 玩法
+
+- 按`空格键`开始
+- `X`键 切换轮线颜色
+- `Z`键 显示/隐藏参数菜单
+- `左/右`键选择参数
+- `上/下`键调调整参数数值
+- `F8` 截取图像
+
+## 参数说明
+
+- d: 小圆上固定点到小圆圆心的距离
+- lr: 小圆的半径
+- br: 大圆的半径
+- ti: 旋转次数
+
+```bash
+# install moonbit
+curl -fsSL https://cli.moonbitlang.cn/install/unix.sh | bash
+# install wasm4
+npm install -D wasm4
+# 
+moon update && moon add moonbitlang/wasm4
+# build
+moon build --target wasm 
+# run
+npx wasm4 run target/wasm/release/build/hypotrochoid_emulator.wasm
+
+```
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/moon.mod.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/moon.mod.json"
new file mode 100644
index 0000000..ca03124
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/moon.mod.json"
@@ -0,0 +1,13 @@
+{
+  "name": "Spaceack/hypotrochoid_emulator",
+  "version": "0.1.0",
+  "deps": {
+    "moonbitlang/wasm4": "0.2.2"
+  },
+  "readme": "README.md",
+  "repository": "",
+  "license": "Apache-2.0",
+  "keywords": [],
+  "description": "",
+  "source": "src"
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/hello.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/hello.mbt"
new file mode 100644
index 0000000..9012592
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/hello.mbt"
@@ -0,0 +1,3 @@
+pub fn hello() -> String {
+  "Hello, world!"
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/hello_test.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/hello_test.mbt"
new file mode 100644
index 0000000..e0e3a7d
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/hello_test.mbt"
@@ -0,0 +1,5 @@
+test "hello" {
+  if @lib.hello() != "Hello, world!" {
+    fail!("@lib.hello() != \"Hello, world!\"")
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/moon.pkg.json"
new file mode 100644
index 0000000..6af8789
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/lib/moon.pkg.json"
@@ -0,0 +1,21 @@
+{
+    // "is-main": true,
+    "import": ["moonbitlang/wasm4"],
+    "link": {
+      "wasm-gc": {
+        "exports": ["start", "update"],
+        "import-memory": {
+          "module": "env",
+          "name": "memory"
+        }
+      },
+      "wasm": {
+        "exports": ["start", "update"],
+        "import-memory": {
+          "module": "env",
+          "name": "memory"
+        },
+        "heap-start-address": 6590
+      }
+    }
+  }
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/moon.pkg.json"
new file mode 100644
index 0000000..4ca3231
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/moon.pkg.json"
@@ -0,0 +1,21 @@
+{
+  // "is-main": true,
+  "import": ["moonbitlang/wasm4"],
+  "link": {
+    "wasm-gc": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      }
+    },
+    "wasm": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      },
+      "heap-start-address": 6590
+    }
+  }
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/top.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/top.mbt"
new file mode 100644
index 0000000..8a4e631
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2012/hypotrochoid_emulator/src/top.mbt"
@@ -0,0 +1,232 @@
+enum GameState {
+  GSInit // 初始状态
+  GSGameStart
+}
+
+struct GameStat {
+  mut game_state : GameState
+  mut d : Double
+  mut lr : Double
+  mut br : Double
+  mut revs : Double
+  niter : Double
+  mut color : UInt
+  mut show_args_bar : Bool
+  mut select_arg : UInt
+  rng : @random.Rand
+}
+
+pub struct PrevGamePad {
+  mut button_1 : Bool
+  mut button_2 : Bool
+  mut button_left : Bool
+  mut button_right : Bool
+  mut button_up : Bool
+  mut button_down : Bool
+} derive(Eq, Default)
+
+pub fn butRel(cur_button : Bool, prev_button : Bool) -> Bool {
+  return cur_button && not(prev_button)
+}
+
+pub fn game_init(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_1, prevgp1.button_1) ||
+    butRel(gp1.button_2, prevgp1.button_2) ||
+    butRel(gp1.button_down, prevgp1.button_down) ||
+    butRel(gp1.button_left, prevgp1.button_left) ||
+    butRel(gp1.button_right, prevgp1.button_right) ||
+    butRel(gp1.button_up, prevgp1.button_up) {
+    self.game_state = GSGameStart
+  }
+}
+
+pub fn game_start(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_2, prevgp1.button_2) {
+    self.show_args_bar = not(self.show_args_bar)
+  } else if butRel(gp1.button_1, prevgp1.button_1) {
+    if self.color < 4 {
+      self.color = self.color + 1
+    } else {
+      self.color = 2
+    }
+  } else if butRel(gp1.button_right, prevgp1.button_right) {
+    if self.select_arg < 3 {
+      self.select_arg = self.select_arg + 1
+    } else {
+      self.select_arg = 0
+    }
+  } else if butRel(gp1.button_left, prevgp1.button_left) {
+    if self.select_arg > 0 {
+      self.select_arg = self.select_arg - 1
+    } else {
+      self.select_arg = 3
+    }
+  } else if butRel(gp1.button_up, prevgp1.button_up) {
+    if self.select_arg == 0 && self.d < 30 {
+      self.d = self.d + 1
+    } else if self.select_arg == 1 && self.lr < 30 {
+      self.lr = self.lr + 1
+    } else if self.select_arg == 2 && self.br < 30 {
+      self.br = self.br + 1
+    } else if self.select_arg == 3 && self.revs < 30 {
+      self.revs = self.revs + 1
+    }
+  } else if butRel(gp1.button_down, prevgp1.button_down) {
+    if self.select_arg == 0 && self.d > 1 {
+      self.d = self.d - 1
+    } else if self.select_arg == 1 && self.lr > 1 {
+      self.lr = self.lr - 1
+    } else if self.select_arg == 2 && self.br > 1 {
+      self.br = self.br - 1
+    } else if self.select_arg == 3 && self.br > 1 {
+      self.revs = self.revs - 1
+    }
+  }
+}
+
+let gs : GameStat = GameStat::new()
+
+pub fn GameStat::new() -> GameStat {
+  {
+    game_state: GSInit,
+    d: 30,
+    lr: 24,
+    br: 4,
+    revs: 30,
+    niter: 2000,
+    color: 2,
+    show_args_bar: true,
+    select_arg: 0,
+    rng: @random.new(),
+  }
+}
+
+let prevgp1 : PrevGamePad = {
+  button_1: false,
+  button_2: false,
+  button_down: false,
+  button_left: false,
+  button_right: false,
+  button_up: false,
+}
+
+pub fn update() -> Unit {
+  match gs.game_state {
+    GSInit => gs.game_init()
+    GSGameStart => gs.game_start()
+  }
+  let gp1 = @wasm4.get_gamepad()
+  prevgp1.button_1 = gp1.button_1
+  prevgp1.button_2 = gp1.button_2
+  prevgp1.button_down = gp1.button_down
+  prevgp1.button_left = gp1.button_left
+  prevgp1.button_right = gp1.button_right
+  prevgp1.button_up = gp1.button_up
+}
+
+pub fn start() -> Unit {
+  @wasm4.trace("Hello world!")
+  @wasm4.set_palette(4, @wasm4.rgb(0xf9a875)) // 沙粽
+  @wasm4.set_palette(2, @wasm4.rgb(0xaa337f)) // 陈玫红 Maximum Red Purple
+  @wasm4.set_palette(1, @wasm4.rgb(0xC75B7A)) // 暗岩灰
+  @wasm4.set_palette(3, @wasm4.rgb(0xD9ABAB)) // 绿
+}
+
+pub fn draw_game_init(self : GameStat) -> Unit {
+  match self.game_state {
+    GSInit => {
+      @wasm4.text("Hypotrochoid", 30, 10)
+      @wasm4.text("Emulator V1.0", 30, 20)
+      @wasm4.text("Press x to start", 20, 150)
+      hypotrochoid_line(
+        80,
+        80,
+        self.d,
+        self.lr,
+        self.br,
+        self.revs,
+        self.niter,
+        self.color,
+      )
+    }
+    GSGameStart => {
+      if self.show_args_bar {
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 0 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("d:" + self.d.to_string(), 1, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 1 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("lr:" + self.lr.to_string(), 37, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 2 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("br:" + self.br.to_string(), 82, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 3 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("ti:" + self.revs.to_string(), 120, 150)
+      }
+      hypotrochoid_line(
+        80,
+        80,
+        self.d,
+        self.lr,
+        self.br,
+        self.revs,
+        self.niter,
+        self.color,
+      )
+    }
+  }
+}
+
+fn x_coordinate(d : Double, lr : Double, br : Double, theta : Double) -> Double {
+  (br - lr) * @math.cos(theta) + d * @math.cos((br - lr) / lr * theta)
+}
+
+fn y_coordinate(d : Double, lr : Double, br : Double, theta : Double) -> Double {
+  (br - lr) * @math.sin(theta) + d * @math.sin((br - lr) / lr * theta)
+}
+
+fn linspace(start : Double, stop : Double, num : Double) -> Array[Double] {
+  let step : Double = (stop - start) / (num - 1)
+  let value = []
+  for x = 0.0; x < num; x = x + 1 {
+    value.push(start + step * x)
+  } else {
+    return value
+  }
+}
+
+pub fn hypotrochoid_line(
+  offset_x : Int,
+  offset_y : Int,
+  d : Double,
+  lr : Double,
+  br : Double,
+  revs : Double,
+  niter : Double,
+  color : UInt
+) -> Unit {
+  let revs = revs
+  let d = d
+  let lr = lr
+  let br = br
+  let niter = niter
+  let thetas = linspace(0.0, revs * 2.0 * @math.pi, niter)
+  for theta in thetas {
+    let x = (@math.round(x_coordinate(d, lr, br, theta)).to_int() + offset_x).reinterpret_as_uint()
+    let y = (@math.round(y_coordinate(d, lr, br, theta)).to_int() + offset_y).reinterpret_as_uint()
+    @wasm4.set_frame_buffer(y * 160 + x, color)
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/.gitignore" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/.gitignore"
new file mode 100644
index 0000000..b1283a7
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/.gitignore"
@@ -0,0 +1,2 @@
+target/
+.mooncakes/
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/LICENSE" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/LICENSE"
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/LICENSE"
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
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+
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+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+      file or class name and description of purpose be included on the
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/README.md" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/README.md"
new file mode 100644
index 0000000..9245199
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/README.md"
@@ -0,0 +1 @@
+# Spaceack/l_system_emulator
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/moon.mod.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/moon.mod.json"
new file mode 100644
index 0000000..1ed21b8
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/moon.mod.json"
@@ -0,0 +1,14 @@
+{
+  "name": "Spaceack/l_system_emulator",
+  "version": "0.1.0",
+  "deps": {
+    "moonbitlang/wasm4": "0.2.2",
+    "moonbitlang/x": "0.4.11"
+  },
+  "readme": "README.md",
+  "repository": "",
+  "license": "Apache-2.0",
+  "keywords": [],
+  "description": "",
+  "source": "src"
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/hello.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/hello.mbt"
new file mode 100644
index 0000000..9012592
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/hello.mbt"
@@ -0,0 +1,3 @@
+pub fn hello() -> String {
+  "Hello, world!"
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/hello_test.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/hello_test.mbt"
new file mode 100644
index 0000000..e0e3a7d
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/hello_test.mbt"
@@ -0,0 +1,5 @@
+test "hello" {
+  if @lib.hello() != "Hello, world!" {
+    fail!("@lib.hello() != \"Hello, world!\"")
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/moon.pkg.json"
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/lib/moon.pkg.json"
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/moon.pkg.json"
new file mode 100644
index 0000000..50ef7c4
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/moon.pkg.json"
@@ -0,0 +1,21 @@
+{
+  // "is-main": true,
+  "import": ["moonbitlang/wasm4","moonbitlang/x/stack"],
+  "link": {
+    "wasm-gc": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      }
+    },
+    "wasm": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      },
+      "heap-start-address": 6590
+    }
+  }
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/top.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/top.mbt"
new file mode 100644
index 0000000..77c6e75
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2013/l_system_emulator/src/top.mbt"
@@ -0,0 +1,281 @@
+enum GameState {
+  GSInit // 初始状态
+  GSGameStart
+}
+
+struct GameStat {
+  mut game_state : GameState
+  vs : String
+  ps : @hashmap.T[String, String]
+  x : Int
+  y : Int
+  mut tl : Double
+  mut angle : Double
+  mut levels : UInt
+  mut color : UInt
+  mut show_args_bar : Bool
+  mut select_arg : UInt
+}
+
+pub struct PrevGamePad {
+  mut button_1 : Bool
+  mut button_2 : Bool
+  mut button_left : Bool
+  mut button_right : Bool
+  mut button_up : Bool
+  mut button_down : Bool
+} derive(Eq, Default)
+
+pub fn butRel(cur_button : Bool, prev_button : Bool) -> Bool {
+  return cur_button && not(prev_button)
+}
+
+pub fn game_init(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_1, prevgp1.button_1) ||
+    butRel(gp1.button_2, prevgp1.button_2) ||
+    butRel(gp1.button_down, prevgp1.button_down) ||
+    butRel(gp1.button_left, prevgp1.button_left) ||
+    butRel(gp1.button_right, prevgp1.button_right) ||
+    butRel(gp1.button_up, prevgp1.button_up) {
+    self.game_state = GSGameStart
+  }
+}
+
+pub fn game_start(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_2, prevgp1.button_2) {
+    self.show_args_bar = not(self.show_args_bar)
+  } else if butRel(gp1.button_1, prevgp1.button_1) {
+    if self.color < 4 {
+      self.color = self.color + 1
+    } else {
+      self.color = 2
+    }
+  } else if butRel(gp1.button_right, prevgp1.button_right) {
+    if self.select_arg < 2 {
+      self.select_arg = self.select_arg + 1
+    } else {
+      self.select_arg = 0
+    }
+  } else if butRel(gp1.button_left, prevgp1.button_left) {
+    if self.select_arg > 0 {
+      self.select_arg = self.select_arg - 1
+    } else {
+      self.select_arg = 2
+    }
+  } else if butRel(gp1.button_up, prevgp1.button_up) {
+    if self.select_arg == 0 && self.tl < 5 {
+      if self.levels == 5 && self.tl >= 2 {
+
+      } else {
+        self.tl = self.tl + 1
+      }
+    } else if self.select_arg == 1 && self.angle < 100 {
+      self.angle = self.angle + 1
+    } else if self.select_arg == 2 && self.levels < 5 {
+      if (self.tl == 3 || self.tl == 4 || self.tl == 5) && self.levels >= 4 {
+
+      } else {
+        self.levels = self.levels + 1
+      }
+    } 
+  } else if butRel(gp1.button_down, prevgp1.button_down) {
+    if self.select_arg == 0 && self.tl > 1 {
+      self.tl = self.tl - 1
+    } else if self.select_arg == 1 && self.angle > 1 {
+      self.angle = self.angle - 1
+    } else if self.select_arg == 2 && self.levels > 1 {
+      self.levels = self.levels - 1
+    } 
+  }
+
+}
+
+pub fn game_end(self : GameStat) -> Unit {
+
+}
+
+let gs : GameStat = GameStat::new()
+
+pub fn GameStat::new() -> GameStat {
+  {
+    game_state: GSInit,
+    vs: "X",
+    ps: @hashmap.of([("X", "F[-X][+X]FX"), ("F", "FF")]),
+    x: 80,
+    y: 0,
+    tl: 3.0,
+    angle: 35.0,
+    levels: 3U,
+    color: 2,
+    show_args_bar: true,
+    select_arg: 0,
+  }
+}
+
+let prevgp1 : PrevGamePad = {
+  button_1: false,
+  button_2: false,
+  button_down: false,
+  button_left: false,
+  button_right: false,
+  button_up: false,
+}
+
+pub fn update() -> Unit {
+  match gs.game_state {
+    GSInit => gs.game_init()
+    GSGameStart => gs.game_start()
+  }
+  let gp1 = @wasm4.get_gamepad()
+  prevgp1.button_1 = gp1.button_1
+  prevgp1.button_2 = gp1.button_2
+  prevgp1.button_down = gp1.button_down
+  prevgp1.button_left = gp1.button_left
+  prevgp1.button_right = gp1.button_right
+  prevgp1.button_up = gp1.button_up
+}
+
+pub fn start() -> Unit {
+  @wasm4.trace("Hello world!")
+  @wasm4.set_palette(4, @wasm4.rgb(0xf9a875)) // 沙粽
+  @wasm4.set_palette(2, @wasm4.rgb(0xaa337f)) // 陈玫红 Maximum Red Purple
+  @wasm4.set_palette(1, @wasm4.rgb(0xC75B7A)) // 暗岩灰
+  @wasm4.set_palette(3, @wasm4.rgb(0xD9ABAB)) // 绿
+}
+
+pub fn draw_game_init(self : GameStat) -> Unit {
+  match self.game_state {
+    GSInit => {
+      @wasm4.text("L-System Trees", 30, 10)
+      @wasm4.text("Emulator V1.0", 30, 20)
+      @wasm4.text("Press x to start", 20, 150)
+      fractal(80, 8, self.vs, self.ps, 2.0, 35.0, 5, self.color)
+    }
+    GSGameStart => {
+      if self.show_args_bar {
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 0 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("l:" + self.tl.to_string(), 1, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 1 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("a:" + self.angle.to_string(), 45, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 2 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("lv:" + self.levels.to_string(), 100, 150)
+        @wasm4.set_draw_colors(2)
+
+      }
+      fractal(
+        80,
+        1,
+        self.vs,
+        self.ps,
+        self.tl,
+        self.angle,
+        self.levels,
+        self.color,
+      )
+    }
+  }
+}
+
+pub fn generate_string(
+  vs : String,
+  ps : @hashmap.T[String, String],
+  levels : UInt
+) -> String {
+  let mut this_vs : String = vs
+  for i = 0U; i < levels; i = i + 1 {
+    let mut next_rule = ""
+    for v in this_vs {
+      let cv : String = v.to_string()
+      match ps.get(cv) {
+        Some(value) => next_rule = next_rule + value
+        None => next_rule = next_rule + cv
+      }
+    }
+    this_vs = next_rule
+  }
+  this_vs
+}
+
+fn l_system(
+  vs : String,
+  ps : @hashmap.T[String, String],
+  x : Int,
+  y : Int,
+  tl : Double,
+  langle : Double,
+  levels : UInt
+) -> Array[(Int, Int)] {
+  let l_string = generate_string(vs, ps, levels)
+  let mut x = x
+  let mut y = y
+  let coordinates = []
+  let mut angle = 90.0
+  // let  langle = langle
+  let st : @stack.Stack[(Int, Int, Double)] = @stack.Stack::new()
+  fn coord(length : Double, langle : Double) {
+    let rad : Double = langle * @math.pi / 180.0
+    let steps = 2.0
+    for i = 0.0; i < steps + 1; i = i + 1 {
+      let nx = x + @math.round(i * length / steps * @math.cos(rad)).to_int()
+      let ny = y + @math.round(i * length / steps * @math.sin(rad)).to_int()
+      coordinates.push((nx, ny))
+    }
+    x = x + @math.round(length * @math.cos(rad)).to_int()
+    y = y + @math.round(length * @math.sin(rad)).to_int()
+  }
+
+  // @wasm4.trace(l_system)
+  for char in l_string {
+    match char {
+      'F' | 'G' => coord(tl, angle)
+      '+' => angle = angle + langle
+      '-' => angle = angle - langle
+      '[' => st.push((x, y, angle))
+      ']' =>
+        match st.pop() {
+          Some(value) => {
+            x = value.0
+            y = value.1
+            angle = value.2
+          }
+          None => {
+            ()
+            @wasm4.trace("character not found")
+          }
+        }
+      _ => ()
+    }
+  }
+  coordinates
+}
+
+pub fn fractal(
+  offset_x : Int,
+  offset_y : Int,
+  vs : String,
+  ps : @hashmap.T[String, String],
+  tl : Double,
+  angle : Double,
+  levels : UInt,
+  color : UInt
+) -> Unit {
+  let thetas = l_system(vs, ps, offset_x, offset_y, tl, angle, levels)
+  for theta in thetas {
+    let x = theta.0.reinterpret_as_uint()
+    let y = (160 - theta.1).reinterpret_as_uint()
+    @wasm4.set_frame_buffer(y * 160 + x, color)
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/.gitignore" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/.gitignore"
new file mode 100644
index 0000000..b1283a7
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/.gitignore"
@@ -0,0 +1,2 @@
+target/
+.mooncakes/
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/LICENSE" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/LICENSE"
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/LICENSE"
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
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+      the terms of any separate license agreement you may have executed
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+   7. Disclaimer of Warranty. Unless required by applicable law or
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+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+      Work (including but not limited to damages for loss of goodwill,
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+      To apply the Apache License to your work, attach the following
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+   Copyright [yyyy] [name of copyright owner]
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+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
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+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
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+   See the License for the specific language governing permissions and
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diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/README.md" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/README.md"
new file mode 100644
index 0000000..9245199
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/README.md"
@@ -0,0 +1 @@
+# Spaceack/l_system_emulator
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/moon.mod.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/moon.mod.json"
new file mode 100644
index 0000000..1ed21b8
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/moon.mod.json"
@@ -0,0 +1,14 @@
+{
+  "name": "Spaceack/l_system_emulator",
+  "version": "0.1.0",
+  "deps": {
+    "moonbitlang/wasm4": "0.2.2",
+    "moonbitlang/x": "0.4.11"
+  },
+  "readme": "README.md",
+  "repository": "",
+  "license": "Apache-2.0",
+  "keywords": [],
+  "description": "",
+  "source": "src"
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/hello.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/hello.mbt"
new file mode 100644
index 0000000..9012592
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/hello.mbt"
@@ -0,0 +1,3 @@
+pub fn hello() -> String {
+  "Hello, world!"
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/hello_test.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/hello_test.mbt"
new file mode 100644
index 0000000..e0e3a7d
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/hello_test.mbt"
@@ -0,0 +1,5 @@
+test "hello" {
+  if @lib.hello() != "Hello, world!" {
+    fail!("@lib.hello() != \"Hello, world!\"")
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/moon.pkg.json"
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/lib/moon.pkg.json"
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/moon.pkg.json"
new file mode 100644
index 0000000..50ef7c4
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/moon.pkg.json"
@@ -0,0 +1,21 @@
+{
+  // "is-main": true,
+  "import": ["moonbitlang/wasm4","moonbitlang/x/stack"],
+  "link": {
+    "wasm-gc": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      }
+    },
+    "wasm": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      },
+      "heap-start-address": 6590
+    }
+  }
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/top.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/top.mbt"
new file mode 100644
index 0000000..df9b764
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2014/l_system_Hilbert_Curve_emulator/src/top.mbt"
@@ -0,0 +1,276 @@
+enum GameState {
+  GSInit // 初始状态
+  GSGameStart
+}
+
+struct GameStat {
+  mut game_state : GameState
+  vs : String
+  ps : @hashmap.T[String, String]
+  x : Int
+  y : Int
+  mut tl : Double
+  angle : Double
+  mut levels : UInt
+  mut color : UInt
+  mut show_args_bar : Bool
+  mut select_arg : UInt
+}
+
+pub struct PrevGamePad {
+  mut button_1 : Bool
+  mut button_2 : Bool
+  mut button_left : Bool
+  mut button_right : Bool
+  mut button_up : Bool
+  mut button_down : Bool
+} derive(Eq, Default)
+
+pub fn butRel(cur_button : Bool, prev_button : Bool) -> Bool {
+  return cur_button && not(prev_button)
+}
+
+pub fn game_init(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_1, prevgp1.button_1) ||
+    butRel(gp1.button_2, prevgp1.button_2) ||
+    butRel(gp1.button_down, prevgp1.button_down) ||
+    butRel(gp1.button_left, prevgp1.button_left) ||
+    butRel(gp1.button_right, prevgp1.button_right) ||
+    butRel(gp1.button_up, prevgp1.button_up) {
+    self.game_state = GSGameStart
+  }
+}
+
+pub fn game_start(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_2, prevgp1.button_2) {
+    self.show_args_bar = not(self.show_args_bar)
+  } else if butRel(gp1.button_1, prevgp1.button_1) {
+    if self.color < 4 {
+      self.color = self.color + 1
+    } else {
+      self.color = 2
+    }
+  } else if butRel(gp1.button_right, prevgp1.button_right) {
+    if self.select_arg < 2 {
+      self.select_arg = self.select_arg + 1
+    } else {
+      self.select_arg = 0
+    }
+  } else if butRel(gp1.button_left, prevgp1.button_left) {
+    if self.select_arg > 0 {
+      self.select_arg = self.select_arg - 1
+    } else {
+      self.select_arg = 2
+    }
+  } else if butRel(gp1.button_up, prevgp1.button_up) {
+    if self.select_arg == 0 && self.tl < 9 {
+      if self.levels == 5 && self.tl >= 2 {
+
+      } else {
+        self.tl = self.tl + 1
+      }
+    } else if self.select_arg == 1 && self.levels < 4 {
+      
+        self.levels = self.levels + 1
+      
+    } 
+  } else if butRel(gp1.button_down, prevgp1.button_down) {
+    if self.select_arg == 0 && self.tl > 1 {
+      self.tl = self.tl - 1
+    } else if self.select_arg == 1 && self.levels > 1 {
+      self.levels = self.levels - 1
+    } 
+  }
+
+}
+
+
+let gs : GameStat = GameStat::new()
+
+pub fn GameStat::new() -> GameStat {
+  {
+    game_state: GSInit,
+    vs: "A",
+    ps: @hashmap.of([("A", "-BF+AFA+FB-"), ("B", "+AF-BFB-FA+")]),
+    x: 1,
+    y: 1,
+    tl: 2.0,
+    angle: 90.0,
+    levels: 2U,
+    color: 2,
+    show_args_bar: true,
+    select_arg: 0,
+  }
+}
+
+let prevgp1 : PrevGamePad = {
+  button_1: false,
+  button_2: false,
+  button_down: false,
+  button_left: false,
+  button_right: false,
+  button_up: false,
+}
+
+pub fn update() -> Unit {
+  match gs.game_state {
+    GSInit => gs.game_init()
+    GSGameStart => gs.game_start()
+  }
+  let gp1 = @wasm4.get_gamepad()
+  prevgp1.button_1 = gp1.button_1
+  prevgp1.button_2 = gp1.button_2
+  prevgp1.button_down = gp1.button_down
+  prevgp1.button_left = gp1.button_left
+  prevgp1.button_right = gp1.button_right
+  prevgp1.button_up = gp1.button_up
+}
+
+pub fn start() -> Unit {
+  @wasm4.trace("Hello world!")
+  @wasm4.set_palette(4, @wasm4.rgb(0xf9a875)) // 沙粽
+  @wasm4.set_palette(2, @wasm4.rgb(0xaa337f)) // 陈玫红 Maximum Red Purple
+  @wasm4.set_palette(1, @wasm4.rgb(0xC75B7A)) // 暗岩灰
+  @wasm4.set_palette(3, @wasm4.rgb(0xD9ABAB)) // 绿
+}
+
+pub fn draw_game_init(self : GameStat) -> Unit {
+  match self.game_state {
+    GSInit => {
+      @wasm4.set_draw_colors(4)
+      @wasm4.text("L-System", 10, 10)
+      
+      @wasm4.text("Hilbert Curve", 30, 20)
+     
+      @wasm4.text("Emulator V1.0", 40, 30)
+       @wasm4.set_draw_colors(3)
+      @wasm4.text("Press x to start", 20, 150)
+      fractal(50, 40, "A", @hashmap.of([("A", "-BF+AFA+FB-"), ("B", "+AF-BFB-FA+")]), 4.0, 90.0, 4, self.color)
+    }
+    GSGameStart => {
+      if self.show_args_bar {
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 0 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("l:" + self.tl.to_string(), 1, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 1 {
+          @wasm4.set_draw_colors(3)
+        }
+        @wasm4.text("lv:" + self.levels.to_string(), 45, 150)
+        @wasm4.set_draw_colors(2)
+        if self.select_arg == 2 {
+          @wasm4.set_draw_colors(3)
+        }
+
+
+      }
+      fractal(
+        10,
+        20,
+        self.vs,
+        self.ps,
+        self.tl,
+        self.angle,
+        self.levels,
+        self.color,
+      )
+    }
+  }
+}
+
+pub fn generate_string(
+  vs : String,
+  ps : @hashmap.T[String, String],
+  levels : UInt
+) -> String {
+  let mut this_vs : String = vs
+  for i = 0U; i < levels; i = i + 1 {
+    let mut next_rule = ""
+    for v in this_vs {
+      let cv : String = v.to_string()
+      match ps.get(cv) {
+        Some(value) => next_rule = next_rule + value
+        None => next_rule = next_rule + cv
+      }
+    }
+    this_vs = next_rule
+  }
+  this_vs
+}
+
+fn l_system(
+  vs : String,
+  ps : @hashmap.T[String, String],
+  x : Int,
+  y : Int,
+  tl : Double,
+  langle : Double,
+  levels : UInt
+) -> Array[(Int, Int)] {
+  let l_string = generate_string(vs, ps, levels)
+  let mut x = x
+  let mut y = y
+  let coordinates = []
+  let mut angle = 90.0
+  // let  langle = langle
+  let st : @stack.Stack[(Int, Int, Double)] = @stack.Stack::new()
+  fn coord(length : Double, langle : Double) {
+    let rad : Double = langle * @math.pi / 180.0
+    let steps = 4.0
+    for i = 0.0; i < steps + 1; i = i + 1 {
+      let nx = x + @math.round(i * length / steps * @math.cos(rad)).to_int()
+      let ny = y + @math.round(i * length / steps * @math.sin(rad)).to_int()
+      coordinates.push((nx, ny))
+    }
+    x = x + @math.round(length * @math.cos(rad)).to_int()
+    y = y + @math.round(length * @math.sin(rad)).to_int()
+  }
+
+  // @wasm4.trace(l_system)
+  for char in l_string {
+    match char {
+      'F' | 'G' => coord(tl, angle)
+      '+' => angle = angle + langle
+      '-' => angle = angle - langle
+      '[' => st.push((x, y, angle))
+      ']' =>
+        match st.pop() {
+          Some(value) => {
+            x = value.0
+            y = value.1
+            angle = value.2
+          }
+          None => {
+            ()
+            @wasm4.trace("character not found")
+          }
+        }
+      _ => ()
+    }
+  }
+  coordinates
+}
+
+pub fn fractal(
+  offset_x : Int,
+  offset_y : Int,
+  vs : String,
+  ps : @hashmap.T[String, String],
+  tl : Double,
+  angle : Double,
+  levels : UInt,
+  color : UInt
+) -> Unit {
+  let thetas = l_system(vs, ps, offset_x, offset_y, tl, angle, levels)
+  for theta in thetas {
+    let x = theta.0.reinterpret_as_uint()
+    let y = (160 - theta.1).reinterpret_as_uint()
+    @wasm4.set_frame_buffer(y * 160 + x, color)
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/.gitignore" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/.gitignore"
new file mode 100644
index 0000000..b1283a7
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/.gitignore"
@@ -0,0 +1,2 @@
+target/
+.mooncakes/
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/LICENSE" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/LICENSE"
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/LICENSE"
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
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+      direction or management of such entity, whether by contract or
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
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+
+   6. Trademarks. This License does not grant permission to use the trade
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+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+
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+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/README.md" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/README.md"
new file mode 100644
index 0000000..f87c0ad
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/README.md"
@@ -0,0 +1 @@
+# Spaceack/TheLegendOfMoonbit
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/moon.mod.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/moon.mod.json"
new file mode 100644
index 0000000..3cb2b1f
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/moon.mod.json"
@@ -0,0 +1,14 @@
+{
+  "name": "Spaceack/TheLegendOfMoonbit",
+  "version": "0.1.0",
+  "deps": {
+    "moonbitlang/wasm4": "0.2.2",
+    "moonbitlang/x": "0.4.11"
+  },
+  "readme": "README.md",
+  "repository": "",
+  "license": "Apache-2.0",
+  "keywords": [],
+  "description": "",
+  "source": "src"
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/bug.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/bug.mbt"
new file mode 100644
index 0000000..e9d80ab
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/bug.mbt"
@@ -0,0 +1,16 @@
+pub fn bug(self : GameStat) -> Unit {
+  let bugs_bytes2 : Bytes = Bytes::from_array(player)
+  @wasm4.blit(
+    @wasm4.sprite(bugs_bytes2),
+    self.bug_x,
+    self.bug_y,
+    8,
+    9,
+    @wasm4.BlitFlag::{
+      one_bit_per_pixel: false,
+      rotate: false,
+      flip_x: false,
+      flip_y: false,
+    },
+  )
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_game_init.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_game_init.mbt"
new file mode 100644
index 0000000..ce2f05c
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_game_init.mbt"
@@ -0,0 +1,25 @@
+pub fn draw_game_init(self : GameStat) -> Unit {
+  @wasm4.text("Legend of Moonbit", 10, 10)
+  hypotrochoid_line(120, 40, 12, 9, 3, 6, 300, 4)
+  fractal_tree(10, 1, "X", 1.0, 35, 2, 2) //小草
+  fractal_tree(30, 1, "X", 2.0, 32, 5U, 2) //大树
+  fractal_tree(80, 1, "X", 2.0, 36, 4U, 2) // 中等树
+  fractal_tree(88, 1, "X", 2.0, 35, 2, 2) //大草
+  fractal_tree(121, 1, "X", 1.0, 38, 2, 2) //小草
+  fractal_tree(130, 1, "X", 3.0, 28, 3U, 2) // 小树
+  fractal_tree(150, 1, "X", 2.0, 24, 5U, 2)
+  let player_bytes2 : Bytes = Bytes::from_array(x1)
+  @wasm4.blit(
+    @wasm4.sprite(player_bytes2),
+    self.player_x,
+    self.player_y,
+    16,
+    16,
+    @wasm4.BlitFlag::{
+      one_bit_per_pixel: false,
+      rotate: self.player_rotate,
+      flip_x: self.player_flip_x,
+      flip_y: false,
+    },
+  )
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_menu.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_menu.mbt"
new file mode 100644
index 0000000..0bb15f6
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_menu.mbt"
@@ -0,0 +1,9 @@
+pub fn draw_menu(self : GameStat) -> Unit {
+  match self.game_state {
+    GSInitMenu => {
+      @wasm4.text("Start", 60, 60)
+      // @wasm4.text("About", 60, 80)
+      @wasm4.text(">", 50, 60)
+    }
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_msg.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_msg.mbt"
new file mode 100644
index 0000000..20dfe84
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_msg.mbt"
@@ -0,0 +1,64 @@
+pub fn draw_msg(self : GameStat) -> Unit {
+  if self.lv == 3 {
+    if self.player_x == 90 && self.bn < 20 {
+      self.show_args_bar = false
+      @wasm4.text("What's that!?", 10, 5)
+      self.lock_player = true
+      if not(self.lock_player) {
+        self.lock_player = true
+      }
+    }
+    if self.player_x == 91 && self.bn < 20 {
+      self.show_args_bar = false
+      @wasm4.text("Star is coming!", 10, 5)
+      if not(self.lock_player) {
+        self.lock_player = true
+      }
+      self.lock_player = true
+    } else if self.player_x == 92 && self.bn < 20 {
+      self.show_args_bar = false
+      if not(self.lock_player) {
+        self.lock_player = true
+      }
+      let mut px = 10
+      let mut py = 10
+      for n = 0; n < 140; n = n + 1 {
+        px += 1
+        py += 1
+        @wasm4.oval(px, py, 20, 20)
+      }
+      @wasm4.text("Run!", 10, 5)
+      self.memory = 1
+      self.hp = 50
+
+      // self.game_state = GS2 
+    } else if self.player_x == 93 && self.bn < 20 {
+      self.show_args_bar = false
+      self.lock_player = true
+      @wasm4.rect(0, 0, 160, 160)
+    } else if self.player_x == 94 && self.bn < 2 {
+      self.player_rotate = true
+      self.lv = self.lv + 1
+      self.game_state = GS2
+    }
+  } else if self.lv == 4 {
+    self.show_args_bar = false
+    if self.player_x == 94 && self.bn < 20 {
+      @wasm4.text("Ahh, It hurts! Who?", 10, 5)
+      @wasm4.text("Who am I?", 10, 15)
+      self.player_rotate = false
+      self.lock_player = true
+      if not(self.lock_player) {
+        self.lock_player = true
+      }
+    } else if self.player_x == 95 && self.bn < 20 {
+      @wasm4.text("Where am I?", 10, 5)
+      self.lock_player = true
+      if not(self.lock_player) {
+        self.lock_player = true
+      }
+    } else if self.player_x == 96 && self.bn < 20 {
+
+    }
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_rand.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_rand.mbt"
new file mode 100644
index 0000000..23d2441
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_rand.mbt"
@@ -0,0 +1,61 @@
+pub fn draw_background(self : GameStat) -> Unit {
+  if self.night {
+    hypotrochoid_line(120, 40, 12, 9, 3, 6, 300, 4)
+    @wasm4.set_palette(4, @wasm4.rgb(0xf9a875)) // 沙粽
+    @wasm4.set_palette(1, @wasm4.rgb(0xaa337f)) // 陈玫红 Maximum Red Purple
+    @wasm4.set_palette(2, @wasm4.rgb(0xC75B7A)) // 暗岩灰
+    @wasm4.set_palette(3, @wasm4.rgb(0xD9ABAB)) // 绿
+  } else {
+    hypotrochoid_line(120, 40, 12, 13, 9, 19, 300, 4)
+    @wasm4.set_palette(4, @wasm4.rgb(0xf9a875)) // 沙粽
+    @wasm4.set_palette(2, @wasm4.rgb(0xaa337f)) // 陈玫红 Maximum Red Purple
+    @wasm4.set_palette(1, @wasm4.rgb(0xC75B7A)) // 暗岩灰
+    @wasm4.set_palette(3, @wasm4.rgb(0xD9ABAB)) // 绿
+  }
+  if self.lv == 1 {
+    fractal_tree(10, 1, "X", 1.0, 35, 2, 2) //小草
+    fractal_tree(30, 1, "X", 2.0, 32, 5U, 2) //大树
+    fractal_tree(80, 1, "X", 2.0, 36, 4U, 2) // 中等树
+    fractal_tree(88, 1, "X", 2.0, 35, 2, 2) //大草
+    fractal_tree(121, 1, "X", 1.0, 38, 2, 2) //小草
+    fractal_tree(130, 1, "X", 3.0, 28, 3U, 2) // 小树
+    fractal_tree(150, 1, "X", 2.0, 24, 5U, 2)
+  } else {
+    if not(self.lock) {
+      self.tx1 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx2 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx3 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx4 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx5 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx6 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx7 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.tx8 = (self.rng.uint(limit=120) + 10).reinterpret_as_int()
+      self.txa1 = (self.rng.uint(limit=28) + 10).reinterpret_as_int()
+      self.txa2 = (self.rng.uint(limit=28) + 10).reinterpret_as_int()
+      self.txa3 = (self.rng.uint(limit=28) + 10).reinterpret_as_int()
+      self.lock = true
+    }
+    fractal_tree(self.tx1, 1, "X", 2.0, self.txa1.to_double(), 5U, 2)
+    fractal_tree(self.tx2, 1, "X", 2.0, self.txa2.to_double(), 5U, 2)
+    fractal_tree(self.tx3, 1, "X", 2.0, self.txa3.to_double(), 4, 2)
+    fractal_tree(self.tx4, 1, "X", 2.0, self.txa1.to_double(), 4, 2)
+    fractal_tree(self.tx6, 1, "X", 3.0, self.txa2.to_double(), 3, 2)
+    fractal_tree(self.tx7, 1, "X", 1.0, self.txa3.to_double(), 2, 2)
+    fractal_tree(self.tx8, 1, "X", 1.0, self.txa1.to_double(), 2, 2)
+    fractal_tree(self.tx5, 1, "X", 2.0, self.txa2.to_double(), 2, 2)
+  }
+  let player_bytes2 : Bytes = Bytes::from_array(x1)
+  @wasm4.blit(
+    @wasm4.sprite(player_bytes2),
+    self.player_x,
+    self.player_y,
+    16,
+    16,
+    @wasm4.BlitFlag::{
+      one_bit_per_pixel: false,
+      rotate: self.player_rotate,
+      flip_x: self.player_flip_x,
+      flip_y: false,
+    },
+  )
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_show_status.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_show_status.mbt"
new file mode 100644
index 0000000..8d05eb3
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/draw_show_status.mbt"
@@ -0,0 +1,10 @@
+pub fn show_status(self : GameStat) -> Unit {
+  if self.show_args_bar {
+    @wasm4.text("DAY ", 1, 5)
+    @wasm4.text(self.lv.to_string(), 25, 5)
+    @wasm4.text("HP ", 45, 5)
+    @wasm4.text(self.hp.to_string(), 65, 5)
+    @wasm4.text("Mem", 90, 5)
+    @wasm4.text(self.memory.to_string(), 120, 5)
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/graphics_arts.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/graphics_arts.mbt"
new file mode 100644
index 0000000..2a3afe3
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/graphics_arts.mbt"
@@ -0,0 +1,104 @@
+fn min(arr : Array[UInt]) -> UInt {
+  let mut min_value = arr[0]
+  for value in arr {
+    if value < min_value {
+      min_value = value
+    }
+  }
+  min_value
+}
+
+fn max(arr : Array[UInt]) -> UInt {
+  let mut max_value = arr[0]
+  for value in arr {
+    if value > max_value {
+      max_value = value
+    }
+  }
+  max_value
+}
+
+fn x_coordinate(d : Double, lr : Double, br : Double, theta : Double) -> Double {
+  (br - lr) * @math.cos(theta) + d * @math.cos((br - lr) / lr * theta)
+}
+
+fn y_coordinate(d : Double, lr : Double, br : Double, theta : Double) -> Double {
+  (br - lr) * @math.sin(theta) + d * @math.sin((br - lr) / lr * theta)
+}
+
+fn linspace(start : Double, stop : Double, num : Double) -> Array[Double] {
+  let step : Double = (stop - start) / (num - 1)
+  let value = []
+  for x = 0.0; x < num; x = x + 1 {
+    value.push(start + step * x)
+  } else {
+    return value
+  }
+}
+
+pub fn hypotrochoid_line(
+  offset_x : Int,
+  offset_y : Int,
+  d : Double,
+  lr : Double,
+  br : Double,
+  revs : Double,
+  niter : Double,
+  color : UInt
+) -> Unit {
+  let local_xy : Array[(UInt, UInt)] = Array::new()
+  let revs = revs
+  let d = d
+  let lr = lr
+  let br = br
+  let niter = niter
+  let thetas = linspace(0.0, revs * 2.0 * @math.pi, niter)
+  for theta in thetas {
+    let x = (@math.round(x_coordinate(d, lr, br, theta)).to_int() + offset_x).reinterpret_as_uint()
+    let y = (@math.round(y_coordinate(d, lr, br, theta)).to_int() + offset_y).reinterpret_as_uint()
+    @wasm4.set_frame_buffer(y * 160 + x, color)
+  }
+}
+
+fn array_to_bytes(
+  arr : Array[Array[UInt]],
+  width : UInt,
+  height : UInt
+) -> Bytes {
+  let result = Bytes::new(height.reinterpret_as_int())
+  for i = 0; i < height.reinterpret_as_int(); i = i + 1 {
+    let mut byte : UInt = 0
+    for j = 0; j < width.reinterpret_as_int(); j = j + 1 {
+      if arr[i][j] != 0 {
+        byte = byte | (1 << j).reinterpret_as_uint()
+      }
+    }
+    result[i] = byte.to_byte()
+  }
+  result
+}
+
+pub fn calulate_bounding_rect_min(local_xy : Array[(UInt, UInt)]) -> Bytes {
+  let xs = local_xy.map(fn(p) { p.0 })
+  let ys = local_xy.map(fn(p) { p.1 })
+  let min_x = min(xs)
+  let max_x = max(xs)
+  let min_y = min(ys)
+  let max_y = max(ys)
+  let width = max_x - min_x + 1
+  let height = max_y - min_y + 1
+  let my_rect : Array[Array[UInt]] = Array::new()
+  let row : Array[UInt] = Array::new()
+  for x = width; x > 0; x = x - 1 {
+    row.push(0)
+  }
+  for y = height; y > 0; y = y - 1 {
+    my_rect.push(row)
+  }
+  for intr in local_xy {
+    let yy = (intr.1 - min_y).reinterpret_as_int()
+    let xx = (intr.0 - min_x).reinterpret_as_int()
+    my_rect[yy][xx] = 1
+  }
+  array_to_bytes(my_rect, width, height)
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/l_system.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/l_system.mbt"
new file mode 100644
index 0000000..15ddfae
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/l_system.mbt"
@@ -0,0 +1,92 @@
+pub fn generate_string(
+  vs : String,
+  ps : @hashmap.T[String, String],
+  levels : UInt
+) -> String {
+  let mut this_vs : String = vs
+  for i = 0U; i < levels; i = i + 1 {
+    let mut next_rule = ""
+    for v in this_vs {
+      let cv : String = v.to_string()
+      match ps.get(cv) {
+        Some(value) => next_rule = next_rule + value
+        None => next_rule = next_rule + cv
+      }
+    }
+    this_vs = next_rule
+  }
+  this_vs
+}
+
+fn l_system(
+  vs : String,
+  ps : @hashmap.T[String, String],
+  x : Int,
+  y : Int,
+  tl : Double,
+  langle : Double,
+  levels : UInt
+) -> Array[(Int, Int)] {
+  let l_string = generate_string(vs, ps, levels)
+  let mut x = x
+  let mut y = y
+  let coordinates = []
+  let mut angle = 90.0
+  // let  langle = langle
+  let st : @stack.Stack[(Int, Int, Double)] = @stack.Stack::new()
+  fn coord(length : Double, langle : Double) {
+    let rad : Double = langle * @math.pi / 180.0
+    let steps = 2.0
+    for i = 0.0; i < steps + 1; i = i + 1 {
+      let nx = x + @math.round(i * length / steps * @math.cos(rad)).to_int()
+      let ny = y + @math.round(i * length / steps * @math.sin(rad)).to_int()
+      coordinates.push((nx, ny))
+    }
+    x = x + @math.round(length * @math.cos(rad)).to_int()
+    y = y + @math.round(length * @math.sin(rad)).to_int()
+  }
+
+  // @wasm4.trace(l_system)
+  for char in l_string {
+    match char {
+      'F' | 'G' => coord(tl, angle)
+      '+' => angle = angle + langle
+      '-' => angle = angle - langle
+      '[' => st.push((x, y, angle))
+      ']' =>
+        match st.pop() {
+          Some(value) => {
+            x = value.0
+            y = value.1
+            angle = value.2
+          }
+          None => {
+            ()
+            @wasm4.trace("character not found")
+          }
+        }
+      _ => ()
+    }
+  }
+  coordinates
+}
+
+pub fn fractal_tree(
+  offset_x : Int,
+  offset_y : Int,
+  vs : String,
+  tl : Double,
+  angle : Double,
+  levels : UInt,
+  color : UInt
+) -> Unit {
+  let ps : @hashmap.T[String, String] = @hashmap.of(
+    [("X", "F[-X][+X]FX"), ("F", "FF")],
+  )
+  let thetas = l_system(vs, ps, offset_x, offset_y, tl, angle, levels)
+  for theta in thetas {
+    let x = theta.0.reinterpret_as_uint()
+    let y = (160 - theta.1).reinterpret_as_uint()
+    @wasm4.set_frame_buffer(y * 160 + x, color)
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/hello.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/hello.mbt"
new file mode 100644
index 0000000..9012592
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/hello.mbt"
@@ -0,0 +1,3 @@
+pub fn hello() -> String {
+  "Hello, world!"
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/hello_test.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/hello_test.mbt"
new file mode 100644
index 0000000..e0e3a7d
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/hello_test.mbt"
@@ -0,0 +1,5 @@
+test "hello" {
+  if @lib.hello() != "Hello, world!" {
+    fail!("@lib.hello() != \"Hello, world!\"")
+  }
+}
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/moon.pkg.json"
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/lib/moon.pkg.json"
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/moon.pkg.json" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/moon.pkg.json"
new file mode 100644
index 0000000..50ef7c4
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/moon.pkg.json"
@@ -0,0 +1,21 @@
+{
+  // "is-main": true,
+  "import": ["moonbitlang/wasm4","moonbitlang/x/stack"],
+  "link": {
+    "wasm-gc": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      }
+    },
+    "wasm": {
+      "exports": ["start", "update"],
+      "import-memory": {
+        "module": "env",
+        "name": "memory"
+      },
+      "heap-start-address": 6590
+    }
+  }
+}
\ No newline at end of file
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/static_data.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/static_data.mbt"
new file mode 100644
index 0000000..f147072
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/static_data.mbt"
@@ -0,0 +1,12 @@
+let x1 : Array[Byte] = [
+  0xaa, 0x9e, 0xac, 0xaa, 0xaa, 0x57, 0xbf, 0x2a, 0xaa, 0x57, 0xbf, 0x2a, 0xaa, 0x17,
+  0xbf, 0x2a, 0xaa, 0x17, 0x03, 0x2a, 0xaa, 0x57, 0x54, 0x2a, 0xa8, 0x55, 0x55, 0x6a,
+  0xa9, 0x55, 0x05, 0x0a, 0xaf, 0xd5, 0x55, 0x4a, 0xa8, 0x75, 0x55, 0x4a, 0xaa, 0xd5,
+  0x57, 0x2a, 0xaa, 0x1d, 0x7c, 0xaa, 0xa8, 0x75, 0x15, 0x2a, 0xa8, 0x45, 0x15, 0x2a,
+  0xaa, 0x10, 0x54, 0xaa, 0xaa, 0x85, 0x52, 0xaa,
+]
+
+let player : Array[Byte] = [
+  0b11000011, 0b11000011, 0b10000001, 0b00100100, 0b00100100, 0b00000000, 0b00100100,
+  0b10011001, 0b11000011,
+]
diff --git "a/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/top.mbt" "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/top.mbt"
new file mode 100644
index 0000000..0b21590
--- /dev/null
+++ "b/teams/CS\350\265\217\351\207\221\347\214\216\346\211\213-\344\275\234\345\223\2015/the_legend_of_moonbit/src/top.mbt"
@@ -0,0 +1,234 @@
+enum GameState {
+  GSInit // 初始状态
+  GSInitMenu //初始菜单
+  GSGameStart
+  GS2
+}
+
+struct GameStat {
+  mut game_state : GameState
+  mut player_x : Int
+  mut player_y : Int
+  mut player_flip_x : Bool
+  mut player_rotate : Bool
+  mut night : Bool
+  mut memory : UInt
+  mut hp : UInt
+  mut lv : UInt
+  mut bn : UInt
+  mut lock : Bool
+  mut lock_player : Bool
+  mut tx1 : Int
+  mut tx2 : Int
+  mut tx3 : Int
+  mut tx4 : Int
+  mut tx5 : Int
+  mut tx6 : Int
+  mut tx7 : Int
+  mut tx8 : Int
+  mut txa1 : Int
+  mut txa2 : Int
+  mut txa3 : Int
+  mut bug_x : Int
+  mut bug_y : Int
+  mut show_args_bar : Bool
+  rng : @random.Rand
+}
+
+let gs : GameStat = GameStat::new()
+
+pub fn GameStat::new() -> GameStat {
+  {
+    game_state: GSInit,
+    night: true,
+    player_x: 45,
+    player_y: 144,
+    player_flip_x: false,
+    player_rotate: false,
+    memory: 100,
+    hp: 100,
+    lv: 1,
+    bn: 0,
+    lock: false,
+    lock_player: false,
+    tx1: 1,
+    tx2: 1,
+    tx3: 1,
+    tx4: 1,
+    tx5: 1,
+    tx6: 1,
+    tx7: 1,
+    tx8: 1,
+    txa1: 32,
+    txa2: 32,
+    txa3: 32,
+    bug_x: 140,
+    bug_y: 150,
+    show_args_bar: true,
+    rng: @random.new(),
+  }
+}
+
+pub struct PrevGamePad {
+  mut button_1 : Bool
+  mut button_2 : Bool
+  mut button_left : Bool
+  mut button_right : Bool
+  mut button_up : Bool
+  mut button_down : Bool
+} derive(Eq, Default)
+
+pub fn butRel(cur_button : Bool, prev_button : Bool) -> Bool {
+  return cur_button && not(prev_button)
+}
+
+pub fn game_init(self : GameStat) -> Unit {
+  draw_game_init(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_1, prevgp1.button_1) ||
+    butRel(gp1.button_2, prevgp1.button_2) ||
+    butRel(gp1.button_down, prevgp1.button_down) ||
+    butRel(gp1.button_left, prevgp1.button_left) ||
+    butRel(gp1.button_right, prevgp1.button_right) ||
+    butRel(gp1.button_up, prevgp1.button_up) {
+    self.game_state = GSInitMenu
+  }
+}
+
+pub fn game_init_menu(self : GameStat) -> Unit {
+  draw_game_init(self)
+  draw_menu(self)
+  let gp1 = @wasm4.get_gamepad()
+  if butRel(gp1.button_1, prevgp1.button_1) ||
+    butRel(gp1.button_2, prevgp1.button_2) ||
+    butRel(gp1.button_down, prevgp1.button_down) ||
+    butRel(gp1.button_left, prevgp1.button_left) ||
+    butRel(gp1.button_right, prevgp1.button_right) ||
+    butRel(gp1.button_up, prevgp1.button_up) {
+    self.game_state = GSGameStart
+  }
+}
+
+pub fn game_start(self : GameStat) -> Unit {
+  show_status(self)
+  draw_background(self)
+  let gp1 = @wasm4.get_gamepad()
+  if self.player_x > 1 &&
+    gp1.button_left &&
+    not(self.lock_player) &&
+    self.lv > 7 {
+    self.player_x = self.player_x - 1
+    self.player_flip_x = true
+  } else if gp1.button_right && not(self.lock_player) {
+    self.player_x = self.player_x + 1
+    self.player_flip_x = false
+    self.bn = 0
+  } else if butRel(gp1.button_up, prevgp1.button_up) && self.player_y > 100 {
+    for n = 0; n < 30; n = n + 1 {
+      self.player_y = self.player_y - 1
+    }
+  }
+  if gp1.button_2 {
+    self.bn = self.bn + 1
+    self.lock_player = false
+  }
+  if self.player_y < 144 {
+    self.player_y = self.player_y + 1
+  }
+  if self.player_x > 144 {
+    self.lv = self.lv + 1
+    self.lock = false
+    self.player_x = 1
+    self.night = not(self.night)
+  }
+  draw_msg(self)
+}
+
+pub fn gs2(self : GameStat) -> Unit {
+  if self.lv > 5 {
+    bug(self)
+  }
+  show_status(self)
+  draw_msg(self)
+  draw_background(self)
+  let gp1 = @wasm4.get_gamepad()
+  if self.player_x > 1 &&
+    gp1.button_left &&
+    not(self.lock_player) &&
+    self.lv > 1 {
+    self.player_x = self.player_x - 1
+    self.player_flip_x = true
+  } else if gp1.button_right && not(self.lock_player) {
+    self.player_x = self.player_x + 1
+    if self.lv > 5 {
+      self.show_args_bar = true
+      self.bug_x = self.bug_x - 1
+    }
+    if self.bug_x - self.player_x < 10 {
+      if self.memory < 1000 {
+        self.memory = self.memory + 1
+      }
+      self.bug_y = 160
+      self.bug_x = 0
+    }
+    self.player_flip_x = false
+    self.bn = 0
+  } else if butRel(gp1.button_up, prevgp1.button_up) && self.player_y > 100 {
+    for n = 0; n < 30; n = n + 1 {
+      self.player_y = self.player_y - 1
+    }
+  } else if gp1.button_2 {
+    self.bn = self.bn + 1
+    self.lock_player = false
+  } else if butRel(gp1.button_1, prevgp1.button_1) {
+    self.show_args_bar = not(self.show_args_bar)
+  }
+  if self.player_y < 144 {
+    self.player_y = self.player_y + 1
+  }
+  if self.player_x > 144 {
+    self.lv = self.lv + 1
+    self.lock = false
+    self.player_x = 1
+    self.bug_x = 140
+    self.bug_y = 150
+    self.night = not(self.night)
+  }
+}
+
+pub fn game_end(self : GameStat) -> Unit {
+
+}
+
+let prevgp1 : PrevGamePad = {
+  button_1: false,
+  button_2: false,
+  button_down: false,
+  button_left: false,
+  button_right: false,
+  button_up: false,
+}
+
+pub fn update() -> Unit {
+  match gs.game_state {
+    GSInit => gs.game_init()
+    GSInitMenu => gs.game_init_menu()
+    GSGameStart => gs.game_start()
+    GS2 => gs.gs2()
+  }
+  let gp1 = @wasm4.get_gamepad()
+  prevgp1.button_1 = gp1.button_1
+  prevgp1.button_2 = gp1.button_2
+  prevgp1.button_down = gp1.button_down
+  prevgp1.button_left = gp1.button_left
+  prevgp1.button_right = gp1.button_right
+  prevgp1.button_up = gp1.button_up
+}
+
+pub fn start() -> Unit {
+  @wasm4.trace("Hello world!")
+  @wasm4.set_palette(4, @wasm4.rgb(0xf9a875)) // 沙粽
+  @wasm4.set_palette(1, @wasm4.rgb(0xaa337f)) // 陈玫红 Maximum Red Purple
+  @wasm4.set_palette(2, @wasm4.rgb(0xC75B7A)) // 暗岩灰
+  @wasm4.set_palette(3, @wasm4.rgb(0xD9ABAB)) // 绿
+}