创建一款基于物理机制的街机游戏，类似于经典游戏如《Bricks Breaker》、《Ballz》或《Bounzy!》，其核心玩法围绕发射在墙壁上弹跳并击中带数字的砖块，降低其耐久度直至破碎。游戏在任何砖块到达屏幕底部时结束。

### 核心机制
- 玩家选择方向射击弹球。
- 弹球会在墙壁和砖块上弹跳，直到离开屏幕。
- 砖块上显示需要击打的次数才能破坏它们。
- 每次射击后，砖块整体下移一行。
- 当任一砖块到达屏幕底部时，游戏结束。

### 射击系统
- 玩家通过点击并拖动来瞄准。
- 瞄准时会显示弹道预览。
- 松开后，所有可用的弹球将依次向选定方向发射。
- 弹球在完成路径后返回射击位置。
- 炮台位置更新为第一个着陆的球的位置。
- 弹球发射间隔与其直径匹配。
- 弹球半径动态调整：
  - 当弹球数≤20时为2px。
  - 当弹球数>20时为1px。
- 弹球颜色多样，增加视觉趣味。

### 砖块行为
- 尺寸：每个砖块为14x14px。
- 耐久度：第一关砖块耐久度为1-5 HP，每过一关翻倍，最高200 HP。
- 排布：砖块紧密排列，无缝隙，防止弹球穿过。
- 特殊砖块：未来版本可能包括爆炸砖和护盾砖。

### 游戏进程与难度
- 第一关玩家初始只有1个弹球。
- 从第二关开始，每关初始弹球数为5个。
- 玩家每得1分增加1个弹球，最多可达200个。
- 随着砖块耐久度增加，游戏难度逐步上升。

### 用户界面与控制
- 射击控制：点击并拖动瞄准，松开射击。
- 召回按钮：位于屏幕底部中央，允许立刻召回所有弹球以便重新射击。
- 分数显示：位于屏幕左下角，显示当前分数。
- 游戏结束条件：任一砖块到达屏幕底部时游戏结束。

视觉主题偏好：黑色背景搭配亮色弹球，形成鲜明对比。不需要声音或音乐。弹球和砖块的配色可自由发挥。

Develop a physics-based arcade game similar to *Bricks Breaker, Ballz,* or *Bounzy!* The core mechanics revolve around launching balls that bounce off walls and hit numbered blocks, reducing their durability until they break. The game continues until a block reaches the bottom of the screen.

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### **Core Mechanics**  
- The player aims and shoots balls in a chosen direction.  
- Balls bounce off walls and blocks, continuing their trajectory until they exit the screen.  
- Blocks display a number indicating the required hits to break them.  
- After each shot, blocks move down by one row.  
- The game ends when any block reaches the bottom.  

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### **Shooting System**  
- The player taps and drags to aim.  
- A trajectory preview is displayed while aiming.  
- Upon release, all available balls launch sequentially in the selected direction.  
- Balls return to the shooting position after completing their path.  
- The cannon's position updates to the first ball that lands.  
- Balls launch at an interval matching their diameter.  
- Ball radius adjusts dynamically:  
  - **2px** if there are **≤20 balls**.  
  - **1px** if there are **>20 balls**.  
- Balls come in different colors for visual variety.  

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### **Block Behavior**  
- **Size:** Each block is **14x14px**.  
- **Durability:** Blocks on Level 1 start with **1-5 HP**, doubling in each subsequent level, capped at **200 HP**.  
- **Placement:** Blocks are tightly packed with no gaps, preventing balls from slipping through.  
- **Special Blocks:** Future versions may include:  
  - Explosive blocks that destroy surrounding blocks.  
  - Shielded blocks requiring multiple hits before taking damage.  

---

### **Game Progression & Difficulty**  
- The player starts with **1 ball** at Level 1.  
- From Level 2 onward, the ball count resets to **5** at the beginning of each level.  
- Players earn **+1 ball per point**, up to a maximum of **200 balls**.  
- Block durability increases over time, introducing a scaling difficulty curve.  

---

### **User Interface & Controls**  
- **Shooting Controls:**  
  - Tap and drag to aim, release to shoot.  
- **Recall Button:**  
  - Positioned at the **bottom center**, displayed as an **emoji and a button**.  
  - Allows instant recall of all balls for immediate re-shooting.  
- **Score Display:**  
  - Located at the **bottom left**, showing the current score.  
- **Game Over Condition:**  
  - If any block reaches the bottom row, the game ends.  

This version includes only essential mechanics without power-ups, leaderboards, monetization, or social features.

Q: Can you clarify the visual theme or style you envision for the game?
A: black background, bright balls an contrast theme

Q: Would you like any sound effects or music to accompany the gameplay?
A: no

Q: Are there any specific color schemes you prefer for balls and blocks?
A: you decide