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增加示例项目&&修改08_breakout #5

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3 changes: 2 additions & 1 deletion README.md
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Expand Up @@ -101,7 +101,7 @@ Dev C++ 用户：新建项目 > 添加 `main.cpp` > 编译运行，完事。

## 示例程序

`examples/` 目录包含 15 个由浅入深的示例，每个兼容 Win32 和 SDL 两条产品线：
`examples/` 目录包含 16 个由浅入深的示例，每个兼容 Win32 和 SDL 两条产品线：

### 入门基础

Expand Down Expand Up @@ -142,6 +142,7 @@ Dev C++ 用户：新建项目 > 添加 `main.cpp` > 编译运行，完事。
| `13_clip_rect.cpp` | 裁剪矩形 | SetClip/ClearClip |
| `14_space_shooter.cpp` | 太空射击 | 综合实战 |
| `15_ui_controls.cpp` | UI 控件演示 | Button、Checkbox、RadioBox |
| `16_coreball.cpp` | 见缝插针 | 圆周运动、角度碰撞、状态机 |

编译任意示例：

Expand Down
4 changes: 2 additions & 2 deletions SDL2PORT.md
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Expand Up @@ -186,5 +186,5 @@ Windows 下如果使用动态库版本，需要让运行时能找到这些 DLL

### 5.6 迁移现状

- 当前 SDL 回归入口是 `examples/01_hello.cpp` ~ `examples/15_ui_controls.cpp`，这 15 个统一示例通过预处理器自动选择 Win32 或 SDL 后端，同时作为两条产品线的回归验证。
- 覆盖路径包括：基础窗口、图元、精灵、动画、字体、音频、Tilemap、裁剪矩形、缩放、旋转与 UI 控件。
- 当前 SDL 回归入口是 `examples/01_hello.cpp` ~ `examples/16_coreball.cpp`，这 16 个统一示例通过预处理器自动选择 Win32 或 SDL 后端，同时作为两条产品线的回归验证。
- 覆盖路径包括：基础窗口、图元、精灵、动画、字体、音频、Tilemap、裁剪矩形、缩放、旋转、UI 控件与角度碰撞小游戏。
2 changes: 1 addition & 1 deletion docs/GameLib.SDL.md
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Expand Up @@ -1156,7 +1156,7 @@ static bool _srandDone;
- `docs/GameLib.SDL.md` 已同步到当前实现状态，仓库根目录也已新增 `SDL2PORT.md` 作为简版移植说明。
- `AGENTS.md` 已补充 `GameLib.SDL.h` / `docs/GameLib.SDL.md` 的索引与用途。
- README 仍只保留一句 SDL 产品线提示，主叙事继续突出 Win32 零依赖主线；具体 SDL 编译命令与限制统一放到 `SDL2PORT.md`。
- `examples/01_hello.cpp` ~ `examples/15_ui_controls.cpp` 已统一为 Win32 / SDL 双后端示例，通过预处理器自动选择后端，覆盖基础窗口、图元、精灵、动画、字体、音频、Tilemap、裁剪矩形、缩放、旋转与 UI 控件等路径，同时作为 SDL 版的回归入口。
- `examples/01_hello.cpp` ~ `examples/16_coreball.cpp` 已统一为 Win32 / SDL 双后端示例，通过预处理器自动选择后端，覆盖基础窗口、图元、精灵、动画、字体、音频、Tilemap、裁剪矩形、缩放、旋转、UI 控件与角度碰撞小游戏等路径，同时作为 SDL 版的回归入口。
- 本阶段收口结论：`GameLib.SDL.h` 已具备独立产品线的最小可维护状态，后续工作可以从“补齐代表性回归入口”切换到“按具体差异或新需求增量演进”。

### 14.5 当前已知差异与可继续完善项
Expand Down
48 changes: 35 additions & 13 deletions examples/08_breakout.cpp
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Expand Up @@ -23,6 +23,19 @@
#define BRICK_OFFSET_X 12
#define BRICK_OFFSET_Y 50

static const int PADDLE_W = 80;
static const int PADDLE_H = 12;
static const int PADDLE_START_X = 280;
static const int PADDLE_Y = 450;
static const int PADDLE_SPEED = 6;

static const float BALL_START_VY = -4.0f;
static const float BALL_START_MIN_ABS_VX = 1.5f;
static const float BALL_START_MAX_ABS_VX = 4.0f;
static const int BALL_R = 5;
static const float BALL_PADDLE_MAX_VX = 8.0f;
static const int LIVES_START = 1;

static const char *ChooseExistingPath(const char *pathA, const char *pathB)
{
FILE *file = fopen(pathA, "rb");
Expand All @@ -32,8 +45,17 @@ static const char *ChooseExistingPath(const char *pathA, const char *pathB)
return pathA;
}

int main()
{
static void ResetBallVelocity(float *vx, float *vy)
{
int minSpeedX10 = (int)(BALL_START_MIN_ABS_VX * 10.0f);
int maxSpeedX10 = (int)(BALL_START_MAX_ABS_VX * 10.0f);
float speed = (float)GameLib::Random(minSpeedX10, maxSpeedX10) / 10.0f;
if (GameLib::Random(0, 1) == 0) speed = -speed;
*vx = speed;
*vy = BALL_START_VY;
}
int main()
{
GameLib game;
game.Open(640, 480, "08 - Breakout", true);

Expand All @@ -55,14 +77,14 @@ int main()
bool bricks[BRICK_ROWS][BRICK_COLS];
uint32_t brickColors[] = {COLOR_RED, COLOR_ORANGE, COLOR_YELLOW, COLOR_GREEN, COLOR_CYAN, COLOR_PURPLE};

int padW = 80, padH = 12;
int padX = 280, padY = 450;
int padW = PADDLE_W, padH = PADDLE_H;
int padX = PADDLE_START_X, padY = PADDLE_Y;

float ballX = 320, ballY = 430;
float ballVX = 3.0f, ballVY = -4.0f;
int ballR = 5;
float ballVX = 0.0f, ballVY = BALL_START_VY;
int ballR = BALL_R;

int score = 0, lives = 3, totalBricks = 0;
int score = 0, lives = LIVES_START, totalBricks = 0;
bool started = false, gameOver = false, gameWin = false;

for (int r = 0; r < BRICK_ROWS; r++)
Expand All @@ -75,8 +97,8 @@ int main()
if (game.IsKeyPressed(KEY_ESCAPE)) break;

if (!gameOver && !gameWin) {
if (game.IsKeyDown(KEY_LEFT)) padX -= 6;
if (game.IsKeyDown(KEY_RIGHT)) padX += 6;
if (game.IsKeyDown(KEY_LEFT)) padX -= PADDLE_SPEED;
if (game.IsKeyDown(KEY_RIGHT)) padX += PADDLE_SPEED;
if (padX < 0) padX = 0;
if (padX + padW > game.GetWidth()) padX = game.GetWidth() - padW;

Expand All @@ -85,7 +107,7 @@ int main()
ballY = (float)(padY - ballR - 1);
if (game.IsKeyPressed(KEY_SPACE)) {
started = true;
ballVX = 3.0f; ballVY = -4.0f;
ResetBallVelocity(&ballVX, &ballVY);
sfxToPlay = launchSfx;
}
} else {
Expand All @@ -107,7 +129,7 @@ int main()
if (ballY + ballR > game.GetHeight()) {
lives--;
if (lives <= 0) { gameOver = true; sfxToPlay = gameOverSfx; }
else { started = false; ballVX = 3.0f; ballVY = -4.0f; sfxToPlay = loseLifeSfx; }
else { started = false; ballVX = 0.0f; ballVY = BALL_START_VY; sfxToPlay = loseLifeSfx; }
}

if (ballVY > 0 &&
Expand All @@ -116,7 +138,7 @@ int main()
ballVY = -ballVY;
ballY = (float)(padY - ballR);
float hitPos = (ballX - padX) / padW;
ballVX = (hitPos - 0.5f) * 8.0f;
ballVX = (hitPos - 0.5f) * BALL_PADDLE_MAX_VX;
if (!sfxToPlay) sfxToPlay = bounceSfx;
}

Expand Down Expand Up @@ -156,7 +178,7 @@ int main()
for (int c = 0; c < BRICK_COLS; c++)
bricks[r][c] = true;
totalBricks = BRICK_ROWS * BRICK_COLS;
score = 0; lives = 3; padX = 280;
score = 0; lives = LIVES_START; padX = PADDLE_START_X;
started = false; gameOver = false; gameWin = false;
sfxToPlay = restartSfx;
}
Expand Down
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