PSP游戏机开发指南：自制游戏代码解析

#include #include #include #include

// 定义PSP模块信息 PSP_MODULE_INFO("My PSP Game", 0, 1, 1); PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER | THREAD_ATTR_VFPU);

// 退出回调函数 int exit_callback(int arg1, int arg2, void *common) { sceKernelExitGame(); return 0; }

int CallbackThread(SceSize args, void *argp) { int cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL); sceKernelRegisterExitCallback(cbid); sceKernelSleepThreadCB(); return 0; }

int main() { // 初始化PSP系统 SetupCallbacks(); pspDebugScreenInit();

// 初始化控制器 SceCtrlData pad; sceCtrlSetSamplingCycle(0); sceCtrlSetSamplingMode(PSP_CTRL_MODE_ANALOG);

// 设置调试屏幕 pspDebugScreenSetXY(0, 0); pspDebugScreenPrintf("欢迎来到我的PSP游戏！

");

// 游戏主循环 while(1) { // 读取控制器输入 sceCtrlReadBufferPositive(&pad, 1);

// 清屏 pspDebugScreenClear();

// 显示控制器状态 pspDebugScreenSetXY(0, 2); pspDebugScreenPrintf("方向键: %s%s%s%s", (pad.Buttons & PSP_CTRL_UP) ? "上" : "", (pad.Buttons & PSP_CTRL_DOWN) ? "下" : "", (pad.Buttons & PSP_CTRL_LEFT) ? "左" : "", (pad.Buttons & PSP_CTRL_RIGHT) ? "右" : "");

// 显示功能键状态 pspDebugScreenSetXY(0, 4); pspDebugScreenPrintf("功能键: %s%s%s%s", (pad.Buttons & PSP_CTRL_CROSS) ? "X" : "", (pad.Buttons & PSP_CTRL_CIRCLE) ? "O" : "", (pad.Buttons & PSP_CTRL_SQUARE) ? "□" : "", (pad.Buttons & PSP_CTRL_TRIANGLE) ? "△" : "");

// 显示摇杆位置 pspDebugScreenSetXY(0, 6); pspDebugScreenPrintf("左摇杆: X=%d, Y=%d", pad.Lx, pad.Ly);

// 退出检测 if (pad.Buttons & PSP_CTRL_START) { break; }

// 延迟以控制帧率 sceDisplayWaitVblankStart(); }

#include #include

// 顶点结构定义 struct Vertex { unsigned int color; float x, y, z; };

// 初始化图形系统 void initGu() { // 设置显示列表 static unsigned int __attribute__((aligned(16))) list[262144];

// 初始化GU sceGuInit(); sceGuStart(GU_DIRECT, list); sceGuDrawBuffer(GU_PSM_8888, (void*)0, 512); sceGuDispBuffer(480, 272, (void*)0x88000, 512); sceGuDepthBuffer((void*)0x110000, 512); sceGuOffset(2048 - (480/2), 2048 - (272/2)); sceGuViewport(2048, 2048, 480, 272); sceGuDepthRange(65535, 0); sceGuScissor(0, 0, 480, 272); sceGuEnable(GU_SCISSOR_TEST); sceGuDepthFunc(GU_GEQUAL); sceGuEnable(GU_DEPTH_TEST); sceGuFrontFace(GU_CW); sceGuShadeModel(GU_SMOOTH); sceGuEnable(GU_CULL_FACE); sceGuEnable(GU_CLIP_PLANES); sceGuEnable(GU_TEXTURE_2D); sceGuEnable(GU_LIGHTING); sceGuEnable(GU_BLEND); sceGuBlendFunc(GU_ADD, GU_SRC_ALPHA, GU_ONE_MINUS_SRC_ALPHA, 0, 0); sceGuFinish(); sceGuSync(0, 0); sceGuDisplay(GU_TRUE); }

// 绘制彩色三角形 void drawTriangle(float x1, float y1, float x2, float y2, float x3, float y3, unsigned int color) { struct Vertex* vertices = (struct Vertex*)sceGuGetMemory(3 * sizeof(struct Vertex));

vertices[0].color = color; vertices[0].x = x1; vertices[0].y = y1; vertices[0].z = 0.0f;

vertices[1].color = color; vertices[1].x = x2; vertices[1].y = y2; vertices[1].z = 0.0f;

vertices[2].color = color; vertices[2].x = x3; vertices[2].y = y3; vertices[2].z = 0.0f;

#include #include

// 初始化音频系统 void initAudio() { pspAudioInit(); }

// 播放简单音效 void playBeep() { int channel = pspAudioChReserve(PSP_AUDIO_NEXT_CHANNEL, 256, PSP_AUDIO_FORMAT_STEREO); if (channel >= 0) { short* audio_data = malloc(256 * 2 * sizeof(short));

// 生成简单的蜂鸣声 for (int i = 0; i < 256; i++) { short sample = (short)(sin(i * 0.1) * 10000); audio_data[i * 2] = sample; // 左声道 audio_data[i * 2 + 1] = sample; // 右声道 }

#include #include #include #include

PSP_MODULE_INFO("Bounce Game", 0, 1, 1);

// 游戏状态结构 typedef struct { float ball_x, ball_y; float ball_dx, ball_dy; float paddle_x; int score; int lives; } GameState;

// 初始化游戏状态 void initGame(GameState* game) { game->ball_x = 240.0f; game->ball_y = 136.0f; game->ball_dx = 2.0f; game->ball_dy = 2.0f; game->paddle_x = 200.0f; game->score = 0; game->lives = 3; }

// 更新游戏逻辑 void updateGame(GameState* game, SceCtrlData* pad) { // 移动球 game->ball_x += game->ball_dx; game->ball_y += game->ball_dy;

// 边界碰撞检测 if (game->ball_x <= 0 || game->ball_x >= 480) game->ball_dx = -game->ball_dx; if (game->ball_y <= 0) game->ball_dy = -game->ball_dy;

// 球拍控制 if (pad->Buttons & PSP_CTRL_LEFT) game->paddle_x -= 3.0f; if (pad->Buttons & PSP_CTRL_RIGHT) game->paddle_x += 3.0f;

// 球拍边界限制 if (game->paddle_x < 0) game->paddle_x = 0; if (game->paddle_x > 400) game->paddle_x = 400;

// 球拍碰撞检测 if (game->ball_y >= 250 && game->ball_y <= 260 && game->ball_x >= game->paddle_x && game->ball_x <= game->paddle_x + 80) { game->ball_dy = -game->ball_dy; game->score += 10; }

// 生命值检测 if (game->ball_y > 272) { game->lives--; game->ball_x = 240.0f; game->ball_y = 136.0f; } }

int main() { // 初始化系统 SetupCallbacks(); initGu();

GameState game; initGame(&game);

SceCtrlData pad; sceCtrlSetSamplingCycle(0); sceCtrlSetSamplingMode(PSP_CTRL_MODE_ANALOG);

while (game.lives > 0) { sceCtrlReadBufferPositive(&pad, 1); updateGame(&game, &pad);

// 开始渲染 sceGuStart(GU_DIRECT, list); sceGuClearColor(0xFF000000); // 黑色背景 sceGuClear(GU_COLOR_BUFFER_BIT);

// 绘制球 drawCircle(game.ball_x, game.ball_y, 10.0f, 0xFFFFFFFF);

// 绘制球拍 drawRectangle(game.paddle_x, 260.0f, 80.0f, 10.0f, 0xFFFF0000);

// 显示分数和生命值 pspDebugScreenSetXY(10, 10); pspDebugScreenPrintf("分数: %d 生命: %d", game.score, game.lives);

sceGuFinish(); sceGuSync(0, 0); sceDisplayWaitVblankStart(); sceGuSwapBuffers(); }

// 游戏结束画面 pspDebugScreenClear(); pspDebugScreenSetXY(200, 120); pspDebugScreenPrintf("游戏结束！

最终分数: %d", game.score);