第一人称射击游戏 C++控制台版（未完成）

#include<iostream>
using namespace std;
 
#include<Windows.h>
 
//定义屏幕宽度、高度
int nScreenWidth = 120;
int nScreenHeight = 40;
 
int main()
{
  // Create Screen Buffer 创建屏幕缓冲区
  wchar_t *screen = new wchar_t[nScreenWidth*nScreenHeight];
  HANDLE hConsole = CreateConsoleScreenBuffer(GENERIC_READ | GENERIC_WRITE, 0, NULL, CONSOLE_TEXTMODE_BUFFER, NULL);
  SetConsoleActiveScreenBuffer(hConsole);
  DWORD dwBytesWritten = 0;
 
  //游戏循环
  while (1)
  {
    // Display Frame    显示
    screen[nScreenWidth * nScreenHeight - 1] = '\0';
    WriteConsoleOutputCharacter(hConsole, screen, nScreenWidth * nScreenHeight, { 0,0 }, &dwBytesWritten);
 
  }
  
}

//地图
int nMapWidth = 16;       // World Dimensions
int nMapHeight = 16;
//玩家位置X、Y、角度
float fPlayerX = 0.0f;      // Player Start Position
float fPlayerY = 0.0f;
float fPlayerA = 0.0f;      // Player Start Rotation
 
 
// 创建地图   Create Map of world space # = wall block, . = space
  wstring map;
  map += L"################";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"#..............#";
  map += L"################";

for (int x = 0; x < nScreenWidth; x++)
    {
      // For each column, calculate the projected ray angle into world space
      float fRayAngle = (fPlayerA - fFOV / 2.0f) + ((float)x / (float)nScreenWidth) * fFOV;//从左半边到右半边
      float fDistanceToWall = 0.0f; //  
      bool bHitWall = false;
 
      float fEyeX = sinf(fRayAngle); //视线方向对应的单位分量 Unit vector for ray in player space
      float fEyeY = cosf(fRayAngle);
 
      //增量方式  判断视线撞墙
      while (!bHitWall && fDistanceToWall<fDepth) 
      {
        fDistanceToWall += 0.1f;
        int nTestX = (int)(fPlayerX + fEyeX * fDistanceToWall);
        int nTestY = (int)(fPlayerY + fEyeY * fDistanceToWall);
 
        // 检查视线达到边界  Test if ray is out of bounds
        if (nTestX < 0 || nTestX >= nMapWidth || nTestY < 0 || nTestY >= nMapHeight)
        {
          bHitWall = true;      // Just set distance to maximum depth
          fDistanceToWall = fDepth;
        }
        else
        {
          //检查视线是否遇到墙体
          if (map[nTestY*nMapWidth + nTestX] == '#')
          {
            bHitWall = true;
          }
        }
      }
      //计算到天花板和地板的距离
      int nCeiling = (float)(nScreenHeight / 2.0) - nScreenHeight/((float)fDistanceToWall);
      int nFloor = nScreenHeight - nCeiling;
 
 
 
      for (int y = 0; y < nScreenHeight; y++)
      {
        // Each Row
        if (y < nCeiling) //天花板
          screen[y*nScreenWidth + x] = ' ';
        else if (y > nCeiling && y <= nFloor)
          screen[y*nScreenWidth + x] = '#';
        else // 地板 Floor
        {
          
          screen[y*nScreenWidth + x] = ' ';
        }
      }
    }

#include<chrono>          //时间相关  
    auto tp1 = chrono::system_clock::now();
  auto tp2 = chrono::system_clock::now();
 
  //游戏循环
  while (1)
  {
    //计算时间
    tp2 = chrono::system_clock::now();
    chrono::duration<float>elapsedTime = tp2 - tp1;
    tp1 = tp2;
    float fElapsedTime = elapsedTime.count(); //一帧的时间
 
    // Handle CCW Rotation
    if (GetAsyncKeyState((unsigned short)'A') & 0x8000)
      fPlayerA -= (0.1f)*fElapsedTime;
 
    if (GetAsyncKeyState((unsigned short)'D') & 0x8000)
      fPlayerA += (0.1f)*fElapsedTime;