/// <summary>
/// Console Renderer constructor
/// </summary>
/// <param name="xdim"> Scene x dimension </param>
/// <param name="ydim"> Scene y dimension </param>
/// <param name="bgPix"> Background pixel </param>
public ConsoleRenderer(int xdim, int ydim, ConsolePixel bgPix)
{
this.xdim = xdim;
this.ydim = ydim;
this.bgPix = bgPix;
_framePrev = new ConsolePixel[xdim, ydim];
_frameNext = new ConsolePixel[xdim, ydim];
for (int y = 0; y < ydim; y++)
{
for (int x = 0; x < xdim; x++)
{
_frameNext[x, y] = bgPix;
}
}
}
/// <summary>
/// Renders the actual frame
/// </summary>
private void RenderFrame()
{
// Background and foreground colors of each pixel
ConsoleColor fgColor, bgColor;
// Auxiliary frame variable for swaping buffers in the end
ConsolePixel[,] frameAux;
// Show frame in screen
Console.SetCursorPosition(0, 0);
fgColor = Console.ForegroundColor;
bgColor = Console.BackgroundColor;
for (int y = 0; y < ydim; y++)
{
for (int x = 0; x < xdim; x++)
{
// Get current current and previous frame for this position
ConsolePixel pix = _frameNext[x, y];
ConsolePixel prevPix = _framePrev[x, y];
// Clear pixel at previous frame
_framePrev[x, y] = bgPix;
// If current pixel is not renderable, use background pixel
if (!pix.IsRenderable)
{
pix = bgPix;
}
// If current pixel is the same as previous pixel, don't
// draw it
if (pix.Equals(prevPix))
{
continue;
}
// Do we have to change the background and foreground
// colors for this pixel?
if (!pix.backgroundColor.Equals(bgColor))
{
bgColor = pix.backgroundColor;
Console.BackgroundColor = bgColor;
}
if (!pix.foregroundColor.Equals(fgColor))
{
fgColor = pix.foregroundColor;
Console.ForegroundColor = fgColor;
}
// Position cursor
Console.SetCursorPosition(x, y);
// Render pixel
Console.Write(pix.shape);
}
// New line
Console.WriteLine();
}
// Setup frame buffers
frameAux = _frameNext;
_frameNext = _framePrev;
_framePrev = frameAux;
}