internal static void Render(bool allowextras = true)
{
screen.Clear();
_fbcache.Clear();
camDir = game.game.GetLocalPlayer().dir;
float fov = player.cvarFov.Valuef() / 100;
camPlane.x = camDir.y * (fov * 1.33f);
camPlane.y = -camDir.x * (fov * 1.33f);
sb = cache.GetTexture(world.skybox);
centersprite = new screensprite {
dist = -1
};
DrawWorld((int)DispHeight);
world.RefreshSprites();
DrawSprites((int)engine.SCREEN_HEIGHT);
PostProcess();
var velocity = new vector(0, 0);
if (!ReferenceEquals(null, _plast))
{
velocity = world.Player.pos - _plast;
}
world.Player.weapon.Draw(velocity);
_plast = world.Player.pos;
}
private static void DrawSprites(int h)
{
var nsprites = world.sprites.Length;
var spriteorder = SortSprites();
int w = (int)engine.SCREEN_WIDTH;
for (var i = 0; i < nsprites; i++)
{
var pos = new vector((float)spriteorder[i].x - world.Player.pos.x,
(float)spriteorder[i].y - world.Player.pos.y);
// transform
var invDet = (float)1.0 / (camPlane.x * camDir.y - camDir.x * camPlane.y);
var transform = new vector(invDet * (camDir.y * pos.x - camDir.x * pos.y),
invDet * (-camPlane.y * pos.x + camPlane.x * pos.y));
if (transform.x == 0)
{
continue;
}
var s = world.sprites[spriteorder[i].index];
if (!s.visible)
{
return;
}
var screenx = (int)(w / 2 * (1 + transform.x / transform.y));
var scaleWidth = Math.Abs((int)(h / transform.y / (16 / s.sprwidth)));
var scaleHeight = Math.Abs((int)(h / transform.y));
var ymin = (-scaleHeight / 2 + h / 2).Clamp(0, h);
var ymax = (scaleHeight / 2 + h / 2).Clamp(0, h);
var xmin = (-scaleWidth / 2 + screenx).Clamp(0, w);
var xmax = (scaleWidth / 2 + screenx).Clamp(0, w);
// draw
for (var x = xmin; x < xmax; x++)
{
if (!(x >= BORDER && x < w - BORDER))
{
continue;
}
var txs = s.sprx * s.sprwidth;
var texelx = 256 * (x - (-scaleWidth / 2 + screenx)) * (int)s.sprwidth / scaleWidth / 256;
var vis = transform.y <= 10 - _zBuffer[x, screen.height / 2];
if (transform.y > 0 && x > 0 && x < w && vis)
{
if (x == screen.width / 2 &&
(centersprite.dist == -1 || centersprite.dist > spriteorder[i].dist) && !s.fetchignore)
{
centersprite = new screensprite
{
index = spriteorder[i].index,
dist = (float)spriteorder[i].dist
};
}
for (var y = ymin; y < ymax; y++)
{
if (!(y >= BORDER && y < h - HUDSIZE))
{
continue;
}
var d = y * 2 - h + scaleHeight;
var texely = d * (int)s.sprheight / scaleHeight / 2;
texely = texely.Clamp(0, (int)s.sprheight);
var c = s.Tex.GetPixel(txs + (uint)texelx, (uint)texely);
if (c != magicpink)
{
_zBuffer[x, y] = 10 - (float)spriteorder[i].dist;
var world = new vector(s.pos.x, s.pos.y) * TEXSIZE;
var ic = Additive(c, level.lightmap[(int)world.x, (int)world.y]);
var v = new vector(x, y);
if (_fbcache.ContainsKey(v))
{
_fbcache.Remove(v);
}
screen.SetPixel((uint)x, (uint)y, ic);
}
}
}
}
}
}