public static Color Divide(this Color c, float n)
{
return(new Color(
(byte)(c.R / n),
(byte)(c.G / n),
(byte)(c.B / n)));
}
private void LoadTextures()
{
Texture allWalls = new Texture(ContentPath + "walls.jpeg");
int Columns = (int)allWalls.Width / TextureSize;
int Rows = (int)allWalls.Height / TextureSize;
// cookie undid his stupid! :D
WallTextures = new Texture[Columns * Rows];
for (int cellY = 0; cellY < Rows; cellY++)
{
for (int cellX = 0; cellX < Columns; cellX++)
{
WallTextures[(Columns * cellY) + cellX] = new Texture((ushort)TextureSize, (ushort)TextureSize);
for (int texX = 0; texX < TextureSize; texX++)
{
for (int texY = 0; texY < TextureSize; texY++)
{
Color wallPixel = allWalls.GetPixel(cellX * TextureSize + texX,
cellY * TextureSize + texY);
// TODO: Workaround for chroma edge case, remove this line when fixed
wallPixel = new Color(wallPixel.A, wallPixel.B, wallPixel.G, wallPixel.R);
WallTextures[(Columns * cellY) + cellX].SetPixel(
texX, texY,
wallPixel
);
}
}
WallTextures[(Columns * cellY) + cellX].Flush();
}
}
}
public static void Rectangle(
this RenderContext context,
ShapeMode mode,
Vector2 position,
Size size,
Color color
) => context.Rectangle(mode, position, size.Width, size.Height, color);
public static void Circle(
this RenderContext context,
ShapeMode mode,
Vector2 position,
float radius,
Color color
) => context.Circle(mode, position.X, position.Y, radius, color);
public Label(Vector2 position, string text, TrueTypeFont font = null, int fontSize = 12) : base(position, Vector2.One)
{
Text = text;
Color = Color.White;
Font = font ?? new TrueTypeFont(UiContentLoader.Instance.DefaultFontPath, fontSize);
Font.Size = fontSize;
}
public static void Rectangle(
this RenderContext context,
ShapeMode mode,
Vector2 position,
float width,
float height,
Color color
) => context.Rectangle(mode, position.X, position.Y, width, height, color);
public static void Triangle(
this RenderContext context,
ShapeMode mode,
Vector2 a,
Vector2 b,
Vector2 c,
Color color
) => context.Triangle(mode, a.X, a.Y, b.X, b.Y, c.X, c.Y, color);
public static void Ellipse(
this RenderContext context,
ShapeMode mode,
Vector2 position,
Vector2 radii,
float rotation,
Color color
) => context.Ellipse(mode, position.X, position.Y, radii.X, radii.Y, rotation, color);
public static void DrawString(
this RenderContext context,
IFontProvider font,
string text,
float x,
float y,
Color color
) => context.DrawString(font, text, x, y, (_, _, p) => new(p) { Color = color });
public static void Arc(
this RenderContext context,
ShapeMode mode,
Vector2 position,
float radius,
float startAngle,
float endAngle,
Color color
) => context.Arc(mode, position.X, position.Y, radius, startAngle, endAngle, color);
/// <summary>
/// Draws a rectangle used for HUD elements.
/// </summary>
/// <param name="context">RenderContext to draw onto</param>
/// <param name="rect">The rectangle to draw</param>
/// <param name="lineWidth">How thicc the line should be</param>
/// <param name="whiteOrCopyPen">0 = normal colors, 1 = white and right half isn't drawn, 2 = both halves are dark</param>
private void DrawHudRectangle(RenderContext context, Rectangle rect, int lineWidth, int whiteOrCopyPen)
{
float oldThickness = Graphics.LineThickness;
Graphics.LineThickness = 1;
rect.X++;
rect.Width--;
// Top and left lines
Color colorToDraw = whiteOrCopyPen == 1 ? Constants.RightRectangleColor : Constants.LeftRectangleColor;
for (int i = 0; i < lineWidth; i++)
{
context.Line(new Vector2(rect.X, rect.Y + i),
new Vector2(rect.X + rect.Width - i - 1, rect.Y + i),
colorToDraw);
context.Line(new Vector2(rect.X + i, rect.Y),
new Vector2(rect.X + i, rect.Y + rect.Height - i - 1),
colorToDraw);
}
if (whiteOrCopyPen != 1)
{
// Right and bottom lines
Color newColorToDraw = whiteOrCopyPen < 2 ? Constants.RightRectangleColor : Constants.LeftRectangleColor;
for (int i = 0; i < lineWidth; i++)
{
context.Line(new Vector2(rect.X + rect.Width - i, rect.Y + i + 1),
new Vector2(rect.X + rect.Width - i, rect.Y + rect.Height),
newColorToDraw);
context.Line(new Vector2(rect.X + rect.Width, rect.Y + rect.Height - i - 1),
new Vector2(rect.X + i, rect.Y + rect.Height - i),
newColorToDraw);
}
}
Graphics.LineThickness = oldThickness;
}
public static void Rectangle(
this RenderContext context,
ShapeMode mode,
RectangleF rectangle,
Color color
) => context.Rectangle(mode, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height, color);
public static void Line(
this RenderContext context,
Vector2 start,
Vector2 end,
Color color
) => context.Line(start.X, start.Y, end.X, end.Y, color);
public static void Clear(
this RenderContext context,
Color color
) => context.Clear(color.R, color.G, color.B, color.A);
protected override void Draw(RenderContext context)
{
context.Clear(Color.Gray);
int leftRayX = 0, leftRayY = 0, rightRayX = 0, rightRayY = 0;
List <Object> spritesDrawn = new List <Object>();
for (int x = 0; x <= ScreenWidth; x += ScreenWidthDivision)
{
// Calculate the direction needed for the ray, and the cam space
double cameraX = 2 * x / (double)ScreenWidth - 1;
double rayDirX = DirX + PlaneX * cameraX;
double rayDirY = DirY + PlaneY * cameraX;
// Where is the ray located in the map?
int mapX = (int)PlayerPos.X;
int mapY = (int)PlayerPos.Y;
// These variables tell us how far until the next X side of the matrix
// Or the next Y side, relative to the current position
double sideDistX;
double sideDistY;
// Same principle as the sideDistX/Y except its from the *last* X or Y side
// Also prevent deviding by 0 (does C# even care about this? Should look that up)
double deltaDistX = (rayDirY == 0) ? 0 : ((rayDirX == 0) ? 1 : Abs(1 / rayDirX));
double deltaDistY = (rayDirX == 0) ? 0 : ((rayDirY == 0) ? 1 : Abs(1 / rayDirY));
double perpWallDist;
// Either -1 or 1 depending on what direction we need to step in next
int stepX;
int stepY;
int hit = 0; // Did we hit a wall?
int side = 0; // Which side we hit the wall on (North/South or East/West)
// Actually calculate side and directions
if (rayDirX < 0)
{
stepX = -1;
sideDistX = (PlayerPos.X - mapX) * deltaDistX;
}
else
{
stepX = 1;
sideDistX = (mapX + 1.0 - PlayerPos.X) * deltaDistX;
}
if (rayDirY < 0)
{
stepY = -1;
sideDistY = (PlayerPos.Y - mapY) * deltaDistY;
}
else
{
stepY = 1;
sideDistY = (mapY + 1.0 - PlayerPos.Y) * deltaDistY;
}
// Finally, Actually, do the raycasting using the DDA algorithm
while (hit == 0)
{
// Jump to the next map square/X direction/Y direction
if (sideDistX < sideDistY)
{
sideDistX += deltaDistX;
mapX += stepX;
side = 0;
}
else
{
sideDistY += deltaDistY;
mapY += stepY;
side = 1;
}
if (Abs(mapX) > 255 || Abs(mapY) > 255)
{
break;
}
if (mapX >= WorldMap.GetLength(0) || mapY >= WorldMap.GetLength(1))
{
continue;
}
if (mapX < 0 || mapY < 0)
{
continue;
}
// Check if ray has hit a wall
if (WorldMap[mapX, mapY] > 0)
{
hit = 1;
}
if (RenderSprites)
{
// Check if a sprite is in view
if (SpriteMap[mapX, mapY] != null)
{
if (!spritesDrawn.Contains(SpriteMap[mapX, mapY]))
{
// Calculate sprite distance from the player so we can render it properly
Object sprite = SpriteMap[mapX, mapY];
double spriteDist;
// Calculate distance projected on camera direction (Euclidean distance will give fisheye effect!)
if (side == 0)
{
spriteDist = (mapX - PlayerPos.X + (1 - stepX) / 2) / rayDirX;
}
else
{
spriteDist = (mapY - PlayerPos.Y + (1 - stepY) / 2) / rayDirY;
}
int usableDist = (int)(spriteDist * 1000);
sprite.ZIndex = usableDist;
spritesDrawn.Add(sprite);
context.Batch(() => sprite.Draw(
context,
PlayerPos,
new Vector2((float)DirX, (float)DirY),
new Vector2((float)PlaneX, (float)PlaneY),
new Vector2(ScreenWidth, ScreenHeight)
), (int)sprite.ZIndex);
}
}
}
}
if (hit == 0)
{
continue;
}
if (x == 0)
{
leftRayX = mapX;
leftRayY = mapY;
}
else if (x == ScreenWidth)
{
rightRayX = mapX;
rightRayY = mapY;
}
// Calculate distance projected on camera direction (Euclidean distance will give fisheye effect!)
if (side == 0)
{
perpWallDist = (mapX - PlayerPos.X + (1 - stepX) / 2) / rayDirX;
}
else
{
perpWallDist = (mapY - PlayerPos.Y + (1 - stepY) / 2) / rayDirY;
}
// Calculate height of the strip that we draw to the screen
int lineHeight = (int)(ScreenHeight / perpWallDist);
// Calculate lowest and highest pixel to fill in current stripe
int drawStart = -lineHeight / 2 + ScreenHeight / 2;
if (drawStart < 0)
{
drawStart = 0;
}
int drawEnd = lineHeight / 2 + ScreenHeight / 2;
if (drawEnd >= ScreenHeight)
{
drawEnd = ScreenHeight - 1;
}
// Calculate texture rendering
int texNum = WorldMap[mapX, mapY] - 1; // Subtract 1 so we are 0 indexed
// Calculate where the wall was hit
double wallX;
if (side == 0)
{
wallX = PlayerPos.Y + perpWallDist * rayDirY;
}
else
{
wallX = PlayerPos.X + perpWallDist * rayDirX;
}
wallX -= Floor(wallX);
// Calculate the X coordinate of the txture
int texX = (int)(wallX * TextureSize);
if (side == 0 && rayDirX > 0)
{
texX = TextureSize - texX - 1;
}
if (side == 1 && rayDirY < 0)
{
texX = TextureSize - texX - 1;
}
Color color;
if (!FlatRender)
{
// Draw textures using strips instead of pixels
int texY = Min(drawStart, -(lineHeight - ScreenHeight) / 2);
Texture stripTex = WallTextures[texNum];
Rectangle SourceRectangle = new Rectangle(texX, 0, ScreenWidthDivision, TextureSize);
Vector2 Position = new Vector2(x, texY);
Vector2 Scale = new Vector2(1, (float)lineHeight / TextureSize);
Color StripColor = side == 1 ? Color.Gray : Color.White;
int usableDist = (int)(perpWallDist * 1000);
context.Batch(() =>
{
if (!stripTex.ColorMask.Equals(StripColor))
{
stripTex.ColorMask = StripColor;
}
context.DrawTexture(stripTex, Position, Scale, Vector2.Zero, 0, SourceRectangle);
}, usableDist);
}
else
{
// Debugging wall colors for flat renderer
color = (WorldMap[mapX, mapY]) switch
{
1 => Color.Red,
2 => Color.Green,
3 => Color.Blue,
4 => Color.Beige,
5 => Color.Aquamarine,
6 => Color.HotPink,
7 => Color.Purple,
8 => Color.Brown,
_ => Color.Yellow,
};
// Darken the color to create perspective
if (side == 1)
{
color.R /= 2;
color.G /= 2;
color.B /= 2;
}
int usableDist = (int)(perpWallDist * 1000);
// Actually draw the pixels of the stripe as a vertical line
DrawColorStrip(context, x, drawStart, drawEnd, usableDist, color);
}
}
if (RenderSprites)
{
foreach (Enemy enemy in EnemyList)
{
// Calculate distance projected on camera direction (Euclidean distance will give fisheye effect!)
float dX = PlayerPos.X - enemy.PosX;
float dY = PlayerPos.Y - enemy.PosY;
// Calculate sprite distance from the player so we can render it properly
double spriteDist;
spriteDist = Sqrt(dX * dX + dY * dY);
int usableDist = (int)(spriteDist * 1000);
enemy.ZIndex = usableDist;
context.Batch(() => enemy.Draw(
context,
PlayerPos,
new Vector2((float)DirX, (float)DirY),
new Vector2((float)PlaneX, (float)PlaneY),
new Vector2(ScreenWidth, ScreenHeight)
), (int)enemy.ZIndex);
}
}
context.DrawBatch(DrawOrder.FrontToBack);
if (MiniMap)
{
// Move these to meta variables later, im tired
Vector2 MinimapSize = new Vector2(300, 300);
Vector2 MinimapPosition = new Vector2(ScreenWidth - MinimapSize.X, 0);
// Render minimap
for (int x = 0; x < MapWidth; x++)
{
for (int y = 0; y < MapHeight; y++)
{
// Debugging wall colors for flat renderer
var color = (WorldMap[y, x]) switch
{
1 => Color.Red,
2 => Color.Green,
3 => Color.Blue,
4 => Color.Beige,
5 => Color.Aquamarine,
6 => Color.HotPink,
7 => Color.Purple,
8 => Color.Brown,
_ => Color.Yellow,
};
Vector2 tileSize = new Vector2(MinimapSize.X / MapWidth, MinimapSize.Y / MapHeight);
Vector2 tilePos = new Vector2(tileSize.X * x, tileSize.Y * y);
context.Rectangle(ShapeMode.Fill, MinimapPosition + tilePos, tileSize.X, tileSize.Y, color);
}
}
Vector2 tileRefSize = new Vector2(MinimapSize.X / MapWidth, MinimapSize.Y / MapHeight);
Vector2 playerDotSize = tileRefSize / 2;
Vector2 playerDotPos = new Vector2(tileRefSize.X * PlayerPos.Y, tileRefSize.Y * PlayerPos.X);
playerDotPos -= playerDotSize / 2;
context.Rectangle(ShapeMode.Fill, MinimapPosition + playerDotPos, playerDotSize.X, playerDotSize.Y, Color.Red);
context.Line(MinimapPosition + playerDotPos + (playerDotSize / 2),
MinimapPosition + new Vector2(tileRefSize.X * leftRayY, tileRefSize.Y * leftRayX),
Color.Red
);
context.Line(MinimapPosition + playerDotPos + (playerDotSize / 2),
MinimapPosition + new Vector2(tileRefSize.X * rightRayY, tileRefSize.Y * rightRayX),
Color.Red
);
foreach (Enemy enemy in EnemyList)
{
Vector2 enemyDotSize = tileRefSize / 2;
Vector2 enemyDotPos = new Vector2(tileRefSize.X * enemy.PosY, tileRefSize.Y * enemy.PosX);
enemyDotPos -= enemyDotSize / 2;
context.Rectangle(ShapeMode.Fill, MinimapPosition + enemyDotPos, enemyDotSize.X, enemyDotSize.Y, Color.LimeGreen);
}
}
DebugText = $"{PerformanceCounter.FPS} FPS\n" + DebugText;
context.DrawString(DebugFont, DebugText, Vector2.Zero, (c, i, p, g) => new GlyphTransformData()
{
Color = Color.White
});
}
private void DrawColorStrip(RenderContext context, int screenX, int drawStart, int drawEnd, int z, Color color)
{
if (drawEnd - drawStart <= 0)
{
return;
}
context.Batch(() => context.Line(new Vector2(screenX, drawStart), new Vector2(screenX, drawEnd), color), z);
}
public static void Pixel(
this RenderContext context,
Vector2 position,
Color color
) => context.Pixel(position.X, position.Y, color);
