private static void DrawGridCells(IGameState state)
{
GL.LineWidth(5.0f);
var deltaX = 2.0f / (float)state.GridWidth;
var deltaY = 2.0f / (float)state.GridHeight;
var cell = new Box2D(0, 0, deltaX, deltaY);
for (int u = 0; u < state.GridWidth; ++u)
{
for (int v = 0; v < state.GridHeight; ++v)
{
cell.X = deltaX * u - 1.0f;
cell.Y = 1.0f - deltaY * (v + 1);
switch (state[u, v])
{
case FieldType.DIAMONT:
DrawDiamont(cell);
break;
case FieldType.CROSS:
DrawCross(cell);
break;
default: break;
}
}
}
}
/// <summary>
/// draws a GL quad, textured with an animation.
/// </summary>
/// <param name="rectangle">coordinates ofthe GL quad</param>
/// <param name="totalSeconds">animation position in seconds</param>
public void Draw(Box2D rectangle, float totalSeconds)
{
var id = (int)CalcAnimationFrame(totalSeconds);
textures[id].BeginUse();
rectangle.DrawTexturedRect(Box2D.BOX01);
textures[id].EndUse();
}
public Enemy(Component<Box2D> frame, float absoluteTime, float speedY)
{
this.frame = frame.Value;
this.speedY = speedY;
lastUpdate = absoluteTime;
startTime = absoluteTime;
}
public ConstantMovement(Box2D frame, float absoluteTime, float speedX, float speedY)
{
this.SpeedX = speedX;
this.SpeedY = speedY;
this.Frame = frame;
lastUpdate = absoluteTime;
}
private void GameWindow_RenderFrame(object sender, FrameEventArgs e)
{
GL.Clear(ClearBufferMask.ColorBufferBit);
//setup blending equation Color = Color_s · alpha + Color_d · (1 - alpha)
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.BlendEquation(BlendEquationMode.FuncAdd);
GL.Enable(EnableCap.Blend);
var rect = new Box2D(-.75f, -.75f, .5f, .5f);
DrawRect(rect, new Color4(.5f, .7f, .1f, 1));
rect.X += .25f;
rect.Y += .25f;
DrawRect(rect, new Color4(.7f, .5f, .9f, .5f));
rect.X += .25f;
rect.Y += .25f;
DrawRect(rect, new Color4(.7f, .5f, .9f, .5f));
rect.X += .25f;
rect.Y += .25f;
DrawRect(rect, new Color4(.5f, .7f, 1, .5f));
rect.X += .25f;
rect.Y += .25f;
DrawRect(rect, new Color4(.5f, .7f, 1, .5f));
GL.Disable(EnableCap.Blend);
}
public void DrawScreen(Box2D clipFrame, uint points)
{
GL.Clear(ClearBufferMask.ColorBufferBit);
GL.LoadIdentity();
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
if (null != clipFrame)
{
foreach (IDrawable drawable in drawables)
{
if (clipFrame.Intersects(drawable.Rect))
{
drawable.Draw();
}
}
}
else
{
foreach (IDrawable drawable in drawables)
{
drawable.Draw();
}
}
Print(-0.15f, 0.0f, 0.0f, 0.04f, points.ToString());
GL.Disable(EnableCap.Blend);
}
/// <summary>
/// draws a GL quad, textured with an animation.
/// </summary>
/// <param name="rectangle">coordinates ofthe GL quad</param>
/// <param name="totalSeconds">animation position in seconds</param>
public void Draw(Box2D rectangle, float totalSeconds)
{
spriteSheet.BeginUse();
var id = CalcAnimationSpriteID(FromID, ToID, AnimationLength, totalSeconds);
spriteSheet.Draw(id, rectangle);
spriteSheet.EndUse();
}
private void DrawBox(Box2D rect, float depth)
{
GL.Begin(PrimitiveType.Quads);
GL.Vertex3(rect.X, rect.Y, depth);
GL.Vertex3(rect.MaxX, rect.Y, depth);
GL.Vertex3(rect.MaxX, rect.MaxY, depth);
GL.Vertex3(rect.X, rect.MaxY, depth);
GL.End();
}
public static void DrawTexturedRect(this Box2D rect, Box2D texCoords)
{
GL.Begin(PrimitiveType.Quads);
GL.TexCoord2(texCoords.X, texCoords.Y); GL.Vertex2(rect.X, rect.Y);
GL.TexCoord2(texCoords.MaxX, texCoords.Y); GL.Vertex2(rect.MaxX, rect.Y);
GL.TexCoord2(texCoords.MaxX, texCoords.MaxY); GL.Vertex2(rect.MaxX, rect.MaxY);
GL.TexCoord2(texCoords.X, texCoords.MaxY); GL.Vertex2(rect.X, rect.MaxY);
GL.End();
}
private void DrawBox(Box2D rect)
{
GL.Begin(PrimitiveType.Quads);
GL.Vertex2(rect.X, rect.Y);
GL.Vertex2(rect.MaxX, rect.Y);
GL.Vertex2(rect.MaxX, rect.MaxY);
GL.Vertex2(rect.X, rect.MaxY);
GL.End();
}
private static void DrawDiamont(Box2D o)
{
GL.Begin(PrimitiveType.Quads);
GL.Vertex2(o.CenterX, o.Y);
GL.Vertex2(o.MaxX, o.CenterY);
GL.Vertex2(o.CenterX, o.MaxY);
GL.Vertex2(o.X, o.CenterY);
GL.End();
}
private static void DrawCross(Box2D o)
{
GL.Begin(PrimitiveType.Lines);
GL.Vertex2(o.X, o.Y);
GL.Vertex2(o.MaxX, o.MaxY);
GL.Vertex2(o.MaxX, o.Y);
GL.Vertex2(o.X, o.MaxY);
GL.End();
}
public ComponentPlayer(Box2D frame, Box2D clipFrame)
{
if (null == frame)
{
throw new Exception("Valid frame needed");
}
this.frame = frame;
this.clipFrame = clipFrame;
this.Shoot = false;
}
private void DrawRect(Box2D rectangle, Color4 color)
{
GL.Color4(color);
GL.Begin(PrimitiveType.Quads);
GL.Vertex2(rectangle.X, rectangle.Y);
GL.Vertex2(rectangle.MaxX, rectangle.Y);
GL.Vertex2(rectangle.MaxX, rectangle.MaxY);
GL.Vertex2(rectangle.X, rectangle.MaxY);
GL.End();
}
private void Draw(Box2D Rectanlge)
{
GL.Color3(Color.White);
GL.Begin(PrimitiveType.Quads);
GL.TexCoord2(0.0f, 0.0f); GL.Vertex2(Rectanlge.X, Rectanlge.Y);
GL.TexCoord2(1.0f, 0.0f); GL.Vertex2(Rectanlge.MaxX, Rectanlge.Y);
GL.TexCoord2(1.0f, 1.0f); GL.Vertex2(Rectanlge.MaxX, Rectanlge.MaxY);
GL.TexCoord2(0.0f, 1.0f); GL.Vertex2(Rectanlge.X, Rectanlge.MaxY);
GL.End();
}
static void drawPaddle(Box2D frame)
{
GL.Begin(PrimitiveType.Quads);
GL.Color3(Color.Green);
GL.Vertex2(frame.X, frame.Y);
GL.Vertex2(frame.MaxX, frame.Y);
GL.Vertex2(frame.MaxX, frame.MaxY);
GL.Vertex2(frame.X, frame.MaxY);
GL.End();
}
public IDrawable CreateDrawable(string type, Box2D frame, IAnimation animation)
{
Texture tex;
if (this.registeredTypes.TryGetValue(type, out tex))
{
IDrawable drawable = new AnimatedSprite(tex, frame, animation);
drawables.Add(drawable);
return drawable;
}
throw new Exception("Unregisterd type " + type.ToString());
}
private static void DrawTexturedRect(Box2D rect, Texture tex, Box2D texCoords)
{
tex.BeginUse();
GL.Begin(PrimitiveType.Quads);
GL.TexCoord2(texCoords.X, texCoords.Y); GL.Vertex2(rect.X, rect.Y);
GL.TexCoord2(texCoords.MaxX, texCoords.Y); GL.Vertex2(rect.MaxX, rect.Y);
GL.TexCoord2(texCoords.MaxX, texCoords.MaxY); GL.Vertex2(rect.MaxX, rect.MaxY);
GL.TexCoord2(texCoords.X, texCoords.MaxY); GL.Vertex2(rect.X, rect.MaxY);
GL.End();
tex.EndUse();
}
private void DrawTexturedRect(Box2D Rectangle, Texture tex)
{
GL.Color3(Color.White);
tex.BeginUse();
GL.Begin(PrimitiveType.Quads);
GL.TexCoord2(0.0f, 0.0f); GL.Vertex2(Rectangle.X, Rectangle.Y);
GL.TexCoord2(1.0f, 0.0f); GL.Vertex2(Rectangle.MaxX, Rectangle.Y);
GL.TexCoord2(1.0f, 1.0f); GL.Vertex2(Rectangle.MaxX, Rectangle.MaxY);
GL.TexCoord2(0.0f, 1.0f); GL.Vertex2(Rectangle.X, Rectangle.MaxY);
GL.End();
tex.EndUse();
}
private static void DrawEnemy(Box2D o)
{
GL.Begin(PrimitiveType.Triangles);
GL.Color3(Color.White);
GL.Vertex2(o.CenterX, o.CenterY);
GL.Vertex2(o.MaxX, o.CenterY);
GL.Vertex2(o.MaxX, o.MaxY);
GL.Color3(Color.Violet);
GL.Vertex2(o.CenterX, o.CenterY);
GL.Vertex2(o.X, o.CenterY);
GL.Vertex2(o.X, o.Y);
GL.End();
}
public static bool PushYRangeInside(this Box2D rectangleA, Box2D rectangleB)
{
if (rectangleA.SizeY > rectangleB.SizeY) return false;
if (rectangleA.Y < rectangleB.Y)
{
rectangleA.Y = rectangleB.Y;
}
if (rectangleA.MaxY > rectangleB.MaxY)
{
rectangleA.MaxY = rectangleB.MaxY;
}
return true;
}
public static bool PushXRangeInside(this Box2D rectangleA, Box2D rectangleB)
{
if (rectangleA.SizeX > rectangleB.SizeX) return false;
if (rectangleA.X < rectangleB.X)
{
rectangleA.X = rectangleB.X;
}
if (rectangleA.MaxX > rectangleB.MaxX)
{
rectangleA.MaxX = rectangleB.MaxX;
}
return true;
}
private static void DrawTexturedRect(Box2D Rect, Texture tex)
{
//the texture has to be enabled before use
tex.BeginUse();
GL.Begin(PrimitiveType.Quads);
//when using textures we have to set a texture coordinate for each vertex
//by using the TexCoord command BEFORE the Vertex command
GL.TexCoord2(0.0f, 0.0f); GL.Vertex2(Rect.X, Rect.Y);
GL.TexCoord2(1.0f, 0.0f); GL.Vertex2(Rect.MaxX, Rect.Y);
GL.TexCoord2(1.0f, 1.0f); GL.Vertex2(Rect.MaxX, Rect.MaxY);
GL.TexCoord2(0.0f, 1.0f); GL.Vertex2(Rect.X, Rect.MaxY);
GL.End();
//the texture is disabled, so no other draw calls use this texture
tex.EndUse();
}
public static bool PushYRangeInside(this Box2D rectangleA, Box2D rectangleB)
{
if (rectangleA.SizeY > rectangleB.SizeY)
{
return(false);
}
if (rectangleA.Y < rectangleB.Y)
{
rectangleA.Y = rectangleB.Y;
}
if (rectangleA.MaxY > rectangleB.MaxY)
{
rectangleA.MaxY = rectangleB.MaxY;
}
return(true);
}
public static bool PushXRangeInside(this Box2D rectangleA, Box2D rectangleB)
{
if (rectangleA.SizeX > rectangleB.SizeX)
{
return(false);
}
if (rectangleA.X < rectangleB.X)
{
rectangleA.X = rectangleB.X;
}
if (rectangleA.MaxX > rectangleB.MaxX)
{
rectangleA.MaxX = rectangleB.MaxX;
}
return(true);
}
/// <summary>
/// Calculates the AABR in the overlap
/// Returns null if no intersection
/// </summary>
/// <param name="rectangleB"></param>
/// <returns>AABR in the overlap</returns>
public static Box2D Overlap(this Box2D rectangleA, Box2D rectangleB)
{
Box2D overlap = null;
if (rectangleA.Intersects(rectangleB))
{
overlap = new Box2D(0.0f, 0.0f, 0.0f, 0.0f);
overlap.X = (rectangleA.X < rectangleB.X) ? rectangleB.X : rectangleA.X;
overlap.Y = (rectangleA.Y < rectangleB.Y) ? rectangleB.Y : rectangleA.Y;
overlap.SizeX = (rectangleA.MaxX < rectangleB.MaxX) ? rectangleA.MaxX - overlap.X : rectangleB.MaxX - overlap.X;
overlap.SizeY = (rectangleA.MaxY < rectangleB.MaxY) ? rectangleA.MaxY - overlap.Y : rectangleB.MaxY - overlap.Y;
}
return(overlap);
}
/// <summary>
/// Create a new font that can be printed in OpenGL
/// </summary>
/// <param name="texture">texture containing a equally spaced grid of characters</param>
/// <param name="charactersPerLine">number of characters per grid row</param>
/// <param name="firstAsciiCode">ascii code of upper left most character in the grid</param>
/// <param name="characterBoundingBoxWidth">bounding box width of each character cell, allows to zoom in/out of each character</param>
/// <param name="characterBoundingBoxHeight">bounding box height of each character cell, allows to zoom in/out of each character</param>
/// <param name="characterSpacing">how much to move to the right after drawing a single character</param>
public TextureFont(Texture texture, uint charactersPerLine = 16, byte firstAsciiCode = 0
, float characterBoundingBoxWidth = 1.0f, float characterBoundingBoxHeight = 1.0f, float characterSpacing = 1.0f)
{
this.texFont = new SpriteSheet(texture, charactersPerLine, characterBoundingBoxWidth, characterBoundingBoxHeight);
// Creating 256 Display Lists
this.baseList = (uint)GL.GenLists(256);
//foreach of the 256 possible characters create a a quad
//with texture coordinates and store it in a display list
var rect = new Box2D(0, 0, 1, 1);
for (uint asciiCode = 0; asciiCode < 256; ++asciiCode)
{
GL.NewList((this.baseList + asciiCode), ListMode.Compile);
texFont.Draw(asciiCode - firstAsciiCode, rect);
GL.Translate(characterSpacing, 0, 0); // Move To The next character
GL.EndList();
}
}
/// <summary>
/// Calculates the AABR in the overlap
/// Returns null if no intersection
/// </summary>
/// <param name="rectangleB"></param>
/// <returns>AABR in the overlap</returns>
public static Box2D Overlap(this Box2D rectangleA, Box2D rectangleB)
{
Box2D overlap = null;
if (rectangleA.Intersects(rectangleB))
{
overlap = new Box2D(0.0f, 0.0f, 0.0f, 0.0f);
overlap.X = (rectangleA.X < rectangleB.X) ? rectangleB.X : rectangleA.X;
overlap.Y = (rectangleA.Y < rectangleB.Y) ? rectangleB.Y : rectangleA.Y;
overlap.SizeX = (rectangleA.MaxX < rectangleB.MaxX) ? rectangleA.MaxX - overlap.X : rectangleB.MaxX - overlap.X;
overlap.SizeY = (rectangleA.MaxY < rectangleB.MaxY) ? rectangleA.MaxY - overlap.Y : rectangleB.MaxY - overlap.Y;
}
return overlap;
}
/// <summary>
/// If an intersection with the frame occurs do the minimal translation to undo the overlap
/// </summary>
/// <param name="rectangleB">The AABR to check for intersect</param>
public static void UndoOverlap(this Box2D rectangleA, Box2D rectangleB)
{
if (rectangleA.Intersects(rectangleB))
{
Vector2[] directions = new Vector2[]
{
new Vector2(rectangleB.MaxX - rectangleA.X, 0),
new Vector2(rectangleB.X - rectangleA.MaxX, 0),
new Vector2(0, rectangleB.MaxY - rectangleA.Y),
new Vector2(0, rectangleB.Y - rectangleA.MaxY)
};
Vector2 minimum = directions.Aggregate((curMin, x) => (curMin == null || (x.Length) < curMin.Length) ? x : curMin);
rectangleA.X += minimum.X;
rectangleA.Y += minimum.Y;
}
}
/// <summary>
/// If an intersection with the frame occurs do the minimal translation to undo the overlap
/// </summary>
/// <param name="rectangleB">The AABR to check for intersect</param>
public static void UndoOverlap(this Box2D rectangleA, Box2D rectangleB)
{
if (rectangleA.Intersects(rectangleB))
{
Vector2[] directions = new Vector2[]
{
new Vector2(rectangleB.MaxX - rectangleA.X, 0),
new Vector2(rectangleB.X - rectangleA.MaxX, 0),
new Vector2(0, rectangleB.MaxY - rectangleA.Y),
new Vector2(0, rectangleB.Y - rectangleA.MaxY)
};
Vector2 minimum = directions.Aggregate((curMin, x) => (curMin == null || (x.Length) < curMin.Length) ? x : curMin);
rectangleA.X += minimum.X;
rectangleA.Y += minimum.Y;
}
}
private void CreateEnemy(float absoluteTime)
{
var container = registry.CreateComponentContainer();
var frame = new Box2D(0.5f, 1.0f, 0.06f, 0.1f);
var compFrame = new Component<Box2D>(frame);
registry.RegisterComponentTo(container, compFrame);
var enemy = new Enemy(compFrame, absoluteTime, - 0.3f);
registry.RegisterComponentTo(container, enemy);
var periodicEnemyBullet = new ComponentPeriodicUpdate(absoluteTime, 1.5f);
periodicEnemyBullet.OnPeriodElapsed += (s, time) =>
{
CreateEnemyBullet(time, frame.X, frame.Y);
CreateEnemyBullet(time, frame.MaxX, frame.Y);
};
registry.RegisterComponentTo(container, periodicEnemyBullet);
registry.RegisterComponentTo(container, new ComponentClipper(visibleFrame, frame, () => Remove(container)));
registry.RegisterComponentTo(container, new Collidable(frame));
registry.RegisterComponentTo(container, new Component<IDrawable>(renderer.CreateDrawable("enemy", frame)));
}
public void DrawScreen(IEnumerable<Box2D> enemies, IEnumerable<Box2D> bullets, Box2D player)
{
GL.Clear(ClearBufferMask.ColorBufferBit);
GL.LoadIdentity();
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
texEnemy.BeginUse();
foreach (Box2D enemy in enemies)
{
Draw(enemy);
}
texEnemy.EndUse();
texBullet.BeginUse();
foreach (Box2D bullet in bullets)
{
Draw(bullet);
}
texBullet.EndUse();
texPlayer.BeginUse();
Draw(player);
texPlayer.EndUse();
GL.Disable(EnableCap.Blend);
}
private static void DrawTexturedRect(Box2D rect, Texture tex, Box2D texCoords)
{
tex.BeginUse();
rect.DrawTexturedRect(texCoords);
tex.EndUse();
}
public void Draw(uint spriteID, Box2D rectangle)
{
Box2D texCoords = CalcSpriteTexCoords(spriteID);
rectangle.DrawTexturedRect(texCoords);
}
public static void TransformCenter(this Box2D rectangle, Matrix3 M)
{
/*var newPos = M.Transform(rectangle.CenterX, rectangle.CenterY);
* rectangle.CenterX = newPos.X;
* rectangle.CenterY = newPos.Y;*/
}