public override void draw(Graphics graphics, Camera camera, WorldLights worldLights)
{
if (Settings.debug)
{
distanceToCamera = (float)camera.Position.getMagnitude();
Matrix4 ModelViewProjection = camera.Frustum * camera.View * StaticMatrices.UniformScaleMatrix(scale);
renderVertices = GameShapes.UnitAxes();
foreach (Vector4D vertex in renderVertices)
{
vertex.LeftMultiply(ModelViewProjection);
if (Math.Abs(vertex.Z) < Math.Abs(vertex.W))
{
vertex.divideByW();
vertex.moveOriginToCenterScreen();
}
}
PointF[] pointsAll = renderVertices.Select(x => x.getPointXY()).ToArray();
graphics.DrawLine(new Pen(Color.Cyan), pointsAll[0], pointsAll[1]);
graphics.DrawLine(new Pen(Color.Magenta), pointsAll[0], pointsAll[2]);
graphics.DrawLine(new Pen(Color.Yellow), pointsAll[0], pointsAll[3]);
}
}
/// <summary>
/// For now, the whole game is initialized right here in the construcor. All it needs is a GDI graphics object.
/// </summary>
#region Constructor
public GameHub(Graphics g)
{
/// New gadget I'm trying out to prevent repeat toggle key presses for pause and debug mode without causing pauses in engines.
toggleKeyRepeatPreventer = new ToggleKeyRepeatPreventer();
toggleKeyRepeatPreventer.registerNewToggleKey('p');
toggleKeyRepeatPreventer.registerNewToggleKey('b');
Utilities.findScreenEdges();
System.Windows.Forms.Cursor.Hide();
/// Makes the games camera. Use an FPSCamera for walking or a FreeCamera for space ship like controls
camera = new FreeCamera(new Vector4D(500, 20, -60, 1));
/// The WorldLights struct holds all of the lights for the game world. It is given to the graphics engine.
lights = new WorldLights();
lights.AmbientLights = new AmbientLight[] { new AmbientLight(10, 10, 10) };
lights.DirectionalLights = new DirectionalLight[] { /*new DirectionalLight(new Vector3D(0, 1, 0), 0, 100, 0)*/ };
lights.PointLights = new PointLight[] { new PointLight(new Vector3D(100, 100, -200), 60000, 100, 170, 240, camera),
new PointLight(new Vector3D(500, -100, 100), 30000, 200, 90, 210, camera) };
origin = new Origin(50);
graphics = new GraphicsEngineGDI(16, g, camera, lights);
physics = new PhysicsEngine(16);
graphics.Initialize();
physics.Initialize();
testObjs = new GameEntity[128];
for (int i = 0; i < 128; i++)
{
testObjs[i] = new GameObject
(i * 4 + 8, (i * 20) % 100, 8, // Position x, y, z,
0, 0, 0, // Velocity x, y, z,
0, 0, 0, // Rotation x, y, z,
10, 10, 10, // Scale x, y, z,
GameShapes.UnitCubeGDI(), 10); // Mesh, Radius
}
/// Put our test cubes into the graphics engine for depth-sorted rendering
graphics.addObjectsToRenderZSorted(testObjs.ToList());
graphics.addObjectToRenderZSorted(origin);
graphics.addObjectToRenderZSorted(lights.PointLights[0]);
graphics.addObjectToRenderZSorted(lights.PointLights[1]);
/// User input is processed by the physics engine right now.
physics.addControlRoutine(ParseInput);
/// Put our test cubes into the physics engine.
physics.addObjectsToMove(testObjs);
}
/// <summary>
/// Calculates the lighting for a face before it is drawn
/// </summary>
/// <param name="meshVertices">List of all vertices of the mesh to which this face belongs</param>
/// <param name="worldLights">Set of all the world's lights that affect this face</param>
/// <param name="position">Position of the mesh to which this face belongs, in world space</param>
public void calculateWorldLighting(Vector4D[] meshVertices, WorldLights worldLights, Vector3D position)
{
color[0] = 0;
color[1] = 0;
color[2] = 0;
normal = Vector4D.cross3D(meshVertices[vertexIndex[0]] - meshVertices[vertexIndex[1]],
meshVertices[vertexIndex[1]] - meshVertices[vertexIndex[2]]);
normal.normalize();
#region Ambient Lights
foreach (AmbientLight light in worldLights.AmbientLights)
{
color[0] += light.Red;
color[1] += light.Green;
color[2] += light.Blue;
}
#endregion
#region Directional Lights
foreach (DirectionalLight light in worldLights.DirectionalLights)
{
lightBrightness = (float)Math.Max(0, Vector3D.dot(normal, light.Direction));
color[0] += (int)(light.Red * lightBrightness);
color[1] += (int)(light.Green * lightBrightness);
color[2] += (int)(light.Blue * lightBrightness);
}
#endregion
#region Point Lights
foreach (PointLight light in worldLights.PointLights)
{
lightDirection = position - light.Position;
pointLightBrightnessFallOff = (float)(Math.Pow(lightDirection.getMagnitude(), 2) / light.Intensity);
lightDirection.normalize();
lightBrightness = (float)Math.Max(0, Vector3D.dot(normal, lightDirection) / Math.Max(1, pointLightBrightnessFallOff));
color[0] += (int)(light.Red * lightBrightness);
color[1] += (int)(light.Green * lightBrightness);
color[2] += (int)(light.Blue * lightBrightness);
}
#endregion
}
public GraphicsEngineGDI(int inverseFPMS, Graphics graphics, Camera camera, WorldLights worldLights)
: base(inverseFPMS)
{
renderQueue = new RenderQueue((Graphics g, Camera c, WorldLights l) => { });
zSortedObjects = new List <GameEntity>();
cullData = new FrustumCullingData(camera.FOV, camera.AspRat);
this.camera = camera;
this.graphics = graphics;
this.worldLights = worldLights;
backBufferContext = BufferedGraphicsManager.Current;
backBuffer = backBufferContext.Allocate(graphics, Utilities.screenBounds);
addPermanentRoutine(backBuffer.Render);
addPermanentRoutine(camera.createView);
addPermanentRoutine(ClearScreen);
addPermanentRoutine(cullAndSortRenderOrder);
}
public override void draw(Graphics graphics, Camera camera, WorldLights worldLights)
{
if (Settings.debug)
{
Vector4D centerVector = Vector4D.Zero();
centerVector.LeftMultiply(StaticMatrices.TranslationMatrix(position));
centerVector.LeftMultiply(camera.View);
distanceToCamera = (float)centerVector.getMagnitude();
centerVector.LeftMultiply(camera.Frustum);
centerVector.divideByW();
centerVector.moveOriginToCenterScreen();
Matrix4 mat = camera.Frustum * camera.View * StaticMatrices.TranslationMatrix(position) * StaticMatrices.ScaleMatrix(new Vector3D(intensity * .0005, intensity * .0005, intensity * .0005));
Vector4D[] vertices = GameShapes.Tetrahedron();
for (int i = 0; i < 4; i++)
{
vertices[i].LeftMultiply(mat);
vertices[i].divideByW();
vertices[i].moveOriginToCenterScreen();
}
PointF[] pointsAll = vertices.Select(x => x.getPointXY()).ToArray();
graphics.DrawLine(new Pen(Color.FromArgb((int)red, (int)green, (int)blue), 2), pointsAll[0], pointsAll[1]);
graphics.DrawLine(new Pen(Color.FromArgb((int)red, (int)green, (int)blue), 2), pointsAll[0], pointsAll[2]);
graphics.DrawLine(new Pen(Color.FromArgb((int)red, (int)green, (int)blue), 2), pointsAll[0], pointsAll[3]);
graphics.DrawLine(new Pen(Color.FromArgb((int)red, (int)green, (int)blue), 2), pointsAll[1], pointsAll[2]);
graphics.DrawLine(new Pen(Color.FromArgb((int)red, (int)green, (int)blue), 2), pointsAll[1], pointsAll[3]);
graphics.DrawLine(new Pen(Color.FromArgb((int)red, (int)green, (int)blue), 2), pointsAll[2], pointsAll[3]);
graphics.DrawString((intensity * .001).ToString() + "K", new Font("Arial", 12), new SolidBrush(Color.White), centerVector.getPointXY());
}
}
public override void preDraw(Graphics graphics, Camera camera, WorldLights worldLights)
{
}
public override void draw(Graphics graphics, Camera camera, WorldLights worldLights)
{
mesh.draw(graphics);
}
public override void preDraw(Graphics graphics, Camera camera, WorldLights worldLights)
{
mesh.preDraw(graphics, camera, worldLights, rotation, scale, position);
}
public abstract void preDraw(Graphics graphics, Camera camera, WorldLights worldLights);
public abstract override void draw(Graphics graphics, Camera camera, WorldLights worldLights);
/// <summary>
/// preDraw is called by the graphics engine before object Z-sorting is done. It get's everything ready for drawing.
/// </summary>
/// <param name="graphics">GDI graphics to use</param>
/// <param name="camera">Camera to use</param>
/// <param name="worldLights">Set of lights to use</param>
/// <param name="rotation">Rotation of mesh</param>
/// <param name="scale">Scale of mesh</param>
/// <param name="position">Position of mesh</param>
public void preDraw(Graphics graphics, Camera camera, WorldLights worldLights, Vector3D rotation, Vector3D scale, Vector3D position)
{
#region Generate transform matrices
Matrix4 ViewProjectionMatrix = camera.Frustum * camera.View;
Matrix4 WorldTransformMatrix = StaticMatrices.TranslationMatrix(position)
* StaticMatrices.RotationMatrixZYX(rotation) * StaticMatrices.ScaleMatrix(scale);
#endregion
#region Start with vertices in object (local) space
for (int i = 0; i < dynamicVertices.Length; i++)
{
dynamicVertices[i].setVector(staticVertices[i]);
}
#endregion
#region Transform vertices to world space (combinining the scale, rotation, and position matrices)
foreach (Vector4D vertex in dynamicVertices)
{
vertex.LeftMultiply(WorldTransformMatrix);
}
#endregion
#region Calculate lighting from world lights
/// Have yet to test whether parallel is actually faster, so leaving original code:
//foreach (FaceGDI face in faces)
// face.calculateWorldLighting(dynamicVertices, worldLights, position);
Parallel.For(0, faces.Length, i =>
{
faces[i].calculateWorldLighting(dynamicVertices, worldLights, position);
});
#endregion
#region Transform vertices to view space (combining camera view and frustum transforms)
foreach (Vector4D vertex in dynamicVertices)
{
/// Transforms vertex into camera space and applies frustum matrix
vertex.LeftMultiply(ViewProjectionMatrix);
/// Creates the illusion of perspective, shringing the x, y, and z values based on the original z value, as stored in w.
vertex.divideByW();
/// Required to compensate for GDI's upper-left-hand corner origin - could be done elsewhere - maybe doesn't need to be done for each vertex each frame - look into it.
vertex.moveOriginToCenterScreen();
}
#endregion
// Faces are now ready to draw. This last bit is for the Z-Sorting and distance read out and stuff.
#region Calculate render position and distance from camera
renderPositionGDI.zero();
renderPositionGDI.LeftMultiply(WorldTransformMatrix);
renderPositionGDI.LeftMultiply(camera.View);
distanceFromCamera = (float)renderPositionGDI.getMagnitude();
if (Settings.debug)
{
renderPositionGDI.LeftMultiply(camera.Frustum);
renderPositionGDI.divideByW();
renderPositionGDI.moveOriginToCenterScreen();
}
#endregion
}
