public void DrawLightning(Camera camera)
{
if (!m_lightningStrikePosition.HasValue)
{
return;
}
FlatBatch3D flatBatch3D = m_primitivesRenderer3d.FlatBatch(0, DepthStencilState.DepthRead, null, BlendState.Additive);
Vector3 value = m_lightningStrikePosition.Value;
Vector3 unitY = Vector3.UnitY;
Vector3 v = Vector3.Normalize(Vector3.Cross(camera.ViewDirection, unitY));
Viewport viewport = Display.Viewport;
float num = Vector4.Transform(new Vector4(value, 1f), camera.ViewProjectionMatrix).W * 2f / ((float)viewport.Width * camera.ProjectionMatrix.M11);
for (int i = 0; i < (int)(m_lightningStrikeBrightness * 30f); i++)
{
float s = m_random.NormalFloat(0f, 1f * num);
float s2 = m_random.NormalFloat(0f, 1f * num);
Vector3 v2 = s * v + s2 * unitY;
float num2 = 260f;
while (num2 > value.Y)
{
uint num3 = MathUtils.Hash((uint)(m_lightningStrikePosition.Value.X + 100f * m_lightningStrikePosition.Value.Z + 200f * num2));
float num4 = MathUtils.Lerp(4f, 10f, (float)(double)(num3 & 0xFF) / 255f);
float s3 = ((num3 & 1) == 0) ? 1 : (-1);
float s4 = MathUtils.Lerp(0.05f, 0.2f, (float)(double)((num3 >> 8) & 0xFF) / 255f);
float num5 = num2;
float num6 = num5 - num4 * MathUtils.Lerp(0.45f, 0.55f, (float)(double)((num3 >> 16) & 0xFF) / 255f);
float num7 = num5 - num4 * MathUtils.Lerp(0.45f, 0.55f, (float)(double)((num3 >> 24) & 0xFF) / 255f);
float num8 = num5 - num4;
Vector3 p = new Vector3(value.X, num5, value.Z) + v2;
Vector3 vector = new Vector3(value.X, num6, value.Z) + v2 - num4 * v * s3 * s4;
Vector3 vector2 = new Vector3(value.X, num7, value.Z) + v2 + num4 * v * s3 * s4;
Vector3 p2 = new Vector3(value.X, num8, value.Z) + v2;
Color color = Color.White * 0.2f * MathUtils.Saturate((260f - num5) * 0.2f);
Color color2 = Color.White * 0.2f * MathUtils.Saturate((260f - num6) * 0.2f);
Color color3 = Color.White * 0.2f * MathUtils.Saturate((260f - num7) * 0.2f);
Color color4 = Color.White * 0.2f * MathUtils.Saturate((260f - num8) * 0.2f);
flatBatch3D.QueueLine(p, vector, color, color2);
flatBatch3D.QueueLine(vector, vector2, color2, color3);
flatBatch3D.QueueLine(vector2, p2, color3, color4);
num2 -= num4;
}
}
float num9 = MathUtils.Lerp(0.3f, 0.75f, 0.5f * (float)MathUtils.Sin(MathUtils.Remainder(1.0 * m_subsystemTime.GameTime, 6.2831854820251465)) + 0.5f);
m_lightningStrikeBrightness -= m_subsystemTime.GameTimeDelta / num9;
if (m_lightningStrikeBrightness <= 0f)
{
m_lightningStrikePosition = null;
m_lightningStrikeBrightness = 0f;
}
}
public void FillStarsBuffers()
{
Random random = new Random(7);
StarVertex[] array = new StarVertex[600];
for (int i = 0; i < 150; i++)
{
Vector3 v;
do
{
v = new Vector3(random.Float(-1f, 1f), random.Float(-1f, 1f), random.Float(-1f, 1f));
}while (v.LengthSquared() > 1f);
v = Vector3.Normalize(v);
float s = 9f * random.NormalFloat(1f, 0.1f);
float w = MathUtils.Saturate(random.NormalFloat(0.6f, 0.4f));
Color color = new Color(new Vector4(random.Float(0.6f, 1f), 0.7f, random.Float(0.8f, 1f), w));
Vector3 v2 = 900f * v;
Vector3 vector = Vector3.Normalize(Vector3.Cross((v.X > v.Y) ? Vector3.UnitY : Vector3.UnitX, v));
Vector3 v3 = Vector3.Normalize(Vector3.Cross(vector, v));
Vector3 position = v2 + s * (-vector - v3);
Vector3 position2 = v2 + s * (vector - v3);
Vector3 position3 = v2 + s * (vector + v3);
Vector3 position4 = v2 + s * (-vector + v3);
StarVertex starVertex = array[i * 4] = new StarVertex
{
Position = position,
TextureCoordinate = new Vector2(0f, 0f),
Color = color
};
starVertex = (array[i * 4 + 1] = new StarVertex
{
Position = position2,
TextureCoordinate = new Vector2(1f, 0f),
Color = color
});
starVertex = (array[i * 4 + 2] = new StarVertex
{
Position = position3,
TextureCoordinate = new Vector2(1f, 1f),
Color = color
});
starVertex = (array[i * 4 + 3] = new StarVertex
{
Position = position4,
TextureCoordinate = new Vector2(0f, 1f),
Color = color
});
}
m_starsVertexBuffer.SetData(array, 0, array.Length);
ushort[] array2 = new ushort[900];
for (int j = 0; j < 150; j++)
{
array2[j * 6] = (ushort)(j * 4);
array2[j * 6 + 1] = (ushort)(j * 4 + 1);
array2[j * 6 + 2] = (ushort)(j * 4 + 2);
array2[j * 6 + 3] = (ushort)(j * 4 + 2);
array2[j * 6 + 4] = (ushort)(j * 4 + 3);
array2[j * 6 + 5] = (ushort)(j * 4);
}
m_starsIndexBuffer.SetData(array2, 0, array2.Length);
}
