static public void Draw(SpriteBatch spriteBatch)
{
if (_healthBar == null || _healthUnit == null)
{
return;
}
var _player = PlayerController.Player;
if (_player == null)
{
return;
}
spriteBatch.Begin(SpriteSortMode.FrontToBack,
BlendState.AlphaBlend,
SamplerState.PointClamp,
null,
null,
null,
ManageResolution.GetTransformationMatrix());
spriteBatch.Draw(_healthBarExtender, new Vector2(16, 40 - (4 * (PlayerStats.MaxHealth - 12))), null, Color.White, 0f, Vector2.Zero, 1f, SpriteEffects.None, 0.2f);
spriteBatch.Draw(_healthBar, new Vector2(16, 40), null, Color.White, 0f, Vector2.Zero, 1f, SpriteEffects.None, .1f);
for (int i = 0; i < PlayerCurrentHealth; i++)
{
spriteBatch.Draw(_healthUnit, new Vector2(16 + (4), 49 + 40 - (4 * i)), null, Color.White, 0f, Vector2.Zero, 1f, SpriteEffects.None, 0.3f);
}
if (ManageInput.GamePaused)
{
spriteBatch.Draw(_pauseTexture, new Rectangle(0, 0, ManageResolution.VirtualWidth, ManageResolution.VirtualHeight), new Color(Color.Black, _alpha));
}
if (ManageInput.GamePaused)
{
_manageMenu.Draw(spriteBatch);
}
spriteBatch.End();
}
private static void CalculateMatrixAndRectangle()
{
//The math involved with calculated our transformMatrix and screenRect is a little intense, so instead of calling the math whenever we need these variables,
//we'll calculate them once each frame and store them... when someone needs these variables we will simply return the stored variable instead of re cauclating them every time.
//Calculate the camera transform matrix:
transformMatrix = Matrix.CreateTranslation(new Vector3(-position, 0)) * Matrix.CreateRotationZ(rotation) *
Matrix.CreateScale(new Vector3(zoom, zoom, 1)) * Matrix.CreateTranslation(new Vector3(ManageResolution.VirtualWidth
* 0.5f, ManageResolution.VirtualHeight * 0.5f, 0));
//Now combine the camera's matrix with the Resolution Manager's transform matrix to get our final working matrix:
transformMatrix = transformMatrix * ManageResolution.GetTransformationMatrix();
//Round the X and Y translation so the camera doesn't jerk as it moves:
transformMatrix.M41 = (float)Math.Round(transformMatrix.M41, 0);
transformMatrix.M42 = (float)Math.Round(transformMatrix.M42, 0);
//Calculate the rectangle that represents where our camera is at in the world:
screenRect = VisibleArea();
}