public void DrawBackground(SpriteBatch spriteBatch, Camera cam,
BackgroundSpriteManager backgroundSpriteManager = null,
BackgroundCreatureManager backgroundCreatureManager = null)
{
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend, SamplerState.LinearWrap);
Vector2 backgroundPos = cam.WorldViewCenter;
backgroundPos.Y = -backgroundPos.Y;
backgroundPos *= 0.05f;
if (backgroundPos.Y < 1024)
{
if (backgroundPos.Y < 0)
{
backgroundTop.SourceRect = new Rectangle((int)backgroundPos.X, (int)backgroundPos.Y, 1024, (int)Math.Min(-backgroundPos.Y, 1024));
backgroundTop.DrawTiled(spriteBatch, Vector2.Zero, new Vector2(GameMain.GraphicsWidth, Math.Min(-backgroundPos.Y, GameMain.GraphicsHeight)),
Vector2.Zero, level.BackgroundColor);
}
if (backgroundPos.Y > -1024)
{
background.SourceRect = new Rectangle((int)backgroundPos.X, (int)Math.Max(backgroundPos.Y, 0), 1024, 1024);
background.DrawTiled(spriteBatch,
(backgroundPos.Y < 0) ? new Vector2(0.0f, (int)-backgroundPos.Y) : Vector2.Zero,
new Vector2(GameMain.GraphicsWidth, (int)Math.Ceiling(1024 - backgroundPos.Y)),
Vector2.Zero, level.BackgroundColor);
}
}
spriteBatch.End();
spriteBatch.Begin(SpriteSortMode.Deferred,
BlendState.AlphaBlend,
SamplerState.LinearWrap, DepthStencilState.Default, null, null,
cam.Transform);
if (backgroundSpriteManager != null)
{
backgroundSpriteManager.DrawSprites(spriteBatch, cam);
}
if (backgroundCreatureManager != null)
{
backgroundCreatureManager.Draw(spriteBatch);
}
Rectangle srcRect = new Rectangle(0, 0, 2048, 2048);
Vector2 origin = new Vector2(cam.WorldView.X, -cam.WorldView.Y);
Vector2 offset = -origin + dustOffset;
while (offset.X <= -srcRect.Width)
{
offset.X += srcRect.Width;
}
while (offset.X > 0.0f)
{
offset.X -= srcRect.Width;
}
while (offset.Y <= -srcRect.Height)
{
offset.Y += srcRect.Height;
}
while (offset.Y > 0.0f)
{
offset.Y -= srcRect.Height;
}
for (int i = 0; i < 4; i++)
{
float scale = 1.0f - i * 0.2f;
float recipScale = 1.0f / scale;
//alpha goes from 1.0 to 0.0 when scale is in the range of 0.5-0.25
float alpha = (cam.Zoom * scale) < 0.5f ? (cam.Zoom * scale - 0.25f) * 40.0f : 1.0f;
if (alpha <= 0.0f)
{
continue;
}
Vector2 offsetS = offset * scale + new Vector2(cam.WorldView.Width, cam.WorldView.Height) * (1.0f - scale) * 0.5f - new Vector2(256.0f * i);
while (offsetS.X <= -srcRect.Width * scale)
{
offsetS.X += srcRect.Width * scale;
}
while (offsetS.X > 0.0f)
{
offsetS.X -= srcRect.Width * scale;
}
while (offsetS.Y <= -srcRect.Height * scale)
{
offsetS.Y += srcRect.Height * scale;
}
while (offsetS.Y > 0.0f)
{
offsetS.Y -= srcRect.Height * scale;
}
dustParticles.DrawTiled(spriteBatch, origin + offsetS, new Vector2(cam.WorldView.Width - offsetS.X, cam.WorldView.Height - offsetS.Y), Vector2.Zero, srcRect, Color.White * alpha, new Vector2(scale));
}
spriteBatch.End();
RenderWalls(GameMain.Instance.GraphicsDevice, cam);
}
public void DrawBackground(SpriteBatch spriteBatch, Camera cam, BackgroundCreatureManager backgroundCreatureManager = null)
{
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend, SamplerState.LinearWrap);
Vector2 backgroundPos = cam.WorldViewCenter;
backgroundPos.Y = -backgroundPos.Y;
backgroundPos /= 20.0f;
if (backgroundPos.Y < 1024)
{
if (backgroundPos.Y < 0)
{
backgroundTop.SourceRect = new Rectangle((int)backgroundPos.X, (int)backgroundPos.Y, 1024, (int)Math.Min(-backgroundPos.Y, 1024));
backgroundTop.DrawTiled(spriteBatch, Vector2.Zero, new Vector2(GameMain.GraphicsWidth, Math.Min(-backgroundPos.Y, GameMain.GraphicsHeight)),
Vector2.Zero, level.BackgroundColor);
}
if (backgroundPos.Y > -1024)
{
background.SourceRect = new Rectangle((int)backgroundPos.X, (int)Math.Max(backgroundPos.Y, 0), 1024, 1024);
background.DrawTiled(spriteBatch,
(backgroundPos.Y < 0) ? new Vector2(0.0f, (int)-backgroundPos.Y) : Vector2.Zero,
new Vector2(GameMain.GraphicsWidth, (int)Math.Ceiling(1024 - backgroundPos.Y)),
Vector2.Zero, level.BackgroundColor);
}
}
spriteBatch.End();
spriteBatch.Begin(SpriteSortMode.BackToFront,
BlendState.AlphaBlend,
SamplerState.LinearWrap, DepthStencilState.Default, null, null,
cam.Transform);
backgroundSpriteManager.DrawSprites(spriteBatch, cam);
if (backgroundCreatureManager != null)
{
backgroundCreatureManager.Draw(spriteBatch);
}
for (int i = 0; i < 4; i++)
{
float scale = 1.0f - i * 0.2f;
//alpha goes from 1.0 to 0.0 when scale is in the range of 0.2-0.1
float alpha = (cam.Zoom * scale) < 0.2f ? (cam.Zoom * scale - 0.1f) * 10.0f : 1.0f;
if (alpha <= 0.0f)
{
continue;
}
Vector2 offset = (new Vector2(cam.WorldViewCenter.X, cam.WorldViewCenter.Y) + dustOffset) * scale;
Vector3 origin = new Vector3(cam.WorldView.Width, cam.WorldView.Height, 0.0f) * 0.5f;
dustParticles.SourceRect = new Rectangle(
(int)((offset.X - origin.X + (i * 256)) / scale),
(int)((-offset.Y - origin.Y + (i * 256)) / scale),
(int)((cam.WorldView.Width) / scale),
(int)((cam.WorldView.Height) / scale));
spriteBatch.Draw(dustParticles.Texture,
new Vector2(cam.WorldViewCenter.X, -cam.WorldViewCenter.Y),
dustParticles.SourceRect, Color.White * alpha, 0.0f,
new Vector2(cam.WorldView.Width, cam.WorldView.Height) * 0.5f / scale, scale, SpriteEffects.None, 1.0f - scale);
}
spriteBatch.End();
RenderWalls(GameMain.Instance.GraphicsDevice, cam);
}
