public ViewPortInfo DrawWorldViewPort(SpriteBatch spriteBatch, Vector2 center, float zoom, Rectangle destRectangle, Color color, SamplerState samplerState, SpriteFont spriteFont = null)
{
ViewPortInfo viewPortInfo = new ViewPortInfo();
{
viewPortInfo.pxTileWidth = (int)Math.Ceiling(Map.TileWidth * zoom);
viewPortInfo.pxTileHeight = (int)Math.Ceiling(Map.TileHeight * zoom);
// Note about ActualZoom Property:
// because there is a loss of data between to conversion from Map.pxTileWidth * Zoom -> (int)
// we need to determine what was the actual level of zoom that was applied to the tiles and use that
// this ensures that entities that will be drawn will be placed correctly on the screen.
viewPortInfo.ActualZoom = viewPortInfo.pxTileWidth / Map.TileWidth;
viewPortInfo.pxWidth = destRectangle.Width / viewPortInfo.ActualZoom;
viewPortInfo.pxHeight = destRectangle.Height / viewPortInfo.ActualZoom;
viewPortInfo.pxTopLeftX = center.X - viewPortInfo.pxWidth / 2.0f;
viewPortInfo.pxTopLeftY = center.Y - viewPortInfo.pxHeight / 2.0f;
viewPortInfo.TileCountX = (int)Math.Ceiling((double)viewPortInfo.pxWidth / Map.TileWidth) + 1;
viewPortInfo.TileCountY = (int)Math.Ceiling((double)viewPortInfo.pxHeight / Map.TileHeight) + 1;
// Prevent the View from going outisde of the WORLD coordinates.
if (viewPortInfo.pxTopLeftX < 0)
{
viewPortInfo.pxTopLeftX = 0;
}
if (viewPortInfo.pxTopLeftY < 0)
{
viewPortInfo.pxTopLeftY = 0;
}
if (viewPortInfo.pxTopLeftX + viewPortInfo.pxWidth >= Map.pxWidth)
{
viewPortInfo.pxTopLeftX = Map.pxWidth - viewPortInfo.pxWidth;
}
if (viewPortInfo.pxTopLeftY + viewPortInfo.pxHeight >= Map.pxHeight)
{
viewPortInfo.pxTopLeftY = Map.pxHeight - viewPortInfo.pxHeight;
}
// Calculate any decimal displacement required (For Positions with decimal points).
viewPortInfo.pxDispX = viewPortInfo.pxTopLeftX - ((int)viewPortInfo.pxTopLeftX / Map.TileWidth) * Map.TileWidth;
viewPortInfo.pxDispY = viewPortInfo.pxTopLeftY - ((int)viewPortInfo.pxTopLeftY / Map.TileHeight) * Map.TileHeight;
viewPortInfo.pxViewPortBounds = new Rectangle(
(int)Math.Ceiling(viewPortInfo.pxTopLeftX),
(int)Math.Ceiling(viewPortInfo.pxTopLeftY),
(int)Math.Ceiling(viewPortInfo.pxWidth),
(int)Math.Ceiling(viewPortInfo.pxHeight)
);
}
// RENDER THE GAME WORLD TO THE VIEWPORT RENDER TARGET
GraphicsDevice.SetRenderTarget(_inputBuffer);
GraphicsDevice.Clear(Map.Background);
// DRAW THE WORLD MAP
OverallPerformance.StartTiming("TileRenderingTime");
// Deferred Rendering should be fine for rendering tile as long as we draw tile layers one at a time
spriteBatch.Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend, samplerState, null, null);
{
for (int layerIndex = 0; layerIndex < Map.TileLayers.Count; layerIndex++)
{
// DRAW EACH LAYER
TileLayer tileLayer = Map.TileLayers[layerIndex];
if (tileLayer.Visible)
{
Color layerColor = new Color()
{
R = tileLayer.Color.R,
G = tileLayer.Color.G,
B = tileLayer.Color.B,
A = (byte)(tileLayer.Color.A * tileLayer.Opacity)
};
float depth = 1 - (layerIndex / 10000.0f);
for (int i = 0; i < viewPortInfo.TileCountX; i++)
{
for (int j = 0; j < viewPortInfo.TileCountY; j++)
{
int tileX = (int)(i + viewPortInfo.pxTopLeftX / Map.TileWidth);
int tileY = (int)(j + viewPortInfo.pxTopLeftY / Map.TileHeight);
int tileGid = tileLayer[tileX, tileY];
Rectangle pxTileDestRect = new Rectangle(
(int)Math.Ceiling(i * viewPortInfo.pxTileWidth - viewPortInfo.pxDispX * viewPortInfo.ActualZoom),
(int)Math.Ceiling(j * viewPortInfo.pxTileHeight - viewPortInfo.pxDispY * viewPortInfo.ActualZoom),
(int)viewPortInfo.pxTileWidth,
(int)viewPortInfo.pxTileHeight
);
if (tileGid != 0 && tileGid != -1) // NULL or INVALID Tile Gid is ignored
{
Tile tile = Map.Tiles[tileGid];
spriteBatch.Draw(
tile.sourceTexture,
pxTileDestRect,
tile.SourceRectangle,
layerColor,
0, Vector2.Zero,
SpriteEffects.None,
depth
);
}
// DRAW THE TILE LAYER GRID IF ENABLE
if (DrawingOptions.ShowTileGrid && layerIndex == Map.TileLayers.Count - 1)
{
spriteBatch.DrawRectangle(pxTileDestRect, Color.Black, 0);
}
}
}
}
}
}
spriteBatch.End();
OverallPerformance.StopTiming("TileRenderingTime");
// Calculate the entity Displacement caused by pxTopLeft at a global scale to prevent jittering.
// Each entity should be displaced by the *same amount* based on the pxTopLeftX/Y values
// this is to prevent entities 'jittering on the screen' when moving the camera.
float globalDispX = (int)Math.Ceiling(viewPortInfo.pxTopLeftX * viewPortInfo.ActualZoom);
float globalDispY = (int)Math.Ceiling(viewPortInfo.pxTopLeftY * viewPortInfo.ActualZoom);
// DRAW VISIBLE REGISTERED ENTITIES
OverallPerformance.RestartTiming("TotalEntityRenderTime");
spriteBatch.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend, samplerState, null, null);
{
EntitiesOnScreen = Collider.GetIntersectingEntites(new FRectangle(viewPortInfo.pxViewPortBounds));
// DRAW EACH ENTITIY THAT IS WITHIN THE SCREENS VIEWPORT
foreach (Entity entity in EntitiesOnScreen)
{
EntityRenderPerformance.RestartTiming(entity.Name);
if (!entity.Visible)
{
continue;
}
entity.IsOnScreen = true;
// Determine the absolute position on the screen for entity position and the bounding box.
Vector2 pxAbsEntityPos = new Vector2(
entity.Pos.X * viewPortInfo.ActualZoom - globalDispX,
entity.Pos.Y * viewPortInfo.ActualZoom - globalDispY
);
FRectangle pxAbsBoundingBox = new FRectangle(
entity.CurrentBoundingBox.X * viewPortInfo.ActualZoom - globalDispX,
entity.CurrentBoundingBox.Y * viewPortInfo.ActualZoom - globalDispY,
entity.CurrentBoundingBox.Width * viewPortInfo.ActualZoom,
entity.CurrentBoundingBox.Height * viewPortInfo.ActualZoom
);
// DRAW ENTITY BOUNDING BOXES IF ENABLED
if (DrawingOptions.ShowBoundingBoxes)
{
spriteBatch.DrawRectangle(pxAbsBoundingBox.ToRectangle(), Color.Red, 0.0001f);
SpriteBatchExtensions.DrawCross(
spriteBatch,
new Vector2(
(int)Math.Ceiling(pxAbsEntityPos.X),
(int)Math.Ceiling(pxAbsEntityPos.Y)
),
13, Color.Black, 0f);
}
// DRAW ENTITY DETAILS IF ENABLED (ENTITY DEBUG INFO)
if (DrawingOptions.ShowEntityDebugInfo)
{
SpriteBatchExtensions.DrawMultiLineString(
spriteBatch,
spriteFont,
entity.GetDebugInfo(),
(int)entity.CurrentBoundingBox.Width * 2,
4,
new Vector2(
pxAbsBoundingBox.X + pxAbsBoundingBox.Width / 2,
pxAbsBoundingBox.Y + pxAbsBoundingBox.Height / 2
),
Color.Purple);
}
// DRAW EVERY GAMEDRAWABLE INSTANCE CURRENTLY ACTIVE IN THE ENTITIES DRAWABLE SET.
HashSet <GameDrawableInstance> drawableInstances = entity.Drawables.GetByState(entity.CurrentDrawableState);
if (drawableInstances != null)
{
foreach (GameDrawableInstance drawable in drawableInstances)
{
if (!drawable.Visible)
{
continue;
}
// The relative position of the object should always be (X,Y) - (globalDispX, globalDispY). globalDispX and globalDispY
// are based on viewPortInfo.TopLeftX and viewPortInfo.TopLeftY. viewPortInfo.TopLeftX and viewPortInfo.TopLeftY have
// already been corrected in terms of the bounds of the WORLD map coordinates. This allows for panning at the edges.
Rectangle pxCurrentFrame = drawable.GetSourceRectangle(LastUpdateTime);
int pxObjectWidth = (int)Math.Ceiling(pxCurrentFrame.Width * entity.ScaleX * viewPortInfo.ActualZoom);
int pxObjectHeight = (int)Math.Ceiling(pxCurrentFrame.Height * entity.ScaleY * viewPortInfo.ActualZoom);
// Draw the Object based on the current Frame dimensions and the specified Object Width Height values.
Rectangle objectDestRect = new Rectangle(
(int)Math.Ceiling(pxAbsEntityPos.X) + (int)Math.Ceiling(drawable.Offset.X * viewPortInfo.ActualZoom),
(int)Math.Ceiling(pxAbsEntityPos.Y) + (int)Math.Ceiling(drawable.Offset.Y * viewPortInfo.ActualZoom),
pxObjectWidth,
pxObjectHeight
);
Vector2 drawableOrigin = new Vector2(
(float)Math.Ceiling(drawable.Drawable.Origin.X * pxCurrentFrame.Width),
(float)Math.Ceiling(drawable.Drawable.Origin.Y * pxCurrentFrame.Height)
);
Color drawableColor = new Color()
{
R = drawable.Color.R,
G = drawable.Color.G,
B = drawable.Color.B,
A = (byte)(drawable.Color.A * entity.Opacity)
};
// Layer depth should depend how far down the object is on the map (Relative to Y).
// Important to also take into account the animation layers for the entity.
float layerDepth = Math.Min(0.99f, 1 / (entity.Pos.Y + ((float)drawable.Layer / Map.pxHeight)));
// FINALLY ... DRAW
spriteBatch.Draw(
drawable.GetSourceTexture(LastUpdateTime),
objectDestRect,
pxCurrentFrame,
drawableColor,
drawable.Rotation,
drawableOrigin,
drawable.SpriteEffects,
layerDepth);
// DRAW BOUNDING BOXES OF EACH INDIVIDUAL DRAWABLE COMPONENT
if (DrawingOptions.ShowDrawableComponents)
{
Rectangle drawableComponentRect = new Rectangle(
(int)Math.Floor(objectDestRect.X - objectDestRect.Width * drawable.Drawable.Origin.X),
(int)Math.Floor(objectDestRect.Y - objectDestRect.Height * drawable.Drawable.Origin.Y),
objectDestRect.Width, objectDestRect.Height);
SpriteBatchExtensions.DrawRectangle(
spriteBatch, drawableComponentRect, Color.Blue, 0);
}
}
}
EntityRenderPerformance.StopTiming(entity.Name);
}
}
spriteBatch.End();
OverallPerformance.StopTiming("TotalEntityRenderTime");
// APPLY GAME SHADERS TO THE RESULTANT IMAGE
OverallPerformance.RestartTiming("TotalPostGameShaderRenderTime");
foreach (PostGameShader postGameShader in GameShaders)
{
if (postGameShader.Enabled)
{
postGameShader.ApplyShader(spriteBatch, viewPortInfo, LastUpdateTime, _inputBuffer, _outputBuffer);
// Swap buffers after each render.
_dummyBuffer = _inputBuffer;
_inputBuffer = _outputBuffer;
_outputBuffer = _dummyBuffer;
}
}
OverallPerformance.StopTiming("TotalPostGameShaderRenderTime");
// DRAW COLLIDER DEBUG INFORMATION IF ENABLED
if (DrawingOptions.ShowColliderDebugInfo)
{
spriteBatch.Begin();
Collider.DrawDebugInfo(viewPortInfo, spriteBatch, destRectangle, spriteFont, globalDispX, globalDispY);
spriteBatch.End();
}
// DRAW THE VIEWPORT TO THE STANDARD SCREEN
GraphicsDevice.SetRenderTarget(null);
spriteBatch.Begin();
{
spriteBatch.Draw(_inputBuffer, destRectangle, color);
}
spriteBatch.End();
return(viewPortInfo);
}
public List <Entity> GetIntersectingEntities(FRectangle region)
{
return(Collider.GetIntersectingEntites(region));
}