Less popping in of chunks on fog border (Thanks MrGoober), also can p…

…ress F8 to show a shadow above the block you are standing on. (Thanks MrGoober)

ClassicalSharp/Entities/LocalPlayer.cs

@@ -10,7 +10,7 @@ public partial class LocalPlayer : Player {
 
 		/// <summary> Position the player's position is set to when the 'respawn' key binding is pressed. </summary>
 		public Vector3 SpawnPoint;
-		
+
 		public float SpawnYaw, SpawnPitch;
 
 		/// <summary> The distance (in blocks) that players are allowed to
@@ -21,6 +21,8 @@ public partial class LocalPlayer : Player {
 		/// when the 'speeding' key binding is held down. </summary>
 		public float SpeedMultiplier = 10;
 
+		public bool ShowShadow = false;
+
 		public byte UserType;
 
 		/// <summary> Whether blocks that the player places that intersect themselves

ClassicalSharp/Entities/Player.Rendering.cs

@@ -13,6 +13,8 @@ partial class Player {
 		public override void Despawn() {
 			game.Graphics.DeleteTexture( ref PlayerTextureId );
 			game.Graphics.DeleteTexture( ref nameTex.ID );
+			if( shadowTex != -1 )
+				game.Graphics.DeleteTexture( ref shadowTex );
 		}
 
 		protected void InitRenderingData() {
@@ -38,11 +40,64 @@ protected void DrawName() {
 			Utils.CalcBillboardPoints( size, pos, ref game.View, out p111, out p121, out p212, out p222 );
 			api.texVerts[0] = new VertexPos3fTex2fCol4b( p111, nameTex.U1, nameTex.V2, col );
 			api.texVerts[1] = new VertexPos3fTex2fCol4b( p121, nameTex.U1, nameTex.V1, col );
-			api.texVerts[2] = new VertexPos3fTex2fCol4b( p222, nameTex.U2, nameTex.V1, col );	
+			api.texVerts[2] = new VertexPos3fTex2fCol4b( p222, nameTex.U2, nameTex.V1, col );
 			api.texVerts[3] = new VertexPos3fTex2fCol4b( p212, nameTex.U2, nameTex.V2, col );
 
 			api.SetBatchFormat( VertexFormat.Pos3fTex2fCol4b );
 			api.UpdateDynamicIndexedVb( DrawMode.Triangles, api.texVb, api.texVerts, 4, 6 );
 		}
+
+		internal void DrawShadow( bool show ) {
+			int x = Utils.Floor( Position.X ), z = Utils.Floor( Position.Z );
+			if( !show || !game.Map.IsValidPos( x, 0, z ) || Position.Y < 0 ) return;
+			CheckShadowTexture();
+			BlockInfo info = game.BlockInfo;
+			game.Graphics.BindTexture( shadowTex );
+
+			int y = Math.Min( (int)Position.Y, game.Map.Height - 1 );
+			float shadowY = 0;
+			while( y >= 0 ) {
+				byte block = game.Map.GetBlock( x, y, z );
+				if( !(info.IsAir[block] || info.IsSprite[block]) ) {
+					shadowY = y + info.MaxBB[block].Y; break;
+				}
+				y--;
+			}
+
+			if( (Position.Y - y) <= 16 ) shadowY += 1/32f;
+			else if( (Position.Y - y) <= 32 ) shadowY += 1/16f;
+			else if( (Position.Y - y) <= 96 ) shadowY += 1/8f;
+			else shadowY += 1/4f;
+			VertexPos3fTex2fCol4b[] verts = game.Graphics.texVerts;
+			int vb = game.Graphics.texVb;
+
+			FastColour col = FastColour.White;
+			verts[0] = new VertexPos3fTex2fCol4b( x, shadowY, z, 0, 0, col );
+			verts[1] = new VertexPos3fTex2fCol4b( x + 1, shadowY, z, 1, 0, col );
+			verts[2] = new VertexPos3fTex2fCol4b( x + 1, shadowY, z + 1, 1, 1, col );
+			verts[3] = new VertexPos3fTex2fCol4b( x, shadowY, z + 1, 0, 1, col );
+			game.Graphics.UpdateDynamicIndexedVb( DrawMode.Triangles, vb, verts, 4, 6 );
+		}
+
+		int shadowTex = -1;
+		unsafe void CheckShadowTexture() {
+			if( shadowTex != -1 ) return;
+			const int size = 128, half = size / 2;
+			using( Bitmap bmp = new Bitmap( size, size ) )
+				using( FastBitmap fastBmp = new FastBitmap( bmp, true, false ) )
+			{
+				int inPix = new FastColour( 0, 0, 0, 200 ).ToArgb();
+				int outPix = inPix & 0xFFFFFF;
+				for( int y = 0; y < fastBmp.Height; y++ ) {
+					int* row = fastBmp.GetRowPtr( y );
+					for( int x = 0; x < fastBmp.Width; x++ ) {
+						double dist = (half - (x + 0.5)) * (half - (x + 0.5)) + 
+							(half - (y + 0.5)) * (half - (y + 0.5));
+						row[x] = dist < half * half ? inPix : outPix;
+					}
+				}
+				shadowTex = game.Graphics.CreateTexture( fastBmp );
+			}			
+		}
 	}
 }

ClassicalSharp/Game/InputHandler.cs

@@ -347,6 +347,8 @@ bool HandleBuiltinKey( Key key ) {
 				game.SetNewScreen( new PauseScreen( game ) );
 			} else if( key == Keys[KeyBinding.OpenInventory] ) {
 				game.SetNewScreen( new BlockSelectScreen( game ) );
+			}  else if( key == Key.F8 ) {
+				game.LocalPlayer.ShowShadow = !game.LocalPlayer.ShowShadow;
 			} else {
 				return false;
 			}

ClassicalSharp/GraphicsAPI/IGraphicsApi.cs

@@ -248,8 +248,8 @@ public virtual void Dispose() {
 			DeleteDynamicVb( texVb );
 		}
 
-		VertexPos3fCol4b[] quadVerts = new VertexPos3fCol4b[4];
-		int quadVb;
+		internal VertexPos3fCol4b[] quadVerts = new VertexPos3fCol4b[4];
+		internal int quadVb;
 		public virtual void Draw2DQuad( float x, float y, float width, float height, FastColour col ) {
 			quadVerts[0] = new VertexPos3fCol4b( x, y, 0, col );
 			quadVerts[1] = new VertexPos3fCol4b( x + width, y, 0, col );

ClassicalSharp/Rendering/MapBordersRenderer.cs

@@ -54,8 +54,10 @@ public void Render( double deltaTime ) {
 			Vector3 camPos = game.CurrentCameraPos;
 			bool underWater = camPos.Y < game.Map.EdgeHeight;
 			graphics.AlphaBlending = true;
-			if( underWater )
+			if( underWater ) {
+				game.LocalPlayer.DrawShadow( game.LocalPlayer.ShowShadow );
 				game.WeatherRenderer.Render( deltaTime );
+			}
 
 			graphics.BindTexture( edgeTexId );
 			graphics.BindVb( edgesVb );			
@@ -65,8 +67,10 @@ public void Render( double deltaTime ) {
 			if( game.Map.EdgeBlock != Block.Air && camPos.Y >= yVisible )
 				graphics.DrawIndexedVb_TrisT2fC4b( edgesVertices * 6 / 4, 0 );
 
-			if( !underWater )
+			if( !underWater ) {
+				game.LocalPlayer.DrawShadow( game.LocalPlayer.ShowShadow );
 				game.WeatherRenderer.Render( deltaTime );
+			}
 			graphics.AlphaBlending = false;
 			graphics.Texturing = false;
 			graphics.AlphaTest = false;

ClassicalSharp/Rendering/MapRenderer.cs

@@ -256,7 +256,7 @@ public void Render( double deltaTime ) {
 		const double targetTime = (1.0 / 30) + 0.01;
 		void UpdateChunks( double deltaTime ) {
 			int chunkUpdates = 0;
-			int viewDist = game.ViewDistance < 16 ? 16 : game.ViewDistance;
+			int viewDist = Utils.AdjViewDist( game.ViewDistance < 16 ? 16 : game.ViewDistance );
 			int adjViewDistSqr = (viewDist + 24) * (viewDist + 24);
 			chunksTarget += deltaTime < targetTime ? 1 : -1; // build more chunks if 30 FPS or over, otherwise slowdown.
 			Utils.Clamp( ref chunksTarget, 4, 12 );

ClassicalSharp/Rendering/WeatherRenderer.cs

@@ -29,7 +29,7 @@ public WeatherRenderer( Game game ) {
 		public void Render( double deltaTime ) {
 			Weather weather = map.Weather;
 			if( weather == Weather.Sunny ) return;
-			if( heightmap == null ) InitHeightmap();
+			if( heightmap == null ) InitHeightmap();			
 
 			graphics.BindTexture( weather == Weather.Rainy ? game.RainTexId : game.SnowTexId );
 			Vector3 camPos = game.CurrentCameraPos;