- added Screen.DrawThickLine for drawing lines with thickness

src/v_2ddrawer.cpp

@@ -594,6 +594,46 @@ void F2DDrawer::AddLine(int x1, int y1, int x2, int y2, int palcolor, uint32_t c
 //
 //==========================================================================
 
+void F2DDrawer::AddThickLine(int x1, int y1, int x2, int y2, double thickness, uint32_t color)
+{
+	PalEntry p = (PalEntry)color;
+
+	DVector2 point0(x1, y1);
+	DVector2 point1(x2, y2);
+
+	DVector2 delta = point1 - point0;
+	DVector2 perp(-delta.Y, delta.X);
+	perp.MakeUnit();
+	perp *= thickness / 2;
+
+	DVector2 corner0 = point0 + perp;
+	DVector2 corner1 = point0 - perp;
+	DVector2 corner2 = point1 + perp;
+	DVector2 corner3 = point1 - perp;
+
+	RenderCommand dg;
+
+	dg.mType = DrawTypeTriangles;
+	dg.mVertCount = 4;
+	dg.mVertIndex = (int)mVertices.Reserve(4);
+	dg.mRenderStyle = LegacyRenderStyles[STYLE_Translucent];
+	auto ptr = &mVertices[dg.mVertIndex];
+	ptr->Set(corner0.X, corner0.Y, 0, 0, 0, p); ptr++;
+	ptr->Set(corner1.X, corner1.Y, 0, 0, 0, p); ptr++;
+	ptr->Set(corner2.X, corner2.Y, 0, 0, 0, p); ptr++;
+	ptr->Set(corner3.X, corner3.Y, 0, 0, 0, p); ptr++;
+	dg.mIndexIndex = mIndices.Size();
+	dg.mIndexCount += 6;
+	AddIndices(dg.mVertIndex, 6, 0, 1, 2, 1, 3, 2);
+	AddCommand(&dg);
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
 void F2DDrawer::AddPixel(int x1, int y1, int palcolor, uint32_t color)
 {
 	PalEntry p = color ? (PalEntry)color : GPalette.BaseColors[palcolor];

src/v_2ddrawer.h

@@ -149,6 +149,7 @@ public:
 	
 		
 	void AddLine(int x1, int y1, int x2, int y2, int palcolor, uint32_t color);
+	void AddThickLine(int x1, int y1, int x2, int y2, double thickness, uint32_t color);
 	void AddPixel(int x1, int y1, int palcolor, uint32_t color);
 
 	void Clear();

src/v_draw.cpp

@@ -1088,6 +1088,24 @@ DEFINE_ACTION_FUNCTION(_Screen, DrawLine)
 	return 0;
 }
 
+void DFrameBuffer::DrawThickLine(int x0, int y0, int x1, int y1, double thickness, uint32_t realcolor) {
+	m2DDrawer.AddThickLine(x0, y0, x1, y1, thickness, realcolor);
+}
+
+DEFINE_ACTION_FUNCTION(_Screen, DrawThickLine)
+{
+	PARAM_PROLOGUE;
+	PARAM_INT(x0);
+	PARAM_INT(y0);
+	PARAM_INT(x1);
+	PARAM_INT(y1);
+	PARAM_FLOAT(thickness);
+	PARAM_INT(color);
+	if (!screen->HasBegun2D()) ThrowAbortException(X_OTHER, "Attempt to draw to screen outside a draw function");
+	screen->DrawThickLine(x0, y0, x1, y1, thickness, color);
+	return 0;
+}
+
 //==========================================================================
 //
 // Draw a single pixel

src/v_video.h

@@ -498,6 +498,9 @@ public:
 	// Draws a line
 	void DrawLine(int x0, int y0, int x1, int y1, int palColor, uint32_t realcolor);
 
+	// Draws a line with thickness
+	void DrawThickLine(int x0, int y0, int x1, int y1, double thickness, uint32_t realcolor);
+
 	// Draws a single pixel
 	void DrawPixel(int x, int y, int palcolor, uint32_t rgbcolor);
 

wadsrc/static/zscript/base.txt

@@ -194,6 +194,7 @@ struct Screen native
 	native static vararg void DrawChar(Font font, int normalcolor, double x, double y, int character, ...);
 	native static vararg void DrawText(Font font, int normalcolor, double x, double y, String text, ...);
 	native static void DrawLine(int x0, int y0, int x1, int y1, Color color);
+	native static void DrawThickLine(int x0, int y0, int x1, int y1, double thickness, Color color);
 	native static void DrawFrame(int x, int y, int w, int h);
 	native static Vector2, Vector2 VirtualToRealCoords(Vector2 pos, Vector2 size, Vector2 vsize, bool vbottom=false, bool handleaspect=true);
 	native static double GetAspectRatio();