Added drawing of path context

src/drawPath.cpp

@@ -175,8 +175,35 @@ void drawDroidPath(DROID *psDroid, const glm::mat4& viewMatrix, const glm::mat4
 	drawSquare(perspectiveViewMatrix, 32, psDroid->sMove.target.x, psDroid->sMove.target.y, height, WZCOL_GREEN);
 }
 
+/// Draws path tree from the context.
+void drawContext(const PathfindContext& context, const glm::mat4 &mvp)
+{
+	const int terrainOffset = 5;
+	const int contextIteration = context.iteration;
+	std::vector<Vector3i> pts;
+	for (int y = 0; y < context.height; y++)
+	{
+		for (int x = 0; x < context.width; x++)
+		{
+			const PathExploredTile& tile = context.tile(PathCoord(x, y));
+			if (tile.iteration != contextIteration)
+				continue;
+			auto heightStart = map_TileHeight(x, y) + terrainOffset;
+			Vector3i start(world_coord(x), heightStart, -world_coord(y));
+			pts.push_back(start);
+			auto heightEnd = map_TileHeight(x - tile.dx/64, y - tile.dy/64) + terrainOffset;
+			Vector3i end(world_coord(x) - tile.dx , heightEnd, -world_coord(y) + tile.dy);
+			pts.push_back(end);
+		}
+	}
+	if (!pts.empty())
+		drawLines(mvp, pts, WZCOL_LGREEN);
+}
+
 static bool _drawImpassableTiles = true;
 
+extern std::list<PathfindContext> fpathContexts;
+
 void drawPathCostLayer(int player, const iView& playerViewPos, const glm::mat4& viewMatrix, const glm::mat4 &perspectiveViewMatrix)
 {
 	if (player >= MAX_PLAYERS)
@@ -198,6 +225,10 @@ void drawPathCostLayer(int player, const iView& playerViewPos, const glm::mat4&
 			drawDroidPath(psDroid, viewMatrix, perspectiveViewMatrix);
 		}
 	}
+
+	if (!fpathContexts.empty()) {
+		drawContext(fpathContexts.back(), perspectiveViewMatrix);
+	}
 	/*
 	if (isFlowfieldEnabled() && lastSelected)  debugDrawFlowfield(lastSelected, mvp);
 	*/

src/fpath.cpp

@@ -72,7 +72,7 @@ static uint32_t         waitingForResultId;
 static WZ_SEMAPHORE     *waitingForResultSemaphore = nullptr;
 
 /// Last recently used list of contexts.
-static std::list<PathfindContext> fpathContexts;
+std::list<PathfindContext> fpathContexts;
 
 static PATHRESULT fpathExecute(PATHJOB psJob);