make use of board object

demo/demo/hexboard/board.cpp

@@ -52,9 +52,9 @@ namespace demo::hexboard {
 
 	void Scene::render(fggl::gfx::Graphics &gfx) {
 		// if the board is not set, abort
-		/*if ( m_board == nullptr ){
+		if ( m_board == nullptr ){
 			return;
-		}*/
+		}
 
 		// draw the grid
 		// FIXME don't hard-code the screen size
@@ -72,12 +72,15 @@ namespace demo::hexboard {
 		auto rowBasis = hexPos;
 		for(auto i=0; i<gridHeight; ++i) {
 			for (auto j=0; j<gridWidth; ++j) {
-				auto pos = hexToScreen(hexPos, hexRadius, offset);
 
-				auto hex = fggl::gfx::make_shape(pos, hexRadius, 6);
-				paint.stroke(hex);
-				pos.x += hexRadius;
-				hexPos = hexPos.neighbour( fggl::grid::HexDirPointy::RIGHT );
+				if ( m_board->isValidPos(hexPos) ) {
+					auto pos = hexToScreen(hexPos, hexRadius, offset);
+					auto hexShape = fggl::gfx::make_shape(pos, hexRadius, 6);
+					paint.stroke(hexShape);
+				}
+
+				// next hexagon
+				hexPos = hexPos.neighbour(fggl::grid::HexDirPointy::RIGHT);
 			}
 
 			rowBasis = i % 2 == 0 ? rowBasis.neighbour(fggl::grid::HexDirPointy::BOTTOM_RIGHT) : rowBasis.neighbour(fggl::grid::HexDirPointy::BOTTOM_LEFT);

include/fggl/grid/hexgrid.hpp

@@ -24,7 +24,10 @@
 namespace fggl::grid {
 
 	class HexGrid {
-
+		public:
+			inline bool isValidPos(const IntHex& pos) {
+				return true;
+			}
 	};
 
 } // namespace fggl::grid