Added settlement drawing

Author: Databean

src/GameBoard.cpp

@@ -422,10 +422,12 @@ void GameBoard::PlaceCity(Coordinate location, Player& Owner){
 
 void GameBoard::accept(GameVisitor& visitor) {
 	visitor.visit(*this);
-	for(auto& it : corners) {
+	// Drawing needs this to happen in this order. Visitors technically should be order-independent, but this was an easy fix at the moment.
+	// Keep that in mind when modifying this.
+	for(auto& it : resources) {
 		it.second->accept(visitor);
 	}
-	for(auto& it : resources) {
+	for(auto& it : corners) {
 		it.second->accept(visitor);
 	}
 	for(auto& roadCoordVec : roads) {

src/GameView.cpp

@@ -83,7 +83,18 @@ void DrawingGameVisitor::visit(Road& road) {
 }
 
 void DrawingGameVisitor::visit(Settlement& settlement) {
+	static const auto settlementRadius = 0.03;
 
+	auto centerScreenPos = coordToScreen(settlement.getLocation());
+	
+	glBindTexture(GL_TEXTURE_2D, 0);
+	glColor3d(0., 0., 0.);
+	glBegin(GL_QUADS);
+	glVertex2d(centerScreenPos.first, centerScreenPos.second + settlementRadius);
+	glVertex2d(centerScreenPos.first + settlementRadius, centerScreenPos.second);
+	glVertex2d(centerScreenPos.first, centerScreenPos.second - settlementRadius);
+	glVertex2d(centerScreenPos.first - settlementRadius, centerScreenPos.second);
+	glEnd();
 }
 
 void DrawingGameVisitor::visit(City& city) {