3 files changed, 60 insertions, 1 deletions

diff --git a/server/game.cpp b/server/game.cpp
index c8950ce..565468b 100644
--- a/server/game.cpp
+++ b/server/game.cpp
@@ -200,7 +200,18 @@ void Game::handle_action_draw(Action action) {
 			round_update_draw();
 		} break;
 		
-		case Action::Kan:
+		case Action::Kan: {
+			if(action.target_type == Action::Index) {
+				players[current_player].make_kan(action.target_offset - 2);
+				dora.push_back(wall.take_one());
+			} else {
+				players[current_player].make_kan_extend(action.target_offset);
+				kan_dora_pending = true;
+			}
+			players[current_player].draw(wall.take_one());
+			round_update_draw();
+		} break;
+		
 		case Action::Draw:
 			// Not implemented yet.
 		
diff --git a/server/game.h b/server/game.h
index fca71fa..c8c5d6a 100644
--- a/server/game.h
+++ b/server/game.h
@@ -102,6 +102,12 @@ class Game : public boost::enable_shared_from_this<Game> {
 				
 				//! Make open kan from tile.
 				void make_kan(Tile tile, int target, PlayerNum discarder);
+				
+				//! Make concealed kan.
+				void make_kan(int target);
+				
+				//! Make extended kan.
+				void make_kan_extend(int target);
 		};
 		
 		Player players[4];
diff --git a/server/player.cpp b/server/player.cpp
index 2454a98..0c30608 100644
--- a/server/player.cpp
+++ b/server/player.cpp
@@ -379,3 +379,45 @@ void Game::Player::make_kan(Tile tile, int target, PlayerNum discarder) {
 	
 	open.push_back(Set(Set::Kan, kan, true));
 }
+
+void Game::Player::make_kan(int target) {
+	Tiles kan;
+	
+	Tiles::iterator it = hand.begin() + target;
+	Tile t = *it;
+	kan.push_back(Tile::Back);
+	it = hand.erase(it);
+	
+	it = std::find(it, hand.end(), t);
+	kan.push_back(*it);
+	it = hand.erase(it);
+	
+	it = std::find(it, hand.end(), t);
+	kan.push_back(*it);
+	it = hand.erase(it);
+	
+	it = std::find(it, hand.end(), t);
+	kan.push_back(Tile::Back);
+	hand.erase(it);
+	
+	open.push_back(Set(Set::Kan, kan, false));
+}
+
+void Game::Player::make_kan_extend(int target) {
+	Set& set = open[target - 1];
+	
+	Tiles::iterator it = std::find(hand.begin(), hand.end(), set.tiles.front());
+	Tile t = *it;
+	hand.erase(it);
+	
+	t.rotated = true;
+	
+	for(it = set.tiles.begin(); it != set.tiles.end(); it++) {
+		if(it->rotated) {
+			set.tiles.insert(it + 1, t);
+			break;
+		}
+	}
+	
+	set.type = Set::Kan;
+}