From fae209a9e93400c3a2072befda9c820634cf9278 Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Sat, 25 Dec 2010 12:54:59 +0100
Subject: Restructured repository.

---
 src/player.cpp | 595 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 595 insertions(+)
 create mode 100644 src/player.cpp

(limited to 'src/player.cpp')

diff --git a/src/player.cpp b/src/player.cpp
new file mode 100644
index 0000000..a267b1d
--- /dev/null
+++ b/src/player.cpp
@@ -0,0 +1,595 @@
+#include "game.h"
+
+#include "hand.h"
+
+#include <boost/assign/list_of.hpp>
+using boost::assign::list_of;
+
+void Player::round_start(int w) {
+	// Reset contents.
+	hand.clear();
+	open.clear();
+	pond.clear();
+	tenpai_indexes.clear();
+	riichi = false;
+	score = 25000;
+	wind = w;
+	won = 0;
+	
+	// Notify client of round start.
+	client->round_start();
+}
+
+PlayerState Player::get_state() {
+	Tilegroups h;
+	h.push_back(hand);
+	
+	for(Sets::iterator it = open.begin(); it != open.end(); it++) {
+		h.push_back(it->tiles);
+	}
+	
+	PlayerState state = {h, pond, riichi, score, wind};
+	return state;
+}
+
+PlayerState Player::get_state_filtered() {
+	Tiles hand_filtered;
+	for(int i = 0; i < hand.size(); i++) {
+		hand_filtered.push_back(Tile::Back);
+	}
+	
+	Tilegroups h;
+	h.push_back(hand_filtered);
+	
+	for(Sets::iterator it = open.begin(); it != open.end(); it++) {
+		h.push_back(it->tiles);
+	}
+	
+	PlayerState state = {h, pond, riichi, score, wind};
+	return state;
+}
+
+Actions Player::get_actions_draw() {
+	Actions possible_actions;
+	
+	// Check if player can force a draw.
+	// TODO: Implementation. (Low priority)
+	
+	// Check if player can tsumo.
+	if(can_tsumo()) {
+		possible_actions.push_back(Action(Action::Tsumo));
+	}
+	
+	// Check if player can declare a concealed kan.
+	Targets targets = can_kan();
+	for(Targets::iterator it = targets.begin(); it != targets.end(); it++) {
+		possible_actions.push_back(Action(Action::Kan, Action::Index, *it + 2));
+	}
+	
+	// Check if player can extend an open pon.
+	targets = can_kan_extend();
+	for(Targets::iterator it = targets.begin(); it != targets.end(); it++) {
+		possible_actions.push_back(Action(Action::Kan, Action::Group, *it));
+	}
+	
+	if(!riichi) {
+		// Check if player can riichi.
+		if(can_riichi()) {
+			possible_actions.push_back(Action(Action::Riichi));
+		}
+		
+		// List all tiles that can be discarded.
+		for(std::size_t i = 0; i < hand.size(); i++) {
+			// Skip tiles already used to call kan.
+			if(possible_actions.contains(Action(Action::Kan, Action::Index, i))) {
+				continue;
+			}
+			
+			possible_actions.push_back(Action(Action::Discard, Action::Index, i));
+		}
+	
+	} else {
+		if(tenpai_indexes) {
+			for(List<int>::iterator it = tenpai_indexes.begin(); it != tenpai_indexes.end(); it++) {
+				possible_actions.push_back(Action(Action::Discard, Action::Index, *it));
+			}
+			tenpai_indexes.clear();
+		} else {
+			// Only tile that can be discarded is the last drawn one.
+			possible_actions.push_back(Action(Action::Discard, Action::Index, hand.size() - 1));
+		}
+	}
+	
+	return possible_actions;
+}
+
+Actions Player::get_actions_discard(Tile tile, PlayerNum discarder) {
+	Actions possible_actions;
+	
+	if(!riichi) {
+		// Check if tile can be called for a chi. Enumerate all combinations.
+		if(discarder == 3) {
+			Targets targets = can_chi(tile);
+			if(!targets.empty()) {
+				for(Targets::iterator it = targets.begin(); it != targets.end(); it++) {
+					possible_actions.push_back(Action(Action::Chi, Action::Index, *it));
+				}
+			}
+		}
+		
+		// Check if tile can be called for a pon.
+		int target = can_pon(tile);
+		if(target >= 0) {
+			possible_actions.push_back(Action(Action::Pon, Action::Index, target + 1));
+			
+			// Check if tile can be called for a kan.
+			if(can_kan(tile, target)) {
+				possible_actions.push_back(Action(Action::Kan, Action::Index, target + 2));
+			}
+		}
+	}
+	
+	// Check if tile can be ron-ed.
+	if(can_ron(tile)) {
+		possible_actions.push_back(Action(Action::Ron));
+	}
+	
+	// If any action is possible, add option to pass.
+	if(possible_actions) {
+		possible_actions.push_back(Action::Pass);
+	}
+	
+	return possible_actions;
+}
+
+bool Player::can_riichi() {
+	if(open) {
+		return false;
+	}
+	
+	// Iterate over the hand, testing to remove each tile and see if it gives tenpai.
+	for(Tiles::iterator it = hand.begin(); it != hand.end(); it++) {
+		Tiles tiles = hand;
+		tiles.del(it - hand.begin());
+		tiles.sort();
+		
+		if(Hand::tenpai(tiles)) {
+			tenpai_indexes.push_back(it - hand.begin());
+		}
+	}
+	
+	return bool(tenpai_indexes);
+}
+
+Player::Targets Player::can_chi(Tile tile) {
+	Targets targets;
+	
+	Tile::Set set = tile.get_set();
+	int num = tile.get_num();
+	
+	// Check if tile actually can be chi-ed.
+	if(set == Tile::Honor) {
+		return targets;
+	}
+	
+	bool have_above = false;
+	
+	// Check if we have tile below.
+	Tiles::iterator it = std::find(hand.begin(), hand.end(), Tile(set, num - 1));
+	if(num > 1 && it != hand.end()) {
+		
+		// Check if we also have tile below tile below.
+		Tiles::iterator it2 = std::find(hand.begin(), hand.end(), Tile(set, num - 2));
+		if(num > 2 && it2 != hand.end()) {
+			targets.push_back(it2 - hand.begin()); // (T-2 T-1 T)
+		}
+		
+		// Check if we have tile above.
+		it2 = std::find(hand.begin(), hand.end(), Tile(set, num + 1));
+		if(num < 9 && it2 != hand.end()) {
+			targets.push_back(it - hand.begin()); // (T-1 T T+1)
+			have_above = true;
+			it = it2;
+		}
+	}
+	
+	// Check if we have tile above.
+	if(have_above || (it = std::find(hand.begin(), hand.end(), Tile(set, num + 1))) != hand.end()) {
+		// Check if we have tile above tile above.
+		Tiles::iterator it2 = std::find(hand.begin(), hand.end(), Tile(set, num + 2));
+		if(num < 8 && it2 != hand.end()) {
+			targets.push_back(it - hand.begin()); // (T T+1 T+2)
+		}
+	}
+	
+	return targets;
+}
+
+int Player::can_pon(Tile tile) {
+	Tiles::iterator it = std::find(hand.begin(), hand.end(), tile);
+	if(it + 1 < hand.end() && it[1] == tile) {
+		return it - hand.begin();
+	}
+	
+	return -1;
+}
+
+Player::Targets Player::can_kan() {
+	Targets targets;
+	
+	for(Tiles::iterator it = hand.begin(); it != hand.end(); it++) {
+		Tiles::iterator it_s = it;
+		int i = 1;
+		do {
+			it_s = std::find(it_s + 1, hand.end(), *it);
+		} while(it_s != hand.end() && i++);
+		if(i >= 4) {
+			targets.push_back(it - hand.begin());
+		}
+	}
+	
+	return targets;
+}
+
+Player::Targets Player::can_kan_extend() {
+	Targets targets;
+	
+	for(Sets::iterator it = open.begin(); it != open.end(); it++) {
+		if(it->type == Set::Pon && hand.contains(it->tiles.front())) {
+			targets.push_back(it - open.begin() + 1);
+		}
+	}
+	
+	return targets;
+}
+
+bool Player::can_kan(Tile tile, int target) {
+	if(std::size_t(target + 2) < hand.size() && hand[target + 2] == tile) {
+		return true;
+	}
+	return false;
+}
+
+bool Player::can_tsumo() {
+	Tiles tiles = hand;
+	tiles.sort();
+	return Hand::agari(tiles);
+}
+
+bool Player::can_ron(Tile tile) {
+	// Check furiten.
+	if(pond.contains(tile)) {
+		return false;
+	}
+	// TODO: Furiten due to unclaimed discard in last go-around.
+	
+	Tiles tiles = hand;
+	tiles.push_back(tile);
+	tiles.sort();
+	return Hand::agari(tiles);
+}
+
+void Player::draw(Tile tile) {
+	hand.push_back(tile);
+}
+
+void Player::discard(int target) {
+	Tile tile = hand[target];
+	hand.erase(hand.begin() + target);
+	hand.sort();
+	pond.push_back(tile);
+}
+
+Tile Player::last_discard() {
+	return pond.back();
+}
+
+Tile Player::claim() {
+	Tile& t = pond.back();
+	t.invisible = true;
+	return t;
+}
+
+void Player::declare_riichi() {
+	riichi = true;
+}
+
+void Player::make_chi(Tile tile, int target) {
+	Tiles chi;
+	
+	tile.rotated = true;
+	chi.push_back(tile);
+	
+	Tile::Set set = tile.get_set();
+	int num = tile.get_num();
+	
+	Tiles::iterator it = hand.begin();
+	
+	switch(hand[target].get_num() - num) {
+		case -2:
+			it = std::find(it, hand.end(), Tile(set, num - 2));
+			chi.push_back(*it);
+			it = hand.erase(it);
+		
+		case -1:
+			it = std::find(it, hand.end(), Tile(set, num - 1));
+			chi.push_back(*it);
+			it = hand.erase(it);
+			
+		case 1:
+			if(chi.size() == 3) {
+				break;
+			}
+			
+			it = std::find(it, hand.end(), Tile(set, num + 1));
+			chi.push_back(*it);
+			it = hand.erase(it);
+			
+			if(chi.size() == 3) {
+				break;
+			}
+			
+			it = std::find(it, hand.end(), Tile(set, num + 2));
+			chi.push_back(*it);
+			hand.erase(it);
+	}
+	
+	open.push_back(Set(Set::Chi, chi, true));
+}
+
+void Player::make_pon(Tile tile, int target, PlayerNum discarder) {
+	Tiles pon;
+	
+	tile.rotated = true;
+	
+	if(discarder == 3) {
+		pon.push_back(tile);
+	}
+	
+	pon.push_back(hand[target]);
+	hand.del(target);
+	
+	if(discarder == 2) {
+		pon.push_back(tile);
+	}
+	
+	pon.push_back(hand[target]);
+	hand.del(target);
+	
+	if(discarder == 1) {
+		pon.push_back(tile);
+	}
+	
+	open.push_back(Set(Set::Pon, pon, true));
+}
+
+void Player::make_kan(Tile tile, int target, PlayerNum discarder) {
+	Tiles kan;
+	
+	tile.rotated = true;
+	
+	if(discarder == 3) {
+		kan.push_back(tile);
+	}
+	
+	kan.push_back(hand[target]);
+	hand.del(target);
+	
+	if(discarder == 2) {
+		kan.push_back(tile);
+	}
+	
+	kan.push_back(hand[target]);
+	hand.del(target);
+	
+	kan.push_back(hand[target]);
+	hand.del(target);
+	
+	if(discarder == 1) {
+		kan.push_back(tile);
+	}
+	
+	open.push_back(Set(Set::Kan, kan, true));
+}
+
+void 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 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;
+}
+
+void Player::declare_ron(Tile tile) {
+	hand.push_back(tile);
+	// TODO: Mark winning tile.
+	hand.sort();
+	
+	List<Sets> hands = Hand::get_breakdowns(hand);
+	
+	Sets hand = hands.front();
+	hand.insert(hand.end(), open.begin(), open.end());
+	
+	List<std::pair<std::string, int> > han;
+	
+	Score score = calculate_score(hand, han, false);
+	
+	won = true;
+	won_han = han;
+	won_value = score;
+}
+
+void Player::declare_tsumo() {
+	// TODO: Mark winning tile.
+	hand.sort();
+	
+	List<Sets> hands = Hand::get_breakdowns(hand);
+	
+	Sets hand = hands.front();
+	hand.insert(hand.end(), open.begin(), open.end());
+	
+	List<std::pair<std::string, int> > han;
+	
+	Score score = calculate_score(hand, han, true);
+	
+	won = true;
+	won_han = han;
+	won_value = score;
+}
+
+Score Player::calculate_score(const Sets& hand, List<std::pair<std::string, int> >& han, bool tsumo) {
+	Tiles yakuhai = list_of(Tile::Chun)(Tile::Hatsu)(Tile::Haku); // TODO: Add seat and prevalent wind.
+	Tiles dora; // TODO: Fill this.
+	Tiles uradora; // TODO: Fill this.
+	
+	Score score(0, 20, 0); // Always 20 fu for winning.
+	
+	// Check riichi.
+	if(riichi) {
+		score.yaku += 1;
+		han.push_back(std::make_pair("Riichi", 1));
+		// TODO: Check ippatsu.
+	}
+	
+	// Check menzen tsumo.
+	if(tsumo && !open) {
+		score.yaku += 1;
+		han.push_back(std::make_pair("Menzen tsumo", 1));
+	}
+	
+	bool possible_tanyao = true;
+	bool possible_toitoi = true;
+	int dora_n = 0;
+	int uradora_n = 0;
+	int akadora_n = 0;
+	
+	for(Sets::const_iterator set = hand.begin(); set != hand.end(); set++) {
+		switch(set->type) {
+			case Set::Pair:
+				// Check for pair-related fu.
+				score.fu += 2 * yakuhai.count(set->tiles.front());
+				
+				break;
+			
+			case Set::Chi:
+				// Toitoi can't contain chi.
+				possible_toitoi = false;
+				break;
+			
+			case Set::Pon:
+			case Set::Kan:
+				// Calculate fu.
+				score.fu += 2 << (!set->open + !set->tiles.front().is_simple() + 2 * (set->type == Set::Kan));
+				
+				// Check yakuhai.
+				if(int yakuhai_n = yakuhai.count(set->tiles.front())) {
+					score.yaku += yakuhai_n;
+					han.push_back(std::make_pair("Yakuhai", yakuhai_n)); // TODO: Specify which tile.
+				}
+				
+				break;
+		}
+		
+		for(Tiles::const_iterator tile = set->tiles.begin(); tile != set->tiles.end(); tile++) {
+			// Check tanyao.
+			if(!tile->is_simple()) {
+				possible_tanyao = false;
+			}
+			
+			// Check dora.
+			dora_n += dora.count(*tile);
+			
+			// Check uradora.
+			uradora_n += uradora.count(*tile);
+			
+			// Check akadora.
+			if(tile->red) {
+				akadora_n += 1;
+			}
+		}
+	}
+	
+	// Check tanyao.
+	if(possible_tanyao) {
+		score.yaku += 1;
+		han.push_back(std::make_pair("Tanyao", 1));
+	}
+	
+	// Check toitoi.
+	if(possible_toitoi) {
+		score.yaku += 2;
+		han.push_back(std::make_pair("Toitoi", 2));
+	}
+	
+	// Check pinfu.
+	if(score.fu == 20) {
+		if(open) {
+			score.fu += 2;
+		} else {
+			score.yaku += 1;
+			han.push_back(std::make_pair("Pinfu", 1));
+		}
+	} else if(tsumo) {
+		score.fu += 2;
+	}
+	
+	// Check fu for ron.
+	if(!tsumo && !open) {
+		// 10 fu for ron.
+		score.fu += 10;
+	}
+	
+	// Check dora.
+	if(dora_n) {
+		score.dora += dora_n;
+		han.push_back(std::make_pair("Dora", dora_n));
+	}
+	
+	// Check uradora.
+	if(uradora_n) {
+		score.dora += uradora_n;
+		han.push_back(std::make_pair("Uradora", uradora_n));
+	}
+	
+	// Check akadora.
+	if(akadora_n) {
+		score.dora += akadora_n;
+		han.push_back(std::make_pair("Akadora", akadora_n));
+	}
+	
+	return score;
+}
-- 
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