Merge pull request #26 from mod-cpp/owaage_test_refactor

Testing and Code refactor.

lib/Board.cpp

@@ -54,7 +54,7 @@ constexpr std::array<std::array<int, COLUMNS>, ROWS> board = {{
 // clang-format on
 
 static Cell cellAtPosition(GridPosition point) {
-  if (point.x >= COLUMNS || point.y >= ROWS)
+  if (point.x < 0 || point.x >= COLUMNS || point.y < 0 || point.y >= ROWS)
     return Cell::wall;
   return Cell(board[point.y][point.x]);
 }
@@ -64,10 +64,10 @@ bool isWalkableForPacMan(GridPosition point) {
 }
 
 bool isWalkableForGhost(GridPosition point, GridPosition origin, bool isEyes) {
-  Cell cell = cellAtPosition(point);
+  const Cell cell = cellAtPosition(point);
   if (cell == Cell::wall)
     return false;
-  return isEyes || (isInPen(origin) || !isInPen(point));
+  return isEyes || isInPen(origin) || !isInPen(point);
 }
 
 bool isInPen(GridPosition point) {

lib/CMakeLists.txt

@@ -5,7 +5,7 @@ if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     find_package(OpenGL REQUIRED COMPONENTS OpenGL GLX)
 endif ()
 
-file(GLOB_RECURSE sources CONFIGURE_DEPENDS "*.cpp")
+file(GLOB_RECURSE sources CONFIGURE_DEPENDS "*.cpp" "*.hpp")
 
 add_library(libpacman ${sources})
 

lib/Canvas.cpp

@@ -29,7 +29,7 @@ Canvas::Canvas()
   game_font = loadFont("retro_font.ttf");
 }
 
-void Canvas::update(const GameState & gameState, const Score & score) {
+void Canvas::update(const GameState & gameState) {
   clear();
 
   renderMaze();
@@ -41,8 +41,8 @@ void Canvas::update(const GameState & gameState, const Score & score) {
   renderGhost(gameState.inky);
   renderGhost(gameState.clyde);
 
-  renderScore(score.points);
-  renderLives(score.lives);
+  renderScore(gameState.score.points);
+  renderLives(gameState.score.lives);
 
   renderPacMan(gameState.pacMan);
 

lib/Game.cpp

@@ -5,125 +5,33 @@
 
 namespace pacman {
 
-constexpr int DEFAULT_LIVES = 3;
-constexpr int NORMAL_PELLET_POINTS = 10;
-constexpr int POWER_PELLET_POINTS = 50;
-constexpr int GHOST_POINTS = 200;
-
-Game::Game() {
-  score.lives = DEFAULT_LIVES;
-}
-
 void Game::run() {
-
   const std::chrono::milliseconds delta_time(1000 / 60);
   std::chrono::milliseconds accumulator(0);
   auto current_time = std::chrono::system_clock::now();
 
-  InputState inputState;
-
   while (true) {
-    auto newTime = std::chrono::system_clock::now();
-    auto frameTime = std::chrono::duration_cast<std::chrono::milliseconds>(newTime - current_time);
+    const auto newTime = std::chrono::system_clock::now();
+    const auto frameTime = std::chrono::duration_cast<std::chrono::milliseconds>(newTime - current_time);
+
     current_time = newTime;
     accumulator += frameTime;
-    processEvents(inputState);
-    if (inputState.close)
+
+    processEvents(gameState.inputState);
+    if (gameState.inputState.close)
       return;
+
     while (accumulator >= delta_time) {
-      step(delta_time, inputState);
+      gameState.step(delta_time);
       accumulator -= delta_time;
     }
-    canvas.update(gameState, score);
-  }
-}
-
-void Game::killPacMan() {
-  gameState.pacMan.die();
-  score.lives--;
-  timeSinceDeath = std::chrono::milliseconds(1);
-}
-
-bool Game::pacManDying() const {
-  return timeSinceDeath.count() != 0;
-}
-
-void Game::handleDeathAnimation(std::chrono::milliseconds delta) {
-  timeSinceDeath += delta;
-
-  if (timeSinceDeath.count() > 1000) {
-    gameState.blinky.reset();
-    gameState.pinky.reset();
-    gameState.inky.reset();
-    gameState.clyde.reset();
-    gameState.pacMan.reset();
-    timeSinceDeath = std::chrono::milliseconds(0);
-  }
-}
-
-void Game::step(std::chrono::milliseconds delta, InputState inputState) {
-
-  gameState.pacMan.update(delta, inputState.direction());
-
-  if (pacManDying()) {
-    handleDeathAnimation(delta);
-    return;
-  }
-
-  if (!gameState.pacMan.hasDirection())
-    return;
-
-  gameState.blinky.update(delta, gameState);
-  gameState.pinky.update(delta, gameState);
-  gameState.inky.update(delta, gameState);
-  gameState.clyde.update(delta, gameState);
-
-  checkCollision(gameState.blinky);
-  checkCollision(gameState.pinky);
-  checkCollision(gameState.inky);
-  checkCollision(gameState.clyde);
-
-
-  eatPellets();
-}
-
-void Game::checkCollision(Ghost & ghost) {
-  if (pacManDying() || ghost.isEyes())
-    return;
-
-  if (ghost.positionInGrid() != gameState.pacMan.positionInGrid())
-    return;
-
-  if (ghost.isFrightened()) {
-    ghost.die();
-    score.points += GHOST_POINTS;
-  } else {
-    killPacMan();
-  }
-}
-
-void Game::eatPellets() {
-  const auto pos = gameState.pacMan.positionInGrid();
-  if (gameState.pellets.eatPelletAtPosition(pos)) {
-    score.eatenPellets++;
-    score.points += NORMAL_PELLET_POINTS;
-  }
-
-  if (gameState.superPellets.eatPelletAtPosition(pos)) {
-    score.eatenPellets++;
-    score.points += POWER_PELLET_POINTS;
-
-    gameState.blinky.frighten();
-    gameState.pinky.frighten();
-    gameState.inky.frighten();
-    gameState.clyde.frighten();
 
+    canvas.update(gameState);
   }
 }
 
 void Game::processEvents(InputState & inputState) {
-
-  auto event = canvas.pollEvent();
+  const auto event = canvas.pollEvent();
   if (event && event.value().type == sf::Event::Closed) {
     inputState.close = true;
     return;

lib/GameState.cpp

@@ -0,0 +1,89 @@
+#include "GameState.hpp"
+
+namespace pacman {
+
+constexpr int GHOST_POINTS = 200;
+constexpr int NORMAL_PELLET_POINTS = 10;
+constexpr int POWER_PELLET_POINTS = 50;
+
+void GameState::step(std::chrono::milliseconds delta) {
+  pacMan.update(delta, inputState.direction());
+
+  if (isPacManDying()) {
+    handleDeathAnimation(delta);
+    return;
+  }
+
+  if (!pacMan.hasDirection())
+    return;
+
+  blinky.update(delta, *this); // waage: urgh, I wanna remove this
+  pinky.update(delta, *this); // ghosts know what they want, which is usually pacman's location
+  inky.update(delta, *this);
+  clyde.update(delta, *this);
+
+  checkCollision(blinky);
+  checkCollision(pinky);
+  checkCollision(inky);
+  checkCollision(clyde);
+
+  eatPellets();
+}
+
+void GameState::checkCollision(Ghost & ghost) {
+  if (isPacManDying() || ghost.isEyes())
+    return;
+
+  if (ghost.positionInGrid() != pacMan.positionInGrid())
+    return;
+
+  if (ghost.isFrightened()) {
+    ghost.die();
+    score.points += GHOST_POINTS;
+  } else {
+    killPacMan();
+  }
+}
+
+void GameState::handleDeathAnimation(std::chrono::milliseconds delta) {
+  timeSinceDeath += delta;
+
+  if (timeSinceDeath.count() > 1000) {
+    blinky.reset();
+    pinky.reset();
+    inky.reset();
+    clyde.reset();
+    pacMan.reset();
+    timeSinceDeath = std::chrono::milliseconds(0);
+  }
+}
+
+void GameState::eatPellets() {
+  const auto pos = pacMan.positionInGrid();
+  if (pellets.eatPelletAtPosition(pos)) {
+    score.eatenPellets++;
+    score.points += NORMAL_PELLET_POINTS;
+  }
+
+  if (superPellets.eatPelletAtPosition(pos)) {
+    score.eatenPellets++;
+    score.points += POWER_PELLET_POINTS;
+
+    blinky.frighten();
+    pinky.frighten();
+    inky.frighten();
+    clyde.frighten();
+  }
+}
+
+void GameState::killPacMan() {
+  pacMan.die();
+  score.lives--;
+  timeSinceDeath = std::chrono::milliseconds(1);
+}
+
+bool GameState::isPacManDying() const {
+  return timeSinceDeath.count() != 0;
+}
+
+}

lib/Ghost.cpp

@@ -75,7 +75,7 @@ void Ghost::update(std::chrono::milliseconds time_delta, const GameState & gameS
 
   if (state == State::Scatter || state == State::Chase) {
     timeChase += time_delta;
-    auto newState = defaultStateAtDuration(std::chrono::duration_cast<std::chrono::seconds>(timeChase));
+    const auto newState = defaultStateAtDuration(std::chrono::duration_cast<std::chrono::seconds>(timeChase));
     if (newState != state) {
       direction = oppositeDirection(direction);
       state = newState;
@@ -95,6 +95,9 @@ void Ghost::updatePosition(std::chrono::milliseconds time_delta, const GameState
 
   double position_delta = (0.004 * time_delta.count()) * speed(gameState);
 
+  const auto old_position = pos;
+  const GridPosition old_grid_position = positionToGridPosition(old_position);
+
   switch (direction) {
     case Direction::NONE:
       break;
@@ -119,6 +122,10 @@ void Ghost::updatePosition(std::chrono::milliseconds time_delta, const GameState
   if (isPortal(positionInGrid(), direction)) {
     pos = gridPositionToPosition(teleport(positionInGrid()));
   }
+  else if (!isWalkableForGhost(positionInGrid(), old_grid_position, isEyes())) {
+    pos = old_position;
+    direction = oppositeDirection(direction);
+  }
 }
 
 /*
@@ -160,7 +167,6 @@ void Ghost::updateDirection(const GameState & gameState) {
   const Position target_position = target(gameState);
 
   for (auto & move : possible_moves) {
-
     if (isPortal(current_grid_position, move.direction))
       move.position = gridPositionToPosition(teleport(current_grid_position));
 
@@ -172,7 +178,7 @@ void Ghost::updateDirection(const GameState & gameState) {
     if (opposite_direction)
       continue;
 
-    const GridPosition grid_position = { size_t(move.position.x), size_t(move.position.y) };
+    const GridPosition grid_position = { int64_t(move.position.x), int64_t(move.position.y) };
     const bool can_walk = isWalkableForGhost(grid_position, current_grid_position, isEyes());
     if (!can_walk)
       continue;
@@ -184,7 +190,7 @@ void Ghost::updateDirection(const GameState & gameState) {
     return a.distance_to_target < b.distance_to_target;
   });
 
-  auto move = *optimal_move;
+  const auto & move = *optimal_move;
   direction = move.direction;
   last_grid_position = current_grid_position;
 }
@@ -204,13 +210,17 @@ void Ghost::updateAnimation(std::chrono::milliseconds time_delta) {
 Ghost::State Ghost::defaultStateAtDuration(std::chrono::seconds seconds) {
   // This array denotes the duration of each state, alternating between scatter and chase
   std::array changes = { /*scatter*/ 7, 20, 7, 20, 5, 20, 5 };
+
   // To know the current state we first compute the cumulative time using std::partial_sum
   // This gives us {7, 27, 34, 54, 59, 79, 84}
   std::partial_sum(std::begin(changes), std::end(changes), std::begin(changes));
+
   // Then we look for the first value in the array greater than the time spent in chase/scatter states
   auto it = std::upper_bound(std::begin(changes), std::end(changes), seconds.count());
+
   // We get the position of that iterator in the array
   auto count = std::distance(std::begin(changes), it);
+
   // Because the first positition is scatter, all the even positions will be scatter
   // all the odd positions will be chase
   return count % 2 == 0 ? State::Scatter : State::Chase;

lib/Inky.cpp

@@ -53,8 +53,8 @@ Position Inky::target(const GameState & gameState) const {
 
   // And selects a point on the line crossing blinky and this position that is at twice that distance
   // away from blinky
-  targetPosition.x += size_t((targetPosition.x - blinkyPosition.x) / distanceBetweenBlinkyAndTarget) * 2;
-  targetPosition.y += size_t((targetPosition.y - blinkyPosition.y) / distanceBetweenBlinkyAndTarget) * 2;
+  targetPosition.x += int64_t((targetPosition.x - blinkyPosition.x) / distanceBetweenBlinkyAndTarget) * 2;
+  targetPosition.y += int64_t((targetPosition.y - blinkyPosition.y) / distanceBetweenBlinkyAndTarget) * 2;
 
   return gridPositionToPosition(targetPosition);
 }

lib/PacMan.cpp

@@ -18,6 +18,7 @@ GridPosition PacMan::positionInGrid() const {
 void PacMan::die() {
   if (dead)
     return;
+
   dead = true;
 }
 
@@ -33,8 +34,10 @@ void PacMan::update(std::chrono::milliseconds time_delta, Direction input_direct
     updateAnimationPosition(time_delta, false);
     return;
   }
+
   if (input_direction != Direction::NONE)
     desired_direction = input_direction;
+
   const auto old = pos;
   updateMazePosition(time_delta);
   const bool paused = pos == old;
@@ -50,7 +53,6 @@ void PacMan::updateAnimationPosition(std::chrono::milliseconds time_delta, bool
 }
 
 void PacMan::updateMazePosition(std::chrono::milliseconds time_delta) {
-
   if (isPortal(positionInGrid(), direction)) {
     pos = gridPositionToPosition(teleport(positionInGrid()));
     return;
@@ -62,13 +64,13 @@ void PacMan::updateMazePosition(std::chrono::milliseconds time_delta) {
   auto moveToPosition = [position_delta](Position point, Direction move_direction) {
     switch (move_direction) {
       case Direction::LEFT:
-        return GridPosition{ std::size_t(point.x - position_delta), std::size_t(point.y) };
+        return GridPosition{ int64_t(point.x - position_delta), int64_t(point.y) };
       case Direction::RIGHT:
-        return GridPosition{ std::size_t(point.x + pacman_size), std::size_t(point.y) };
+        return GridPosition{ int64_t(point.x + pacman_size), int64_t(point.y) };
       case Direction::UP:
-        return GridPosition{ std::size_t(point.x), std::size_t(point.y - position_delta) };
+        return GridPosition{ int64_t(point.x), int64_t(point.y - position_delta) };
       case Direction::DOWN:
-        return GridPosition{ std::size_t(point.x), std::size_t(point.y + pacman_size) };
+        return GridPosition{ int64_t(point.x), int64_t(point.y + pacman_size) };
       case Direction::NONE:
       default:
         return positionToGridPosition(point);
@@ -79,31 +81,34 @@ void PacMan::updateMazePosition(std::chrono::milliseconds time_delta) {
     return isWalkableForPacMan(moveToPosition(pos, move_direction));
   };
 
-  if (canGo(desired_direction)) {
+  if (desired_direction != direction && canGo(desired_direction)) {
     direction = desired_direction;
   }
 
-  if (canGo(direction)) {
-    switch (direction) {
-      case Direction::NONE:
-        break;
-      case Direction::LEFT:
-        pos.x -= position_delta;
-        pos.y = std::floor(pos.y);
-        break;
-      case Direction::RIGHT:
-        pos.x += position_delta;
-        pos.y = std::floor(pos.y);
-        break;
-      case Direction::UP:
-        pos.x = std::floor(pos.x);
-        pos.y -= position_delta;
-        break;
-      case Direction::DOWN:
-        pos.x = std::floor(pos.x);
-        pos.y += position_delta;
-        break;
-    }
+  if (!canGo(direction)) {
+    return;
+  }
+
+  switch (direction) {
+    case Direction::LEFT:
+      pos.x -= position_delta;
+      pos.y = std::floor(pos.y);
+      break;
+    case Direction::RIGHT:
+      pos.x += position_delta;
+      pos.y = std::floor(pos.y);
+      break;
+    case Direction::UP:
+      pos.x = std::floor(pos.x);
+      pos.y -= position_delta;
+      break;
+    case Direction::DOWN:
+      pos.x = std::floor(pos.x);
+      pos.y += position_delta;
+      break;
+    case Direction::NONE:
+    default:
+      break;
   }
 }
 

lib/PacManAnimation.cpp

@@ -32,15 +32,13 @@ void PacManAnimation::updateAnimationPosition(std::chrono::milliseconds time_del
     return;
 
   animation_position_delta += (0.02) * double(time_delta.count());
-
-  animation_position = int(animation_position + animation_position_delta);
+  animation_position = int64_t(animation_position + animation_position_delta);
 
   if (!dead)
       animation_position = animation_position % 4;
 
   if(animation_position_delta > 1)
       animation_position_delta = animation_position_delta - 1;
-
 }
 
 void PacManAnimation::pause() {

lib/include/Atlas.hpp

@@ -47,8 +47,8 @@ constexpr GridPosition eyeSprite(Direction direction) {
 
 constexpr GridPosition ghostSprite(Ghost ghost, Direction direction, bool alternative) {
   assert(ghost >= Ghost::blinky && ghost <= Ghost::clyde && "Invalid Ghost");
-  auto y = static_cast<size_t>(ghost);
-  size_t x = 0;
+  auto y = static_cast<int64_t>(ghost);
+  int64_t x = 0;
   switch (direction) {
     case Direction::RIGHT:
       x = 0;

lib/include/Board.hpp

@@ -1,7 +1,5 @@
 #pragma once
 
-#include <SFML/Graphics.hpp>
-
 #include "Direction.hpp"
 #include "Position.hpp"
 #include <array>
@@ -20,8 +18,7 @@ std::vector<GridPosition> initialPelletPositions();
 
 std::vector<GridPosition> initialSuperPelletPositions();
 
-inline Position penDoorPosition() {
-  return { 13, 11 }; }
-  inline Position initialPacManPosition() { return { 13.5, 23 }; }
+inline Position penDoorPosition() { return { 13, 11 }; }
+inline Position initialPacManPosition() { return { 13.5, 23 }; }
 
-  } // namespace pacman
+} // namespace pacman

lib/include/Canvas.hpp

@@ -1,16 +1,20 @@
 #pragma once
 
+#include <SFML/Graphics.hpp>
+
 #include "GameState.hpp"
 #include "Position.hpp"
-#include "Score.hpp"
 #include <optional>
 
 namespace pacman {
 
+using Rect = sf::Rect<int>;
+using Sprite = sf::Sprite;
+
 class Canvas {
 public:
   Canvas();
-  void update(const GameState & gameState, const Score & score);
+  void update(const GameState & gameState);
   std::optional<sf::Event> pollEvent();
 
 private:

lib/include/Game.hpp

@@ -1,29 +1,20 @@
 #pragma once
 
-#include "Canvas.hpp"
 #include "GameState.hpp"
 #include "InputState.hpp"
+#include "Canvas.hpp"
 
 namespace pacman {
 
 class Game {
 public:
-  Game();
   void run();
 
 private:
   Canvas canvas;
   GameState gameState;
-  Score score;
-  std::chrono::milliseconds timeSinceDeath{};
 
-  void step(std::chrono::milliseconds delta, InputState inputState);
-  void eatPellets();
   void processEvents(InputState & inputState);
-  void checkCollision(Ghost & ghost);
-  void killPacMan();
-  bool pacManDying() const;
-  void handleDeathAnimation(std::chrono::milliseconds delta);
 };
 
 } // namespace pacman

lib/include/GameState.hpp

@@ -9,17 +9,31 @@
 #include "Pinky.hpp"
 #include "Score.hpp"
 #include "SuperPellets.hpp"
+#include "InputState.hpp"
 
 namespace pacman {
 
 struct GameState {
+  void step(std::chrono::milliseconds delta);
+
   Blinky blinky;
   Pinky pinky;
   Inky inky;
   Clyde clyde;
+
   PacMan pacMan;
+  InputState inputState;
   Pellets pellets;
   SuperPellets superPellets;
+
+  Score score;
+  std::chrono::milliseconds timeSinceDeath{};
+
+  void checkCollision(Ghost & ghost);
+  void handleDeathAnimation(std::chrono::milliseconds delta);
+  void eatPellets();
+  void killPacMan();
+  bool isPacManDying() const;
 };
 
 } // namespace pacman

lib/include/Ghost.hpp

@@ -23,9 +23,7 @@ public:
   virtual ~Ghost() = default;
 
   GridPosition currentSprite() const;
-
   Position position() const;
-
   GridPosition positionInGrid() const;
 
   void update(std::chrono::milliseconds time_delta, const GameState & gameState);
@@ -41,12 +39,6 @@ private:
   void updateDirection(const GameState & gameState);
 
 protected:
-  State defaultStateAtDuration(std::chrono::seconds seconds);
-
-  virtual double speed(const GameState & gameState) const = 0;
-  virtual Position target(const GameState & gameState) const = 0;
-  virtual Position initialPosition() const = 0;
-
   Atlas::Ghost spriteSet;
   Direction direction = Direction::NONE;
   double timeForAnimation = 0;
@@ -56,6 +48,13 @@ protected:
   std::chrono::milliseconds timeChase = {};
   Position pos;
   GridPosition last_grid_position = { 0, 0 };
+
+  State defaultStateAtDuration(std::chrono::seconds seconds);
+
+  virtual double speed(const GameState & gameState) const = 0;
+  virtual Position target(const GameState & gameState) const = 0;
+  virtual Position initialPosition() const = 0;
+
   bool isInPen() const;
 };
 

lib/include/PacMan.hpp

@@ -8,15 +8,10 @@
 
 namespace pacman {
 
-class Board;
-class InputState;
-
 class PacMan {
 public:
   GridPosition currentSprite() const;
-
   Position position() const;
-
   GridPosition positionInGrid() const;
 
   void update(std::chrono::milliseconds time_delta, Direction input_direction);

lib/include/PacManAnimation.hpp

@@ -18,7 +18,7 @@ public:
   void pause();
 
 private:
-  size_t animation_position = 0;
+  int64_t animation_position = 0;
   double animation_position_delta = 0.0;
 };
 

lib/include/Position.hpp

@@ -1,6 +1,5 @@
 #pragma once
 
-#include <SFML/Graphics.hpp>
 #include <cmath>
 
 namespace pacman {
@@ -11,17 +10,13 @@ struct Position {
 };
 
 struct GridPosition {
-  size_t x;
-  size_t y;
-  constexpr GridPosition(size_t x, size_t y) : x(x), y(y) {}
+  int64_t x;
+  int64_t y;
+  constexpr GridPosition(int64_t x, int64_t y) : x(x), y(y) {}
 };
 
-using Rect = sf::Rect<int>;
-
-using Sprite = sf::Sprite;
-
 inline GridPosition positionToGridPosition(Position pos) {
-  return { size_t(std::round(pos.x)), size_t(std::round(pos.y)) };
+  return { int64_t(std::round(pos.x)), int64_t(std::round(pos.y)) };
 }
 
 inline Position gridPositionToPosition(GridPosition pos) {
@@ -36,14 +31,14 @@ constexpr bool operator!=(const GridPosition & a, const GridPosition & b) {
   return !(a == b);
 }
 
-constexpr bool operator==(const Position & a, const Position & b) {
-  return a.x == b.x && a.y == b.y;
+inline bool operator==(const Position & a, const Position & b) {
+  // This is ok as a test unless x and y become very large.
+  constexpr double epsilon = std::numeric_limits<double>::epsilon();
+  return std::abs(a.x - b.x) <= epsilon && std::abs(a.y - b.y) <= epsilon;
 }
 
-constexpr bool operator!=(const Position & a, const Position & b) {
+inline bool operator!=(const Position & a, const Position & b) {
   return !(a == b);
 }
 
-
-
 } // namespace pacman

lib/include/Score.hpp

@@ -1,8 +1,10 @@
 #pragma once
 namespace pacman {
 
+constexpr int DEFAULT_LIVES = 3;
+
 struct Score {
-  int lives = 0;
+  int lives = DEFAULT_LIVES;
   int points = 0;
   int eatenPellets = 0;
 };

test/CMakeLists.txt

@@ -3,8 +3,9 @@ find_package(GTest REQUIRED)
 
 include(GoogleTest)
 
-add_executable(pacman_tests tests.cpp)
+file(GLOB_RECURSE sources CONFIGURE_DEPENDS "*.cpp")
+
+add_executable(pacman_tests ${sources})
 target_link_libraries(pacman_tests GTest::GTest libpacman)
 
-gtest_discover_tests(pacman_tests TEST_PREFIX pacman:)
-add_test(NAME monolithic COMMAND pacman_tests)
+gtest_discover_tests(pacman_tests)

test/testGameState.cpp

@@ -0,0 +1,26 @@
+#include "GameState.hpp"
+#include <gtest/gtest.h>
+#include <fmt/format.h>
+
+TEST(GameStateTest, Fuzz) {
+  pacman::GameState gameState;
+  //fmt::print("{}\n", gameState.pellets.currentPositions().size());
+
+  int pacManDeathCount = 0;
+  bool canCountDeath = false;
+  for (std::size_t i = 0; i < 50000; ++i) {
+    gameState.inputState.up = i % 7 ? true : false;
+    gameState.inputState.down = i % 11 ? true : false;
+    gameState.inputState.left = i % 13 ? true : false;
+    gameState.inputState.right = i % 17 ? true : false;
+
+    canCountDeath = !gameState.isPacManDying();
+    gameState.step(std::chrono::milliseconds(1000 / 30));
+    if (canCountDeath && gameState.isPacManDying()) {
+      pacManDeathCount++;
+    }
+  }
+
+  //fmt::print("{}\n", pacManDeathCount);
+  //fmt::print("{}\n", gameState.pellets.currentPositions().size());
+}

test/testGhost.cpp

@@ -0,0 +1,77 @@
+#include "Blinky.hpp"
+#include "Clyde.hpp"
+#include "Inky.hpp"
+#include "Pinky.hpp"
+#include <gtest/gtest.h>
+
+template<typename T>
+static void ghostInitHelper(const T& ghost, const double x, const double y) {
+  const pacman::Position pos{ x, y };
+  EXPECT_EQ(ghost.position(), pos);
+
+  const pacman::GridPosition gridPos = pacman::positionToGridPosition(pos);
+  EXPECT_EQ(ghost.positionInGrid(), gridPos);
+
+  EXPECT_FALSE(ghost.isEyes());
+  EXPECT_FALSE(ghost.isFrightened());
+}
+
+TEST(GhostTest, Init) {
+  pacman::Blinky blinky;
+  ghostInitHelper(blinky, 13.5, 11);
+
+  pacman::Clyde clyde;
+  ghostInitHelper(clyde, 15.5, 14);
+
+  pacman::Inky inky;
+  ghostInitHelper(inky, 13.5, 14);
+  
+  pacman::Pinky pinky;
+  ghostInitHelper(pinky, 11.5, 14);
+}
+
+template<typename T>
+static void ghostFrightenHelper(T& ghost) {
+  EXPECT_FALSE(ghost.isFrightened());
+  ghost.frighten();
+  EXPECT_TRUE(ghost.isFrightened());
+  ghost.reset();
+  EXPECT_FALSE(ghost.isFrightened());
+}
+
+TEST(GhostTest, Frighten) {
+  pacman::Blinky blinky;
+  ghostFrightenHelper(blinky);
+
+  pacman::Clyde clyde;
+  ghostFrightenHelper(clyde);
+
+  pacman::Inky inky;
+  ghostFrightenHelper(inky);
+
+  pacman::Pinky pinky;
+  ghostFrightenHelper(pinky);
+}
+
+template<typename T>
+static void ghostDeadHelper(T & ghost) {
+  EXPECT_FALSE(ghost.isEyes());
+  ghost.die();
+  EXPECT_TRUE(ghost.isEyes());
+  ghost.reset();
+  EXPECT_FALSE(ghost.isEyes());
+}
+
+TEST(GhostTest, Dead) {
+  pacman::Blinky blinky;
+  ghostDeadHelper(blinky);
+
+  pacman::Clyde clyde;
+  ghostDeadHelper(clyde);
+
+  pacman::Inky inky;
+  ghostDeadHelper(inky);
+
+  pacman::Pinky pinky;
+  ghostDeadHelper(pinky);
+}

test/testPacMan.cpp

@@ -0,0 +1,8 @@
+#include "PacMan.hpp"
+#include <gtest/gtest.h>
+
+TEST(PacManTest, InitialPosition) {
+  pacman::PacMan pacMan;
+  EXPECT_EQ(pacMan.position().x, 13.5);
+  EXPECT_EQ(pacMan.position().y, 23);
+}

test/testPosition.cpp

@@ -0,0 +1,46 @@
+#include "Position.hpp"
+#include <gtest/gtest.h>
+
+TEST(PositionTest, PositionInit) {
+  pacman::Position pos;
+  EXPECT_DOUBLE_EQ(pos.x, 0.0);
+  EXPECT_DOUBLE_EQ(pos.y, 0.0);
+
+  pacman::Position pos2{ 10.0, 20.0 };
+  EXPECT_DOUBLE_EQ(pos2.x, 10.0);
+  EXPECT_DOUBLE_EQ(pos2.y, 20.0);
+}
+
+TEST(PositionTest, GridPositionInit) {
+  pacman::GridPosition gridPos{ 10, 20 };
+  EXPECT_EQ(gridPos.x, 10);
+  EXPECT_EQ(gridPos.y, 20);
+}
+
+TEST(PositionTest, ConvertPositionToGridPosition) {
+  pacman::Position pos{ 10.0, 20.0 };
+  const auto gridPos = pacman::positionToGridPosition(pos);
+  EXPECT_EQ(gridPos.x, 10);
+  EXPECT_EQ(gridPos.y, 20);
+}
+
+TEST(PositionTest, ConvertGridPositionToPosition) {
+  pacman::GridPosition gridPos{ 10, 20 };
+  const auto pos = pacman::gridPositionToPosition(gridPos);
+  EXPECT_DOUBLE_EQ(pos.x, 10.0);
+  EXPECT_DOUBLE_EQ(pos.y, 20.0);
+}
+
+TEST(PositionTest, PositionEquality) {
+  pacman::Position pos1{ 10.0, 20.0 };
+  pacman::Position pos2{ 10.0, 20.0 };
+  EXPECT_TRUE(pos1 == pos2);
+
+  pacman::Position pos3{ 9.9, 19.9 };
+  EXPECT_FALSE(pos1 == pos3);
+
+  pos3.x += 0.1;
+  pos3.y += 0.1;
+
+  EXPECT_TRUE(pos1 == pos3);
+}

test/tests.cpp

@@ -1,12 +1,5 @@
-#include "PacMan.hpp"
 #include <gtest/gtest.h>
 
-TEST(PacManTest, InitialPosition) {
-  pacman::PacMan pacMan;
-  EXPECT_EQ(pacMan.position().x, 13.5);
-  EXPECT_EQ(pacMan.position().y, 23);
-}
-
 int main(int argc, char * argv[]) {
   testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();