Fix compilation with the latest version of nCine

- Rename the interval method of the application class

src/EnemyPool.cpp

@@ -45,7 +45,7 @@ void EnemyPool::reset()
 	lastShootTime_ = nc::TimeStamp::now();
 }
 
-void EnemyPool::update(float interval)
+void EnemyPool::update(float frameTime)
 {
 	// Bounding box of alive enemies
 	xMin_ = nc::theApplication().width();
@@ -80,12 +80,12 @@ void EnemyPool::update(float interval)
 		{
 			case MOVE_RIGHT:
 			{
-				enemy.moveX(roundf(interval * horizontalSpeed_));
+				enemy.moveX(roundf(frameTime * horizontalSpeed_));
 				break;
 			}
 			case MOVE_LEFT:
 			{
-				enemy.moveX(-roundf(interval * horizontalSpeed_));
+				enemy.moveX(-roundf(frameTime * horizontalSpeed_));
 				break;
 			}
 			case MOVE_DOWNRIGHT:

src/EnemyPool.h

@@ -22,7 +22,7 @@ class EnemyPool
 	void reset();
 
 	/// Updates positions, transitions states and calculates the bounding box
-	void update(float interval);
+	void update(float frameTime);
 	/*! \note This is the only drawing method that contains logic to use more than a single sprite for pool entities */
 	void draw();
 

src/Game.cpp

@@ -41,7 +41,7 @@ Game::Game()
 
 Game::~Game() = default;
 
-void Game::update(float interval)
+void Game::update(float frameTime)
 {
 	switch (state_)
 	{
@@ -65,17 +65,17 @@ void Game::update(float interval)
 			screenString_.format("Score: %u - Lives: %u", player_->score(), player_->lives());
 			screenText_->setString(screenString_);
 
-			bombPool_->updateBombs(interval);
+			bombPool_->updateBombs(frameTime);
 			bombPool_->draw();
-			enemyPool_->update(interval);
+			enemyPool_->update(frameTime);
 			enemyPool_->draw();
-			rocketPool_->updateRockets(interval);
+			rocketPool_->updateRockets(frameTime);
 			rocketPool_->draw();
 
 			if (playerMovement_ == PlayerMovement::RIGHT)
-				player_->move(interval);
+				player_->move(frameTime);
 			else if (playerMovement_ == PlayerMovement::LEFT)
-				player_->move(-interval);
+				player_->move(-frameTime);
 
 			bool rocketEnemyCollision = CollisionManager::performCollisions(rocketPool_.get(), enemyPool_.get());
 			bool bombPlayerCollision = CollisionManager::performCollisions(player_.get(), bombPool_.get());

src/Game.h

@@ -47,7 +47,7 @@ class Game
 
 	Game();
 	~Game();
-	void update(float interval);
+	void update(float frameTime);
 	inline void reset() { state_ = GameState::START; }
 	void togglePause();
 

src/Player.cpp

@@ -12,9 +12,9 @@ Player::Player(ProjectilePool *rocketPool, nc::Texture *playerTexture)
 	reset();
 }
 
-void Player::move(float interval)
+void Player::move(float frameTime)
 {
-	sprite_.moveX(roundf(interval * Conf::PlayerSpeed));
+	sprite_.moveX(roundf(frameTime * Conf::PlayerSpeed));
 
 	// Clamping to window horizontal borders
 	if (sprite_.position().x < 0.0f)

src/Player.h

@@ -17,7 +17,7 @@ class Player
 	Player(ProjectilePool *rocketPool, nc::Texture *playerTexture);
 
 	/// Move the player by an amount specified by the time passed since last frame
-	void move(float interval);
+	void move(float frameTime);
 	void shoot();
 
 	inline unsigned int lives() const { return lives_; }

src/ProjectilePool.cpp

@@ -21,23 +21,23 @@ bool ProjectilePool::shoot(float x, float y)
 	return (projectile != nullptr);
 }
 
-void ProjectilePool::updateBombs(float interval)
+void ProjectilePool::updateBombs(float frameTime)
 {
 	// Traverse the array backwards to release sprites
 	for (int i = projectiles_.acquiredSize() - 1; i >= 0; i--)
 	{
-		projectiles_[i].moveY(-roundf(interval * Conf::BombSpeed));
+		projectiles_[i].moveY(-roundf(frameTime * Conf::BombSpeed));
 		if (projectiles_[i].position().y + projectiles_.spriteHeight() * 0.5f < 0.0f)
 			projectiles_.release(i);
 	}
 }
 
-void ProjectilePool::updateRockets(float interval)
+void ProjectilePool::updateRockets(float frameTime)
 {
 	// Traverse the array backwards to release sprites
 	for (int i = projectiles_.acquiredSize() - 1; i >= 0; i--)
 	{
-		projectiles_[i].moveY(roundf(interval * Conf::RocketSpeed));
+		projectiles_[i].moveY(roundf(frameTime * Conf::RocketSpeed));
 		if (projectiles_[i].position().y - projectiles_.spriteHeight() * 0.5f > nc::theApplication().height())
 			projectiles_.release(i);
 	}

src/ProjectilePool.h

@@ -17,9 +17,9 @@ class ProjectilePool
 	bool shoot(float x, float y);
 
 	/// Updates positions and returns to the pool a bomb that goes beyond the bottom of the window
-	void updateBombs(float interval);
+	void updateBombs(float frameTime);
 	/// Updates positions and returns to the pool a rocket that goes beyond the top of the window
-	void updateRockets(float interval);
+	void updateRockets(float frameTime);
 
 	void draw();
 	void reset();

src/invaders.cpp

@@ -59,8 +59,8 @@ void MyEventHandler::onFrameStart()
 	else if (axisValue < -nc::IInputManager::LeftStickDeadZone)
 		game_->movePlayer(Game::PlayerMovement::LEFT);
 
-	const float interval = nc::theApplication().interval();
-	game_->update(interval);
+	const float frameTime = nc::theApplication().frameTime();
+	game_->update(frameTime);
 }
 
 #ifdef __ANDROID__