src/Controller/GameController.php

@@ -35,14 +35,14 @@ class GameController
     private function prepareGame(int $mapId): array
     {
         $map = $this->mapRepository->getById($mapId);
-
         $session = $this->request->session();
 
         if (!($state = $session->get('state')) || $state['mapId'] !== $mapId) {
             $session->set('state', [
                 'mapId' => $mapId,
                 'area' => $map->getArea(),
-                'rounds' => []
+                'rounds' => [],
+                'currentRound' => -1
             ]);
         }
 

src/Controller/GameFlowController.php

@@ -30,25 +30,22 @@ class GameFlowController
             return new JsonContent(['error' => 'no_session_found']);
         }
 
-        if (count($state['rounds']) === 0) {
-            $place = $this->selectNewPlace($state, $mapId);
+        if (!isset($state['currentRound']) || $state['currentRound'] == -1 || $state['currentRound'] >= static::NUMBER_OF_ROUNDS) {
+            $this->startNewGame($state, $mapId);
+        }
 
-            $session->set('state', $state);
+        $response = [];
 
-            $data = [
-                'place' => [
-                    'panoId' => $place->getPanoIdCached(),
-                    'pov' => $place->getPov()->toArray()
-                ]
+        $last = $state['rounds'][$state['currentRound']];
+        $response['place'] = [
+            'panoId' => $last['panoId'],
+            'pov' => $last['pov']->toArray()
         ];
-        } else {
-            $rounds = count($state['rounds']);
-            $last = $state['rounds'][$rounds - 1];
 
-            $history = [];
-            for ($i = 0; $i < $rounds - 1; ++$i) {
+        $response['history'] = [];
+        for ($i = 0; $i < $state['currentRound']; ++$i) {
             $round = $state['rounds'][$i];
-                $history[] = [
+            $response['history'][] = [
                 'position' => $round['position']->toArray(),
                 'guessPosition' => $round['guessPosition']->toArray(),
                 'distance' => $round['distance'],
@@ -56,18 +53,7 @@ class GameFlowController
             ];
         }
 
-            $data = [
-                'history' => $history,
-                'place' => [
-                    'panoId' => $last['panoId'],
-                    'pov' => isset($last['pov']) ? // should be checked not to break with old sessions
-                        $last['pov']->toArray() :
-                        ['heading' => 0.0, 'pitch' => 0.0, 'zoom' => 0.0]
-                ]
-            ];
-        }
-
-        return new JsonContent($data);
+        return new JsonContent($response);
     }
 
     public function evaluateGuess(): IContent
@@ -79,7 +65,7 @@ class GameFlowController
             return new JsonContent(['error' => 'no_session_found']);
         }
 
-        $last = $state['rounds'][count($state['rounds']) - 1];
+        $last = $state['rounds'][$state['currentRound']];
 
         $position = $last['position'];
         $guessPosition = new Position((float) $this->request->post('lat'), (float) $this->request->post('lng'));
@@ -90,7 +76,9 @@ class GameFlowController
         $last['guessPosition'] = $guessPosition;
         $last['distance'] = $distance;
         $last['score'] = $score;
-        $state['rounds'][count($state['rounds']) - 1] = $last;
+
+        $state['rounds'][$state['currentRound']] = $last;
+        $state['currentRound'] += 1;
 
         $response = [
             'result' => [
@@ -100,15 +88,13 @@ class GameFlowController
             ]
         ];
 
-        if (count($state['rounds']) < static::NUMBER_OF_ROUNDS) {
-            $place = $this->selectNewPlace($state, $mapId);
+        if ($state['currentRound'] < static::NUMBER_OF_ROUNDS) {
+            $next = $state['rounds'][$state['currentRound']];
 
-            $response['newPlace'] = [
-                'panoId' => $place->getPanoIdCached(),
-                'pov' => $place->getPov()->toArray()
+            $response['place'] = [
+                'panoId' => $next['panoId'],
+                'pov' => $next['pov']->toArray()
             ];
-        } else {
-            $state['rounds'] = [];
         }
 
         $session->set('state', $state);
@@ -116,19 +102,23 @@ class GameFlowController
         return new JsonContent($response);
     }
 
-    private function selectNewPlace(array &$state, int $mapId)
+    private function startNewGame(array &$state, int $mapId)
     {
-        $exclude = array_column($state['rounds'], 'placeId');
-        $place = $this->placeRepository->getRandomForMapWithValidPano($mapId, $exclude);
+        $places = $this->placeRepository->getRandomNForMapWithValidPano($mapId, static::NUMBER_OF_ROUNDS);
 
+        $state['rounds'] = [];
+        $state['currentRound'] = 0;
+
+        foreach ($places as $place) {
             $state['rounds'][] = [
                 'placeId' => $place->getId(),
                 'position' => $place->getPosition(),
                 'panoId' => $place->getPanoIdCached(),
                 'pov' => $place->getPov()
             ];
+        }
 
-        return $place;
+        $this->request->session()->set('state', $state);
     }
 
     private function calculateDistance(Position $realPosition, Position $guessPosition): float

src/Repository/PlaceRepository.php

@@ -28,6 +28,21 @@ class PlaceRepository
         yield from $this->pdm->selectMultipleFromDb($select, Place::class);
     }
 
+    //TODO: use Map instead of id
+    public function getRandomNForMapWithValidPano(int $mapId, int $n, array $exclude = []): array
+    {
+        $places = [];
+
+        for ($i = 1; $i <= $n; ++$i) {
+            $place = $this->getRandomForMapWithValidPano($mapId, $exclude);
+
+            $places[] = $place;
+            $exclude[] = $place->getId();
+        }
+
+        return $places;
+    }
+
     //TODO: use Map instead of id
     public function getRandomForMapWithValidPano(int $mapId, array $exclude = []): Place
     {