Feature - extend building queue requirements

app/Http/Controllers/Abstracts/AbstractUnitsController.php

@@ -94,7 +94,7 @@ public function index(Request $request, PlayerService $player, ObjectService $ob
                 $amount = $planet->getObjectAmount($object->machine_name);
 
                 // Check requirements of this building
-                $requirements_met = $objects->objectRequirementsMet($object->machine_name, $planet, $player);
+                $requirements_met = $objects->objectRequirementsMet($object->machine_name, $planet, $player, 0, false);
 
                 // Check if the current planet has enough resources to build this building.
                 $enough_resources = $planet->hasResources($objects->getObjectPrice($object->machine_name, $planet));

app/Services/BuildingQueueService.php

@@ -56,6 +56,23 @@ public function retrieveFinished(int $planet_id): Collection
             ->get();
     }
 
+    /**
+     * Get building queue items
+     *
+     * @return Collection<int, BuildingQueue>
+     */
+    public function retrieveQueueItems(PlanetService $planet): Collection
+    {
+        // Fetch queue items from model
+        return BuildingQueue::where([
+            ['planet_id', $planet->getPlanetId()],
+            ['processed', 0],
+            ['canceled', 0],
+        ])
+            ->orderBy('time_start', 'asc')
+            ->get();
+    }
+
     /**
      * Add a building to the building queue for the current planet.
      *
@@ -67,15 +84,15 @@ public function add(PlanetService $planet, int $building_id): void
     {
         $build_queue = $this->retrieveQueue($planet);
 
-        $building = $this->objects->getObjectById($building_id);
-
         // Max amount of buildings that can be in the queue in a given time.
         // TODO: refactor throw exception into a more user-friendly message.
         if ($build_queue->isQueueFull()) {
             // Max amount of build queue items already exist, throw exception.
             throw new Exception('Maximum number of items already in queue.');
         }
 
+        $building = $this->objects->getObjectById($building_id);
+
         // Check if user satisifes requirements to build this object.
         // TODO: refactor throw exception into a more user-friendly message.
         $requirements_met = $this->objects->objectRequirementsMet($building->machine_name, $planet, $planet->getPlayer());
@@ -113,14 +130,7 @@ public function add(PlanetService $planet, int $building_id): void
      */
     public function retrieveQueue(PlanetService $planet): BuildingQueueListViewModel
     {
-        // Fetch queue items from model
-        $queue_items = BuildingQueue::where([
-            ['planet_id', $planet->getPlanetId()],
-            ['processed', 0],
-            ['canceled', 0],
-        ])
-            ->orderBy('time_start', 'asc')
-            ->get();
+        $queue_items = $this->retrieveQueueItems($planet);
 
         // Convert to ViewModel array
         $list = array();
@@ -231,6 +241,14 @@ public function start(PlanetService $planet, int $time_start = 0): void
                 continue;
             }
 
+            // Sanity check: check if the building requirements are still met. If not,
+            // then cancel build request.
+            if (!$this->objects->objectRequirementsMet($object->machine_name, $planet, $planet->getPlayer(), $queue_item->object_level_target, false)) {
+                $this->cancel($planet, $queue_item->id, $queue_item->object_id);
+
+                continue;
+            }
+
             // All OK, deduct resources and start building process.
             $planet->deductResources($price);
 
@@ -277,26 +295,6 @@ public function cancel(PlanetService $planet, int $building_queue_id, int $build
 
         // If object is found: add canceled flag.
         if ($queue_item) {
-            // Gets all building queue records of this target level and all that
-            // come after it. So e.g. if user cancels build order for metal mine
-            // level 5 then any other already queued build orders for lvl 6,7,8 etc.
-            // will also be canceled.
-            $queue_items_higher_level = BuildingQueue::where([
-                ['planet_id', $planet->getPlanetId()],
-                ['object_id', $building_id],
-                ['object_level_target', '>', $queue_item->object_level_target],
-                ['processed', 0],
-                ['canceled', 0],
-            ])->get();
-
-            // Add canceled flag to all entries with a higher level (if any).
-            foreach ($queue_items_higher_level as $queue_item_higher_level) {
-                $queue_item_higher_level->building = 0;
-                $queue_item_higher_level->canceled = 1;
-
-                $queue_item_higher_level->save();
-            }
-
             // Give back resources if the current entry was already building.
             if ($queue_item->building === 1) {
                 $planet->addResources(new Resources($queue_item->metal, $queue_item->crystal, $queue_item->deuterium, 0));
@@ -308,8 +306,62 @@ public function cancel(PlanetService $planet, int $building_queue_id, int $build
 
             $queue_item->save();
 
+            // Check if requirements for all other items in the queue are still met.
+            // So e.g. if user cancels build order for metal mine
+            // level 5 then any other already queued build orders for lvl 6,7,8 etc.
+            // will also be canceled. Same applies to building requirements,
+            // if user cancels build order for robotics factory which is requirement
+            // for shipyard then shipyard will also be canceled.
+            // Requirements are checked only for building queue objects as
+            // unit queue objects cannot be canceled.
+            $this->cancelItemMissingRequirements($planet);
+
+            $research_queue = resolve('OGame\Services\ResearchQueueService');
+            $research_queue->cancelItemMissingRequirements($planet->getPlayer(), $planet);
+
             // Set the next queue item to start (if applicable)
             $this->start($planet);
         }
     }
+
+    /**
+     * Get is object in building queue
+     *
+     * @return bool
+     */
+    public function objectInBuildingQueue(PlanetService $planet, string $machine_name, int $level): bool
+    {
+        $queue_items = $this->retrieveQueueItems($planet);
+
+        foreach ($queue_items as $item) {
+            $object = $this->objects->getObjectById($item->object_id);
+
+            if ($object->machine_name === $machine_name && $item->object_level_target === $level) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Cancel first building queue item missing requirements.
+     * This function will be called recursively when it cancels the item.
+     *
+     * @return void
+     */
+    public function cancelItemMissingRequirements(PlanetService $planet): void
+    {
+        $build_queue_items = $this->retrieveQueueItems($planet);
+
+        foreach ($build_queue_items as $build_queue_item) {
+            $object = $this->objects->getObjectById($build_queue_item->object_id);
+
+            if (!$this->objects->objectRequirementsMet($object->machine_name, $planet, $planet->getPlayer(), $build_queue_item->object_level_target)) {
+                $this->cancel($planet, $build_queue_item->id, $object->id);
+                break;
+            }
+
+        }
+    }
 }

app/Services/ObjectService.php

@@ -329,21 +329,41 @@ public function getBuildingObjectsWithStorage(): array
      * @param string $machine_name
      * @param PlanetService $planet
      * @param PlayerService $player
+     * @param int $level
+     * @param bool $queued
      * @return bool
      */
-    public function objectRequirementsMet(string $machine_name, PlanetService $planet, PlayerService $player): bool
+    public function objectRequirementsMet(string $machine_name, PlanetService $planet, PlayerService $player, int $level = 0, bool $queued = true): bool
     {
         try {
             $object = $this->getObjectByMachineName($machine_name);
+
+            // Check required prior levels
+            if ($level) {
+                if (!$this->objectLevelsMet($object, $planet, $player, $level, $queued)) {
+                    return false;
+                }
+            }
+
             foreach ($object->requirements as $requirement) {
                 // Load required object and check if requirements are met.
                 $object_required = $this->getObjectByMachineName($requirement->object_machine_name);
+                $check_queue = $queued;
+
+                // Skip queue check for research lab as it must be present for research objects
+                if ($object_required->machine_name === 'research_lab') {
+                    $check_queue = false;
+                }
+
                 if ($object_required->type === GameObjectType::Research) {
-                    if ($player->getResearchLevel($object_required->machine_name) < $requirement->level) {
+                    // Check if requirements are met with existing technology or with research items in build queue.
+                    if ($player->getResearchLevel($object_required->machine_name) < $requirement->level && (!$check_queue || !$player->isResearchingTech($requirement->object_machine_name, $requirement->level))) {
                         return false;
                     }
                 } else {
-                    if ($planet->getObjectLevel($object_required->machine_name) < $requirement->level) {
+                    // Check if requirements are met with existing buildings or with buildings in build queue.
+                    // Building queue is checked only for building queue objects, not for unit queue objects.
+                    if ($planet->getObjectLevel($object_required->machine_name) < $requirement->level && (!$check_queue || !$planet->isBuildingObject($requirement->object_machine_name, $requirement->level))) {
                         return false;
                     }
                 }
@@ -486,4 +506,46 @@ public function getObjectRawPrice(string $machine_name, int $level = 0): Resourc
 
         return new Resources($metal, $crystal, $deuterium, $energy);
     }
+
+    /**
+     * Check if object prior level requirements are met (for building it).
+     * Prior levels can be already built or in queues
+     *
+     * @param GameObject $object
+     * @param PlanetService $planet
+     * @param PlayerService $player
+     * @param int $level
+     * @param bool $queued
+     * @return bool
+     */
+    private function objectLevelsMet(GameObject $object, PlanetService $planet, PlayerService $player, int $level, bool $queued): bool
+    {
+        $current_level = 0;
+
+        if ($object->type === GameObjectType::Research) {
+            $current_level = $planet->getPlayer()->getResearchLevel($object->machine_name);
+        } else {
+            $current_level = $planet->getObjectLevel($object->machine_name);
+        }
+
+        // Check if target level is next level
+        if ($current_level + 1 === $level) {
+            return true;
+        }
+
+        // Check if items in queues should be included or not
+        if (!$queued) {
+            // There are prior levels, but queue should not be included
+            return false;
+        }
+
+        // Check prior levels from queues
+        for ($i = $current_level + 1; $i < $level; $i++) {
+            if (!$planet->isBuildingObject($object->machine_name, $i) && !$player->isResearchingTech($object->machine_name, $i)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
 }

app/Services/PlanetService.php

@@ -1459,6 +1459,24 @@ public function isBuilding(): bool
         return count($build_queue) > 0;
     }
 
+    /**
+     * Get is the current planet building the object or not
+     *
+     * @return bool
+     */
+    public function isBuildingObject(string $machine_name, int $level): bool
+    {
+        $object = $this->objects->getObjectByMachineName($machine_name);
+
+        // Check only building queue objects
+        if ($object->type !== GameObjectType::Building && $object->type !== GameObjectType::Station) {
+            return false;
+        }
+
+        $build_queue = resolve(BuildingQueueService::class);
+        return $build_queue->objectInBuildingQueue($this, $machine_name, $level);
+    }
+
     /**
      * Get building count from planet
      *

app/Services/PlayerService.php

@@ -572,4 +572,15 @@ public function delete(): void
         // Delete the actual user.
         $this->user->delete();
     }
+
+    /**
+     * Get is the player researching the tech or not
+     *
+     * @return bool
+     */
+    public function isResearchingTech(string $machine_name, int $level): bool
+    {
+        $research_queue = resolve('OGame\Services\ResearchQueueService');
+        return $research_queue->objectInResearchQueue($this, $machine_name, $level);
+    }
 }