feat(player): limit bullets

assets/scenes/menu.json

@@ -84,6 +84,7 @@
         },
         {
           "name": "PlayerController",
+          "bullet_clip": 2,
           "speed": 100
         },
         {

include/components/PlayerController.h

@@ -8,12 +8,13 @@ class Transform;
 class PhysicsBody;
 
 class PlayerController final : public Component {
+  uint8_t bulletClip_;
   uint8_t speed_;
   std::shared_ptr<PhysicsBody> physicsBody_;
   std::weak_ptr<GameObject> bullets_;
 
  public:
-  PlayerController(std::weak_ptr<GameObject> gameObject,
+  PlayerController(std::weak_ptr<GameObject> gameObject, uint8_t bulletClip,
                    uint8_t speed) noexcept;
   ~PlayerController() noexcept override;
   void onAwake() noexcept override;
@@ -25,4 +26,9 @@ class PlayerController final : public Component {
 
   [[nodiscard]] inline const uint8_t& speed() const noexcept { return speed_; }
   inline uint8_t& speed() noexcept { return speed_; }
+
+  [[nodiscard]] inline const uint8_t& bulletClip() const noexcept {
+    return bulletClip_;
+  }
+  inline uint8_t& bulletClip() noexcept { return bulletClip_; }
 };

src/components/PlayerController.cpp

@@ -14,8 +14,10 @@
 #include "scenes/Scene.h"
 
 PlayerController::PlayerController(std::weak_ptr<GameObject> gameObject,
-                                   uint8_t speed) noexcept
-    : Component(std::move(gameObject)), speed_(speed) {}
+                                   uint8_t bulletClip, uint8_t speed) noexcept
+    : Component(std::move(gameObject)),
+      bulletClip_(bulletClip),
+      speed_(speed) {}
 
 PlayerController::~PlayerController() noexcept = default;
 
@@ -56,7 +58,9 @@ void PlayerController::onUpdate() noexcept {
     physicsBody_->body()->SetLinearVelocity(translation.toVec());
   }
 
-  if (Input::keyDown(KeyboardKey::SPACE)) {
+  if (bulletClip_ && Input::keyDown(KeyboardKey::SPACE)) {
+    --bulletClip_;
+
     const auto transform = gameObject().lock()->transform().lock();
 
     const auto& sp = transform->scale().cast<float>() / 2.f;

src/factories/PhysicsBodyFactory.cpp

@@ -10,6 +10,7 @@ PhysicsBodyFactory::~PhysicsBodyFactory() noexcept = default;
 //   "name": "PhysicsBody",
 //   "type": "static",
 //   "sensor": false,
+//   "density": 18.5,
 //   "restitution": 0.6,
 //   "data": [400, 400, 100, 100],
 //   "category": ["player"],

src/factories/PlayerControllerFactory.cpp

@@ -8,13 +8,15 @@ PlayerControllerFactory::~PlayerControllerFactory() noexcept = default;
 std::shared_ptr<PlayerController> PlayerControllerFactory::fromJson(
     const Json::Value& json, std::weak_ptr<GameObject> parent) {
   return std::make_shared<PlayerController>(
-      parent, static_cast<uint8_t>(json["speed"].asUInt()));
+      parent, static_cast<uint8_t>(json["bullet_clip"].asUInt()),
+      static_cast<uint8_t>(json["speed"].asUInt()));
 }
 
 Json::Value PlayerControllerFactory::toJson(
     std::shared_ptr<PlayerController> value) const {
   Json::Value json(Json::objectValue);
   json["name"] = name();
+  json["bullet_clip"] = value->bulletClip();
   json["speed"] = value->speed();
   return json;
 }

src/listeners/ContactListener.cpp

@@ -2,6 +2,7 @@
 #include "listeners/ContactListener.h"
 
 #include "components/PhysicsBody.h"
+#include "components/PlayerController.h"
 #include "objects/GameObject.h"
 #include "utils/DebugAssert.h"
 
@@ -19,8 +20,21 @@ void ContactListener::BeginContact(b2Contact* contact) {
               a->gameObject().lock()->name().c_str(), ac,
               b->gameObject().lock()->name().c_str(), bc, collectible);
 
-  if (ac) a->destroy();
-  if (bc) b->destroy();
+  if (ac) {
+    a->destroy();
+    auto gb = b->gameObject().lock();
+    if (gb->name() == "Player") {
+      gb->getComponent<PlayerController>()->bulletClip()++;
+    }
+  }
+
+  if (bc) {
+    b->destroy();
+    auto ga = a->gameObject().lock();
+    if (ga->name() == "Player") {
+      ga->getComponent<PlayerController>()->bulletClip()++;
+    }
+  }
 }
 
 void ContactListener::EndContact(b2Contact* contact) {