Added cycle weapons command and the ability to hold more than one weapon.

YuppleMayham/include/gameplay/ai.h

@@ -14,7 +14,7 @@ enum class AIState {
 	Patrol
 };
 
-class AI {
+class AI : public std::enable_shared_from_this<AI> {
 public:
 	AI(const std::shared_ptr<GameActor>& actor, const std::shared_ptr<Raycaster>& raycaster);
 	void update();
@@ -30,7 +30,7 @@ public:
 private:
 	AIState						state;
 	std::shared_ptr<Raycaster>	raycaster;
-	std::shared_ptr<AIScript>		behaviour;
+	std::shared_ptr<AIScript>	behaviour;
 	std::shared_ptr<GameActor>	actor;
 	std::shared_ptr<GameActor>	target;
 };

YuppleMayham/include/gameplay/entity.h

@@ -9,7 +9,8 @@
 
 class Camera;
 struct PhysicsComponent;
-
+// TODO: Allow speed to be changed and add speed as creation value in XML File!
+// TODO: Create Entity System that loads entity types and creates them in scene according to name.
 class Entity
 {
 public:
@@ -18,7 +19,7 @@ public:
 		position(glm::vec3(0.0f)),
 		scale(glm::vec3(1.0f)),
 		rotation(0.0f),
-		speed(5.0f) {};
+		speed(20.0f) {};
 	virtual ~Entity() {};
 
 	void setPosition(const glm::vec3& position);

YuppleMayham/include/gameplay/gameactor.h

@@ -3,6 +3,7 @@
 
 #include <unordered_map>
 #include <SDL_timer.h>
+#include <optional>
 
 #include "gameplay/entity.h"
 #include "utility/mousestate.h"
@@ -12,6 +13,9 @@ class AI;
 class Weapon;
 class EventManager;
 
+// TODO: Finish weapon cycling code and add default weapon to every actor
+// TODO: Add ammo system, then work on some basic UI design
+
 class GameActor : public Entity
 {
 public:
@@ -19,12 +23,12 @@ public:
 	~GameActor();
 
 	void addComponent(std::shared_ptr<Component> component);
-	void equipWeapon(std::shared_ptr<Weapon> weapon);
-	void attachEventManager(std::shared_ptr<EventManager> eventManager);
+	void pickupWeapon(std::shared_ptr<Weapon> weapon);
+	void hookEventManager(std::shared_ptr<EventManager> eventManager);
 	void update(float deltaTime) override;
 	void render(const std::shared_ptr<Camera>& camera) override;
 
-	const std::shared_ptr<Weapon>& getHeldWeapon() const;
+	const std::optional<std::shared_ptr<Weapon>>& getHeldWeapon() const;
 	const int getActorID() const { return actorid; }
 
 	void setRotation(const float& rotation) override;
@@ -39,13 +43,19 @@ public:
 	void moveBackward();
 	void strafeLeft();
 	void strafeRight();
-	void fireWeapon();
+	void fireWeapon() const;
+	void cycleUpWeapons();
+	void cycleDownWeapons();
+	void cycleWeapons(const MouseState&);
 	void followMouse(const MouseState&);
 private:
+	using component_vector_t = std::vector<std::shared_ptr<Component>>;
+	using weapon_vector_t = std::vector<std::shared_ptr<Weapon>>;
+
 	int actorid;
-	std::vector<std::shared_ptr<Component>> components;
-	std::shared_ptr<AI> ai;
-	std::shared_ptr<Weapon> currentWeapon = nullptr;
+	component_vector_t components;
+	weapon_vector_t weapons;
+	size_t currentWeaponIndex = 0;
 	std::shared_ptr<EventManager> eventManager;
 };
 

YuppleMayham/include/gameplay/input.h

@@ -15,7 +15,8 @@ enum {
 	MOUSE_BUTTON_LEFT = 1,
 	MOUSE_BUTTON_RIGHT = 2,
 	MOUSE_BUTTON_MIDDLE = 4,
-	MOUSE_MOTION = 8
+	MOUSE_MOTION = 8,
+	MOUSE_SCROLL = 16
 };
 
 class Keyboard
@@ -49,6 +50,8 @@ protected:
 			mouse_state.x = static_cast<float>(e.motion.x);
 			mouse_state.y = static_cast<float>(e.motion.y);
 		}
+		if (e.type == SDL_MOUSEWHEEL)
+			mouse_state.scroll = e.wheel.preciseY;
 	}
 	MouseState mouse_state;
 	std::unordered_map<Uint8, bool> mouseButtons;
@@ -85,14 +88,17 @@ public:
 	void bindMouseMotion(MouseCommand* command) {
 		mouseMotionCommand = command;
 	}
+	void bindMouseScroll(MouseCommand* command) {
+		mouseScrollCommand = command;
+	}
 	void handleInput();
 
 private:
 	GameActor* actor = nullptr;
-	// final int is delay
 	std::unordered_map<SDL_Keycode, CommandWithDelay> keyCommands;
 	std::unordered_map<Uint8, MouseCommandWithDelay> mouseCommands;
 	MouseCommand* mouseMotionCommand = nullptr;
+	MouseCommand* mouseScrollCommand = nullptr;
 };
 
 #endif // _H_INPUT_H

YuppleMayham/include/gameplay/weapons/weapon.h

@@ -30,6 +30,8 @@ public:
 	Weapon(const WeaponData* data, const std::shared_ptr<Shader>& weaponShader, const std::shared_ptr<Shader>& bulletShader, ResourceManager* resourceManager);
 
 	void setWielder(const std::shared_ptr<GameActor>& wielder) { this->wielder = wielder; }
+	void wield() { wielded = true; }
+	void putaway() { wielded = false; }
 
 	void addComponent(const std::shared_ptr<Component>& component);
 	void attachScript(const std::shared_ptr<WeaponScript>& script);
@@ -79,6 +81,8 @@ private:
 	std::shared_ptr<UTIL::RandomGenerator> bulletModifer;
 
 	std::shared_ptr<GameActor> wielder;
+	// is the weapon currently active
+	bool wielded = false;
 	int lastFireTime = 0;
 
 	Direction lastDir;

YuppleMayham/include/utility/command.h

@@ -86,6 +86,27 @@ public:
 	void execute(GameActor& actor) override;
 };
 
+class CycleUpCommand : public Command
+{
+public:
+	CycleUpCommand() {}
+	void execute(GameActor& actor) override;
+};
+
+class CycleDownCommand : public Command
+{
+public:
+	CycleDownCommand() {}
+	void execute(GameActor& actor) override;
+};
+
+class CycleCommand : public MouseCommand
+{
+public:
+	CycleCommand() {}
+	void execute(GameActor& actor, const MouseState& mouse_state) override;
+};
+
 class ShootCommand : public MouseCommand
 {
 public:

YuppleMayham/include/utility/mousestate.h

@@ -4,6 +4,8 @@
 struct MouseState {
 	float x = 0.0f;
 	float y = 0.0f;
+
+	float scroll = 0.0f;
 };
 
 #endif

YuppleMayham/src/gameplay/ai.cpp

@@ -11,11 +11,11 @@ AI::AI(const std::shared_ptr<GameActor>& actor, const std::shared_ptr<Raycaster>
 
 void AI::attachBehaviourScript(const std::shared_ptr<AIScript>& behaviour)
 {
-	// passing out instance of raycaster this Ai into our scripting api
+	// passing out instance of raycaster and this AI into our scripting api
 	// pay special attention each ai script has control of only their own instance of ai!
 	this->behaviour = behaviour;
 	this->behaviour->lua["raycaster"] = raycaster;
-	this->behaviour->lua["ai"] = std::shared_ptr<AI>(this);
+	this->behaviour->lua["ai"] = shared_from_this();
 }
 
 void AI::update()

YuppleMayham/src/gameplay/game.cpp

@@ -41,6 +41,7 @@ bool Game::init()
 
 	inputHandler->bindMouseCommand(MOUSE_BUTTON_LEFT, 100, new ShootCommand());
 	inputHandler->bindMouseMotion(new FollowMouseCommand());
+	inputHandler->bindMouseScroll(new CycleCommand());
 
 	game_state |= GAME_RUNNING;
 	resourceManager = std::make_shared<ResourceManager>();

YuppleMayham/src/gameplay/gameactor.cpp

@@ -14,21 +14,25 @@ void GameActor::addComponent(std::shared_ptr<Component> component)
 	components.push_back(component);
 }
 
-const std::shared_ptr<Weapon>& GameActor::getHeldWeapon() const
+const std::optional<std::shared_ptr<Weapon>>& GameActor::getHeldWeapon() const
 {
-	return currentWeapon;
+	return (weapons.empty() || currentWeaponIndex >= weapons.size()) ? std::nullopt : std::make_optional(weapons[currentWeaponIndex]);
 }
 
-void GameActor::equipWeapon(std::shared_ptr<Weapon> weapon)
+void GameActor::pickupWeapon(std::shared_ptr<Weapon> weapon)
 {
-	currentWeapon = std::move(weapon);
-	if (currentWeapon)
-		currentWeapon->setWielder(std::shared_ptr<GameActor>(this));
+	weapon->setWielder(std::shared_ptr<GameActor>(this));
+	weapons.push_back(weapon);
+	getHeldWeapon().value()->putaway();
+	currentWeaponIndex = weapons.size() - 1;
+	getHeldWeapon().value()->wield();
 }
 
-void GameActor::attachEventManager(std::shared_ptr<EventManager> eventManager)
+void GameActor::hookEventManager(std::shared_ptr<EventManager> eventManager)
 {
 	this->eventManager = eventManager;
+	for (auto& weapon : weapons)
+		weapon->hookEventManager(eventManager);
 }
 
 void GameActor::setRotation(const float& rotation) 
@@ -48,8 +52,8 @@ void GameActor::update(float deltaTime)
 
 	for (auto& component : components)
 		component->update();
-	if (currentWeapon)
-		currentWeapon->update(deltaTime);
+	for (auto& weapon : weapons)
+		weapon->update(deltaTime);
 }
 
 void GameActor::render(const std::shared_ptr<Camera>& camera)
@@ -65,8 +69,8 @@ void GameActor::render(const std::shared_ptr<Camera>& camera)
 		component->bind();
 		component->render();
 	}
-	if (currentWeapon)
-		currentWeapon->render(camera);
+	for (auto& weapon : weapons)
+		weapon->render(camera);
 	isMoving = false;
 }
 
@@ -76,11 +80,28 @@ void GameActor::moveLeft() { if (physics) physics->rigidBody.applyForce(glm::vec
 void GameActor::moveRight(){ if (physics) physics->rigidBody.applyForce(glm::vec3( 1.f, 0.f, 0.f), 1500.25f); isMoving = true; }
 
 // top-down shooter mode controls
-void GameActor::strafeLeft()	 { position.x += sin(glm::radians(rotation)) * speed; position.y -=  cos(glm::radians(rotation)) * speed; }
-void GameActor::strafeRight()	 { position.x -= sin(glm::radians(rotation)) * speed; position.y +=  cos(glm::radians(rotation)) * speed; }
-void GameActor::moveBackward()   { position.x -= cos(glm::radians(rotation)) * speed; position.y -=  sin(glm::radians(rotation)) * speed; }
-void GameActor::moveForward()	 { if (physics) physics->rigidBody.applyForce(glm::vec3(cos(glm::radians(rotation)), sin(glm::radians(rotation)), 0.f), 1000.f); isMoving = true; }
-void GameActor::fireWeapon()	 { if (currentWeapon) currentWeapon->shoot(); }
+void GameActor::fireWeapon()const	{ if (auto& weapon = getHeldWeapon()) weapon.value()->shoot(); }
+void GameActor::cycleUpWeapons() { 
+	if (!weapons.empty()) { 
+		weapons[currentWeaponIndex]->putaway();
+		currentWeaponIndex = (currentWeaponIndex + 1) % weapons.size();
+		weapons[currentWeaponIndex]->wield();
+	} 
+}
+void GameActor::cycleDownWeapons() {
+	if (!weapons.empty()) {
+		weapons[currentWeaponIndex]->putaway();
+		currentWeaponIndex = (currentWeaponIndex + weapons.size() - 1) % weapons.size();
+		weapons[currentWeaponIndex]->wield();
+	}
+}
+void GameActor::cycleWeapons(const MouseState& mouse_state)
+{
+	if (mouse_state.scroll < 0)
+		cycleUpWeapons();
+	else if (mouse_state.scroll > 0)
+		cycleDownWeapons();
+}
 void GameActor::followMouse(const MouseState& mouse_state) 
 { 
 	glm::vec2 direction = glm::vec2(mouse_state.x, mouse_state.y) - glm::vec2(localPosition.x + 0.5f * scale.x, localPosition.y + 0.5f * scale.y);
@@ -91,3 +112,13 @@ void GameActor::followMouse(const MouseState& mouse_state)
 	//setRotation(glm::degrees(glm::atan(direction.y, direction.x))); 
 	this->rotation = newRotation;
 }
+void GameActor::strafeLeft()		{ position.x += sin(glm::radians(rotation)) * speed; position.y -=  cos(glm::radians(rotation)) * speed; }
+void GameActor::strafeRight()		{ position.x -= sin(glm::radians(rotation)) * speed; position.y +=  cos(glm::radians(rotation)) * speed; }
+void GameActor::moveBackward()		{ position.x -= cos(glm::radians(rotation)) * speed; position.y -=  sin(glm::radians(rotation)) * speed; }
+void GameActor::moveForward() { 
+	if (physics) {
+		physics->rigidBody.velocity.x += cos(glm::radians(rotation)) * speed;
+		physics->rigidBody.velocity.y += sin(glm::radians(rotation)) * speed;
+	}
+	isMoving = true; 
+}

YuppleMayham/src/gameplay/input.cpp

@@ -34,6 +34,9 @@ void InputHandler::handleInput()
 			}
 		}
 	}
-	if (!mouseMotionCommand) return;
-	mouseMotionCommand->execute(*actor, mouse_state);
+	if (mouseMotionCommand)
+		mouseMotionCommand->execute(*actor, mouse_state);
+	if (mouseScrollCommand)
+		mouseScrollCommand->execute(*actor, mouse_state);
+	mouse_state.scroll = 0.0f; // clear mouse scroll since we have handled the event.
 }

YuppleMayham/src/gameplay/scene.cpp

@@ -16,6 +16,8 @@
 #include "utility/raycaster.h"
 #include "utility/debugdraw.h"
 
+#include <execution>
+
 // Scene xml files, should contain a node called <player> that holds the sprite location
 /*
 like this:
@@ -67,12 +69,13 @@ void Scene::loadDebugShooterScene()
 		}
 		else
 			entitySprite = resourceManager->loadSpriteAnimated(entityData.sprite, entityData.frameSize);
+		auto defaultWeapon = resourceManager->loadWeapon("pistolGun", weaponShader, bubbleShader);
 		auto entityWeapon = resourceManager->loadWeapon(entityData.weapon, weaponShader, bubbleShader);
 
-		entityWeapon->hookEventManager(eventManager);
 		entity->addComponent(std::make_shared<SpriteComponent>(entitySprite, eventManager));
-		entity->equipWeapon(entityWeapon);
-		entity->attachEventManager(eventManager);
+		entity->pickupWeapon(defaultWeapon);
+		entity->pickupWeapon(entityWeapon);
+		entity->hookEventManager(eventManager);
 		entity->setPosition(glm::vec3(entityData.x * mapData.tileSize, entityData.y * mapData.tileSize, 0.f));
 		entity->setScale(glm::vec3(mapData.tileSize, mapData.tileSize, 1.f));
 
@@ -119,7 +122,7 @@ std::shared_ptr<GameActor> Scene::getPlayer() const
 
 void Scene::update(float deltaTime)
 {
-	for (auto& [id, e] : entities)
+	for (const auto& [id, e] : entities)
 	{
 		e->update(deltaTime);
 		if (camera->getTarget() == e.get())
@@ -151,7 +154,8 @@ void Scene::hookSceneEvents()
 		std::shared_ptr<GameActor> shooter = getGameActorByID(collideEvent->ownerID);
 		std::shared_ptr<GameActor> target  = getGameActorByID(collideEvent->victimID);
 		if (shooter && target)
-			shooter->getHeldWeapon()->onHitCallback(target, collideEvent->bullet, collideEvent->normal);
+			if (auto& weapon = shooter->getHeldWeapon())
+				weapon.value()->onHitCallback(target, collideEvent->bullet, collideEvent->normal);
 	});
 }
 

YuppleMayham/src/gameplay/weapons/weapon.cpp

@@ -102,22 +102,28 @@ void Weapon::onHitCallback(std::shared_ptr<GameActor> target, std::shared_ptr<Ph
 void Weapon::update(float deltaTime)
 {
 	Entity::update(deltaTime);
-	// move the weapon into place as the wielder rotates and moves
-	if (wielder)
-		adjustWeapon();
+	if (wielded)
+	{
+		// move the weapon into place as the wielder rotates and moves
+		if (wielder)
+			adjustWeapon();
 
-	for (auto& component : components)
-		component->update();
+		for (auto& component : components)
+			component->update();
+	}
 	bulletManager->update(deltaTime);
 }
 
 void Weapon::render(const std::shared_ptr<Camera>& camera)
 {
 	Entity::render(camera);
-	for (auto& component : components)
+	if (wielded)
 	{
-		component->bind();
-		component->render();
+		for (auto& component : components)
+		{
+			component->bind();
+			component->render();
+		}
 	}
 	bulletManager->render(camera);
 }

YuppleMayham/src/utility/command.cpp

@@ -11,6 +11,9 @@ void MoveForwardCommand::execute(GameActor& actor) { actor.moveForward(); }
 void MoveBackwardCommand::execute(GameActor& actor) { actor.moveBackward(); }
 void StrafeLeftCommand::execute(GameActor& actor) { actor.strafeLeft(); }
 void StrafeRightCommand::execute(GameActor& actor) { actor.strafeRight(); }
-void ShootCommand::execute(GameActor& actor, const MouseState& mouse_state) { actor.fireWeapon(); }
+void CycleUpCommand::execute(GameActor& actor) { actor.cycleUpWeapons(); }
+void CycleDownCommand::execute(GameActor& actor) { actor.cycleDownWeapons(); }
 
+void ShootCommand::execute(GameActor& actor, const MouseState& mouse_state) { actor.fireWeapon(); }
+void CycleCommand::execute(GameActor& actor, const MouseState& mouse_state) { actor.cycleWeapons(mouse_state); }
 void FollowMouseCommand::execute(GameActor& actor, const MouseState& mouse_state) { actor.followMouse(mouse_state); }