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‎Chapter07/Actor.cpp‎

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// ----------------------------------------------------------------
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// From Game Programming in C++ by Sanjay Madhav
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// Copyright (C) 2017 Sanjay Madhav. All rights reserved.
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//
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// Released under the BSD License
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// See LICENSE in root directory for full details.
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// ----------------------------------------------------------------
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#include "Actor.h"
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#include "Game.h"
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#include "Component.h"
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#include <algorithm>
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Actor::Actor(Game* game)
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:mState(EActive)
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,mPosition(Vector3::Zero)
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,mRotation(Quaternion::Identity)
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,mScale(1.0f)
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,mGame(game)
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,mRecomputeWorldTransform(true)
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{
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mGame->AddActor(this);
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}
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Actor::~Actor()
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{
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mGame->RemoveActor(this);
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// Need to delete components
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// Because ~Component calls RemoveComponent, need a different style loop
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while (!mComponents.empty())
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{
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delete mComponents.back();
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}
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}
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void Actor::Update(float deltaTime)
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{
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if (mState == EActive)
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{
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ComputeWorldTransform();
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UpdateComponents(deltaTime);
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UpdateActor(deltaTime);
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ComputeWorldTransform();
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}
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}
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void Actor::UpdateComponents(float deltaTime)
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{
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for (auto comp : mComponents)
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{
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comp->Update(deltaTime);
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}
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}
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void Actor::UpdateActor(float deltaTime)
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{
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}
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void Actor::ProcessInput(const uint8_t* keyState)
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{
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if (mState == EActive)
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{
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// First process input for components
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for (auto comp : mComponents)
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{
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comp->ProcessInput(keyState);
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}
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ActorInput(keyState);
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}
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}
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void Actor::ActorInput(const uint8_t* keyState)
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{
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}
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void Actor::ComputeWorldTransform()
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{
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if (mRecomputeWorldTransform)
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{
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mRecomputeWorldTransform = false;
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// Scale, then rotate, then translate
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mWorldTransform = Matrix4::CreateScale(mScale);
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mWorldTransform *= Matrix4::CreateFromQuaternion(mRotation);
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mWorldTransform *= Matrix4::CreateTranslation(mPosition);
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// Inform components world transform updated
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for (auto comp : mComponents)
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{
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comp->OnUpdateWorldTransform();
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}
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}
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}
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void Actor::AddComponent(Component* component)
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{
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// Find the insertion point in the sorted vector
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// (The first element with a order higher than me)
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int myOrder = component->GetUpdateOrder();
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auto iter = mComponents.begin();
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for (;
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iter != mComponents.end();
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++iter)
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{
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if (myOrder < (*iter)->GetUpdateOrder())
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{
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break;
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}
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}
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// Inserts element before position of iterator
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mComponents.insert(iter, component);
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}
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void Actor::RemoveComponent(Component* component)
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{
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auto iter = std::find(mComponents.begin(), mComponents.end(), component);
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if (iter != mComponents.end())
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{
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mComponents.erase(iter);
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}
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}

‎Chapter07/Actor.h‎

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// ----------------------------------------------------------------
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// From Game Programming in C++ by Sanjay Madhav
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// Copyright (C) 2017 Sanjay Madhav. All rights reserved.
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//
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// Released under the BSD License
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// See LICENSE in root directory for full details.
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// ----------------------------------------------------------------
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#pragma once
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#include <vector>
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#include "Math.h"
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#include <cstdint>
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class Actor
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{
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public:
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enum State
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{
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EActive,
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EPaused,
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EDead
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};
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Actor(class Game* game);
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virtual ~Actor();
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// Update function called from Game (not overridable)
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void Update(float deltaTime);
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// Updates all the components attached to the actor (not overridable)
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void UpdateComponents(float deltaTime);
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// Any actor-specific update code (overridable)
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virtual void UpdateActor(float deltaTime);
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// ProcessInput function called from Game (not overridable)
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void ProcessInput(const uint8_t* keyState);
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// Any actor-specific input code (overridable)
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virtual void ActorInput(const uint8_t* keyState);
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// Getters/setters
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const Vector3& GetPosition() const { return mPosition; }
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void SetPosition(const Vector3& pos) { mPosition = pos; mRecomputeWorldTransform = true; }
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float GetScale() const { return mScale; }
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void SetScale(float scale) { mScale = scale; mRecomputeWorldTransform = true; }
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const Quaternion& GetRotation() const { return mRotation; }
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void SetRotation(const Quaternion& rotation) { mRotation = rotation; mRecomputeWorldTransform = true; }
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void ComputeWorldTransform();
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const Matrix4& GetWorldTransform() const { return mWorldTransform; }
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Vector3 GetForward() const { return Vector3::Transform(Vector3::UnitX, mRotation); }
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State GetState() const { return mState; }
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void SetState(State state) { mState = state; }
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class Game* GetGame() { return mGame; }
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// Add/remove components
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void AddComponent(class Component* component);
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void RemoveComponent(class Component* component);
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private:
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// Actor's state
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State mState;
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// Transform
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Matrix4 mWorldTransform;
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Vector3 mPosition;
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Quaternion mRotation;
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float mScale;
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bool mRecomputeWorldTransform;
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std::vector<class Component*> mComponents;
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class Game* mGame;
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};

‎Chapter07/Assets/Cube.gpmesh‎

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{
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"version":1,
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"vertexformat":"PosNormTex",
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"shader":"BasicMesh",
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"textures":[
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"Assets/Cube.png"
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],
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"vertices":[
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[-0.5,-0.5,-0.5,0,0,-1,0,0],
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[0.5,-0.5,-0.5,0,0,-1,1,0],
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[-0.5,0.5,-0.5,0,0,-1,0,-1],
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[0.5,0.5,-0.5,0,0,-1,1,-1],
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[-0.5,0.5,0.5,0,1,0,0,-1],
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[0.5,0.5,0.5,0,1,0,1,-1],
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[-0.5,-0.5,0.5,0,0,1,0,0],
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[0.5,-0.5,0.5,0,0,1,1,0],
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[-0.5,0.5,-0.5,0,0,-1,0,-1],
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[0.5,-0.5,-0.5,0,0,-1,1,0],
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[-0.5,0.5,-0.5,0,1,0,0,-1],
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[0.5,0.5,-0.5,0,1,0,1,-1],
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[-0.5,0.5,0.5,0,1,0,0,-1],
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[-0.5,0.5,0.5,0,0,1,0,-1],
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[0.5,0.5,0.5,0,0,1,1,-1],
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[-0.5,-0.5,0.5,0,0,1,0,0],
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[-0.5,-0.5,0.5,0,-1,0,0,0],
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[0.5,-0.5,0.5,0,-1,0,1,0],
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[-0.5,-0.5,-0.5,0,-1,0,0,0],
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[0.5,-0.5,-0.5,0,-1,0,1,0],
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[0.5,-0.5,-0.5,1,0,0,1,0],
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[0.5,-0.5,0.5,1,0,0,1,0],
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[0.5,0.5,-0.5,1,0,0,1,-1],
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[0.5,0.5,0.5,1,0,0,1,-1],
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[-0.5,-0.5,0.5,-1,0,0,0,0],
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[-0.5,-0.5,-0.5,-1,0,0,0,0],
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[-0.5,0.5,0.5,-1,0,0,0,-1],
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[-0.5,0.5,-0.5,-1,0,0,0,-1]
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],
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"indices":[
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[2,1,0],
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[3,9,8],
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[4,11,10],
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[5,11,12],
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[6,14,13],
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[7,14,15],
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[18,17,16],
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[19,17,18],
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[22,21,20],
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[23,21,22],
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[26,25,24],
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[27,25,26]
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]
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}

‎Chapter07/Assets/Cube.png‎

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‎Chapter07/Assets/Default.png‎

1.53 KB
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‎Chapter07/Assets/HealthBar.png‎

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‎Chapter07/Assets/Master Bank.bank‎

2.94 MB
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‎Chapter07/Assets/Master Bank.strings.bank‎

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‎Chapter07/Assets/Plane.gpmesh‎

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{
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"version":1,
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"vertexformat":"PosNormTex",
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"shader":"BasicMesh",
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"textures":[
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"Assets/Plane.png"
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],
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"vertices":[
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[50.000000,50.000000,-0.000000,-0.003922,-0.003922,1.000000,1.000000,1.000000],
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[50.000000,25.000000,-0.000000,-0.003922,-0.003922,1.000000,1.000000,0.750000],
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[25.000000,50.000000,-0.000000,-0.003922,-0.003922,1.000000,0.750000,1.000000],
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[25.000000,25.000000,-0.000000,-0.003922,-0.003922,1.000000,0.750000,0.750000],
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[0.000000,50.000000,-0.000000,-0.003922,-0.003922,1.000000,0.500000,1.000000],
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[50.000000,-0.000000,0.000000,-0.003922,-0.003922,1.000000,1.000000,0.500000],
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[0.000000,25.000000,-0.000000,-0.003922,-0.003922,1.000000,0.500000,0.750000],
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[-25.000000,50.000000,-0.000000,-0.003922,-0.003922,1.000000,0.250000,1.000000],
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[25.000000,-0.000000,0.000000,-0.003922,-0.003922,1.000000,0.750000,0.500000],
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[50.000000,-25.000000,0.000000,-0.003922,-0.003922,1.000000,1.000000,0.250000],
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[-25.000000,25.000000,-0.000000,-0.003922,-0.003922,1.000000,0.250000,0.750000],
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[-50.000000,50.000000,-0.000000,-0.003922,-0.003922,1.000000,0.000000,1.000000],
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[-50.000000,25.000000,-0.000000,-0.003922,-0.003922,1.000000,0.000000,0.750000],
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[0.000000,-0.000000,0.000000,-0.003922,-0.003922,1.000000,0.500000,0.500000],
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[25.000000,-25.000000,0.000000,-0.003922,-0.003922,1.000000,0.750000,0.250000],
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[50.000000,-50.000000,0.000000,-0.003922,-0.003922,1.000000,1.000000,0.000000],
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[25.000000,-50.000000,0.000000,-0.003922,-0.003922,1.000000,0.750000,0.000000],
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[-25.000000,-0.000000,0.000000,-0.003922,-0.003922,1.000000,0.250000,0.500000],
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[-50.000000,-0.000000,0.000000,-0.003922,-0.003922,1.000000,0.000000,0.500000],
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[-25.000000,-50.000000,0.000000,-0.003922,-0.003922,1.000000,0.250000,0.000000],
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[-50.000000,-50.000000,0.000000,-0.003922,-0.003922,1.000000,0.000000,0.000000]
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],
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"indices":[
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[0,1,2],
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[3,2,1],
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[2,3,4],
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[1,5,3],
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[6,4,3],
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[21,23,22],
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[24,22,23]
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]
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}

‎Chapter07/Assets/Plane.png‎

553 KB
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