Add Entity::HasComponents() wrapper

.gitignore

@@ -0,0 +1 @@
+build*/

CMakeLists.txt

@@ -4,10 +4,10 @@ project(VoidEngine VERSION 1.0.0 LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+file(GLOB_RECURSE SOURCE_FILES "src/*.cpp" "include/*.h")
+
 add_library(${PROJECT_NAME}
-    STATIC
-    src/*.cpp
-    include/*.hpp
+    STATIC ${SOURCE_FILES}
 )
 
 target_include_directories(${PROJECT_NAME}

include/component.h

@@ -0,0 +1,14 @@
+#pragma once
+class Entity;
+
+class Component {
+public:
+  virtual void Init();
+  virtual void Draw();
+  virtual void Update();
+  virtual void FixedUpdate();
+  virtual void Destroy();
+
+private:
+  Entity *owner;
+};

include/entity.h

@@ -0,0 +1,21 @@
+#ifndef VOID_ENTITY_H
+#define VOID_ENTITY_H
+#include "component.h"
+#include <memory>
+#include <vector>
+
+class Entity {
+public:
+  template <typename CompT, typename... Args>
+  Component *AddComponent(Args &&...args);
+  template <typename CompT> CompT *GetComponent();
+  template <typename CompT> bool HasComponent();
+
+  void Update();
+
+private:
+  std::vector<std::unique_ptr<Component>> components;
+};
+
+#include "../src/entity_i.cpp"
+#endif // VOID_ENTITY_H

include/main.hpp

@@ -1 +0,0 @@
-// Public code time!

src/entity.cpp

@@ -0,0 +1,7 @@
+#include "../include/entity.h"
+
+void Entity::Update() {
+  for (auto &comp : components) {
+    comp.get()->Update();
+  }
+}

src/entity_i.cpp

@@ -0,0 +1,23 @@
+#pragma once
+#ifndef VOID_ENTITY_H
+#include "../include/entity.h"
+#endif
+#include <memory>
+#include <utility>
+#include <vector>
+
+template <typename CompT, typename... Args>
+Component *Entity::AddComponent(Args &&...args) {
+  components.push_back(std::make_unique<CompT>(std::forward<Args>(args)...));
+  return components.back().get();
+}
+
+template <typename CompT> CompT *Entity::GetComponent() {
+  for (const auto &comp_ptr : components) {
+    return dynamic_cast<CompT *>(comp_ptr.get());
+  }
+}
+
+template <typename CompT> bool Entity::HasComponent() {
+  return GetComponent<CompT>() != nullptr;
+}

src/main.cpp

@@ -1 +0,0 @@
-// Code time!