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-rw-r--r--mwe/events/include/event.h2
-rw-r--r--src/crepe/CMakeLists.txt3
-rw-r--r--src/crepe/Component.cpp2
-rw-r--r--src/crepe/Component.h1
-rw-r--r--src/crepe/ComponentManager.hpp7
-rw-r--r--src/crepe/Metadata.cpp9
-rw-r--r--src/crepe/Metadata.h22
-rw-r--r--src/crepe/System.h4
-rw-r--r--src/crepe/api/GameObject.cpp22
-rw-r--r--src/crepe/api/GameObject.h10
-rw-r--r--src/crepe/api/Transform.cpp6
-rw-r--r--src/crepe/api/Transform.h3
-rw-r--r--src/example/CMakeLists.txt1
-rw-r--r--src/example/ecs.cpp56
-rw-r--r--src/example/particle.cpp2
-rw-r--r--src/example/physics.cpp10
-rw-r--r--src/example/rendering.cpp21
-rw-r--r--src/example/script.cpp8
18 files changed, 142 insertions, 47 deletions
diff --git a/mwe/events/include/event.h b/mwe/events/include/event.h
index 16c75bf..3e70201 100644
--- a/mwe/events/include/event.h
+++ b/mwe/events/include/event.h
@@ -152,7 +152,7 @@ private:
};
class ShutDownEvent : public Event {
public:
- ShutDownEvent() : Event("ShutDownEvent") {};
+ ShutDownEvent() : Event("ShutDownEvent"){};
REGISTER_EVENT_TYPE(ShutDownEvent)
diff --git a/src/crepe/CMakeLists.txt b/src/crepe/CMakeLists.txt
index d938eb8..9ad1ff9 100644
--- a/src/crepe/CMakeLists.txt
+++ b/src/crepe/CMakeLists.txt
@@ -12,8 +12,8 @@ target_sources(crepe PUBLIC
CollisionSystem.cpp
Collider.cpp
SDLContext.cpp
-
RenderSystem.cpp
+ Metadata.cpp
)
target_sources(crepe PUBLIC FILE_SET HEADERS FILES
@@ -31,6 +31,7 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
Collider.h
SDLContext.h
RenderSystem.h
+ Metadata.h
)
add_subdirectory(api)
diff --git a/src/crepe/Component.cpp b/src/crepe/Component.cpp
index 358ce31..78b47fa 100644
--- a/src/crepe/Component.cpp
+++ b/src/crepe/Component.cpp
@@ -3,3 +3,5 @@
using namespace crepe;
Component::Component(uint32_t id) : game_object_id(id), active(true) {}
+
+int Component::get_instances_max() const { return -1; }
diff --git a/src/crepe/Component.h b/src/crepe/Component.h
index bc44865..039836e 100644
--- a/src/crepe/Component.h
+++ b/src/crepe/Component.h
@@ -13,6 +13,7 @@ protected:
public:
virtual ~Component() = default;
+ virtual int get_instances_max() const;
public:
uint32_t game_object_id;
diff --git a/src/crepe/ComponentManager.hpp b/src/crepe/ComponentManager.hpp
index 9b07f13..828ca8e 100644
--- a/src/crepe/ComponentManager.hpp
+++ b/src/crepe/ComponentManager.hpp
@@ -31,6 +31,13 @@ T & ComponentManager::add_component(uint32_t id, Args &&... args) {
// Create a new component of type T (arguments directly forwarded). The
// constructor must be called by ComponentManager.
T * instance = new T(id, forward<Args>(args)...);
+
+ // Check if the vector size is not greater than get_instances_max
+ if (components[type][id].size() >= instance->get_instances_max()) {
+ throw std::runtime_error(
+ "Exceeded maximum number of instances for this component type");
+ }
+
// store its unique_ptr in the vector<>
components[type][id].push_back(unique_ptr<T>(instance));
diff --git a/src/crepe/Metadata.cpp b/src/crepe/Metadata.cpp
new file mode 100644
index 0000000..d362e0a
--- /dev/null
+++ b/src/crepe/Metadata.cpp
@@ -0,0 +1,9 @@
+#include "Metadata.h"
+
+using namespace crepe;
+using namespace std;
+
+Metadata::Metadata(uint32_t gameObjectId, string name, string tag)
+ : Component(gameObjectId), name(name), tag(tag) {}
+
+int Metadata::get_instances_max() const { return 1; }
diff --git a/src/crepe/Metadata.h b/src/crepe/Metadata.h
new file mode 100644
index 0000000..2f08476
--- /dev/null
+++ b/src/crepe/Metadata.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "Component.h"
+
+namespace crepe {
+
+class Metadata : public Component {
+public:
+ Metadata(uint32_t game_object_id, std::string name, std::string tag);
+ int get_instances_max() const;
+
+public:
+ std::string name;
+ std::string tag;
+ uint32_t parent = UINT32_MAX;
+ std::vector<uint32_t> children;
+};
+
+} // namespace crepe
diff --git a/src/crepe/System.h b/src/crepe/System.h
index ecbb7f5..8744920 100644
--- a/src/crepe/System.h
+++ b/src/crepe/System.h
@@ -8,8 +8,8 @@ public:
virtual void update() = 0;
protected:
- System() {};
- virtual ~System() {};
+ System(){};
+ virtual ~System(){};
private:
// singleton
diff --git a/src/crepe/api/GameObject.cpp b/src/crepe/api/GameObject.cpp
index b167187..5393e39 100644
--- a/src/crepe/api/GameObject.cpp
+++ b/src/crepe/api/GameObject.cpp
@@ -1,7 +1,25 @@
+#include "api/Transform.h"
+
#include "GameObject.h"
+#include "Metadata.h"
using namespace crepe::api;
using namespace std;
-GameObject::GameObject(uint32_t id, string name, string tag, int layer)
- : id(id), name(name), tag(tag), active(true), layer(layer) {}
+GameObject::GameObject(uint32_t id, std::string name, std::string tag,
+ Point position, double rotation, double scale)
+ : id(id) {
+ ComponentManager & mgr = ComponentManager::get_instance();
+ mgr.add_component<Transform>(this->id, position, rotation, scale);
+ mgr.add_component<Metadata>(this->id, name, tag);
+}
+
+void GameObject::set_parent(GameObject & parent) {
+ auto & mgr = ComponentManager::get_instance();
+ vector<reference_wrapper<Metadata>> thisMetadata
+ = mgr.get_components_by_id<Metadata>(this->id);
+ vector<reference_wrapper<Metadata>> parentMetadata
+ = mgr.get_components_by_id<Metadata>(parent.id);
+ thisMetadata.at(0).get().parent = parent.id;
+ parentMetadata.at(0).get().children.push_back(this->id);
+}
diff --git a/src/crepe/api/GameObject.h b/src/crepe/api/GameObject.h
index 57508c5..862fee8 100644
--- a/src/crepe/api/GameObject.h
+++ b/src/crepe/api/GameObject.h
@@ -3,20 +3,20 @@
#include <cstdint>
#include <string>
+#include "api/Point.h"
+
namespace crepe::api {
class GameObject {
public:
- GameObject(uint32_t id, std::string name, std::string tag, int layer);
+ GameObject(uint32_t id, std::string name, std::string tag, Point position,
+ double rotation, double scale);
+ void set_parent(GameObject & parent);
template <typename T, typename... Args>
T & add_component(Args &&... args);
uint32_t id;
- std::string name;
- std::string tag;
- bool active;
- int layer;
};
} // namespace crepe::api
diff --git a/src/crepe/api/Transform.cpp b/src/crepe/api/Transform.cpp
index c76bc72..4b4da8f 100644
--- a/src/crepe/api/Transform.cpp
+++ b/src/crepe/api/Transform.cpp
@@ -8,9 +8,11 @@
using namespace crepe::api;
-Transform::Transform(uint32_t game_id, const Point & point, double rot,
- double scale)
+Transform::Transform(uint32_t game_id, Point point, double rot, double scale)
: Component(game_id), position(point), rotation(rot), scale(scale) {
dbg_trace();
}
+
Transform::~Transform() { dbg_trace(); }
+
+int Transform::get_instances_max() const { return 1; }
diff --git a/src/crepe/api/Transform.h b/src/crepe/api/Transform.h
index c451c16..85e16b4 100644
--- a/src/crepe/api/Transform.h
+++ b/src/crepe/api/Transform.h
@@ -14,8 +14,9 @@ class Transform : public Component {
// works similar (or the same) as those found in GLSL?
public:
- Transform(uint32_t id, const Point &, double, double);
+ Transform(uint32_t id, Point, double, double);
~Transform();
+ int get_instances_max() const;
//! Translation (shift)
Point position;
//! Rotation, in radians
diff --git a/src/example/CMakeLists.txt b/src/example/CMakeLists.txt
index fea6f60..81df8d1 100644
--- a/src/example/CMakeLists.txt
+++ b/src/example/CMakeLists.txt
@@ -24,3 +24,4 @@ add_example(rendering)
add_example(asset_manager)
add_example(particle)
add_example(physics)
+add_example(ecs)
diff --git a/src/example/ecs.cpp b/src/example/ecs.cpp
new file mode 100644
index 0000000..5646edd
--- /dev/null
+++ b/src/example/ecs.cpp
@@ -0,0 +1,56 @@
+#include <iostream>
+
+#include "../crepe/ComponentManager.h"
+#include "../crepe/Metadata.h"
+#include "../crepe/api/GameObject.h"
+#include "../crepe/api/Transform.h"
+
+using namespace crepe::api;
+using namespace crepe;
+using namespace std;
+
+int main() {
+ // Create a few GameObjects
+ try {
+ GameObject body(0, "body", "person", Point{0, 0}, 0, 1);
+ GameObject rightLeg(1, "rightLeg", "person", Point{1, 1}, 0, 1);
+ GameObject leftLeg(2, "leftLeg", "person", Point{1, 1}, 0, 1);
+ GameObject rightFoot(3, "rightFoot", "person", Point{2, 2}, 0, 1);
+ GameObject leftFoot(4, "leftFoot", "person", Point{2, 2}, 0, 1);
+
+ // Set the parent of each GameObject
+ rightFoot.set_parent(rightLeg);
+ leftFoot.set_parent(leftLeg);
+ rightLeg.set_parent(body);
+ leftLeg.set_parent(body);
+
+ // Adding a second Transform component is not allowed and will invoke an exception
+ body.add_component<Transform>(Point{10, 10}, 0, 1);
+ } catch (const exception & e) {
+ cerr << e.what() << endl;
+ }
+
+ // Get the Metadata and Transform components of each GameObject
+ ComponentManager & mgr = ComponentManager::get_instance();
+ vector<reference_wrapper<Metadata>> metadata
+ = mgr.get_components_by_type<Metadata>();
+ vector<reference_wrapper<Transform>> transform
+ = mgr.get_components_by_type<Transform>();
+
+ // Print the Metadata and Transform components
+ for (auto & m : metadata) {
+ cout << "Id: " << m.get().game_object_id << " Name: " << m.get().name
+ << " Tag: " << m.get().tag << " Parent: " << m.get().parent
+ << " Children: ";
+ for (auto & c : m.get().children) {
+ cout << c << " ";
+ }
+ cout << endl;
+ }
+ for (auto & t : transform) {
+ cout << "Id: " << t.get().game_object_id << " Position: ["
+ << t.get().position.x << ", " << t.get().position.y << "]" << endl;
+ }
+
+ return 0;
+}
diff --git a/src/example/particle.cpp b/src/example/particle.cpp
index 53fa213..fe8a43b 100644
--- a/src/example/particle.cpp
+++ b/src/example/particle.cpp
@@ -25,7 +25,7 @@ int main(int argc, char * argv[]) {
}
GameObject * game_object[1];
- game_object[0] = new GameObject(0, "Name", "Tag", 0);
+ game_object[0] = new GameObject(0, "Name", "Tag", Point{0, 0}, 0, 1);
// FIXME: all systems are singletons, so this shouldn't even compile.
ParticleSystem particle_system;
diff --git a/src/example/physics.cpp b/src/example/physics.cpp
index db69b9b..1bafdf3 100644
--- a/src/example/physics.cpp
+++ b/src/example/physics.cpp
@@ -16,13 +16,9 @@ using namespace std;
int main(int argc, char * argv[]) {
PhysicsSystem physics_system;
GameObject * game_object[2];
- game_object[1] = new GameObject(2, "Name", "Tag", 0); // not found not used
- game_object[0] = new GameObject(5, "Name", "Tag", 0);
- Point point = {
- .x = 0,
- .y = 0,
- };
- game_object[0]->add_component<Transform>(point, 0, 0);
+ // not found not used
+ game_object[1] = new GameObject(2, "Name", "Tag", Point{0, 0}, 0, 0);
+ game_object[0] = new GameObject(5, "Name", "Tag", Point{0, 0}, 0, 0);
game_object[0]->add_component<Rigidbody>(1, 1, BodyType::DYNAMIC);
game_object[0]->add_component<Force>(1, 0);
physics_system.update();
diff --git a/src/example/rendering.cpp b/src/example/rendering.cpp
index 1bf448c..9624093 100644
--- a/src/example/rendering.cpp
+++ b/src/example/rendering.cpp
@@ -23,19 +23,14 @@ int main() {
dbg_trace();
- auto obj = GameObject(0, "name", "tag", 0);
- auto obj1 = GameObject(1, "name", "tag", 0);
- auto obj2 = GameObject(2, "name", "tag", 0);
+ auto obj = GameObject(0, "name", "tag", Point{0, 0}, 1, 1);
+ auto obj1 = GameObject(1, "name", "tag", Point{500, 0}, 1, 0.1);
+ auto obj2 = GameObject(2, "name", "tag", Point{800, 0}, 1, 0.1);
auto & mgr = AssetManager::get_instance();
// Normal adding components
{
Color color(0, 0, 0, 0);
- Point point = {
- .x = 0,
- .y = 0,
- };
- obj.add_component<Transform>(point, 1, 1);
obj.add_component<Sprite>(
make_shared<Texture>("../asset/texture/img.png"), color,
FlipSettings{true, true});
@@ -43,22 +38,12 @@ int main() {
{
Color color(0, 0, 0, 0);
- Point point = {
- .x = 500,
- .y = 0,
- };
- obj1.add_component<Transform>(point, 0, 0.1);
auto img = mgr.cache<Texture>("../asset/texture/second.png");
obj1.add_component<Sprite>(img, color, FlipSettings{true, true});
}
{
Color color(0, 0, 0, 0);
- Point point = {
- .x = 800,
- .y = 0,
- };
- //obj.add_component<Transform>(point, 0, 0.1);
auto img = mgr.cache<Texture>("../asset/texture/second.png");
obj2.add_component<Sprite>(img, color, FlipSettings{true, true});
}
diff --git a/src/example/script.cpp b/src/example/script.cpp
index 5df26e8..e4c8319 100644
--- a/src/example/script.cpp
+++ b/src/example/script.cpp
@@ -37,13 +37,7 @@ class MyScript : public Script {
int main() {
// Create game object with Transform and BehaviorScript components
- auto obj = GameObject(0, "name", "tag", 0);
- obj.add_component<Transform>(
- Point{
- .x = 1.2,
- .y = 3.4,
- },
- 0, 0);
+ auto obj = GameObject(0, "name", "tag", Point{1.2, 3.4}, 0, 1);
obj.add_component<BehaviorScript>().set_script<MyScript>();
// Get ScriptSystem singleton instance (this would normally be done from the