Add a transform component and propagation system

[libs/game.git] / source / game / entity.h

diff --git a/source/game/entity.h b/source/game/entity.h
index 7c7ee89fe85cf2c117fccd7f259540dafe3b93b6..c28cbe5075b94567709ba562f33698097e959e29 100644 (file)
--- a/source/game/entity.h
+++ b/source/game/entity.h
@@ -2,11 +2,14 @@
 #define MSP_GAME_ENTITY_H_
 
 #include "handle.h"
+#include "owned.h"
 
 namespace Msp::Game {
 
 class Component;
 class Stage;
+class Transform;
+struct TransformValues;
 
 class hierarchy_error: public std::logic_error
 {
@@ -16,13 +19,18 @@ public:
 
 class Entity
 {
+public:
+       enum TransformTag { NO_TRANSFORM };
+
 private:
        Handle<Entity> parent;
        std::vector<Handle<Component>> components;
        std::vector<Handle<Entity>> children;
+       Owned<Transform> transform;
 
 public:
-       Entity(Handle<Entity>);
+       Entity(Handle<Entity>, TransformTag);
+       Entity(Handle<Entity>, const TransformValues &);
        virtual ~Entity();
 
        void add_component(Handle<Component>);
@@ -33,7 +41,9 @@ public:
 
        Handle<Entity> get_parent() const { return parent; }
        Handle<Entity> get_root();
+       const std::vector<Handle<Entity>> &get_children() const { return children; }
        Stage &get_stage();
+       Handle<Transform> get_transform() const { return transform; }
 };