Entity.h

#ifndef ENTITY_H
#define ENTITY_H

#include "Sprite.h"
#include "ComponentManager.h"

class Entity : public Component
{
public:
    Entity(const Sprite &, float2, float);
    virtual ~Entity();

    virtual void update();
    virtual void draw();

    float2 getPosition() const { return position; }
    void setPosition(const float2 &p) { position = p; }

    template <class EntityType> EntityType *collisionWithE(Entity* = NULL);
    float2 collisionSeparate(Entity *e, float2, float2, float);
protected:

    Sprite sprite;
    float2 position;
    float orientation;
    float2 velocity;
    float radius;


   // int hp;
private:
};

template <class EntityType> EntityType* Entity::collisionWithE(Entity* except)
{
    ComponentManager::get().find<EntityType>();
    EntityType *r, *t = NULL;
    float maxLen = 0.f;
    while( (r=ComponentManager::get().next<EntityType>()) != NULL )
    {
        float len = r->radius + radius - (r->position-position).len();
        if(velocity>float2(0,0))
        if (len>0 && except!=r && len>maxLen)
        {
            maxLen = len;
            t = r;
        }
    }
    return t;
}

#endif // ENTITY_H