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#pragma once
#include "MeshInstance.hpp"
#include "../types.hpp"
#include <glm/gtc/type_ptr.hpp>
namespace amalgine {
const int NUM_ENTITIES = 1024; // Should always be a power a multiple of 16, to utilize compiler auto-vectorization
using Entity = int;
const Entity INVALID_ENTITY = -1;
using EntityMaskType = u64;
enum EntityMask : EntityMaskType {
ENTITY_MASK_NONE = 0,
ENTITY_MASK_TRANSFORMATION = 1 << 0,
ENTITY_MASK_VELOCITY = 1 << 1,
ENTITY_MASK_MESH_COMPONENT = 1 << 2
};
class EntityWorld {
public:
EntityWorld();
// Returns @INVALID_ENTITY on failure
// O(n)
Entity create_entity(EntityMask type);
// O(1)
void remove_entity(Entity entity);
glm::mat4& get_transformation(Entity entity);
glm::vec3& get_velocity(Entity entity);
MeshInstance& get_mesh_instance(Entity entity);
void update();
private:
EntityMask mask[NUM_ENTITIES];
// Components
glm::mat4 transformation[NUM_ENTITIES];
glm::vec3 velocity[NUM_ENTITIES];
MeshInstance mesh_instance[NUM_ENTITIES];
};
}
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