#pragma once

#include <glm/glm.hpp>

#include "mesh.h"
#include "render_object.h"
#include "types.h"


// TODO: having a separate code path for each shader is annoying and error
// 	prone. could try using opaque pointers at high level (renderer, entity),
// 	and then cast to the appropriate render_object/mesh/shader type in the lower
// 	level functions based on the mesh_type property
struct entity
{
	glm::mat4 world_transform;
	// TODO: hide simple_mesh/mesh_group pointer behind abstraction
	simple_mesh* mesh;

	// TODO: should be a pointer into a global array of mesh_info(s) or
	// 	mesh_groups stored on the render_state object
	mesh_group meshes;
	render_objects* render_objs;
};

bool entInitModel(entity& e, const char* model_path);

bool entInitMesh(entity& e, simple_mesh* mesh, GLenum draw_mode);

void entUpdateSimpleMesh(entity& e, simple_mesh* mesh, GLenum draw_mode);

void entFree(entity& e);

void entSetWorldPosition(entity& e, glm::vec3 v);

void entTranslate(entity& e, glm::vec3 v);

void entScale(entity& e, glm::vec3 v);

void entRotate(entity& e, float angle, glm::vec3 axis);