#include "scene.h"
#include "glassert.h"
#include <glm/glm.hpp>
#include <glm/ext.hpp>
#include "camera.h"

Scene::Scene()
{

}

Scene::~Scene()
{
    for(Entity* e : entities)
        delete(e);
}

void Scene::addEntity(Mesh& mesh, Material& mat)
{
    entities.push_back(new Entity(NULL, mesh, mat));
}

void Scene::addEntity(Mesh& mesh)
{
    Material default_material = Material();
    entities.push_back(new Entity(NULL, mesh, default_material));
}

void Scene::drawEntities(GLuint programId)
{
    glm::mat4 viewMatrix = camera->getViewMatrix();
    glm::mat4 projectionMatrix = camera->getProjectionMatrix();
    glAssert(GLuint viewMatrixUniform = glGetUniformLocation(programId, "viewMatrix"));
    glAssert(glUniformMatrix4fv(viewMatrixUniform, 1, GL_FALSE, glm::value_ptr(viewMatrix)));
    for(Entity* e : entities)
        e->mesh.draw();
}

void Scene::setCamera(Camera* myCamera)
{
    camera = myCamera;
}

Camera* Scene::getCamera()
{
    return camera;
}