#include "gameplay/camera.h"

void Camera::update(double deltaTime)
{
	if (target == nullptr)
		return;
	float smoothingFactor = 5.0f;
	//if (glm::distance(target->getCenter(), getCenterPos()) > 20.f)
	position += (target->getCenter() - getCenterPos()) * smoothingFactor * static_cast<float>(deltaTime);
}

glm::mat4 Camera::getViewMatrix() 
{
	return glm::lookAt(position, position + front, up);
}

glm::mat4 Camera::getProjectionMatrix()
{
	return glm::ortho(0.f, viewPortW, viewPortH, 0.f);
}

const glm::vec3 Camera::worldToLocal(const glm::vec3& worldCoordinates)
{
	//return worldCoordinates - position;
	return glm::vec3(getViewMatrix() * glm::vec4(worldCoordinates, 1.0f));
}