//
// Created by aurailus on 30/12/18.
//

#include <glm/glm.hpp>

#include "Ray.h"

#include "world/player/LocalPlayer.h"

Ray::Ray(glm::vec3 pos, float yawDeg, float pitchDeg) :
	pos(pos),
	start(pos) {
	
	float yaw = glm::radians(yawDeg + 90);
	float pitch = glm::radians(pitchDeg);
	
	this->dir = glm::normalize(glm::vec3(
		std::sin(yaw) * std::cos(pitch), std::sin(pitch),
		-std::cos(yaw) * std::cos(pitch)));
}

Ray::Ray(Player& player) : pos(start),
	start(player.getPos() + player.getLookOffset()) {
	
	float yaw = glm::radians(player.getYaw() + 90);
	float pitch = glm::radians(player.getPitch());
	
	dir = glm::normalize(glm::vec3(
		std::sin(yaw) * std::cos(pitch), std::sin(pitch),
		-std::cos(yaw) * std::cos(pitch)));
}

void Ray::step(float scale) {
	pos += scale * dir;
}

glm::vec3 Ray::getEnd() {
	return pos;
}

float Ray::getLength() {
	return glm::distance(start, pos);
}