Toy-Raytracer/Player.cpp

//
// Created by trotfunky on 27/05/19.
//

#include "Player.h"


Player::Player(float x, float y, float alpha) : x(x), y(y), orientation(alpha)
{}

void Player::move(float dx, float dy)
{
	x += dx;
	y += dy;
}

void Player::rotate(float alpha)
{
	orientation += fmodf(alpha, 360);
	if(orientation > 360)
	{
		orientation -= 360;
	}
	else if(orientation < 0)
	{
		orientation += 360;
	}

	/*
	 * Rotate the movement vector along the new angle, assumes that the only
	 * speed influencing the player is its own movement.
	 */
	float prevSpeedX = currentMoveSpeedX;
	float prevSpeedY = currentMoveSpeedY;
	currentMoveSpeedX = cosf(-alpha * deg_to_rad) * prevSpeedX
						- sinf(-alpha * deg_to_rad) * prevSpeedY;
	currentMoveSpeedY = sinf(-alpha * deg_to_rad) * prevSpeedX
						+ cosf(-alpha * deg_to_rad) * prevSpeedY;
}

void Player::updateSpeed(float localX, float localY) {
	// TODO: Support strafing.
	currentMoveSpeedX = localX * sinf(orientation*deg_to_rad)*moveSpeed;
	currentMoveSpeedY = localX * cosf(orientation*deg_to_rad)*moveSpeed;
}