Section.cpp

/*
 * Snake game program using the SDL library
 *
 * @author J. Alvarez
 */
#include "Screen.hpp"
#include "Section.hpp"
#include "Snake.hpp"

namespace SnakeGame {

const unsigned int Section::S_SECTION_WIDTH = 20;

Section::Section(): Collideable(0, 0) {}

Section::Section(int x, int y):
	Collideable(x, y) {}

void Section::draw(Screen & screen) {
	for (int i = 0; i < S_SECTION_WIDTH; i++)
		for (int j = 0; j < S_SECTION_WIDTH; j++)
			screen.setPixel((int) m_x + i, (int) m_y + j, Snake::S_SNK_RED,
				Snake::S_SNK_GREEN, Snake::S_SNK_BLUE);
}

void Section::move(int direction) {
	switch (direction) {
		case Snake::Direction::UP:
			m_y -= S_SECTION_WIDTH;
			break;
		case Snake::Direction::DOWN:
			m_y += S_SECTION_WIDTH;
			break;
		case Snake::Direction::LEFT:
			m_x -= S_SECTION_WIDTH;
			break;
		case Snake::Direction::RIGHT:
			m_x += S_SECTION_WIDTH;
			break;
	}
}

int Section::calculateDirection(Section & other) {
	if (other.m_x - m_x == 0) {
		if(other.m_y - m_y < 0)
			return Snake::Direction::UP;
		else
			return Snake::Direction::DOWN;
	}
	else {
		if(other.m_x - m_x > 0)
			return Snake::Direction::RIGHT;
		else
			return Snake::Direction::LEFT;
	}
}

void Section::toString() { // TODO Remove - Used for debugging
	SDL_Log("<%d, %d>", m_x, m_y);
}

} // namespace SnakeGame