#include <memory>

#include "BlueTileBehavior.h"
#include "YellowTileBehavior.h"
#include "Artist.h"
#include "Tile.h"

using namespace std;

BlueTileBehavior BlueTileBehavior::instance { BlueTileBehavior::type };

void BlueTileBehavior::step(Artist * artist) {
	this->interactions++;
	if (dx != 0 || dy != 0) return;
	if (artist == nullptr) return;

	if (artist->data.vx == 0) dx = 1;
	if (artist->data.vy == 0) dy = 1;
}

static void update_neighbor(Tile & here, int dx, int dy) {
	if (dx == 0 && dy == 0) return;
	Tile * neighbor = here.get_neighbor(dx, dy);
	if (neighbor == &here) return;
	if (neighbor == nullptr) return;

	neighbor->set_type(BlueTileBehavior::type);
}

void BlueTileBehavior::update(Tile & tile) {
	if (this->interactions < 1) return;

	update_neighbor(tile, this->dx, this->dy);
	update_neighbor(tile, -this->dx, -this->dy);

	tile.set_type(YellowTileBehavior::type);
}

unique_ptr<TileBehaviorStrategy> BlueTileBehavior::clone(Museum & museum) {
	auto instance = new BlueTileBehavior();
	instance->museum = &museum;
	return unique_ptr<TileBehaviorStrategy>(instance);
}