#include "common.hpp"

static sf::RectangleShape wot_rect;

static void draw_tile(sf::RenderWindow *window, float x, float y,
                      world::tile_t *tile)
{
	wot_rect.setSize(sf::Vector2f(1.0f, 1.0f));
	wot_rect.setPosition(sf::Vector2f(x, y));
	wot_rect.setFillColor(sf::Color(tile->type, 255 - tile->type, tile->type + 128));
	wot_rect.setOutlineColor(sf::Color::Transparent);
	window->draw(wot_rect);
}

static void draw_sector(sf::RenderWindow *window, world::world_t *world,
                        world::sector_index_t index)
{
	world::sector_t *sector;

	sector = world->get_sector(index);

	for (ssize_t y = 0; y < SECTOR_SIZE; y++)
	for (ssize_t x = 0; x < SECTOR_SIZE; x++) {
		draw_tile(window,
		          index.x * SECTOR_SIZE + x,
		          index.y * SECTOR_SIZE + y,
		          sector->tiles + y * SECTOR_SIZE + x);
	}

	wot_rect.setSize(sf::Vector2f(SECTOR_SIZE, SECTOR_SIZE));
	wot_rect.setPosition(sf::Vector2f(index.x * 16, index.y * 16));
	wot_rect.setOutlineColor(sf::Color::Yellow);
	wot_rect.setOutlineThickness(0.06f);
	wot_rect.setFillColor(sf::Color::Transparent);
	window->draw(wot_rect);
}

void world::world_t::render(sf::RenderWindow *window)
{
	sf::Vector2u size = window->getSize();
	sf::Vector2f A, B, C, D;
	sf::Rect<float> bbox;
	sf::Rect<ssize_t> index_box;

	A = window->mapPixelToCoords(sf::Vector2i(0, 0));
	B = window->mapPixelToCoords(sf::Vector2i(size.x, 0));
	C = window->mapPixelToCoords(sf::Vector2i(0, size.y));
	D = window->mapPixelToCoords(sf::Vector2i(size.x, size.y));

	bbox.left = std::min({A.x, B.x, C.x, D.x});
	bbox.top = std::min({A.y, B.y, C.y, D.y});
	bbox.width = std::max({A.x, B.x, C.x, D.x});
	bbox.height = std::max({A.y, B.y, C.y, D.y});

	index_box.left = floor(bbox.left / SECTOR_SIZE);
	index_box.top = floor(bbox.top / SECTOR_SIZE);
	index_box.width = ceil(bbox.width / SECTOR_SIZE);
	index_box.height = ceil(bbox.height / SECTOR_SIZE);

	for (ssize_t y = index_box.top; y < index_box.height; y++)
	for (ssize_t x = index_box.left; x < index_box.width; x++)
		draw_sector(window, this, world::sector_index_t(x, y));
}

void interface::state_t::render()
{
}