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/*
   client/map.cc
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#include "audio/audio.h"
#include "core/application.h"
#include "client/map.h"
#include "client/input.h"
#include "client/targets.h"
#include "ui/ui.h"
#include "ui/paint.h"
#include "render/gl.h"
#include "render/textures.h"
#include "render/text.h"

namespace client
{

Map::Map(ui::Widget *parent) : ui::Window(parent)
{
	set_label("map");
	set_border(true);
	set_background(true);
	set_font(ui::root()->font_small());

	map_targetlabel = new ui::Label(this);
	map_targetlabel->set_label("targetlabel");
	map_targetlabel->set_background(false);
	map_targetlabel->set_border(false);
	map_targetlabel->set_font(ui::root()->font_large());
	map_targetlabel->set_alignment(ui::AlignCenter);

	map_target = 0;
	map_hover = 0;
	hide();
}

Map::~Map()
{
}

void Map::hide()
{
	ui::Window::hide();
	map_hover = 0;
	map_target = 0;
}

void Map::show()
{
	ui::Window::show();
	map_hover = 0;
	if (core::localplayer()->view()) {
		map_target = core::localplayer()->view();
	} else {
		map_target = targets::current();
	}
}

void Map::toggle()
{
	if (visible())
		hide();
	else
		show();
}

void Map::draw()
{
	const float margin = font()->width() * 2.0f;
	const float s = ui::UI::elementsize.width() * 2.0f;
	const float blue = 0.8f;
	const float gridsize = 16;

	core::Entity *entity;
	const core::Entity *current_target = map_target;
	map_target = 0;

	math::Color color;

	math::Vector2f v(global_location());
	math::Vector2f l;

	v[0] += margin;
	v[1] += (height() - s - 2.0f * margin) * 0.5f;
	map_hover = 0;

	gl::color(0, 0, blue);

	gl::begin(gl::Lines);
	for (int i = 0; i <= gridsize; i++) {
		gl::vertex(v.x(), 	v.y() + s / gridsize * i);
		gl::vertex(v.x() + s, 	v.y() + s / gridsize * i);

		gl::vertex(v.x() + s / gridsize * i, v.y());
		gl::vertex(v.x() + s / gridsize * i, v.y() + s);
	}
	gl::end();

	const size_t texture_entity = render::Textures::load("bitmaps/icons/entity_default");
	const size_t texture_globe = render::Textures::load("bitmaps/icons/entity_globe");
	const size_t texture_bright = render::Textures::load("bitmaps/icons/entity_bright");

	size_t texture_current = render::Textures::bind(texture_entity);

	v[0] += s * 0.5f;
	v[1] += s * 0.5f;

	core::Zone *zone = core::localplayer()->zone();

	const math::Vector2f cursor(input::mouse_position_x(), input::mouse_position_y());

	const float r = 12.0f;
	float scale = 2048.0f;
	scale *= 2;

	gl::enable(GL_TEXTURE_2D);
	gl::begin(gl::Quads);

	// draw map icons
	for (core::Zone::Content::iterator it = zone->content().begin(); it != zone->content().end(); it++) {
		entity = (*it);

		bool draw_icon = false;
		l.assign(v);

		if (targets::is_valid_map_target(entity)) {
			draw_icon = true;
			l[0] -= s / scale * entity->location().y();
			l[1] -= s / scale * entity->location().x();

			if (math::distancesquared(cursor, l) < (r*r)) {
				map_hover = entity->id();
			}

			if (entity == current_target) {
				map_target = entity;
				if (core::application()->time() - floorf(core::application()->time()) < 0.5f) {
					draw_icon = false;
				}
			}
		}

		if (draw_icon) {
			if (entity->type() == core::Entity::Globe) {
				if (entity->flag_is_set(core::Entity::Bright)) {
					if (texture_current  != texture_bright) {
						gl::end();
						texture_current = render::Textures::bind(texture_bright);
						gl::begin(gl::Quads);
					}
				} else {
					if (texture_current  != texture_globe) {
						gl::end();
						texture_current = render::Textures::bind(texture_globe);
						gl::begin(gl::Quads);
					}
				}
			} else {
				if (texture_current  != texture_entity) {
					gl::end();
					texture_current = render::Textures::bind(texture_entity);
					gl::begin(gl::Quads);
				}
			}

			if (entity == core::localplayer()->mission_target()) {
				color.assign(palette()->mission());
			} else {
				color.assign(entity->color());
			}
			color.a = 1.0f;

			gl::color(color);
			glTexCoord2f(0.0f, 0.0f);
			gl::vertex(l.x() - r, l.y() - r);

			glTexCoord2f(1.0f, 0.0f);
			gl::vertex(l.x() + r, l.y() - r);

			glTexCoord2f(1.0f, 1.0f);
			gl::vertex(l.x() + r, l.y() + r);

			glTexCoord2f(0.0f, 1.0f);
			gl::vertex(l.x() - r, l.y() + r);
		}

	}

	// draw localcontrol icon
	entity = core::localcontrol();

	//if (core::localcontrol()->state() != core::Entity::Docked) {
	l.assign(v);
	l[0] -= s / scale * entity->location().y();
	l[1] -= s / scale * entity->location().x();
	if (core::application()->time() - floorf(core::application()->time()) < 0.5f) {
		if (texture_current  != texture_entity) {
			gl::end();
			texture_current = render::Textures::bind(texture_entity);
			gl::begin(gl::Quads);
		}

		math::Color color(entity->color());
		color.a = 1.0f;
		gl::color(color);
		glTexCoord2f(0.0f, 0.0f);
		gl::vertex(l.x() - r, l.y() - r);

		glTexCoord2f(1.0f, 0.0f);
		gl::vertex(l.x() + r, l.y() - r);

		glTexCoord2f(1.0f, 1.0f);
		gl::vertex(l.x() + r, l.y() + r);

		glTexCoord2f(0.0f, 1.0f);
		gl::vertex(l.x() - r, l.y() + r);
	}
	//}

	gl::end();
	gl::disable(GL_TEXTURE_2D);

	if (map_target) {
		map_targetlabel->set_size(width() -  s - margin * 3.0f, map_targetlabel->font()->height() * 2.0f);
		map_targetlabel->set_location(s + margin * 2.0f, 4);
		map_targetlabel->set_text(map_target->name());
		map_targetlabel->show();
	} else {
		map_targetlabel->hide();
	}
}

bool Map::on_keypress(const int key, const unsigned int modifier)
{
	if (key == 512 + SDL_BUTTON_LEFT) {
		if (hover()) {
			core::Entity *target = core::localplayer()->zone()->find_entity(hover());
			if (targets::is_valid_map_target(target)) {
				map_target = target;
				targets::select_target(map_target);
				//audio::play("ui/target");
			}
		}
		return true;

	} else if (key == SDLK_ESCAPE) {
		if (visible()) {
			hide();
			return true;
		}
	}

	return false;
}

}