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

#include "client/input.h"
#include "client/hudenginestatus.h"
#include "core/core.h"
#include "core/application.h"
#include "ui/ui.h"
#include "ui/iconbutton.h"
#include "ui/paint.h"
#include "render/camera.h"
#include "render/gl.h"
#include "render/render.h"

namespace client
{

HUDEngineStatus::HUDEngineStatus(ui::Widget *parent) : ui::Widget(parent)
{
	set_border(false);
	set_background(false);
		
	_button_auto_palette = new ui::Palette(*palette());
	_button_auto = new ui::IconButton(this, "bitmaps/hud/button_auto", "freeflight");
	_button_auto->set_palette(_button_auto_palette);
	
	_button_lock_palette = new ui::Palette(*palette());
	_button_lock = new ui::IconButton(this, "bitmaps/hud/button_lock", "ui_control");
	_button_lock->set_palette(_button_lock_palette);
}

HUDEngineStatus::~HUDEngineStatus()
{
	delete _button_auto_palette;
	delete _button_lock_palette;
}

void HUDEngineStatus::resize()
{
	const float padding =  ui::root()->font_tiny()->width();
	const float icon_size = 48.0f;
	
	_button_auto->set_size(icon_size * 2.0f, icon_size);
	_button_auto->set_location(padding, padding);
	
	_button_lock->set_size(icon_size * 2.0f, icon_size);
	_button_lock->set_location(width() - padding - _button_lock->width(), padding);
	
}

void HUDEngineStatus::draw()
{
	const float padding =  ui::root()->font_tiny()->width();
	
	math::Vector2f s(size());
	s[0] -= 2.0f * padding;
	s[1] = ui::root()->font_large()->height();
	
	math::Vector2f pos(global_location());
	pos[0] += padding;
	pos[1] += height() - s[1] - padding;
	
	// thrust
	const float blink_t = core::application()->time() * 2.0f;
	std::ostringstream thruststr;
	switch(core::localcontrol()->state())
	{
		case core::Entity::Normal:
			thruststr << "^B" << roundf(core::localcontrol()->thrust() * 100.0f) << "%";
			break;
		case core::Entity::ImpulseInitiate:
		case core::Entity::JumpInitiate:
			
			if ((blink_t - floorf(blink_t)) < 0.5f)
			{
				thruststr << "^B--";
			}
			break;
		default:
			thruststr << "^B--";
			break;
	}

	// speed
	std::ostringstream speedstr;
	speedstr << "^B" << roundf(core::localcontrol()->speed() * 100.0f);
	
	ui::Paint::set_color(palette()->foreground());
	ui::Paint::draw_label(pos, s, ui::root()->font_large(), thruststr.str(), ui::AlignLeft | ui::AlignTop);
	ui::Paint::draw_label(pos, s, ui::root()->font_large(), speedstr.str(), ui::AlignRight | ui::AlignTop);
	
	// autopilot and control lock buttons

	// see HUD::draw()
	const bool control_lock = !core::localcontrol()->has_target_controlflag(core::EntityControlable::ControlFlagOverride);

	if (core::localplayer()->autopilot_target())
	{
		_button_auto->enable();
		if (control_lock || ((blink_t - floorf(blink_t)) < 0.5f))
		{
			_button_auto_palette->set_foreground(palette()->mission());
		} else
		{
			_button_auto_palette->set_foreground(palette()->foreground());
		}
	} else
	{
		_button_auto->disable();
	}
	
	if (control_lock)
	{
		_button_lock_palette->set_foreground(math::Color(1.0f, 0.0f, 0.0f));
	} else
	{
		// free controls
		_button_lock_palette->set_foreground(palette()->foreground());
	}
	
	// health bar size
	const float hb_width = width() - 12 * ui::root()->font_large()->width() - 2.0f * padding;
	const float hb_height = ui::root()->font_tiny()->width();
	const float hb_f = hb_width * core::localcontrol()->health() / 100.0f;
	
	pos.assign(global_location());
	pos[0] += (width() - hb_width) * 0.5f;
	pos[1] += height() - hb_height - padding;
	
	// health bar
	gl::color(0, 1, 0, 1);
	gl::begin(gl::Quads);
	gl::vertex(pos[0], pos[1]);
	gl::vertex(pos[0] + hb_f, pos[1]);
	gl::vertex(pos[0] + hb_f, pos[1] + hb_height);
	gl::vertex(pos[0], pos[1] + hb_height);
	gl::end();
	
	// health bar frame
	gl::color(palette()->foreground());
	
	gl::begin(gl::LineLoop);
	gl::vertex(pos[0], pos[1]);
	gl::vertex(pos[0] + hb_width, pos[1]);
	gl::vertex(pos[0] + hb_width, pos[1] + hb_height);
	gl::vertex(pos[0], pos[1] + hb_height);
	gl::end();
}

bool HUDEngineStatus::on_keypress(const int key, const unsigned int modifier)
{
	return false;
}

} // namespace client