From e55638d081e2e1ff6fbc06e0e8ac0381a04308e7 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Wed, 15 Sep 2010 21:29:18 +0000
Subject: updated comments, updated buy menu, info support for map window,
 added const to target selection

---
 src/client/Makefile.am     |  8 ++--
 src/client/buymenu.cc      | 91 +++++++++++++++++++++-------------------------
 src/client/buymenu.h       |  9 ++---
 src/client/chat.cc         | 30 ++++++++++++++-
 src/client/chat.h          |  4 ++
 src/client/client.h        |  6 +--
 src/client/hud.cc          |  2 +-
 src/client/infowidget.cc   |  2 +-
 src/client/input.cc        |  2 +-
 src/client/map.cc          | 76 +++++++++++++++++++++++++++++++-------
 src/client/map.h           | 20 ++++++++--
 src/client/playerview.cc   |  4 --
 src/client/targets.cc      | 26 ++++++-------
 src/client/targets.h       | 10 ++---
 src/client/trademenu.cc    |  8 +++-
 src/client/trademenu.h     |  9 ++++-
 src/core/commandbuffer.cc  |  4 +-
 src/core/entity.h          | 43 +++++++++++++++-------
 src/core/gameconnection.cc | 16 +++-----
 src/core/info.h            | 14 +++----
 src/core/inventory.h       |  6 +--
 src/core/item.h            | 11 +++++-
 src/math/functions.cc      |  6 +--
 src/math/functions.h       |  9 ++---
 src/render/draw.cc         |  2 +-
 src/render/draw.h          |  2 +-
 src/render/tgafile.cc      | 15 ++++----
 src/ui/container.cc        |  6 +--
 src/ui/widget.cc           | 19 ++++++++++
 src/ui/widget.h            | 51 ++++++++++++++++++++------
 30 files changed, 332 insertions(+), 179 deletions(-)

(limited to 'src')

diff --git a/src/client/Makefile.am b/src/client/Makefile.am
index a90bfdb..3169525 100644
--- a/src/client/Makefile.am
+++ b/src/client/Makefile.am
@@ -8,16 +8,16 @@ noinst_LTLIBRARIES = libclient.la
 endif
 
 libclient_la_SOURCES = action.cc buymenu.cc chat.cc client.cc clientext.cc \
-	entitymenu.cc hud.cc infowidget.cc input.cc joystick.cc key.cc keyboard.cc map.cc \
-	notifications.cc playerview.cc soundext.cc targeticonbutton.cc targets.cc trademenu.cc \
-	video.cc worldview.cc
+	entitymenu.cc hud.cc infowidget.cc input.cc inventorywindow.cc joystick.cc key.cc \
+	keyboard.cc map.cc notifications.cc playerview.cc soundext.cc targeticonbutton.cc \
+	targets.cc trademenu.cc video.cc worldview.cc
 
 libclient_la_CFLAGS = $(LIBSDL_CFLAGS) $(GL_CFLAGS)
 
 libclient_la_LDFLAGS = -avoid-version -no-undefined $(GL_LIBS) $(LIBSDL_LIBS)
 
 noinst_HEADERS = action.h chat.h client.h clientext.h hud.h entitymenu.h \
-	input.h joystick.h key.h keyboard.h map.h notifications.h soundext.h \
+	input.h inventorywindow.h joystick.h key.h keyboard.h map.h notifications.h soundext.h \
 	targets.h video.h infowidget.h playerview.h worldview.h trademenu.h buymenu.h \
 	targeticonbutton.h
 
diff --git a/src/client/buymenu.cc b/src/client/buymenu.cc
index d708511..c3878a8 100644
--- a/src/client/buymenu.cc
+++ b/src/client/buymenu.cc
@@ -16,50 +16,42 @@ namespace client
 BuyMenu::BuyMenu(ui::Widget *parent, const char * label) : ui::Window(parent)
 {
 	set_border(false);
-	set_background(true);
+	set_background(false);
 
 	if (label)
 		set_label(label);
 	else
 		set_label("buymenu");
 
-	// model pane (left)
-	menu_modelpane = new ui::Window(this);
-	menu_modelpane->set_label("modelpane");
-	menu_modelpane->set_background(true);
-	menu_modelpane->set_border(true);
-
-	menu_modelview = new ui::ModelView(menu_modelpane);
-	menu_modelview->set_label("modelview");
-	menu_modelview->set_background(false);
-	menu_modelview->set_border(false);
-
-	menu_closebutton = new ui::Button(menu_modelpane, "Return", "view hide");
-
-	// text pane (right)
-	menu_textpane = new ui::Window(this);
-	menu_textpane->set_label("textpane");
-	menu_textpane->set_background(true);
-	menu_textpane->set_border(true);
+	
+	menu_buywindow = new ui::Window(this);
+	menu_buywindow->set_label("buywindow");
+	menu_buywindow->set_background(true);
+	menu_buywindow->set_border(true);
 
-	menu_namelabel = new ui::Label(menu_textpane);
+	menu_namelabel = new ui::Label(menu_buywindow);
 	menu_namelabel->set_label("infolabel");
 	menu_namelabel->set_background(false);
 	menu_namelabel->set_border(false);
 	menu_namelabel->set_font(ui::root()->font_large());
 	menu_namelabel->set_alignment(ui::AlignCenter);
 
-	menu_scrollpane = new ui::ScrollPane(menu_textpane, menu_infotext);
+	menu_modelview = new ui::ModelView(menu_buywindow);
+	menu_modelview->set_label("modelview");
+	menu_modelview->set_background(false);
+	menu_modelview->set_border(false);
+
+	menu_scrollpane = new ui::ScrollPane(menu_buywindow, menu_infotext);
 	menu_scrollpane->set_background(false);
 	menu_scrollpane->set_border(false);
 	menu_scrollpane->set_alignment(ui::AlignTop);
 
-	menu_buybutton = new ui::Button(menu_textpane, "Buy");
+	menu_closebutton = new ui::Button(menu_buywindow, "Return", "view hide");
+	menu_buybutton = new ui::Button(menu_buywindow, "Buy");
 
 	menu_infotimestamp = 0;
 	menu_inforecord = 0;
 
-	menu_modelpane->raise(); // DEBUG
 	hide();
 }
 
@@ -89,7 +81,7 @@ void BuyMenu::set_item(std::string const & itemtype, std::string const & itemnam
 		menu_namelabel->set_text(menu_inforecord->name());
 		menu_modelview->set_modelname(menu_inforecord->modelname());
 
-		for (core::Info::Text::iterator it = menu_inforecord->text().begin(); it != menu_inforecord->text().end(); it++) {
+		for (core::Info::Text::const_iterator it = menu_inforecord->text().begin(); it != menu_inforecord->text().end(); it++) {
 			menu_infotext.push_back((*it));
 		}
 		menu_infotimestamp = menu_inforecord->timestamp();
@@ -103,34 +95,35 @@ void BuyMenu::set_item(std::string const & itemtype, std::string const & itemnam
 void BuyMenu::resize()
 {
 	const float smallmargin = ui::UI::elementsize.height();
+	const float fontmargin = menu_namelabel->font()->height();
 
+	// this menu takes the entire screen
 	set_size(parent()->size());
-
-	// reposition model pane (left)
-	menu_modelpane->set_size(ui::UI::elementsize.width() * 1.5f, height() -  smallmargin * 4.0f);
-	menu_modelpane->set_location(smallmargin, smallmargin * 2.0f);
-
+	
+	// resize the subwindow
+	menu_buywindow->set_size(width() - smallmargin * 2.0f, height()- smallmargin * 4.0f);
+	menu_buywindow->set_location(smallmargin, smallmargin * 2.0f);
+
+	// resize label
+	menu_namelabel->set_size(menu_buywindow->width() - fontmargin * 2.0f, menu_namelabel->font()->height());	
+	menu_namelabel->set_location(fontmargin, fontmargin);
+
+	// resize model view	
+	menu_modelview->set_size(ui::UI::elementsize.width() * 1.5f, 
+				 menu_buywindow->height() - smallmargin * 2.0f - fontmargin * 3.0f);
+	menu_modelview->set_location(fontmargin, fontmargin * 3.0f);
+
+	// resize infotext pane
+	menu_scrollpane->set_size(menu_buywindow->width() - ui::UI::elementsize.width() * 1.5f - fontmargin * 3.0f, 
+				  menu_buywindow->height() - smallmargin * 2.0f - fontmargin * 3.0f);
+	menu_scrollpane->set_location(ui::UI::elementsize.width() * 1.5f + fontmargin * 2.0f, fontmargin * 3.0f);
+	
+	// resize buttons
+	menu_buybutton->set_size(ui::UI::elementsize);	
+	menu_buybutton->set_location(menu_buywindow->width() * 0.5f - ui::UI::elementsize.width() - smallmargin * 2.0f, menu_buywindow->height() - smallmargin * 1.5f);
+	
 	menu_closebutton->set_size(ui::UI::elementsize);
-	menu_closebutton->set_location((menu_modelpane->width() - menu_closebutton->width()) * 0.5f,
-				       menu_modelpane->height() - menu_closebutton->height() -  ui::UI::elementsize.height() * 0.5f);
-
-	menu_modelview->set_size(menu_modelpane->width() - 8, menu_modelpane->width() - 8);
-	menu_modelview->set_location(4, 4);
-
-	// reposition text pane (right)
-	menu_textpane->set_size(width() - smallmargin * 3.0f - menu_modelpane->width(),  height() -  smallmargin * 4.0f);
-	menu_textpane->set_location(smallmargin * 2.0f + menu_modelpane->width(), smallmargin * 2.0f);
-
-	menu_buybutton->set_size(ui::UI::elementsize);
-	menu_buybutton->set_location((menu_textpane->width() - menu_buybutton->width()) * 0.5f,
-				     menu_textpane->height() - menu_buybutton->height() -  ui::UI::elementsize.height() * 0.5f);
-
-	menu_namelabel->set_size(menu_textpane->width(), menu_namelabel->font()->height() * 2.0f);
-	menu_namelabel->set_location(0, 4);
-
-	menu_scrollpane->set_size(menu_textpane->width() - 8, menu_buybutton->top() - menu_namelabel->bottom() - 8);
-	menu_scrollpane->set_location(4,  menu_namelabel->bottom() + 4);
-
+	menu_closebutton->set_location(menu_buywindow->width() * 0.5f + smallmargin * 2.0f, menu_buywindow->height() - smallmargin * 1.5f);
 }
 
 void BuyMenu::draw()
diff --git a/src/client/buymenu.h b/src/client/buymenu.h
index f624ec3..016f473 100644
--- a/src/client/buymenu.h
+++ b/src/client/buymenu.h
@@ -39,22 +39,21 @@ protected:
 	virtual bool on_keypress(const int key, const unsigned int modifier);
 private:
 
-	ui::Window		*menu_modelpane;
-	ui::Window		*menu_textpane;
+	ui::Window		*menu_buywindow;
 	ui::Label		*menu_namelabel;
 	ui::ScrollPane		*menu_scrollpane;
+	ui::ModelView		*menu_modelview;
 
 	ui::Button		*menu_closebutton;
 	ui::Button		*menu_buybutton;
 
-	ui::ModelView		*menu_modelview;
-
 	std::string		menu_itemtype;
 	std::string		menu_itemname;
 
 	core::Info		*menu_inforecord;
 	ui::Text		menu_infotext;
-	unsigned long	menu_infotimestamp;
+	
+	unsigned long		menu_infotimestamp;
 };
 
 }
diff --git a/src/client/chat.cc b/src/client/chat.cc
index 5eb1922..c1fc78f 100644
--- a/src/client/chat.cc
+++ b/src/client/chat.cc
@@ -8,6 +8,7 @@
 #include "client/chat.h"
 #include "client/client.h"
 #include "core/core.h"
+#include "core/gameinterface.h"
 #include "sys/sys.h"
 #include "ui/ui.h"
 
@@ -26,6 +27,12 @@ Chat::Chat(ui::Widget *parent) : ui::Window(parent)
 
 	chat_scrollpane = new ui::ScrollPane(this, chat_log);
 	chat_scrollpane->set_border(false);
+	chat_scrollpane->set_label("text");
+	
+	chat_playerpane = new ui::ScrollPane(this, chat_players);
+	chat_playerpane->set_border(false);
+	chat_playerpane->set_label("players");
+	chat_playerpane->set_alignment(ui::AlignLeft | ui::AlignTop);
 
 	chat_input = new ui::InputBox(this);
 	chat_input->set_border(false);
@@ -46,6 +53,7 @@ Chat::~Chat()
 
 void Chat::clear()
 {
+	chat_players.clear();
 	chat_log.clear();
 	chat_input->clear();
 }
@@ -172,10 +180,24 @@ void Chat::event_draw()
 	}
 
 	if (chat_small) {
+		chat_playerpane->hide();
 		chat_scrollpane->hide();
 	} else {
+		chat_playerpane->show();
 		chat_scrollpane->show();
+		
+		chat_players.clear();
+		std::ostringstream ostr;
+		
+		ostr << "^B" <<  core::game()->players().size() << " " << aux::plural("player", core::game()->players().size());
+		chat_players.push_back(ostr.str());
+		
+		for (core::GameInterface::Players::iterator it = core::game()->players().begin(); it != core::game()->players().end(); it++) {
+			core::Player *player = (*it);
+			chat_players.push_back(player->name() + "^N");
+		}
 	}
+	
 	Widget::event_draw();
 }
 
@@ -187,9 +209,15 @@ void Chat::resize()
 	s[0] -= margin * 2;
 	s[1] -= margin * 2;
 
+	// player names
+	chat_playerpane->set_size(ui::UI::elementsize.width() , s.height() - font()->height() * 2.5f);
+	chat_playerpane->set_location(s.width() - chat_playerpane->width() + 2.0f * margin, margin + font()->height());
+
+	// chat text
+	chat_scrollpane->set_size(s.width() - chat_playerpane->width() - margin, s.height() - font()->height() * 1.5f);
 	chat_scrollpane->set_location(margin, margin);
-	chat_scrollpane->set_size(s.width(), s.height() - font()->height() *1.5f);
 
+	// input bar
 	chat_input->set_location(margin, height() - font()->height() - margin);
 	chat_input->set_size(s.width(), font()->height());
 }
diff --git a/src/client/chat.h b/src/client/chat.h
index 41837c5..61f5bd1 100644
--- a/src/client/chat.h
+++ b/src/client/chat.h
@@ -48,6 +48,10 @@ private:
 
 	ui::Text 		chat_log;
 	ui::ScrollPane		*chat_scrollpane;
+	
+	ui::Text 		chat_players;
+	ui::ScrollPane		*chat_playerpane;
+	
 	ui::InputBox		*chat_input;
 
 	typedef std::deque<std::string> History;
diff --git a/src/client/client.h b/src/client/client.h
index fd762c6..2de731d 100644
--- a/src/client/client.h
+++ b/src/client/client.h
@@ -98,17 +98,17 @@ private:
 
 Client *client();
 
-inline ClientExt *ext_client(core::Entity *entity)
+inline ClientExt *ext_client(const core::Entity *entity)
 {
 	return static_cast<ClientExt *>(entity->extension(core::Extension::Client));
 }
 
-inline SoundExt *ext_sound(core::Entity *entity)
+inline SoundExt *ext_sound(const core::Entity *entity)
 {
 	return static_cast<SoundExt *>(entity->extension(core::Extension::Sound));
 }
 
-inline render::RenderExt *ext_render(core::Entity *entity)
+inline render::RenderExt *ext_render(const core::Entity *entity)
 {
 	return static_cast<render::RenderExt *>(entity->extension(core::Extension::Render));
 }
diff --git a/src/client/hud.cc b/src/client/hud.cc
index c42431c..3a7601b 100644
--- a/src/client/hud.cc
+++ b/src/client/hud.cc
@@ -285,7 +285,7 @@ void HUD::draw()
 	}
 	*/
 
-	core::Entity *target = targets::current();
+	const core::Entity *target = targets::current();
 	std::stringstream strdistance;
 
 	if (target) {
diff --git a/src/client/infowidget.cc b/src/client/infowidget.cc
index cf7c684..3081b8d 100644
--- a/src/client/infowidget.cc
+++ b/src/client/infowidget.cc
@@ -44,7 +44,7 @@ DevInfoWidget::DevInfoWidget(ui::Widget *parent) : ui::Widget(parent)
 void DevInfoWidget::draw()
 {
 	std::stringstream textstream;
-	core::Entity *target = targets::current();
+	const core::Entity *target = targets::current();
 	float d = 0;
 
 	textstream << "^Ncore ^B";
diff --git a/src/client/input.cc b/src/client/input.cc
index e8f0725..16ba048 100644
--- a/src/client/input.cc
+++ b/src/client/input.cc
@@ -583,7 +583,7 @@ void key_released(Key *key)
 		// note: mouse button can double as an action key
 		if ((key->sym() ==  512 + SDL_BUTTON_LEFT) && targets::hover() && (key->waspressed() <= (input_mousedelay->value() / 1000.0f))) {
 			// hovering target selected
-			targets::select_target(targets::hover());
+			targets::set_target(targets::hover());
 		}
 		
 		if (key->action()) {
diff --git a/src/client/map.cc b/src/client/map.cc
index 7a6fedc..34dcb40 100644
--- a/src/client/map.cc
+++ b/src/client/map.cc
@@ -32,8 +32,13 @@ Map::Map(ui::Widget *parent) : ui::Window(parent)
 	map_targetlabel->set_border(false);
 	map_targetlabel->set_font(ui::root()->font_large());
 	map_targetlabel->set_alignment(ui::AlignCenter);
+	
+	map_scrollpane = new ui::ScrollPane(this, map_infotext);
+	map_scrollpane->set_background(false);
+	map_scrollpane->set_border(false);
+	map_scrollpane->set_alignment(ui::AlignTop);
 
-	map_target = 0;
+	set_target(0);
 	map_hover = 0;
 	hide();
 }
@@ -68,14 +73,29 @@ void Map::toggle()
 		show();
 }
 
+void Map::resize()
+{
+	const float fontmargin = map_targetlabel->font()->height();
+	
+	// resize label
+	map_targetlabel->set_size(width() - fontmargin * 2.0f, fontmargin);
+	map_targetlabel->set_location(fontmargin, fontmargin);
+	
+	// resize infotext pane
+	map_scrollpane->set_size(width() - ui::UI::elementsize.width() * 1.5f - fontmargin * 3.0f, 
+				  height() - ui::UI::elementsize.height() * 2.0f - fontmargin * 3.0f);
+	map_scrollpane->set_location(ui::UI::elementsize.width() * 1.5f + fontmargin * 2.0f, fontmargin * 3.0f);
+}
+
 void Map::draw()
 {
-	const float margin = font()->width() * 2.0f;
-	const float s = ui::UI::elementsize.width() * 2.0f;
+	const float fontmargin = map_targetlabel->font()->height();
+	const float s = ui::UI::elementsize.width() * 1.5f;
+	
 	const float blue = 0.8f;
 	const float gridsize = 16;
 
-	core::Entity *entity;
+	const core::Entity *entity;
 	const core::Entity *current_target = map_target;
 	map_target = 0;
 
@@ -84,8 +104,8 @@ void Map::draw()
 	math::Vector2f v(global_location());
 	math::Vector2f l;
 
-	v[0] += margin;
-	v[1] += (height() - s - 2.0f * margin) * 0.5f;
+	v[0] += fontmargin;
+	v[1] += fontmargin + (height() - s) * 0.5f;
 	map_hover = 0;
 
 	gl::color(0, 0, blue);
@@ -147,20 +167,20 @@ void Map::draw()
 		if (draw_icon) {
 			if (entity->type() == core::Entity::Globe) {
 				if (entity->flag_is_set(core::Entity::Bright)) {
-					if (texture_current  != texture_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) {
+					if (texture_current != texture_globe) {
 						gl::end();
 						texture_current = render::Textures::bind(texture_globe);
 						gl::begin(gl::Quads);
 					}
 				}
 			} else {
-				if (texture_current  != texture_entity) {
+				if (texture_current != texture_entity) {
 					gl::end();
 					texture_current = render::Textures::bind(texture_entity);
 					gl::begin(gl::Quads);
@@ -224,13 +244,42 @@ void Map::draw()
 	gl::end();
 	gl::disable(GL_TEXTURE_2D);
 
+	if (map_target != current_target) {
+		// this makes sure the map target exists
+		set_target(current_target);
+		
+	} else if (map_infotimestamp && map_inforecord && (map_infotimestamp != map_inforecord->timestamp())) {
+		set_target(map_target);
+	}
+}
+
+void Map::set_target(const core::Entity *entity) {
+	
+	map_target = entity;
+	map_infotimestamp = 0;
+	map_inforecord = 0;	
+	map_infotext.clear();
+	
 	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);
+		// set title label to target name
 		map_targetlabel->set_text(map_target->name());
 		map_targetlabel->show();
+	
+		map_inforecord = map_target->info();
+		
+		if (map_inforecord) {
+			for (core::Info::Text::const_iterator it = map_inforecord->text().begin(); it != map_inforecord->text().end(); it++) {
+				map_infotext.push_back((*it));
+			}		
+			map_infotimestamp = map_inforecord->timestamp();
+		} else {
+			map_infotext.push_back("Information is not available");
+		}
+		
+		map_scrollpane->show();		
 	} else {
 		map_targetlabel->hide();
+		map_scrollpane->hide();
 	}
 }
 
@@ -240,9 +289,8 @@ bool Map::on_keypress(const int key, const unsigned int modifier)
 		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");
+				set_target(target);
+				targets::set_target(map_target);
 			}
 		}
 		return true;
diff --git a/src/client/map.h b/src/client/map.h
index 1fc1547..e0d8a2d 100644
--- a/src/client/map.h
+++ b/src/client/map.h
@@ -7,9 +7,11 @@
 #ifndef __INCLUDED_CLIENT_MAP_H__
 #define __INCLUDED_CLIENT_MAP_H__
 
-#include "ui/window.h"
-#include "ui/label.h"
 #include "core/entity.h"
+#include "core/info.h"
+#include "ui/label.h"
+#include "ui/scrollpane.h"
+#include "ui/window.h"
 
 namespace client
 {
@@ -24,6 +26,9 @@ public:
 		return map_hover;
 	}
 
+	/// set the map target
+	void set_target(const core::Entity *entity);
+	
 	/// toggle the map window
 	void toggle();
 
@@ -37,12 +42,19 @@ public:
 	virtual bool on_keypress(const int key, const unsigned int modifier);
 
 protected:
+	virtual void resize();
+	
 	virtual void draw();
 
+	ui::Label		*map_targetlabel;
+	ui::ScrollPane		*map_scrollpane;
+
 	unsigned int		map_hover;
+	const core::Entity	*map_target;
 
-	core::Entity		*map_target;
-	ui::Label		*map_targetlabel;
+	const core::Info	*map_inforecord;	
+	unsigned long		map_infotimestamp;	
+	ui::Text		map_infotext;
 };
 
 
diff --git a/src/client/playerview.cc b/src/client/playerview.cc
index 7ec8031..578e97f 100644
--- a/src/client/playerview.cc
+++ b/src/client/playerview.cc
@@ -146,7 +146,6 @@ void PlayerView::show_menu(const std::string & args)
 
 void PlayerView::resize()
 {
-	//const float largemargin = ui::UI::elementsize.width() * 0.25;
 	const float smallmargin = ui::UI::elementsize.height();
 
 	set_size(parent()->size());
@@ -166,9 +165,6 @@ void PlayerView::resize()
 	view_notify->set_geometry(view_map->location(), view_map->size());
 
 	// reposition labels
-	//label_viewname->set_size(ui::UI::elementsize.width() * 1.5f, ui::UI::elementsize.height());
-	//label_viewname->set_location(smallmargin, smallmargin * 0.5f);
-
 	label_viewname->set_size(ui::UI::elementsize.width() * 1.5f, ui::UI::elementsize.height());
 	label_viewname->set_location(width() - label_viewname->width() - smallmargin, height() - label_viewname->height() - smallmargin * 0.5f);
 }
diff --git a/src/client/targets.cc b/src/client/targets.cc
index cc7f29f..46643bb 100644
--- a/src/client/targets.cc
+++ b/src/client/targets.cc
@@ -38,9 +38,9 @@ const float TARGETBOXRADIUS = 0.025f;
 unsigned int current_target_id = 0;
 unsigned int current_hover = 0;
 
-core::Entity *current_target = 0;
+const core::Entity *current_target = 0;
 
-bool is_valid_hud_target(core::Entity *entity)
+bool is_valid_hud_target(const core::Entity *entity)
 {
 	if (entity->serverside()) {
 		return false;
@@ -53,7 +53,7 @@ bool is_valid_hud_target(core::Entity *entity)
 	}
 }
 
-bool is_valid_map_target(core::Entity *entity)
+bool is_valid_map_target(const core::Entity *entity)
 {
 	if (entity->serverside()) {
 		return false;
@@ -68,7 +68,7 @@ bool is_valid_map_target(core::Entity *entity)
 	}
 }
 
-core::Entity* current()
+const core::Entity* current()
 {
 	return current_target;
 }
@@ -83,7 +83,7 @@ unsigned int hover()
 	return current_hover;
 }
 
-void select_target(core::Entity *entity)
+void set_target(const core::Entity *entity)
 {
 	current_target = entity;
 	if (entity) {
@@ -94,7 +94,7 @@ void select_target(core::Entity *entity)
 	}
 }
 
-void select_target(unsigned int id)
+void set_target(unsigned int id)
 {
 	if (!core::localcontrol())
 		return;
@@ -105,7 +105,7 @@ void select_target(unsigned int id)
 	core::Entity *entity = zone->find_entity(id);
 
 	if (entity && is_valid_hud_target(entity))
-		select_target(entity);
+		set_target(entity);
 }
 
 void func_target_next(std::string const &args)
@@ -154,7 +154,7 @@ void func_target_next(std::string const &args)
 	}
 
 	if (it !=  zone->content().end()) {
-		select_target((*it));
+		set_target((*it));
 	} else {
 		current_target = 0;
 		current_target_id = 0;
@@ -206,7 +206,7 @@ void func_target_prev(std::string const &args)
 	}
 
 	if (rit != zone->content().rend()) {
-		select_target((*rit));
+		set_target((*rit));
 	} else {
 		current_target = 0;
 		current_target_id = 0;
@@ -225,12 +225,12 @@ void func_target_center(std::string const &args)
 		return;
 
 	// this is essentialy the hover algorithm with the cursor in the center
-	core::Entity *new_target = 0;
+	const core::Entity *new_target = 0;
 	math::Vector3f center = render::Camera::eye() + render::Camera::axis().forward() * (render::FRUSTUMFRONT + 0.001);
 	float smallest_d = -1;
 
-	for (core::Zone::Content::iterator it = core::localcontrol()->zone()->content().begin(); it != core::localcontrol()->zone()->content().end(); it++) {
-		core::Entity *entity = (*it);
+	for (core::Zone::Content::const_iterator it = core::localcontrol()->zone()->content().begin(); it != core::localcontrol()->zone()->content().end(); it++) {
+		const core::Entity *entity = (*it);
 
 		math::Vector3f v(entity->location() - render::Camera::eye());
 		v.normalize();
@@ -249,7 +249,7 @@ void func_target_center(std::string const &args)
 	}
 
 	if (new_target)
-		select_target(new_target);
+		set_target(new_target);
 }
 
 void reset()
diff --git a/src/client/targets.h b/src/client/targets.h
index 5a3a655..e66ff97 100644
--- a/src/client/targets.h
+++ b/src/client/targets.h
@@ -25,16 +25,16 @@ void shutdown();
 void reset();
 
 /// return true if the entity is a legal hud target
-bool is_valid_hud_target(core::Entity *entity);
+bool is_valid_hud_target(const core::Entity *entity);
 
 /// return true if the entity is a legal map target
-bool is_valid_map_target(core::Entity *entity);
+bool is_valid_map_target(const core::Entity *entity);
 
 /// render targets and sounds
 void frame();
 
 /// currently selected target, 0 if there is none
-core::Entity *current();
+const core::Entity *current();
 
 /// id of the currently selected target, 0 if there is none
 unsigned int current_id();
@@ -43,10 +43,10 @@ unsigned int current_id();
 unsigned int hover();
 
 /// target a specific entity
-void select_target(unsigned int id);
+void set_target(unsigned int id);
 
 /// target a specific entity
-void select_target(core::Entity *entity);
+void set_target(const core::Entity *entity);
 
 }
 
diff --git a/src/client/trademenu.cc b/src/client/trademenu.cc
index dcab2f1..c60791f 100644
--- a/src/client/trademenu.cc
+++ b/src/client/trademenu.cc
@@ -12,15 +12,19 @@
 namespace client
 {
 
-TradeMenu::TradeMenu(ui::Widget *parent, const char * label) : ui::Window(parent)
+TradeMenu::TradeMenu(ui::Window *parent, const char * label) : ui::Window(parent)
 {
 	set_border(false);
-	set_background(false);
+	set_background(false);	
 	if (label)
 		set_label(label);
 	else
 		set_label("trademenu");
 
+	menu_tradewindow = new ui::Window(this);
+	menu_tradewindow->set_label("tradewindow");
+	menu_tradewindow->set_border(true);
+
 	hide();
 }
 
diff --git a/src/client/trademenu.h b/src/client/trademenu.h
index baf3544..03b5077 100644
--- a/src/client/trademenu.h
+++ b/src/client/trademenu.h
@@ -19,8 +19,15 @@ class TradeMenu : public ui::Window
 {
 public:
 	/// create a new menu
-	TradeMenu(ui::Widget *parent, const char * label = 0);
+	TradeMenu(ui::Window *parent, const char * label = 0);
 	~TradeMenu();
+
+protected:
+	/// resize event
+	virtual void resize();
+
+private:
+	ui::Window		*menu_tradewindow;
 };
 
 }
diff --git a/src/core/commandbuffer.cc b/src/core/commandbuffer.cc
index 00a3486..3c7fc35 100644
--- a/src/core/commandbuffer.cc
+++ b/src/core/commandbuffer.cc
@@ -79,7 +79,7 @@ void func_list_info(std::string const &args)
 			return;
 		}
 		
-		con_print << "Unkown info record '" << typestr << "'" << std::endl;
+		con_print << "Unknown info record '" << typestr << "'" << std::endl;
 		
 	} else {
 		// two arguments
@@ -97,7 +97,7 @@ void func_list_info(std::string const &args)
 			return;
 		}
 		
-		con_print << "Unkown info record '" << typestr << "' for type '" << typestr << "'" << std::endl;
+		con_print << "Unknown info record '" << labelstr << "' for type '" << typestr << "'" << std::endl;
 	}
 }
 
diff --git a/src/core/entity.h b/src/core/entity.h
index 1bc93a1..5ddce3a 100644
--- a/src/core/entity.h
+++ b/src/core/entity.h
@@ -92,7 +92,7 @@ public:
 	}
 
 	/// pointer to the model, is used client-side
-	inline model::Model * model() {
+	inline model::Model * model() const {
 		return entity_model;
 	}
 
@@ -197,23 +197,31 @@ public:
 		entity_color_second.assign(color);
 	}
 
-	/// set dirty flag
+	/**
+	 * @brief set dirty flag
+	 * setting the dirty flag will cause the server to broadcast changes
+	 * to the clients.
+	 */
 	inline void set_dirty(const bool dirty = true) {
 		entity_dirty = dirty;
 	}
 
-	/// mark the entity as destroyed
+	/**
+	 * @brief mark the entity as destroyed
+	 * die() should be called by the game module when it needs to destroy an entity,
+	 * the game server will broadcast the delete event to the clients.
+	 * The game module should not delete an entity directly.
+	 */
 	virtual void die();
 
-	/// runs one game frame for the entity
 	/**
+	 * @brief runs one game frame for the entity
 	 * The default implementation does nothing
 	 */
 	virtual void frame(float seconds);
 
 	/**
 	 * @brief set the zone the entity is currently in
-	 *
 	 * this fuction removes the entity from its previous zone
 	 * and removes it to the new one, if it is not 0
 	 */
@@ -552,8 +560,8 @@ public:
 	/// set afterburner/reverse
 	void set_afterburner(float afterburner);
 
-	/// runs one game frame for the entity
 	/**
+	 * @brief runs one game frame for the entity
 	 * The default implementation will set direction() and thrust() to the desired targets
 	 * and calls its parent frame() funcion.
 	 */
@@ -564,18 +572,27 @@ public:
 
 protected:
 	/* target_ variables can be set by the client */
-	/// target thrust as set by the client
+	
+	/**
+	 * @brief target thrust as set by the client
+	 */
 	float			target_thrust;
-	/// target direction as set by the client
-	/** target_direction must be in the [-1, 1] range
+	
+	/** 
+	 * @brief target direction as set by the client
+	 * target_direction must be in the [-1, 1] range
 	 */
 	float			target_direction;
-	/// target pitch as set by the client
-	/** target_pitch must be in the [-1, 1] range
+	
+	/**
+	 * @brief target pitch as set by the client
+	 * target_pitch must be in the [-1, 1] range
 	 */
 	float 			target_pitch;
-	/// target roll as set by the client
-	/** target_roll must be in the [-1, 1] range
+	
+	/**
+	 * @brief target roll as set by the client
+	 * target_roll must be in the [-1, 1] range
 	 */
 	float 			target_roll;
 
diff --git a/src/core/gameconnection.cc b/src/core/gameconnection.cc
index 46b50f5..ce33dc6 100644
--- a/src/core/gameconnection.cc
+++ b/src/core/gameconnection.cc
@@ -105,7 +105,7 @@ Info *GameConnection::info(unsigned int id)
 			return info;
 	} else {
 		info = new Info(id);
-		info->text().push_back("Requesting information...");
+		info->add_text("Requesting information...");
 	}
 
 	
@@ -113,12 +113,11 @@ Info *GameConnection::info(unsigned int id)
 	if (connection_network) {
 		//con_debug << "Requesting info for " << info->id() << std::endl;
 		info->set_timestamp(connection_timestamp);
-		info->set_id(0);
-		
+
 		connection_network->send_info_request(info);
 		connection_network->transmit();
 	} else {
-		info->text().push_back("^RNot connected.");
+		info->add_text("^RNot connected.");
 		info->set_timestamp(0);
 	}
 	return info;
@@ -151,21 +150,18 @@ Info *GameConnection::info(const std::string &type, const std::string &label)
 			return info;
 	} else {
 		// create a new info record and set the label
-		info = new Info(infotype);
-		info->set_label(label);
-		info->text().push_back("Requesting information...");
+		info = new Info(infotype, label);
+		info->add_text("Requesting information...");
 	}
 
 	// send an information request to the server
 	if (connection_network) {
 		//con_debug << "Requesting info for " << info->type()->label() << ":" << info->label() << std::endl;
 		info->set_timestamp(connection_timestamp);
-		info->set_id(0);
-
 		connection_network->send_info_request(info);
 		connection_network->transmit();
 	} else {
-		info->text().push_back("^RNot connected.");
+		info->add_text("^RNot connected.");
 		info->set_timestamp(0);
 	}
 	return info;
diff --git a/src/core/info.h b/src/core/info.h
index 8b9a89b..8822f2f 100644
--- a/src/core/info.h
+++ b/src/core/info.h
@@ -19,14 +19,14 @@ namespace core
 {
 
 /**
- * @brief an information record type
+ * @brief an information card category
  * The InfoType groups information records of the same type
  */
 class InfoType : public Label
 {
 public:
 	/**
-	 * @brief create a new information record type
+	 * @brief create a new information card category
 	 * The constructor automaticly adds the instance to the registry
 	 */
 	InfoType(const char* label);
@@ -49,7 +49,7 @@ private:
 }; // class InfoType
 
 /**
- * @brief an information record
+ * @brief an information card
  * An information record holds extended information about a specific entity or item class.
  * This information is exchanged between server and the client, and can be used to build 
  * HUD widgets.
@@ -61,19 +61,19 @@ public:
 	typedef std::deque<std::string> Text;
 	
 	/**
-	 * @brief create a new server-side information record
+	 * @brief create a new server-side information card
 	 * This constructor assigns an id
 	 */
 	Info(const InfoType *type);
 
 	/**
-	 * @brief create a new client-side information record
+	 * @brief create a new client-side information card
 	 * This constructor doesn not assign an id
 	 */
 	Info(const InfoType *type, const std::string & label);
 
 	/**
-	 * @brief create a new client-side information record
+	 * @brief create a new client-side information card
 	 */
 	Info(const unsigned int id);
 	
@@ -107,7 +107,7 @@ public:
 	}
 
 	/// text description
-	inline Text & text() {
+	inline const Text & text() const {
 		return info_text;
 	}
 
diff --git a/src/core/inventory.h b/src/core/inventory.h
index a451dc7..da30715 100644
--- a/src/core/inventory.h
+++ b/src/core/inventory.h
@@ -47,12 +47,12 @@ public:
 
 	/**
 	 * @brief removes all items from the inventory and delete them
-	 */	
+	 */
 	 void clear();
 	 
 	 /**
-	 * @brief search the inventory for a specific item type
-	 */	
+	  * @brief search the inventory for a specific item type
+	  */
 	 Item *find(const Info *info);
 	 
 private:
diff --git a/src/core/item.h b/src/core/item.h
index 21eae87..397d259 100644
--- a/src/core/item.h
+++ b/src/core/item.h
@@ -19,6 +19,8 @@ namespace core
 class Item
 {
 public:
+	enum Flags { Mount = 1, Trade = 2 };
+	
 	Item(const Info *info);
 	
 	~Item();
@@ -31,10 +33,15 @@ public:
 	 inline int amount() const { return item_amount; }
 
 	/**
-	 * @brief information record
+	 * @brief information card
 	 */
 	 inline const Info *info() const { return item_info; }
 	 
+	 /**
+	  * @brief flags
+	  */
+	 inline int flags() const { return item_flags; }
+	 
 	/* ---- mutators ----------------------------------------------- */
 
 	/**
@@ -45,6 +52,8 @@ public:
 private:
 	const Info			*item_info;
 	int 				item_amount;
+	
+	int				item_flags;
 };
 
 } // namespace core
diff --git a/src/math/functions.cc b/src/math/functions.cc
index c4b832c..7fb40be 100644
--- a/src/math/functions.cc
+++ b/src/math/functions.cc
@@ -66,10 +66,10 @@ float sgnf(float value)
 {
 	if (value < 0)
 		return -1;
-	else if (value == 0)
-		return 0;
+	else if (value > 0)
+		return 1;
 
-	return 1;
+	return 0;
 }
 
 } // namespace math
diff --git a/src/math/functions.h b/src/math/functions.h
index c301969..5a53d44 100644
--- a/src/math/functions.h
+++ b/src/math/functions.h
@@ -31,7 +31,7 @@ int max(int a, int b);
 /** The value returned will be in the interval [0-max]
  *  @param max the maximum value returned
  **/
-float randomf(const float max = 1);
+float randomf(const float max = 1.0f);
 
 /// returns a random integer
 /** The value returned will be in the interval [0-(max-1)]
@@ -58,12 +58,9 @@ inline void clamp(float &value, const float min = 0.0f, const float max = 1.0f)
 }
 
 /// return the absolute value of a float
-inline float absf(float f)
+inline float absf(const float f)
 {
-	if (f < 0)
-		return -f;
-	else
-		return f;
+	return ( f < 0.0f ? -f : f );
 }
 
 } // namespace math
diff --git a/src/render/draw.cc b/src/render/draw.cc
index 9e6bb5a..7d0242d 100644
--- a/src/render/draw.cc
+++ b/src/render/draw.cc
@@ -1344,7 +1344,7 @@ void draw(float seconds)
 }
 
 // draw HUD target world space geometry, like dock indicators
-void draw_target(core::Entity *entity)
+void draw_target(const core::Entity *entity)
 {
 	model::Model *model = entity->model();
 	if (!model)
diff --git a/src/render/draw.h b/src/render/draw.h
index b13c7b0..54e8507 100644
--- a/src/render/draw.h
+++ b/src/render/draw.h
@@ -18,7 +18,7 @@ namespace render
 /// draw the world
 void draw(float seconds);
 
-void draw_target(core::Entity *entity);
+void draw_target(const core::Entity *entity);
 
 /// reset
 void reset();
diff --git a/src/render/tgafile.cc b/src/render/tgafile.cc
index db54645..10082e6 100644
--- a/src/render/tgafile.cc
+++ b/src/render/tgafile.cc
@@ -270,20 +270,20 @@ void TGA::save(const char *filename, Image & image)
 				pixel_data[3] = *image[index+3];
 
 			if (block_length == 0) {
+				// if the block is empty, copy the first pixel
 				memcpy(block_data, pixel_data, image.channels());
 				block_length++;
+				// by default, the block is not compressed
 				compress = false;
 			} else {
+				// if the current block is not compressed
 				if (!compress) {
-
-					// uncompressed block and pixel_data differs from the last pixel
+					// if the previous pixel differs from the pixel data
 					if (memcmp(&block_data[(block_length-1)*image.channels()], pixel_data, image.channels()) != 0) {
 						// append pixel
 						memcpy(&block_data[block_length*image.channels()], pixel_data, image.channels());
-
 						block_length++;
 					} else {
-
 						// uncompressed block and pixel data is identical
 						if (block_length > 1) {
 							// write the uncompressed block
@@ -292,17 +292,16 @@ void TGA::save(const char *filename, Image & image)
 							ofs.write((char *)block_data, (block_length - 1) * image.channels());
 							block_length = 1;
 						}
+						// create a commpressed block
 						memcpy(block_data, pixel_data, image.channels());
 						block_length++;
 						compress = true;
 					}
-
+				// if the current block is compressed
 				} else {
-
-					// compressed block and pixel data are identical
+					// if the previous pixel and the pixel data are identical
 					if (memcmp(block_data, pixel_data, image.channels()) == 0) {
 						block_length++;
-
 					} else {
 
 						// compressed block and pixel data differs
diff --git a/src/ui/container.cc b/src/ui/container.cc
index 04e1ec2..31d7549 100644
--- a/src/ui/container.cc
+++ b/src/ui/container.cc
@@ -45,11 +45,7 @@ void Container::resize()
 
 void Container::draw_border()
 {
-	if (focus()) {
-		paint::color(palette()->foreground());
-	} else {
-		paint::color(palette()->border());
-	}
+	paint::color(palette()->foreground());
 	paint::border(global_location(), size());
 }
 
diff --git a/src/ui/widget.cc b/src/ui/widget.cc
index 2e2f291..39fbe98 100644
--- a/src/ui/widget.cc
+++ b/src/ui/widget.cc
@@ -321,7 +321,21 @@ bool Widget::has_input_focus() const
 
 /* -- event distributors ------------------------------------------- */
 
+bool Widget::event_emit(Widget *sender, const Event event, void *data)
+// Unhandled events are sent to the parent widget
+{
+	if (on_emit(sender, event, data)) {
+		return true;
+	} else if (parent()) {
+		return (parent()->on_emit(sender, event, data));
+	} else {
+		return false;
+	}
+}
+
+
 bool Widget::event_key(const bool pressed, const int key, const unsigned int modifier)
+// Unhandled key events are sent to the parent widget
 {
 	bool handled = false;
 
@@ -400,6 +414,11 @@ bool Widget::on_keyrelease(const int key, const unsigned int modifier)
 	return false;
 }
 
+bool Widget::on_emit(Widget *sender, const Event event, void *data)
+{
+	return false;
+}
+
 /* -- draw functions ----------------------------------------------- */
 
 void Widget::draw_debug_border()
diff --git a/src/ui/widget.h b/src/ui/widget.h
index 1f87695..50678fa 100644
--- a/src/ui/widget.h
+++ b/src/ui/widget.h
@@ -27,6 +27,9 @@ class Widget
 {
 
 public:
+	/// types of custom events a widget can emit
+	enum Event {EventNone = 0, EventSelected = 1};
+	
 	/// create a new widget
 	Widget(Widget *parent = 0);
 
@@ -196,22 +199,45 @@ public:
 	/// enable or disable widget border
 	void set_border(bool border = true);
 
-	///enable or disable widget background
+	/// enable or disable widget background
 	void set_background(bool background = true);
+	
+	/// emit a custom event
+	void emit(const Event event, const void *data=0);
 
-	/* -- event distributors ----------------------------------- */
+	/* -- event distributors --------------------------------------- */
 
-	/// distribute resize event
-	virtual void event_resize();
-
-	/// distribute draw event
-	virtual void event_draw();
+	/**
+	 * @brief calls the resize event handler and sends the event to all child widgets
+	 * @see resize
+	 **/
+	void event_resize();
+	
+	/**
+	 * @brief calls the draw event handler and sends the event to all child widgets
+	 * @see draw
+	 **/
+	void event_draw();
 
-	/// distribute keyboard events
-	virtual bool event_key(const bool pressed, const int key, const unsigned int modifier);
+	/**
+	 * @brief calls the key event handlers and sends unhandled keys to the parent widget
+	 * @see on_keypress
+	 * @see on_keyrelease
+	 **/
+	bool event_key(const bool pressed, const int key, const unsigned int modifier);
 
-	/// distribute mouse movement events
-	virtual bool event_mouse(const math::Vector2f &cursor);
+	/**
+	 * @brief calls the mouse event handlers and sends unhandled keys to the parent widget
+	 * @see on_mousemove
+	 * @see on_mouseover
+	 **/
+	bool event_mouse(const math::Vector2f &cursor);
+	
+	/**
+	 * @brief calls the custom event handler and sends unhandled events to the parent widget
+	 * @see on_event
+	 **/
+	bool event_emit(Widget *sender, const Event event, void *data = 0);
 
 protected:
 	/// type definition for child widgets
@@ -289,6 +315,9 @@ protected:
 
 	/// called when the widget receives a key release
 	virtual bool on_keyrelease(const int key, const unsigned int modifier);
+	
+	/// called when the widget receives a custom event
+	virtual bool on_emit(Widget *sender, const Event event, void *data=0);
 
 	/* -- draw functions --------------------------------------- */
 
-- 
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