Merged floating image patch by DirtY iCE

[supertux.git] / src / object / floating_image.cpp

diff --git a/src/object/floating_image.cpp b/src/object/floating_image.cpp
index 1933b9b..00782af 100644 (file)
--- a/src/object/floating_image.cpp
+++ b/src/object/floating_image.cpp
@@ -1,3 +1,22 @@
+//  $Id$
+//
+//  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 2
+//  of the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
 #include <config.h>
 
 #include <stdexcept>
@@ -10,33 +29,79 @@
 #include "lisp/lisp.hpp"
 #include "floating_image.hpp"
 
-FloatingImage::FloatingImage(const std::string& spritefile) 
-  : sprite(NULL), layer(LAYER_FOREGROUND1 + 1), visible(false),
-    anchor(ANCHOR_MIDDLE)
+
+FloatingImage::FloatingImage(const std::string& spritefile)
+  : layer(LAYER_FOREGROUND1 + 1), visible(false), anchor(ANCHOR_MIDDLE), fading(0), fadetime(0)
 {
-  sprite = sprite_manager->create(spritefile);
+  sprite.reset(sprite_manager->create(spritefile));
 }
 
 FloatingImage::~FloatingImage()
 {
-  delete sprite;
 }
 
 void
 FloatingImage::update(float elapsed_time)
 {
-  (void) elapsed_time;
+  if(fading > 0) {
+    fading -= elapsed_time;
+    if(fading <= 0) {
+      fading = 0;
+      visible = true;
+    }
+  } else if(fading < 0) {
+    fading += elapsed_time;
+    if(fading >= 0) {
+      fading = 0;
+      visible = false;
+    }
+  }
+
+//  (void) elapsed_time;
 }
 
 void
-FloatingImage::draw(DrawingContext& context)
+FloatingImage::set_action(const std::string& action)
 {
-  if(!visible)
-    return;
+  sprite->set_action(action);
+}
 
+std::string
+FloatingImage::get_action()
+{
+  return sprite->get_action();
+}
+
+void
+FloatingImage::fade_in(float fadetime)
+{
+  this->fadetime = fadetime;
+  fading = fadetime;
+}
+
+void
+FloatingImage::fade_out(float fadetime)
+{
+  this->fadetime = fadetime;
+  fading = -fadetime;
+}
+
+
+void
+FloatingImage::draw(DrawingContext& context)
+{
   context.push_transform();
   context.set_translation(Vector(0, 0));
 
+  if(fading > 0) {
+    context.set_alpha((fadetime-fading) / fadetime);
+  } else if(fading < 0) {
+    context.set_alpha(-fading / fadetime);
+  } else if(!visible) {
+    context.pop_transform();
+    return;
+  }
+
   Vector spos = pos + get_anchor_pos(Rect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT),
       sprite->get_width(), sprite->get_height(), anchor);