X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Fobject%2Ffloating_image.cpp;h=00782af1ffd85a1b9e6ba0215952521035aa716e;hb=128e58285d549dd6214a9340590387c6b353589b;hp=579878471cfa412f6c65eaa010ff91d91aaf1ab4;hpb=9b9b5637d4aad4c91749d09e8884c43e29c15b9e;p=supertux.git

diff --git a/src/object/floating_image.cpp b/src/object/floating_image.cpp
index 579878471..00782af1f 100644
--- a/src/object/floating_image.cpp
+++ b/src/object/floating_image.cpp
@@ -29,8 +29,9 @@
 #include "lisp/lisp.hpp"
 #include "floating_image.hpp"
 
+
 FloatingImage::FloatingImage(const std::string& spritefile)
-  : layer(LAYER_FOREGROUND1 + 1), visible(false), anchor(ANCHOR_MIDDLE)
+  : layer(LAYER_FOREGROUND1 + 1), visible(false), anchor(ANCHOR_MIDDLE), fading(0), fadetime(0)
 {
   sprite.reset(sprite_manager->create(spritefile));
 }
@@ -42,7 +43,21 @@ FloatingImage::~FloatingImage()
 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
@@ -58,14 +73,35 @@ FloatingImage::get_action()
 }
 
 void
-FloatingImage::draw(DrawingContext& context)
+FloatingImage::fade_in(float fadetime)
 {
-  if(!visible)
-    return;
+  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);