Fixed creating level-subset again.

[supertux.git] / src / world.cpp

diff --git a/src/world.cpp b/src/world.cpp
index 4564c01..80bfe7b 100644 (file)
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -318,6 +318,12 @@ World::action(double frame_ratio)
 /* This functions takes cares of the scrolling */
 void World::scrolling(double frame_ratio)
 {
+  if(level->hor_autoscroll_speed)
+    {
+    scroll_x += level->hor_autoscroll_speed * frame_ratio;
+    return;
+    }
+
   int tux_pos_x = (int)(tux.base.x + (tux.base.width/2));
 
   if (level->back_scrolling || debug_mode)
@@ -340,7 +346,9 @@ void World::scrolling(double frame_ratio)
           final_scroll_x = tux_pos_x - X_SPACE;
       }
 
-      scroll_x += (final_scroll_x - scroll_x) / (frame_ratio * (CHANGE_DIR_SCROLL_SPEED / 100));
+      scroll_x +=   (final_scroll_x - scroll_x)
+                  / (frame_ratio * (CHANGE_DIR_SCROLL_SPEED / 100))
+                  + (tux.physic.get_velocity_x() * frame_ratio + tux.physic.get_acceleration_x() * frame_ratio * frame_ratio);
       // std::cerr << tux_pos_x << " " << final_scroll_x << " " << scroll_x << std::endl;
 
     }
@@ -361,13 +369,21 @@ void World::scrolling(double frame_ratio)
   }
 
   else /*no debug*/
-    {
+  {
     if (tux.physic.get_velocity_x() > 0 && scroll_x < tux_pos_x - (screen->w - X_SPACE))
       scroll_x = tux_pos_x - (screen->w - X_SPACE);
     else if (tux.physic.get_velocity_x() < 0 && scroll_x > tux_pos_x - X_SPACE && level->back_scrolling)
       scroll_x = tux_pos_x - X_SPACE;
+    else
+    {
+      if (tux.dir == RIGHT && scroll_x < tux_pos_x - (screen->w - X_SPACE))
+          scroll_x = tux_pos_x - (screen->w - X_SPACE);
+      else if (tux.dir == LEFT && scroll_x > tux_pos_x - X_SPACE && level->back_scrolling)
+          scroll_x = tux_pos_x - X_SPACE;
     }
 
+  }
+
   // this code prevent the screen to scroll before the start or after the level's end
   if(scroll_x < 0)
     scroll_x = 0;