From: Matthias Braun <matze@braunis.de>
Date: Wed, 24 Nov 2004 14:10:27 +0000 (+0000)
Subject: furhter improve collision detection by reintroducing time of collision, still more... 
X-Git-Url: https://git.octo.it/?a=commitdiff_plain;h=e4d4375bf4b6802321d956f5f3886320b7275cf0;p=supertux.git

furhter improve collision detection by reintroducing time of collision, still more issues to solve

SVN-Revision: 2168
---

diff --git a/data/levels/test/bonusblock.stl b/data/levels/test/bonusblock.stl
index e26bb65d6..ffa1bb294 100644
--- a/data/levels/test/bonusblock.stl
+++ b/data/levels/test/bonusblock.stl
@@ -6,8 +6,6 @@
   (time   999)
   (sector
     (name  "main")
-    (width  30)
-    (height  30)
     (gravity 10.000000)
     (background (image "arctis.jpg")
                 (speed 0.5))
diff --git a/lib/app/globals.h b/lib/app/globals.h
index f1ba02980..7c76c0de2 100644
--- a/lib/app/globals.h
+++ b/lib/app/globals.h
@@ -26,7 +26,7 @@
 
 #include "SDL.h"
 
-#include "../video/font.h"
+#include "video/font.h"
 #include "tinygettext.h"
 
 namespace SuperTux
diff --git a/lib/app/setup.cpp b/lib/app/setup.cpp
index ba520c096..fb41e0ffd 100644
--- a/lib/app/setup.cpp
+++ b/lib/app/setup.cpp
@@ -43,14 +43,14 @@
 
 #include <cctype>
 
-#include "../app/globals.h"
-#include "../app/setup.h"
-#include "../video/screen.h"
-#include "../video/surface.h"
-#include "../gui/menu.h"
-#include "../utils/configfile.h"
-#include "../audio/sound_manager.h"
-#include "../app/gettext.h"
+#include "globals.h"
+#include "setup.h"
+#include "video/screen.h"
+#include "video/surface.h"
+#include "gui/menu.h"
+#include "utils/configfile.h"
+#include "audio/sound_manager.h"
+#include "gettext.h"
 
 using namespace SuperTux;
 
diff --git a/lib/audio/musicref.cpp b/lib/audio/musicref.cpp
index e7b613e07..a29db19ff 100644
--- a/lib/audio/musicref.cpp
+++ b/lib/audio/musicref.cpp
@@ -20,7 +20,7 @@
 
 #include <config.h>
 
-#include "../audio/musicref.h"
+#include "audio/musicref.h"
 
 using namespace SuperTux;
 
diff --git a/lib/audio/musicref.h b/lib/audio/musicref.h
index d433787d4..f50538b0f 100644
--- a/lib/audio/musicref.h
+++ b/lib/audio/musicref.h
@@ -20,7 +20,7 @@
 #ifndef SUPERTUX_MUSICREF_H
 #define SUPERTUX_MUSICREF_H
 
-#include "../audio/sound_manager.h"
+#include "sound_manager.h"
 
 namespace SuperTux
   {
diff --git a/lib/audio/sound_manager.cpp b/lib/audio/sound_manager.cpp
index f721f3fd9..283fbba2c 100644
--- a/lib/audio/sound_manager.cpp
+++ b/lib/audio/sound_manager.cpp
@@ -22,11 +22,11 @@
 #include <cmath>
 #include <cassert>
 
-#include "../audio/sound_manager.h"
-#include "../audio/musicref.h"
-#include "../app/globals.h"
-#include "../app/setup.h"
-#include "../special/moving_object.h"
+#include "audio/sound_manager.h"
+#include "audio/musicref.h"
+#include "app/globals.h"
+#include "app/setup.h"
+#include "special/moving_object.h"
 
 using namespace SuperTux;
 
diff --git a/lib/audio/sound_manager.h b/lib/audio/sound_manager.h
index b9878e400..9eece9c83 100644
--- a/lib/audio/sound_manager.h
+++ b/lib/audio/sound_manager.h
@@ -25,7 +25,7 @@
 #include <map>
 
 #include "SDL_mixer.h"
-#include "../math/vector.h"
+#include "math/vector.h"
 
 namespace SuperTux
   {
diff --git a/lib/gui/button.cpp b/lib/gui/button.cpp
index a2d84150a..b597368fe 100644
--- a/lib/gui/button.cpp
+++ b/lib/gui/button.cpp
@@ -20,10 +20,10 @@
 #include "SDL.h"
 #include <iostream>
 
-#include "../gui/button.h"
-#include "../gui/mousecursor.h"
-#include "../app/globals.h"
-#include "../video/font.h"
+#include "button.h"
+#include "mousecursor.h"
+#include "app/globals.h"
+#include "video/font.h"
 
 using namespace SuperTux;
 
diff --git a/lib/gui/button.h b/lib/gui/button.h
index 518edb3c2..5a78d4592 100644
--- a/lib/gui/button.h
+++ b/lib/gui/button.h
@@ -21,8 +21,8 @@
 #include <vector>
 #include <string>
 
-#include "../math/vector.h"
-#include "../video/drawing_context.h"
+#include "math/vector.h"
+#include "video/drawing_context.h"
 
 namespace SuperTux
   {
diff --git a/lib/gui/menu.cpp b/lib/gui/menu.cpp
index 3e65955c6..ba7b749a6 100644
--- a/lib/gui/menu.cpp
+++ b/lib/gui/menu.cpp
@@ -31,13 +31,13 @@
 #include <string>
 #include <cassert>
 
-#include "../app/globals.h"
-#include "../gui/menu.h"
-#include "../video/screen.h"
-#include "../video/drawing_context.h"
-#include "../app/setup.h"
-#include "../app/gettext.h"
-#include "../math/vector.h"
+#include "app/globals.h"
+#include "menu.h"
+#include "video/screen.h"
+#include "video/drawing_context.h"
+#include "app/setup.h"
+#include "app/gettext.h"
+#include "math/vector.h"
 
 using namespace SuperTux;
 
diff --git a/lib/gui/menu.h b/lib/gui/menu.h
index f6d52aa61..c9ef6ee7b 100644
--- a/lib/gui/menu.h
+++ b/lib/gui/menu.h
@@ -27,10 +27,10 @@
 
 #include "SDL.h"
 
-#include "../video/surface.h"
-#include "../video/font.h"
-#include "../special/timer.h"
-#include "../gui/mousecursor.h"
+#include "video/surface.h"
+#include "video/font.h"
+#include "special/timer.h"
+#include "mousecursor.h"
 
 namespace SuperTux
   {
diff --git a/lib/gui/mousecursor.cpp b/lib/gui/mousecursor.cpp
index e1e936be6..26df18db2 100644
--- a/lib/gui/mousecursor.cpp
+++ b/lib/gui/mousecursor.cpp
@@ -19,8 +19,8 @@
 
 #include <config.h>
 
-#include "../video/drawing_context.h"
-#include "../gui/mousecursor.h"
+#include "video/drawing_context.h"
+#include "gui/mousecursor.h"
 
 using namespace SuperTux;
 
diff --git a/lib/gui/mousecursor.h b/lib/gui/mousecursor.h
index c6b19f39b..0842b62c8 100644
--- a/lib/gui/mousecursor.h
+++ b/lib/gui/mousecursor.h
@@ -22,8 +22,8 @@
 
 #include <string>
 
-#include "../special/timer.h"
-#include "../video/surface.h"
+#include "special/timer.h"
+#include "video/surface.h"
 
 namespace SuperTux
   {
diff --git a/lib/math/physic.cpp b/lib/math/physic.cpp
index 7156aabd5..7cc570b97 100644
--- a/lib/math/physic.cpp
+++ b/lib/math/physic.cpp
@@ -22,8 +22,8 @@
 
 #include <cstdio>
 
-#include "../math/physic.h"
-#include "../special/timer.h"
+#include "math/physic.h"
+#include "special/timer.h"
 
 using namespace SuperTux;
 
diff --git a/lib/math/vector.cpp b/lib/math/vector.cpp
index c156402fd..66a8352ab 100644
--- a/lib/math/vector.cpp
+++ b/lib/math/vector.cpp
@@ -21,7 +21,7 @@
 
 #include <cmath>
 
-#include "../math/vector.h"
+#include "math/vector.h"
 
 using namespace SuperTux;
 
diff --git a/lib/special/collision.cpp b/lib/special/collision.cpp
index b0cb2295d..1589a6e47 100644
--- a/lib/special/collision.cpp
+++ b/lib/special/collision.cpp
@@ -26,37 +26,38 @@ Collision::rectangle_rectangle(CollisionHit& hit, const Rectangle& r1,
   if(r1.p2.y < r2.p1.y || r1.p1.y > r2.p2.y)
     return false;
 
-  float xr;
   if(movement.x > DELTA) {
     hit.depth = r1.p2.x - r2.p1.x;
+    hit.time = hit.depth / movement.x;
     hit.normal.x = -1;
     hit.normal.y = 0;
-    xr = hit.depth / movement.x;
   } else if(movement.x < -DELTA) {
     hit.depth = r2.p2.x - r1.p1.x;
+    hit.time = hit.depth / -movement.x;
     hit.normal.x = 1;
     hit.normal.y = 0;
-    xr = hit.depth / -movement.x;
   } else {
-    xr = FLT_MAX;
     if(movement.y > -DELTA && movement.y < DELTA) {
       return false;
     }
+    hit.time = FLT_MAX;
   }
 
   if(movement.y > DELTA) {
     float ydepth = r1.p2.y - r2.p1.y;
-    float yr = ydepth / movement.y;
-    if(yr < xr) {
+    float yt = ydepth / movement.y;
+    if(yt < hit.time) {
       hit.depth = ydepth;
+      hit.time = yt;
       hit.normal.x = 0;
       hit.normal.y = -1;
     }
   } else if(movement.y < -DELTA) {
     float ydepth = r2.p2.y - r1.p1.y;
-    float yr = ydepth / -movement.y;
-    if(yr < xr) {
+    float yt = ydepth / -movement.y;
+    if(yt < hit.time) {
       hit.depth = ydepth;
+      hit.time = yt;
       hit.normal.x = 0;
       hit.normal.y = 1;
     }
diff --git a/lib/special/collision_hit.h b/lib/special/collision_hit.h
index 068965906..07974f629 100644
--- a/lib/special/collision_hit.h
+++ b/lib/special/collision_hit.h
@@ -44,7 +44,9 @@ class CollisionHit
 public:
   /// penetration depth
   float depth;
-  // The normal of the side we collided with
+  /// time of the collision (between 0 and 1 in relation to movement)
+  float time;
+  /// The normal of the side we collided with
   Vector normal;
 };
 
diff --git a/lib/special/frame_rate.cpp b/lib/special/frame_rate.cpp
index 5c8c2b859..cff40710d 100644
--- a/lib/special/frame_rate.cpp
+++ b/lib/special/frame_rate.cpp
@@ -20,8 +20,8 @@
 
 #include "SDL.h"
 
-#include "../special/frame_rate.h"
-#include "../special/timer.h"
+#include "frame_rate.h"
+#include "timer.h"
 
 using namespace SuperTux;
 
diff --git a/lib/special/game_object.cpp b/lib/special/game_object.cpp
index b525bac06..c3fd98dcd 100644
--- a/lib/special/game_object.cpp
+++ b/lib/special/game_object.cpp
@@ -19,7 +19,7 @@
 
 #include <config.h>
 
-#include "../special/game_object.h"
+#include "special/game_object.h"
 
 namespace SuperTux
 {
diff --git a/lib/special/moving_object.cpp b/lib/special/moving_object.cpp
index 46edc5aeb..8f543a91f 100644
--- a/lib/special/moving_object.cpp
+++ b/lib/special/moving_object.cpp
@@ -19,7 +19,7 @@
 
 #include <config.h>
 
-#include "../special/moving_object.h"
+#include "moving_object.h"
 
 using namespace SuperTux;
 
diff --git a/lib/special/sprite.cpp b/lib/special/sprite.cpp
index 080cc3e9e..c73dc3835 100644
--- a/lib/special/sprite.cpp
+++ b/lib/special/sprite.cpp
@@ -23,10 +23,10 @@
 #include <cassert>
 #include <stdexcept>
 
-#include "../app/globals.h"
-#include "../app/setup.h"
-#include "../special/sprite.h"
-#include "../video/drawing_context.h"
+#include "app/globals.h"
+#include "app/setup.h"
+#include "sprite.h"
+#include "video/drawing_context.h"
 
 namespace SuperTux
 {
diff --git a/lib/special/sprite.h b/lib/special/sprite.h
index 2e18eb65b..655aba800 100644
--- a/lib/special/sprite.h
+++ b/lib/special/sprite.h
@@ -24,9 +24,9 @@
 #include <vector>
 #include <map>
 
-#include "../utils/lispreader.h"
-#include "../video/surface.h"
-#include "../math/vector.h"
+#include "utils/lispreader.h"
+#include "video/surface.h"
+#include "math/vector.h"
 #include "sprite_data.h"
 
 namespace SuperTux
diff --git a/lib/special/sprite_data.cpp b/lib/special/sprite_data.cpp
index 6289076fe..197b7c52b 100644
--- a/lib/special/sprite_data.cpp
+++ b/lib/special/sprite_data.cpp
@@ -23,10 +23,10 @@
 #include <sstream>
 #include <stdexcept>
 
-#include "../app/globals.h"
-#include "../app/setup.h"
-#include "../special/sprite.h"
-#include "../video/drawing_context.h"
+#include "sprite_data.h"
+#include "app/globals.h"
+#include "app/setup.h"
+#include "video/drawing_context.h"
 
 namespace SuperTux
 {
diff --git a/lib/special/sprite_data.h b/lib/special/sprite_data.h
index a33cba74a..55d747311 100644
--- a/lib/special/sprite_data.h
+++ b/lib/special/sprite_data.h
@@ -24,8 +24,8 @@
 #include <vector>
 #include <map>
 
-#include "../utils/lispreader.h"
-#include "../video/surface.h"
+#include "utils/lispreader.h"
+#include "video/surface.h"
 
 namespace SuperTux
 {
diff --git a/lib/special/sprite_manager.h b/lib/special/sprite_manager.h
index bc2e1e6f6..2925e68df 100644
--- a/lib/special/sprite_manager.h
+++ b/lib/special/sprite_manager.h
@@ -22,7 +22,7 @@
 
 #include <map>
 
-#include "../special/sprite.h"
+#include "sprite.h"
 
 namespace SuperTux
 {
diff --git a/lib/special/timer.cpp b/lib/special/timer.cpp
index 5aa62bada..1ff134981 100644
--- a/lib/special/timer.cpp
+++ b/lib/special/timer.cpp
@@ -21,7 +21,7 @@
 #include <config.h>
 
 #include "SDL.h"
-#include "../special/timer.h"
+#include "timer.h"
 
 using namespace SuperTux;
 
diff --git a/lib/utils/configfile.cpp b/lib/utils/configfile.cpp
index 452f4cdbb..aa8cb401c 100644
--- a/lib/utils/configfile.cpp
+++ b/lib/utils/configfile.cpp
@@ -22,10 +22,10 @@
 #include <cstdlib>
 #include <string>
 
-#include "../utils/configfile.h"
-#include "../app/setup.h"
-#include "../app/globals.h"
-#include "../audio/sound_manager.h"
+#include "configfile.h"
+#include "app/setup.h"
+#include "app/globals.h"
+#include "audio/sound_manager.h"
 
 using namespace SuperTux;
 
diff --git a/lib/utils/configfile.h b/lib/utils/configfile.h
index 17d1af2a1..6620bcb7b 100644
--- a/lib/utils/configfile.h
+++ b/lib/utils/configfile.h
@@ -20,7 +20,7 @@
 #ifndef SUPERTUX_CONFIGFILE_H
 #define SUPERTUX_CONFIGFILE_H
 
-#include "../utils/lispreader.h"
+#include "lispreader.h"
 
 namespace SuperTux {
 
diff --git a/lib/utils/lispreader.cpp b/lib/utils/lispreader.cpp
index f435527f4..6076b16fe 100644
--- a/lib/utils/lispreader.cpp
+++ b/lib/utils/lispreader.cpp
@@ -31,9 +31,9 @@
 #include <cstring>
 #include <cassert>
 
-#include "../app/globals.h"
-#include "../app/setup.h"
-#include "../utils/lispreader.h"
+#include "app/globals.h"
+#include "app/setup.h"
+#include "lispreader.h"
 
 using namespace SuperTux;
 
diff --git a/lib/utils/lispreader.h b/lib/utils/lispreader.h
index 704ff7829..ad8ed16f2 100644
--- a/lib/utils/lispreader.h
+++ b/lib/utils/lispreader.h
@@ -31,7 +31,7 @@
 
 #include <zlib.h>
 
-#include "../utils/exceptions.h"
+#include "utils/exceptions.h"
 
 namespace SuperTux {
 
diff --git a/lib/utils/lispwriter.cpp b/lib/utils/lispwriter.cpp
index 72e201de1..383927cb7 100644
--- a/lib/utils/lispwriter.cpp
+++ b/lib/utils/lispwriter.cpp
@@ -21,7 +21,7 @@
 
 #include <iostream>
 
-#include "../utils/lispwriter.h"
+#include "lispwriter.h"
 
 using namespace SuperTux;
 
diff --git a/lib/video/drawing_context.cpp b/lib/video/drawing_context.cpp
index 1b35337f0..bba6d36c2 100644
--- a/lib/video/drawing_context.cpp
+++ b/lib/video/drawing_context.cpp
@@ -22,10 +22,10 @@
 #include <cassert>
 #include <iostream>
 
-#include "../video/drawing_context.h"
-#include "../video/surface.h"
-#include "../app/globals.h"
-#include "../video/font.h"
+#include "drawing_context.h"
+#include "surface.h"
+#include "app/globals.h"
+#include "font.h"
 
 using namespace SuperTux;
 
diff --git a/lib/video/drawing_context.h b/lib/video/drawing_context.h
index 03dce32e6..7ef8de954 100644
--- a/lib/video/drawing_context.h
+++ b/lib/video/drawing_context.h
@@ -24,9 +24,9 @@
 
 #include "SDL.h"
 
-#include "../math/vector.h"
-#include "../video/screen.h"
-#include "../video/surface.h"
+#include "math/vector.h"
+#include "video/screen.h"
+#include "video/surface.h"
 
 namespace SuperTux
   {
diff --git a/lib/video/font.cpp b/lib/video/font.cpp
index 93e792568..78cfd39ab 100644
--- a/lib/video/font.cpp
+++ b/lib/video/font.cpp
@@ -23,11 +23,11 @@
 #include <cstdlib>
 #include <cstring>
 
-#include "../app/globals.h"
-#include "../video/screen.h"
-#include "../video/font.h"
-#include "../video/drawing_context.h"
-#include "../utils/lispreader.h"
+#include "app/globals.h"
+#include "screen.h"
+#include "font.h"
+#include "drawing_context.h"
+#include "utils/lispreader.h"
 
 using namespace SuperTux;
 
diff --git a/lib/video/font.h b/lib/video/font.h
index 2a5067aff..429cf97e1 100644
--- a/lib/video/font.h
+++ b/lib/video/font.h
@@ -23,8 +23,8 @@
 
 #include <string>
 
-#include "../video/surface.h"
-#include "../math/vector.h"
+#include "video/surface.h"
+#include "math/vector.h"
 
 namespace SuperTux
   {
diff --git a/lib/video/screen.cpp b/lib/video/screen.cpp
index 2b6d23170..4cef05703 100644
--- a/lib/video/screen.cpp
+++ b/lib/video/screen.cpp
@@ -35,10 +35,10 @@
 #include <ctype.h>
 #endif
 
-#include "../video/screen.h"
-#include "../app/globals.h"
-#include "../video/drawing_context.h"
-#include "../math/vector.h"
+#include "screen.h"
+#include "app/globals.h"
+#include "video/drawing_context.h"
+#include "math/vector.h"
 
 using namespace SuperTux;
 
diff --git a/lib/video/surface.cpp b/lib/video/surface.cpp
index 5f51c871a..fafdec82b 100644
--- a/lib/video/surface.cpp
+++ b/lib/video/surface.cpp
@@ -27,10 +27,10 @@
 #include "SDL.h"
 #include "SDL_image.h"
 
-#include "../video/surface.h"
-#include "../video/screen.h"
-#include "../app/globals.h"
-#include "../app/setup.h"
+#include "video/surface.h"
+#include "video/screen.h"
+#include "app/globals.h"
+#include "app/setup.h"
 
 using namespace SuperTux;
 
diff --git a/lib/video/surface.h b/lib/video/surface.h
index 1491e84fa..d13d9dc58 100644
--- a/lib/video/surface.h
+++ b/lib/video/surface.h
@@ -29,8 +29,8 @@
 
 #include "SDL.h"
 
-#include "../math/vector.h"
-#include "../video/screen.h"
+#include "math/vector.h"
+#include "video/screen.h"
 
 namespace SuperTux
   {
diff --git a/mk/jam/flags.jam b/mk/jam/flags.jam
index 1b8ea6160..be214357c 100644
--- a/mk/jam/flags.jam
+++ b/mk/jam/flags.jam
@@ -124,7 +124,7 @@ rule ExtraObjects
 ##    sure the dependency scanner is able to locate your header files. The
 ##    directories are relative to the current subdir specified with the SubDir
 ##    rule.
-##    Implementation: The directories are simply added to the HDRS variable
+##    Implementation: The directories are simply added to the HDRSEARCH variable
 ##    which is respected by all jam rules.
 rule IncludeDir
 {
@@ -136,14 +136,14 @@ rule IncludeDir
             CppFlags $(<) : [ CreateIncludeFlags $(dir) ] ;
 
             # needed for header scanning
-            HDRS on $($(<)_SOURCES) += $(dir) ;
+            HDRSEARCH on $($(<)_SOURCES) += $(dir) ;
         }
     } else {
         for i in $(<) {
             dir = [ ConcatDirs $(SUBDIR) $(i) ] ;
             CPPFLAGS += [ CreateIncludeFlags $(dir) ] ;
             # needed for header scanning
-            HDRS += $(dir) ;
+            HDRSEARCH += $(dir) ;
         }
     }
 }
diff --git a/mk/jam/jamcompatibility.jam b/mk/jam/jamcompatibility.jam
index 9cd0ce1a4..a0c09368f 100644
--- a/mk/jam/jamcompatibility.jam
+++ b/mk/jam/jamcompatibility.jam
@@ -220,7 +220,6 @@ rule SubDir
 	# directory should not hold object files, LOCATE_TARGET can
 	# subsequently be redefined.
 
-#echo SS: $(SUBDIR) ;
 	SEARCH_SOURCE = $(SUBDIR) ;
 	LOCATE_SOURCE = $(ALL_LOCATE_TARGET) $(SUBDIR) ;
 	LOCATE_TARGET = $(ALL_LOCATE_TARGET) $(SUBDIR) ;
diff --git a/mk/jam/objects.jam b/mk/jam/objects.jam
index aeec2506e..c9c024545 100644
--- a/mk/jam/objects.jam
+++ b/mk/jam/objects.jam
@@ -75,18 +75,15 @@ rule CompileObject
     # the regexp pattern $(HDRSCAN) and then invokes $(HDRRULE)
     # with the scanned file as the target and the found headers
     # as the sources.  HDRSEARCH is the value of SEARCH used for
-    # the found header files.  Finally, if jam must deal with 
-    # header files of the same name in different directories,
-    # they can be distinguished with HDRGRIST.
+    # the found header files.
 
     # $(SEARCH_SOURCE:E) is where cc first looks for #include 
     # "foo.h" files.  If the source file is in a distant directory, 
     # look there.  Else, look in "" (the current directory).
     if $(HDRRULE_$(<:S))
     {
-        HDRS on $(<) = [ ConcatDirs $(SUBDIR) $(<:D) ]
-            $(SEARCH_SOURCE:E) $(HDRS) $(STDHDRS) ;
-        HDRGRIST on $(<) = $(HDRGRIST) ;                               
+        HDRSEARCH on $(<) = $(SEARCH_SOURCE:E) $(HDRSEARCH) $(STDHDRSEARCH) ;
+        SEARCH_SOURCE on $(<) = $(SEARCH_SOURCE) ;
         HDRRULE on $(<) = $(HDRRULE_$(<:S)) ;
         HDRSCAN on $(<) = $(HDRPATTERN_$(<:S)) ;
     }
@@ -125,19 +122,26 @@ rule HeaderRule
     # set SEARCH so Jam can find the headers, but then say we don't
     # care if we can't actually find the headers (they may have been
     # within ifdefs),
-    local s = $(>:G=$(HDRGRIST:E)) ;
+    local HDRSEARCH = [ on $(<) GetVar HDRSEARCH ] ;
+    local SEARCH_SOURCE = [ on $(<) GetVar SEARCH_SOURCE ] ;
+
+    Includes $(<) : $(>) ;
+    SEARCH on $(>) = $(HDRSEARCH) $(SEARCH_SOURCE)/$(<:D) ;
+    NoCare $(>) ;
 
-    Includes $(<) : $(s) ;
-    SEARCH on $(s) = $(HDRS) ;
-    NoCare $(s) ;
- 
     local i ;
-    for i in $(s)
+    for i in $(>)
     {
-        HDRGRIST on $(s) = $(HDRGRIST) ;
-        HDRS on $(s) = $(HDRS) ;
-        HDRRULE on $(s) = [ on $(<) GetVar HDRRULE ] ;
-        HDRSCAN on $(s) = [ on $(<) GetVar HDRPATTERN ] ;
+
+        SEARCH on $(>) = $(HDRSEARCH) $(SEARCH_SOURCE)/$(<:D) ;
+        if $(i:D) = "" {
+            SEARCH_SOURCE on $(i) = $(SEARCH_SOURCE)/$(<:D) ;
+        } else {
+            SEARCH_SOURCE on $(i) = $(SEARCH_SOURCE) ;
+        }
+        HDRSEARCH on $(>) = $(HDRSEARCH) ;
+        HDRRULE on $(>) = [ on $(<) GetVar HDRRULE ] ;
+        HDRSCAN on $(>) = [ on $(<) GetVar HDRPATTERN ] ;
     }
 }
 
@@ -148,10 +152,10 @@ if $(JAMVERSION) < 2.5
 
 rule HeaderRule
 {
-    local s = $(>:G=$(HDRGRIST:E)) ;
+    local s = $(>:G=$(HDRGRIST)) ;
 
     Includes $(<) : $(s) ;
-    SEARCH on $(s) = $(HDRS) ;
+    SEARCH on $(s) = $(HDRSEARCH) ;
     NoCare $(s) ;
  
     local i ;
@@ -160,7 +164,7 @@ rule HeaderRule
         if $(HDRRULE_$(i:S))
         {
             HDRGRIST on $(s) = $(HDRGRIST) ;
-            HDRS on $(s) = $(HDRS) ;
+            HDRSEARCH on $(s) = $(HDRSEARCH) ;
             HDRRULE on $(s) = $(HDRRULE_$(i:S)) ;
             HDRSCAN on $(s) = $(HDRPATTERN_$(i:S)) ;
         }
diff --git a/mk/jam/variant.jam b/mk/jam/variant.jam
index 2697579f5..e2c483de9 100644
--- a/mk/jam/variant.jam
+++ b/mk/jam/variant.jam
@@ -22,7 +22,7 @@ case profile :
 CCFLAGS += $(COMPILER_CFLAGS) $(COMPILER_CFLAGS_$(VARIANT)) ;
 C++FLAGS += $(COMPILER_CFLAGS) $(COMPILER_C++FLAGS)
 	    $(COMPILER_CFLAGS_$(VARIANT)) $(COMPILER_C++FLAGS_$(VARIANT)) ;
-LINKLIBS += $(LDFLAGS) $(COMPILER_LFLAGS) $(COMPILER_LFLAGS_$(VARIANT)) ;
+LFLAGS += $(LDFLAGS) $(COMPILER_LFLAGS) $(COMPILER_LFLAGS_$(VARIANT)) ;
 LOCATE_OBJECTS = $(LOCATE_OBJECTS)/$(SHORTVARIANT) ;
 
 ##  SubVariant variantname
diff --git a/src/gameloop.cpp b/src/gameloop.cpp
index 15895653e..89776b069 100644
--- a/src/gameloop.cpp
+++ b/src/gameloop.cpp
@@ -723,6 +723,7 @@ GameSession::run()
     float elapsed_time = float(ticks - lastticks) / 1000.;
     global_time += elapsed_time;
     lastticks = ticks;
+
     // 40fps is minimum
     if(elapsed_time > .025)
       elapsed_time = .025;
diff --git a/src/object/block.cpp b/src/object/block.cpp
index cc9c40001..c75c990fa 100644
--- a/src/object/block.cpp
+++ b/src/object/block.cpp
@@ -40,8 +40,7 @@ Block::collision(GameObject& other, const CollisionHit& hitdata)
   Player* player = dynamic_cast<Player*> (&other);
   if(player) {
     // collided from below?
-    if(hitdata.normal.x == 0 && hitdata.normal.y < 0
-        && player->get_movement().y < 0) {
+    if(hitdata.normal.x == 0 && hitdata.normal.y < 0) {
       hit(*player);
     }
   }
@@ -132,7 +131,7 @@ BonusBlock::hit(Player& player)
       break;
 
     case 3: // star
-      sector->add_object(new Star(get_pos()));
+      sector->add_object(new Star(get_pos() + Vector(0, -32)));
       break;
 
     case 4: // 1up
diff --git a/src/object/growup.cpp b/src/object/growup.cpp
index a7f748214..deaaff168 100644
--- a/src/object/growup.cpp
+++ b/src/object/growup.cpp
@@ -35,7 +35,7 @@ HitResponse
 GrowUp::collision(GameObject& other, const CollisionHit& hit)
 {
   if(other.get_flags() & FLAG_SOLID) {
-    if(fabsf(hit.normal.y) > .5) { // roof
+    if(fabsf(hit.normal.y) > .5) { // roof or ground
       physic.set_velocity_y(0);
     } else { // bumped left or right
       physic.set_velocity_x(-physic.get_velocity_x());
diff --git a/src/player.cpp b/src/player.cpp
index 6ad42c298..e50bdab2f 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -885,9 +885,9 @@ Player::collision(GameObject& other, const CollisionHit& hit)
       physic.set_velocity_y(.1);
     }
     
-    if(hit.normal.x != 0) { // hit on the side?
-      if(hit.normal.y > 0.6) // limits the slopes we can move up...
-        physic.set_velocity_x(0);
+    if(fabsf(hit.normal.x) > .5) { // hit on the side?
+      printf("s"); fflush(stdout);
+      physic.set_velocity_x(0);
     }
 
     return CONTINUE;
diff --git a/src/sector.cpp b/src/sector.cpp
index 0dd15884b..52f154b85 100644
--- a/src/sector.cpp
+++ b/src/sector.cpp
@@ -635,7 +635,7 @@ Sector::collision_tilemap(MovingObject* object, int depth)
   CollisionHit temphit, hit;
   Rectangle dest = object->get_bbox();
   dest.move(object->movement);
-  hit.depth = -1;
+  hit.time = -1; // represents an invalid value
   for(int x = starttilex; x*32 < max_x; ++x) {
     for(int y = starttiley; y*32 < max_y; ++y) {
       const Tile* tile = solids->get_tile(x, y);
@@ -670,14 +670,14 @@ Sector::collision_tilemap(MovingObject* object, int depth)
 
         if(Collision::rectangle_aatriangle(temphit, dest, object->movement,
               triangle)) {
-          if(temphit.depth > hit.depth)
+          if(temphit.time > hit.time)
             hit = temphit;
         }
       } else { // normal rectangular tile
         Rectangle rect(x*32, y*32, (x+1)*32, (y+1)*32);
         if(Collision::rectangle_rectangle(temphit, dest,
               object->movement, rect)) {
-          if(temphit.depth > hit.depth)
+          if(temphit.time > hit.time)
             hit = temphit;
         }
       }
@@ -685,7 +685,7 @@ Sector::collision_tilemap(MovingObject* object, int depth)
   }
 
   // did we collide at all?
-  if(hit.depth < 0)
+  if(hit.time < 0)
     return;
  
   // call collision function
@@ -698,7 +698,7 @@ Sector::collision_tilemap(MovingObject* object, int depth)
       return;
   }
   // move out of collision and try again
-  object->movement += hit.normal * (hit.depth + .001);
+  object->movement += hit.normal * (hit.depth + .05);
   collision_tilemap(object, depth+1);
 }
 
@@ -714,7 +714,6 @@ Sector::collision_object(MovingObject* object1, MovingObject* object2)
   Vector movement = object1->get_movement() - object2->get_movement();
   if(Collision::rectangle_rectangle(hit, dest1, movement, dest2)) {
     HitResponse response1 = object1->collision(*object2, hit);
-    Vector hitnormal1 = hit.normal;
     hit.normal *= -1;
     HitResponse response2 = object2->collision(*object1, hit);
 
@@ -722,15 +721,15 @@ Sector::collision_object(MovingObject* object1, MovingObject* object2)
       if(response1 == ABORT_MOVE)
         object1->movement = Vector(0, 0);
       if(response2 == CONTINUE)
-        object2->movement += hit.normal * (hit.depth + .1);
+        object2->movement += hit.normal * (hit.depth + .05);
     } else if(response2 != CONTINUE) {
       if(response2 == ABORT_MOVE)
         object2->movement = Vector(0, 0);
       if(response1 == CONTINUE)
-        object1->movement += hitnormal1 * (hit.depth + .1);
+        object1->movement += -hit.normal * (hit.depth + .05);
     } else {
-      object1->movement += hitnormal1 * (hit.depth/2 + 1);
-      object2->movement += hit.normal * (hit.depth/2 + 1);
+      object1->movement += -hit.normal * (hit.depth/2 + .05);
+      object2->movement += hit.normal * (hit.depth/2 + .05);
     }
   }
 }