From: Wolfgang Becker <uafr@gmx.de>
Date: Fri, 11 Aug 2006 21:50:58 +0000 (+0000)
Subject: Magic Blocks. (DrawingContext::get_light is not working yet.)
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=ab9eab4c870195c2b60ce76b77044c35b31e8806;p=supertux.git

Magic Blocks. (DrawingContext::get_light is not working yet.)

SVN-Revision: 4163
---

diff --git a/data/images/objects/magicblock/magicblock-solid.png b/data/images/objects/magicblock/magicblock-solid.png
new file mode 100644
index 000000000..d0e147005
Binary files /dev/null and b/data/images/objects/magicblock/magicblock-solid.png differ
diff --git a/data/images/objects/magicblock/magicblock.png b/data/images/objects/magicblock/magicblock.png
new file mode 100644
index 000000000..f9c7774bf
Binary files /dev/null and b/data/images/objects/magicblock/magicblock.png differ
diff --git a/data/images/objects/magicblock/magicblock.sprite b/data/images/objects/magicblock/magicblock.sprite
new file mode 100644
index 000000000..1b8071955
--- /dev/null
+++ b/data/images/objects/magicblock/magicblock.sprite
@@ -0,0 +1,8 @@
+(supertux-sprite
+      (action
+        (name "normal")
+        (images "magicblock.png"))
+      (action
+        (name "solid")
+        (images "magicblock-solid.png"))
+)
diff --git a/data/levels/test/magicblocks.stl b/data/levels/test/magicblocks.stl
new file mode 100644
index 000000000..cd3eeb27a
--- /dev/null
+++ b/data/levels/test/magicblocks.stl
@@ -0,0 +1,104 @@
+(supertux-level
+  (version 2)
+  (name (_ "Unnamed"))
+  (author "wolfgang")
+  (sector
+    (name "main")
+    (ambient-light 0.1451591 0.1451591 0.1451591)
+    (camera
+      (mode "normal")
+    )
+    (spawnpoint
+      (name "main")
+      (x 96)
+      (y 96)
+    )
+    (spotlight
+      (angle 90)
+      (color 1 0 1)
+      (x 256)
+      (y 160)
+    )
+    (spotlight
+      (angle 0)
+      (color 1 1 1)
+      (x 608)
+      (y 192)
+    )
+    (magicblock
+      (x 192)
+      (y 288)
+      (color 1 1 1)
+    )
+    (magicblock
+      (x 288)
+      (y 288)
+      (color 1 0 0)
+    )
+    (magicblock
+      (x 384)
+      (y 288)
+      (color 0 1 0)
+    )
+    (magicblock
+      (x 480)
+      (y 288)
+      (color 0 0 1)
+    )
+    (magicblock
+      (x 576)
+      (y 288)
+      (color 1 1 0)
+    )
+    (magicblock
+      (x 640)
+      (y 288)
+      (color 1 0 1)
+    )
+    (magicblock
+      (x 736)
+      (y 288)
+      (color 0 1 1)
+    )
+    (magicblock
+      (x 832)
+      (y 288)
+      (color 0 0 0)
+    )
+    (magicblock
+      (x 288)
+      (y 288)
+      (color 1 0 0)
+    )
+    (tilemap
+      (z-pos -100)
+      (solid #f)
+      (speed 1)
+      (width 50)
+      (height 20)
+      (tiles 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0)
+    )
+    (tilemap
+      (z-pos 0)
+      (solid #t)
+      (speed 1)
+      (width 50)
+      (height 20)
+      (tiles 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0)
+    )
+    (tilemap
+      (z-pos 100)
+      (solid #f)
+      (speed 1)
+      (width 50)
+      (height 20)
+      (tiles 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0)
+    )
+    (background
+      (speed 0.5)
+      (image-top "images/background/arctis_top.jpg")
+      (image "images/background/arctis.jpg")
+      (image-bottom "images/background/arctis_bottom.jpg")
+    )
+  )
+)
diff --git a/src/object/magicblock.cpp b/src/object/magicblock.cpp
new file mode 100644
index 000000000..ef8d5b346
--- /dev/null
+++ b/src/object/magicblock.cpp
@@ -0,0 +1,102 @@
+//  $Id:$
+//
+//  SuperTux - MagicBlock
+//
+//  Magic Blocks are tile-like game objects that are sensitive to 
+//  lighting conditions. They are rendered in a color and
+//  will only be solid as long as light of the same color shines
+//  on the block.
+//
+//  Copyright (C) 2006 Wolfgang Becker <uafr@gmx.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 <vector>
+
+#include "magicblock.hpp"
+#include "object_factory.hpp"
+#include "sprite/sprite_manager.hpp"
+
+namespace {
+  const float MIN_INTENSITY = 0.8;
+  const float ALPHA_SOLID = 0.7;
+  const float ALPHA_NONSOLID = 0.3;
+}
+
+MagicBlock::MagicBlock(const lisp::Lisp& lisp)
+	: MovingSprite(lisp, "images/objects/magicblock/magicblock.sprite"),
+        is_solid(false), light(1.0f,1.0f,1.0f)
+{
+  set_group(COLGROUP_STATIC);
+  //get color from lisp
+  std::vector<float> vColor;
+  lisp.get_vector("color", vColor );
+  color = Color( vColor );
+
+  //all alpha to make the sprite still visible
+  color.alpha = ALPHA_SOLID;
+
+  //set trigger
+  trigger_red = (color.red == 1.0f ? MIN_INTENSITY : 0);
+  trigger_green = (color.green == 1.0f ? MIN_INTENSITY : 0);
+  trigger_blue = (color.blue == 1.0f ? MIN_INTENSITY : 0);
+
+  center =  Vector((get_bbox().p1.x+get_bbox().p2.x)/2,  
+                   (get_bbox().p1.y+get_bbox().p2.y)/2);
+}
+
+void
+MagicBlock::update(float /*elapsed_time*/)
+{
+  if(light.red >= trigger_red && light.green >= trigger_green 
+      && light.blue >= trigger_blue) {
+    is_solid = true;
+  } else {
+    is_solid = false;
+  }
+
+  //Update Sprite.
+  if(is_solid) {
+    color.alpha = ALPHA_SOLID;
+    sprite->set_action("solid");
+  } else {
+    color.alpha = ALPHA_NONSOLID;
+    sprite->set_action("normal");
+  }
+}
+
+void
+MagicBlock::draw(DrawingContext& context){
+  //Ask for update about lightmap at center of this block
+  context.get_light( center, &light );
+
+  //Draw the Sprite.
+  MovingSprite::draw(context);
+  //Add the color.
+  context.draw_filled_rect( get_bbox(), color, layer);
+}
+
+HitResponse
+MagicBlock::collision(GameObject& /*other*/, const CollisionHit& /*hit*/)
+{
+  if(is_solid) {
+    return SOLID;
+  } else {
+    return PASSTHROUGH;
+  }
+}
+
+IMPLEMENT_FACTORY(MagicBlock, "magicblock");
diff --git a/src/object/magicblock.hpp b/src/object/magicblock.hpp
new file mode 100644
index 000000000..a0592b919
--- /dev/null
+++ b/src/object/magicblock.hpp
@@ -0,0 +1,51 @@
+//  $Id$
+//
+//  SuperTux - MagicBlock
+// 
+//  Magic Blocks are tile-like game objects that are sensitive to 
+//  lighting conditions. They are rendered in a color and
+//  will only be solid as long as light of the same color shines
+//  on the block.
+//
+//  Copyright (C) 2006 Wolfgang Becker <uafr@gmx.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.
+
+#ifndef SUPERTUX_TRAMPOLINE_H
+#define SUPERTUX_TRAMPOLINE_H
+
+#include "moving_sprite.hpp"
+#include "lisp/lisp.hpp"
+
+class MagicBlock: public MovingSprite
+{
+public:
+  MagicBlock(const lisp::Lisp& reader);
+
+  HitResponse collision(GameObject& other, const CollisionHit& hit);
+  void update(float elapsed_time);
+  void draw(DrawingContext& context);
+
+private:
+  bool is_solid;
+  float trigger_red;
+  float trigger_green;
+  float trigger_blue;
+  Color color;
+  Color light;
+  Vector center;
+};
+
+#endif
diff --git a/src/object/trampoline.cpp b/src/object/trampoline.cpp
index c7c993934..c467dfc31 100644
--- a/src/object/trampoline.cpp
+++ b/src/object/trampoline.cpp
@@ -1,4 +1,4 @@
-//  $Id$
+//  $Id:$
 //
 //  SuperTux - Trampoline
 //  Copyright (C) 2006 Wolfgang Becker <uafr@gmx.de>
@@ -34,7 +34,7 @@ namespace {
 }
 
 Trampoline::Trampoline(const lisp::Lisp& lisp)
-	: MovingSprite(lisp, "images/objects/trampoline/trampoline.sprite" )
+	: MovingSprite(lisp, "images/objects/trampoline/trampoline.sprite")
 {
   set_group(COLGROUP_MOVING_STATIC);
   sound_manager->preload(TRAMPOLINE_SOUND);
@@ -66,7 +66,7 @@ Trampoline::update(float elapsed_time)
 }
 
 HitResponse
-Trampoline::collision(GameObject& other, const CollisionHit& hit )
+Trampoline::collision(GameObject& other, const CollisionHit& hit)
 {
   //Tramponine has to be on ground to work.
   if(!on_ground) {
@@ -115,7 +115,7 @@ Trampoline::grab(MovingObject&, const Vector& pos, Direction) {
 }
 
 void
-Trampoline::ungrab(MovingObject& , Direction ) {
+Trampoline::ungrab(MovingObject& , Direction) {
   set_group(COLGROUP_MOVING_STATIC);
   on_ground = false;
   physic.set_velocity(0, 0);
diff --git a/src/object/trampoline.hpp b/src/object/trampoline.hpp
index df751d8ff..c534f54c6 100644
--- a/src/object/trampoline.hpp
+++ b/src/object/trampoline.hpp
@@ -37,8 +37,8 @@ public:
   void collision_solid(const CollisionHit& hit);
   void update(float elapsed_time);
 
-  void grab( MovingObject&, const Vector& pos, Direction );
-  void ungrab(MovingObject& , Direction );
+  void grab(MovingObject&, const Vector& pos, Direction);
+  void ungrab(MovingObject&, Direction);
   bool is_portable() const;
 
 private:
diff --git a/src/video/drawing_context.cpp b/src/video/drawing_context.cpp
index 6f570d018..e8887a645 100644
--- a/src/video/drawing_context.cpp
+++ b/src/video/drawing_context.cpp
@@ -33,7 +33,6 @@
 #include "glutil.hpp"
 #include "texture.hpp"
 #include "texture_manager.hpp"
-
 #define LIGHTMAP_DIV 4
 
 static inline int next_po2(int val)
@@ -239,6 +238,42 @@ DrawingContext::draw_filled_rect(const Rect& rect, const Color& color,
 }
 
 void
+DrawingContext::get_light(const Vector& position, Color* color)
+{
+  if( ambient_color.red == 1.0f && ambient_color.green == 1.0f
+      && ambient_color.blue  == 1.0f ) {
+    *color = Color( 1.0f, 1.0f, 1.0f);
+    return;
+  }
+  DrawingRequest request;
+  request.type = GETLIGHT;
+  request.pos = transform.apply(position);
+  request.layer = LAYER_GUI; //make sure all get_light requests are handled last.
+
+  GetLightRequest* getlightrequest = new GetLightRequest;
+  getlightrequest->color_ptr = color;
+  request.request_data = getlightrequest;
+  lightmap_requests.push_back(request);
+}
+
+void
+DrawingContext::get_light(DrawingRequest& request)
+{
+  GetLightRequest* getlightrequest = (GetLightRequest*) request.request_data;
+
+  float pixels[3];
+  for( int i = 0; i<3; i++)
+    pixels[i] = 0.0f; //set to black
+
+  //TODO: not working as i thought. this only returns ambient_color. Why?
+  glReadPixels((GLint) request.pos.x, (GLint)request.pos.y, 1, 1, GL_RGB, GL_FLOAT, pixels);
+  *(getlightrequest->color_ptr) = Color( pixels[0], pixels[1], pixels[2]);
+  //printf("get_light %f/%f r%f g%f b%f\n", request.pos.x, request.pos.y, pixels[0], pixels[1], pixels[2]);
+
+  delete getlightrequest;
+}
+
+void
 DrawingContext::draw_surface_part(DrawingRequest& request)
 {
   SurfacePartRequest* surfacepartrequest
@@ -426,6 +461,9 @@ DrawingContext::handle_drawing_requests(DrawingRequests& requests)
       case LIGHTMAPREQUEST:
         draw_lightmap(*i);
         break;
+      case GETLIGHT:
+        get_light(*i);
+        break;
     }
   }
 }
diff --git a/src/video/drawing_context.hpp b/src/video/drawing_context.hpp
index fee498186..ee5d6ddc8 100644
--- a/src/video/drawing_context.hpp
+++ b/src/video/drawing_context.hpp
@@ -125,6 +125,9 @@ public:
   /// return currently set alpha
   float get_alpha() const;
 
+  /// on next update, set color to lightmap's color at position
+  void get_light(const Vector& position, Color* color );
+
   enum Target {
     NORMAL, LIGHTMAP
   };
@@ -162,7 +165,7 @@ private:
 
   enum RequestType
   {
-    SURFACE, SURFACE_PART, TEXT, GRADIENT, FILLRECT, LIGHTMAPREQUEST
+    SURFACE, SURFACE_PART, TEXT, GRADIENT, FILLRECT, LIGHTMAPREQUEST, GETLIGHT
   };
 
   struct SurfacePartRequest
@@ -215,6 +218,11 @@ private:
     }
   };
 
+  struct GetLightRequest
+  {
+    Color* color_ptr;
+  };
+  
   typedef std::vector<DrawingRequest> DrawingRequests;
 
   void handle_drawing_requests(DrawingRequests& requests);
@@ -224,6 +232,7 @@ private:
   void draw_gradient(DrawingRequest& request);
   void draw_filled_rect(DrawingRequest& request);
   void draw_lightmap(DrawingRequest& request);
+  void get_light(DrawingRequest& request);
 
   DrawingRequests drawing_requests;
   DrawingRequests lightmap_requests;