From fff6a103cf0873ea6e72148500d8259d12d86418 Mon Sep 17 00:00:00 2001
From: Florian Forster <supertux@octo.it>
Date: Thu, 11 Feb 2010 09:25:36 +0000
Subject: [PATCH] Bug 527: Limit tilemap and background layers to (LAYER_GUI -
 100).

This way tilemaps and backgrounds can no longer overlap the menu.
Resolves #527.

SVN-Revision: 6318
---
 src/object/background.cpp |  6 ++++++
 src/object/tilemap.cpp    | 16 +++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/object/background.cpp b/src/object/background.cpp
index 67cf854e6..422592b38 100644
--- a/src/object/background.cpp
+++ b/src/object/background.cpp
@@ -105,6 +105,12 @@ Background::Background(const Reader& reader) :
   reader.get("scroll-speed-y", scroll_speed.y);
 
   reader.get("layer", layer);
+  if (layer > (LAYER_GUI - 100)) {
+    log_warning << "Layer of background (" << layer << ") is too large. "
+      << "Clipping to " << (LAYER_GUI - 100) << "." << std::endl;
+    layer = LAYER_GUI - 100;
+  }
+
   if(!reader.get("image", imagefile) || !reader.get("speed", speed))
     throw std::runtime_error("Must specify image and speed for background");
 
diff --git a/src/object/tilemap.cpp b/src/object/tilemap.cpp
index 7dce250ab..6f2019588 100644
--- a/src/object/tilemap.cpp
+++ b/src/object/tilemap.cpp
@@ -80,6 +80,14 @@ TileMap::TileMap(const Reader& reader) :
     speed_y = 1;
   }
 
+  if (z_pos > (LAYER_GUI - 100)) {
+    log_warning << "z-pos of "
+      << ((name == "") ? "unnamed tilemap" : name) << " (" << z_pos << ") "
+      << "is too large. "
+      << "Clipping to " << (LAYER_GUI - 100) << "." << std::endl;
+    z_pos = LAYER_GUI - 100;
+  }
+
   const lisp::Lisp* pathLisp = reader.get_lisp("path");
   if (pathLisp) {
     path.reset(new Path());
@@ -147,6 +155,9 @@ TileMap::TileMap(const TileSet *new_tileset, std::string name, int z_pos,
 {
   this->name = name;
 
+  if (this->z_pos > (LAYER_GUI - 100))
+    this->z_pos = LAYER_GUI - 100;
+
   resize(width, height);
 }
 
@@ -280,7 +291,10 @@ TileMap::set(int newwidth, int newheight, const std::vector<unsigned int>&newt,
   tiles.resize(newt.size());
   tiles = newt;
 
-  z_pos  = new_z_pos;
+  if (new_z_pos > (LAYER_GUI - 100))
+    z_pos = LAYER_GUI - 100;
+  else
+    z_pos  = new_z_pos;
   solid  = newsolid;
 
   // make sure all tiles are loaded
-- 
2.11.0