Index: code/trunk/data/gui/scripts/CampaignMenu.lua
===================================================================
--- code/trunk/data/gui/scripts/CampaignMenu.lua	(revision 10258)
+++ code/trunk/data/gui/scripts/CampaignMenu.lua	(revision 10258)
@@ -0,0 +1,97 @@
+--CampaignMenu.lua
+
+local P = createMenuSheet("CampaignMenu")
+
+function P:onShow()
+    P:updateButtons()
+end
+
+function P.updateButtons()
+    P.updateButton(0, winMgr:getWindow("orxonox/MissionOneButton"))
+    P.updateButton(1, winMgr:getWindow("orxonox/MissionTwoButton"))
+    P.updateButton(2, winMgr:getWindow("orxonox/MissionThreeButton"))
+    P.updateButton(3, winMgr:getWindow("orxonox/MissionFourButton"))
+
+    if (P.getIndexOfLastFinishedMission() == orxonox.LevelManager:getInstance():getNumberOfCampaignMissions() - 1) then
+        local label = winMgr:getWindow("orxonox/CampaignMenuCongratulation")
+        label:setProperty("Visible","True")
+    end
+end
+
+function P.updateButton(index, button)
+    if (P.shouldDisplayButton(index)) then
+        button:setProperty("Visible", "True")
+
+        if (P.shouldEnableButton(index)) then
+            button:setProperty("Disabled", "False")
+        end
+    end
+end
+
+function P.shouldDisplayButton(index)
+    local size = orxonox.LevelManager:getInstance():getNumberOfCampaignMissions()
+    return index < size
+end
+
+function P.shouldEnableButton(index)
+    return index <= P.getIndexOfLastFinishedMission() + 1
+end
+
+function P.getIndexOfLastFinishedMission()
+    local lastMission = orxonox.LevelManager:getInstance():getLastFinishedCampaignMission()
+    if (lastMission and lastMission ~= "") then
+        local size = orxonox.LevelManager:getInstance():getNumberOfCampaignMissions()
+        local index = 0
+        while index < size do
+            local mission = orxonox.LevelManager:getInstance():getCampaignMission(index)
+            if (mission == lastMission) then 
+                return index
+            end
+            index = index + 1
+        end
+    end
+    return -1
+end
+
+function P.MissionOneButton_clicked(e)
+    P.loadLevel(P.FindLevel(0))
+end
+
+function P.MissionTwoButton_clicked(e)
+    P.loadLevel(P.FindLevel(1))
+end
+
+function P.MissionThreeButton_clicked(e)
+    P.loadLevel(P.FindLevel(2))
+end
+
+function P.MissionFourButton_clicked(e)
+    P.loadLevel(P.FindLevel(3))
+end
+
+function P.loadLevel(level)
+    orxonox.execute("startGame " .. level:getXMLFilename())
+    hideAllMenuSheets()
+end
+
+function P.FindLevel(index)
+    local filename = orxonox.LevelManager:getInstance():getCampaignMission(index)
+    local level = nil
+    local templevel = nil
+    local size = orxonox.LevelManager:getInstance():getNumberOfLevels()
+    local index = 0
+    while index < size do
+        templevel = orxonox.LevelManager:getInstance():getAvailableLevelListItem(index)
+        if(templevel:getXMLFilename()==filename) then 
+            level = templevel
+        end
+    index=index+1
+    end
+    return level
+end
+
+function P.CampaignMenuBackButton_clicked(e)
+    hideMenuSheet(P.name)
+end
+
+return P
Index: code/trunk/data/gui/scripts/SingleplayerMenu.lua
===================================================================
--- code/trunk/data/gui/scripts/SingleplayerMenu.lua	(revision 10216)
+++ code/trunk/data/gui/scripts/SingleplayerMenu.lua	(revision 10258)
@@ -2,5 +2,5 @@
 
 local P = createMenuSheet("SingleplayerMenu")
-P.loadAlong = {"ShipSelectionMenu"}
+P.loadAlong = {"ShipSelectionMenu","CampaignMenu"}
 P.levelList = {}
 P.activeTabIndexes = {}
@@ -23,5 +23,5 @@
     P.SingleplayerSelectionChanged()
 
-    --buttons are arranged in a 1x3 matrix
+    --buttons are arranged in a 2x3 matrix
     P:setButton(1, 1, {
             ["button"] = winMgr:getWindow("orxonox/SingleplayerStartButton"),
@@ -37,4 +37,9 @@
             ["button"] = winMgr:getWindow("orxonox/SingleplayerBackButton"),
             ["callback"]  = P.SingleplayerBackButton_clicked
+    })
+
+    P:setButton(2, 2,{
+            ["button"] = winMgr:getWindow("orxonox/CampaignButton"),
+            ["callback"] = P.CampaignButton_clicked
     })
 end
@@ -166,3 +171,7 @@
 end
 
+function P.CampaignButton_clicked(e)
+    showMenuSheet("CampaignMenu", true)
+end
+
 return P
