Scripting|libdoomsday: Added the "commonlib" module

libdoomsday has a script module called "commonlib" for common game-related functions.

commonlib defines the following methods:
- World.Thing.info()
- World.Thing.dropItem()

doomsday/apps/client/net.dengine.client.pack/modules/bootstrap.ds

@@ -1,5 +1,5 @@
 # DOOMSDAY CLIENT BOOTSTRAP
-# 
+#
 # This script is executed after the client application has been fully
 # initialized, immediately after subsystems are all ready. No game is
 # loaded at this stage, although all plugins have been enumerated.
@@ -26,7 +26,7 @@ def runLegacySavegameConversion(newGame)
 end
 
 def runPluginLoadHooks(newGame)
-    if newGame == 'null-game': return    
+    if newGame == 'null-game': return
     try
         gameConf = Config.plugin[App.gamePlugin()]
         for func in gameConf.onNextLoad: func()
@@ -42,12 +42,12 @@ end
 def addOnLoadHookForAllGames(function)
     for plug in subrecords(Config.plugin).values()
         plug.onNextLoad += [function]
-    end    
+    end
 end
 
 def cleanPackageFolders()
     # Config.resource.iwadFolder was used previously for IWADs
-    # (non-recursive), but now everything can be put in 
+    # (non-recursive), but now everything can be put in
     # Config.resource.packageFolder and recursing is specified
     # separately.
     try
@@ -73,23 +73,23 @@ end
 
 def upgradeMaintenance()
     if not 'OLD_VERSION' in Version: return
-    
+
     # Ensure that the default Tilde binding is present when upgrading
     # from an older version.
     if isUpgradedToBuild(920)
         # Register a single-shot hook that ensures the binding is present
         # after a game has been loaded the next time. This must be done
         # per-plugin as the bindings are stored separately for each.
-        # Config is persistent so these will be remembered even after 
+        # Config is persistent so these will be remembered even after
         # shutting down the app.
         addOnLoadHookForAllGames(bindDefaultConsoleTildeKey)
     end
-    
+
     # Add the default Menu key bindings.
     if isUpgradedToBuild(1479)
         addOnLoadHookForAllGames(bindWindowsMenuKey)
     end
-    
+
     cleanPackageFolders()
 end
 
@@ -121,3 +121,4 @@ App.audienceForGameAddition += [runLegacySavegameConversion]
 App.audienceForGameChange += [runPluginLoadHooks]
 
 import controllers
+import commonlib  # from net.dengine.base

doomsday/apps/libdoomsday/net.dengine.base.pack/modules/commonlib.ds

@@ -0,0 +1,28 @@
+# Additional functions for games
+
+import World, Math, Defs
+
+def World.Thing.info()
+    return Defs.things.order[self.type()]
+end
+
+def World.Thing.dropItem(type, force=1.0, lift=0.0, height=0.5, prob=1.0)
+    # Spawns an item at the position of the thing.
+    # - type:   Thing ID of the dropped item (Text).
+    # - force:  XY momentum of the dropped item (random direction).
+    # - lift:   Z momentum of the dropped item.
+    # - height: spawn position Z offset.
+    # - prob:   chance of dropping (1.0 is 100% certainty).
+    # Returns the dropped item, or None.
+    if Math.random() > prob: return None
+    pos = self.pos()
+    pos[2] = pos[2] + height * self.height()
+    item = World.spawnThing(type, pos)
+    if item
+        # Throw the item a little bit.
+        angle = 2 * Pi * Math.random()
+        mom = [force * Math.cos(angle), force * Math.sin(angle), lift]
+        item.addMom(mom)
+    end
+    return item
+end

doomsday/apps/server/src/serverapp.cpp

@@ -35,6 +35,7 @@
 #include <de/LogBuffer>
 #include <de/PackageFeed>
 #include <de/PackageLoader>
+#include <de/ScriptSystem>
 #include <de/c_wrapper.h>
 
 #include "serverapp.h"
@@ -274,6 +275,8 @@ void ServerApp::initialize()
 
     plugins().loadAll();
 
+    scriptSystem().importModule("commonlib"); // from net.dengine.base
+
     DD_FinishInitializationAfterWindowReady();
 }