(svn r15027) -Merge: tomatos and bananas left to be, here is NoAI for all to see.

  NoAI is an API (a framework) to build your own AIs in. See:
   http://wiki.openttd.org/wiki/index.php/AI:Main_Page
 With many thanks to:
  - glx and Rubidium for their syncing, feedback and hard work
  - Yexo for his feedback, patches, and AIs which tested the system very deep
  - Morloth for his feedback and patches
  - TJIP for hosting a challenge which kept NoAI on track
  - All AI authors for testing our AI API, and all other people who helped in one way or another
-Remove: all old AIs and their cheats/hacks

1 files changed, 66 insertions, 0 deletions

diff --git a/src/ai/ai_info_dummy.cpp b/src/ai/ai_info_dummy.cpp
new file mode 100644
index 000000000..a060a0a65
--- /dev/null
+++ b/src/ai/ai_info_dummy.cpp
@@ -0,0 +1,66 @@
+/* $Id$ */
+
+#include <squirrel.h>
+#include "../stdafx.h"
+
+/* The reason this exists in C++, is that a user can trash his ai/ dir,
+ *  leaving no AIs available. The complexity to solve this is insane, and
+ *  therefor the alternative is used, and make sure there is always an AI
+ *  available, no matter what the situation is. By defining it in C++, there
+ *  is simply now way a user can delete it, and therefor safe to use. It has
+ *  to be noted that this AI is complete invisible for the user, and impossible
+ *  to select manual. It is a fail-over in case no AIs are available.
+ */
+
+const SQChar dummy_script_info[] = _SC("                                                        \n\
+class DummyAI extends AIInfo {                                                                  \n\
+  function GetAuthor()      { return \"OpenTTD NoAI Developers Team\"; }                        \n\
+  function GetName()        { return \"DummyAI\"; }                                             \n\
+  function GetDescription() { return \"A Dummy AI that is loaded when your ai/ dir is empty\"; }\n\
+  function GetVersion()     { return 1; }                                                       \n\
+  function GetDate()        { return \"2008-07-26\"; }                                          \n\
+  function CreateInstance() { return \"DummyAI\"; }                                             \n\
+}                                                                                               \n\
+                                                                                                \n\
+RegisterDummyAI(DummyAI());                                                                     \n\
+");
+
+const SQChar dummy_script[] = _SC("                                                             \n\
+class DummyAI extends AIController {                                                            \n\
+  function Start() {                                                                            \n\
+    AILog.Error(\"No suitable AI found to load.\");                                             \n\
+    AILog.Error(\"This AI is a dummy AI and won't do anything.\");                              \n\
+    AILog.Error(\"Please add one or several AIs in your ai/ directory.\");                      \n\
+  }                                                                                             \n\
+}                                                                                               \n\
+");
+
+void AI_CreateAIInfoDummy(HSQUIRRELVM vm)
+{
+	sq_pushroottable(vm);
+
+	/* Load and run the script */
+	if (SQ_SUCCEEDED(sq_compilebuffer(vm, dummy_script_info, scstrlen(dummy_script_info), _SC("dummy"), SQTrue))) {
+		sq_push(vm, -2);
+		if (SQ_SUCCEEDED(sq_call(vm, 1, SQFalse, SQTrue))) {
+			sq_pop(vm, 1);
+			return;
+		}
+	}
+	NOT_REACHED();
+}
+
+void AI_CreateAIDummy(HSQUIRRELVM vm)
+{
+	sq_pushroottable(vm);
+
+	/* Load and run the script */
+	if (SQ_SUCCEEDED(sq_compilebuffer(vm, dummy_script, scstrlen(dummy_script), _SC("dummy"), SQTrue))) {
+		sq_push(vm, -2);
+		if (SQ_SUCCEEDED(sq_call(vm, 1, SQFalse, SQTrue))) {
+			sq_pop(vm, 1);
+			return;
+		}
+	}
+	NOT_REACHED();
+}