dave/openttd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

(svn r23366) -Codechange: move most of the Dummy code to script/, unifying it

Browse Source
This commit is contained in:
truebrain
2011-11-29 23:26:52 +00:00
parent 7050650354
commit bfbadccf69
12 changed files with 61 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

112
src/ai/ai_info_dummy.cpp
View File

@@ -1,112 +0,0 @@
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file ai_info_dummy.cpp Implementation of a dummy AI. */
#include <squirrel.h>
#include "../stdafx.h"
#include "../string_func.h"
#include "../strings_func.h"
#include "table/strings.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.
*/
/** info.nut for the dummy AI. */
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 GetShortName() { return \"DUMM\"; } \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\
");
/** Run the dummy info.nut. */
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();
}
/** Run the dummy AI and let it generate an error message. */
void AI_CreateAIDummy(HSQUIRRELVM vm)
{
/* We want to translate the error message.
* We do this in three steps:
* 1) We get the error message
*/
char error_message[1024];
GetString(error_message, STR_ERROR_AI_NO_AI_FOUND, lastof(error_message));
/* Make escapes for all quotes and slashes. */
char safe_error_message[1024];
char *q = safe_error_message;
for (const char *p = error_message; *p != '\0' && q < lastof(safe_error_message) - 2; p++, q++) {
if (*p == '"' || *p == '\\') *q++ = '\\';
*q = *p;
}
*q = '\0';
/* 2) We construct the AI's code. This is done by merging a header, body and footer */
char dummy_script[4096];
char *dp = dummy_script;
dp = strecpy(dp, "class DummyAI extends AIController {\n function Start()\n {\n", lastof(dummy_script));
/* As special trick we need to split the error message on newlines and
* emit each newline as a separate error printing string. */
char *newline;
char *p = safe_error_message;
do {
newline = strchr(p, '\n');
if (newline != NULL) *newline = '\0';
dp += seprintf(dp, lastof(dummy_script), " AILog.Error(\"%s\");\n", p);
p = newline + 1;
} while (newline != NULL);
dp = strecpy(dp, " }\n}\n", lastof(dummy_script));
/* 3) We translate the error message in the character format that Squirrel wants.
* We can use the fact that the wchar string printing also uses %s to print
* old style char strings, which is what was generated during the script generation. */
const SQChar *sq_dummy_script = OTTD2SQ(dummy_script);
/* And finally we load and run the script */
sq_pushroottable(vm);
if (SQ_SUCCEEDED(sq_compilebuffer(vm, sq_dummy_script, scstrlen(sq_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();
}

6
src/ai/ai_instance.cpp
View File

@@ -229,6 +229,12 @@ void AIInstance::Died()
}
}
void AIInstance::LoadDummyScript()
{
extern void Script_CreateDummy(HSQUIRRELVM vm, StringID string, const char *type);
Script_CreateDummy(this->engine->GetVM(), STR_ERROR_AI_NO_AI_FOUND, "AI");
}
/**
* DoCommand callback function for all commands executed by AIs.
* @param result The result of the command.

1
src/ai/ai_instance.hpp
View File

@@ -32,6 +32,7 @@ private:
/* virtual */ void RegisterAPI();
/* virtual */ void Died();
/* virtual */ CommandCallback *GetDoCommandCallback();
/* virtual */ void LoadDummyScript();
/**
* Load squirrel scripts to emulate an older API.

4
src/ai/ai_scanner.cpp
View File

@@ -34,8 +34,8 @@ void AIScannerInfo::Initialize(const char *name)
/* Create the dummy AI */
free(this->main_script);
this->main_script = strdup("%_dummy");
extern void AI_CreateAIInfoDummy(HSQUIRRELVM vm);
AI_CreateAIInfoDummy(this->engine->GetVM());
extern void Script_CreateDummyInfo(HSQUIRRELVM vm, const char *type, const char *dir);
Script_CreateDummyInfo(this->engine->GetVM(), "AI", "ai");
}
void AIScannerInfo::SetDummyAI(class AIInfo *info)