From a3dd7506d377b1434f913bd65c019eed52b64b6e Mon Sep 17 00:00:00 2001
From: truebrain <truebrain@openttd.org>
Date: Mon, 12 Jan 2009 17:11:45 +0000
Subject: (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

---
 src/ai/api/ai_sign.cpp | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 src/ai/api/ai_sign.cpp

(limited to 'src/ai/api/ai_sign.cpp')

diff --git a/src/ai/api/ai_sign.cpp b/src/ai/api/ai_sign.cpp
new file mode 100644
index 000000000..561b5c857
--- /dev/null
+++ b/src/ai/api/ai_sign.cpp
@@ -0,0 +1,73 @@
+/* $Id$ */
+
+/** @file ai_sign.cpp Implementation of AISign. */
+
+#include "ai_sign.hpp"
+#include "table/strings.h"
+#include "../ai_instance.hpp"
+#include "../../openttd.h"
+#include "../../command_func.h"
+#include "../../core/alloc_func.hpp"
+#include "../../signs_base.h"
+#include "../../string_func.h"
+#include "../../strings_func.h"
+#include "../../tile_map.h"
+#include "../../company_func.h"
+
+/* static */ SignID AISign::GetMaxSignID()
+{
+	return ::GetMaxSignIndex();
+}
+
+/* static */ bool AISign::IsValidSign(SignID sign_id)
+{
+	return ::IsValidSignID(sign_id) && ::GetSign(sign_id)->owner == _current_company;
+}
+
+/* static */ bool AISign::SetName(SignID sign_id, const char *name)
+{
+	EnforcePrecondition(false, IsValidSign(sign_id));
+	EnforcePrecondition(false, !::StrEmpty(name));
+	EnforcePreconditionCustomError(false, ::strlen(name) < MAX_LENGTH_SIGN_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
+
+	return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN, name);
+}
+
+/* static */ const char *AISign::GetName(SignID sign_id)
+{
+	if (!IsValidSign(sign_id)) return NULL;
+
+	static const int len = 64;
+	char *sign_name = MallocT<char>(len);
+
+	::SetDParam(0, sign_id);
+	::GetString(sign_name, STR_SIGN_NAME, &sign_name[len - 1]);
+
+	return sign_name;
+}
+
+/* static */ TileIndex AISign::GetLocation(SignID sign_id)
+{
+	if (!IsValidSign(sign_id)) return INVALID_TILE;
+
+	const Sign *sign = ::GetSign(sign_id);
+	return ::TileVirtXY(sign->x, sign->y);
+}
+
+/* static */ bool AISign::RemoveSign(SignID sign_id)
+{
+	EnforcePrecondition(false, IsValidSign(sign_id));
+	return AIObject::DoCommand(0, sign_id, 0, CMD_RENAME_SIGN, "");
+}
+
+/* static */ SignID AISign::BuildSign(TileIndex location, const char *text)
+{
+	EnforcePrecondition(INVALID_SIGN, ::IsValidTile(location));
+	EnforcePrecondition(INVALID_SIGN, !::StrEmpty(text));
+	EnforcePreconditionCustomError(false, ::strlen(text) < MAX_LENGTH_SIGN_NAME_BYTES, AIError::ERR_PRECONDITION_STRING_TOO_LONG);
+
+	if (!AIObject::DoCommand(location, 0, 0, CMD_PLACE_SIGN, text, &AIInstance::DoCommandReturnSignID)) return INVALID_SIGN;
+
+	/* In case of test-mode, we return SignID 0 */
+	return 0;
+}
-- 
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