From 07f2afa635c0ddfa491468cc3f8677cd0d869c6d Mon Sep 17 00:00:00 2001
From: truebrain <truebrain@openttd.org>
Date: Tue, 13 Jan 2009 13:09:49 +0000
Subject: (svn r15057) -Fix [NoAI]: clamp the values of a setting between the
 ones allowed by info.nut

---
 src/ai/ai_config.cpp | 7 ++++++-
 src/ai/ai_info.cpp   | 8 ++++++++
 src/ai/ai_info.hpp   | 5 +++++
 3 files changed, 19 insertions(+), 1 deletion(-)

(limited to 'src/ai')

diff --git a/src/ai/ai_config.cpp b/src/ai/ai_config.cpp
index dc7a3e48d..cc309b62f 100644
--- a/src/ai/ai_config.cpp
+++ b/src/ai/ai_config.cpp
@@ -88,7 +88,12 @@ int AIConfig::GetSetting(const char *name)
 void AIConfig::SetSetting(const char *name, int value)
 {
 	/* You can only set ai specific settings if an AI is selected. */
-	assert(strcmp(name, "start_date") == 0 || this->info != NULL);
+	assert(this->info != NULL);
+
+	const AIConfigItem *config_item = this->info->GetConfigItem(name);
+	if (config_item == NULL) return;
+
+	value = Clamp(value, config_item->min_value, config_item->max_value);
 
 	SettingValueList::iterator it = this->settings.find(name);
 	if (it != this->settings.end()) {
diff --git a/src/ai/ai_info.cpp b/src/ai/ai_info.cpp
index 9e439cce2..c68972c45 100644
--- a/src/ai/ai_info.cpp
+++ b/src/ai/ai_info.cpp
@@ -295,6 +295,14 @@ const AIConfigItemList *AIInfo::GetConfigList()
 	return &this->config_list;
 }
 
+const AIConfigItem *AIInfo::GetConfigItem(const char *name)
+{
+	for (AIConfigItemList::iterator it = this->config_list.begin(); it != this->config_list.end(); it++) {
+		if (strcmp((*it).name, name) == 0) return &(*it);
+	}
+	return NULL;
+}
+
 int AIInfo::GetSettingDefaultValue(const char *name)
 {
 	for (AIConfigItemList::iterator it = this->config_list.begin(); it != this->config_list.end(); it++) {
diff --git a/src/ai/ai_info.hpp b/src/ai/ai_info.hpp
index 205e89b38..9d283966d 100644
--- a/src/ai/ai_info.hpp
+++ b/src/ai/ai_info.hpp
@@ -126,6 +126,11 @@ public:
 	 */
 	const AIConfigItemList *GetConfigList();
 
+	/**
+	 * Get the description of a certain ai config option.
+	 */
+	const AIConfigItem *GetConfigItem(const char *name);
+
 	/**
 	 * Set a setting.
 	 */
-- 
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