Author: dragonking
Date: Fri May 23 13:24:07 2008
New Revision: 26789
URL: http://svn.gna.org/viewcvs/wesnoth?rev=26789&view=rev
Log:
New formula AI function: evaluate_village_possession
Modified:
trunk/src/formula_ai.cpp
Modified: trunk/src/formula_ai.cpp
URL:
http://svn.gna.org/viewcvs/wesnoth/trunk/src/formula_ai.cpp?rev=26789&r1=26788&r2=26789&view=diff
==============================================================================
--- trunk/src/formula_ai.cpp (original)
+++ trunk/src/formula_ai.cpp Fri May 23 13:24:07 2008
@@ -386,6 +386,71 @@
const gamemap::location& loc() const { return loc_; }
const std::string& type() const { return type_; }
+};
+
+class evaluate_village_possession_function : public function_expression {
//TODO
+public:
+ evaluate_village_possession_function(const args_list& args, const
formula_ai& ai)
+ : function_expression("evaluate_village_possession", args, 0, 0),
ai_(ai) {
+ }
+
+private:
+ variant execute(const formula_callable& variables) const {
+
+ int villages_number = ai_.get_info().map.villages().size();
+
+ //in case there are few villages, ignore this evaluation
+ if (villages_number < 6)
+ return variant(50);
+
+ int allied_villages_number = 0;
+ int opponents_villages_number = 0;
+ int allies = 0;
+
+ int teams_number = ai_.get_info().teams.size();
+ for( int i = 0; i < teams_number; ++i)
+ {
+ if ( ai_.current_team().is_enemy(i+1) )
+ {
+ opponents_villages_number +=
ai_.get_info().teams[i].villages().size();
+ } else
+ {
+ ++allies;
+ allied_villages_number +=
ai_.get_info().teams[i].villages().size();
+ }
+ }
+
+ int controlled_villages = allied_villages_number +
opponents_villages_number;
+
+ //how important is each village, but multipled by 50
+ int single_village_ratio = 0;
+
+ if (villages_number != 0)
+ single_village_ratio = 5000/villages_number;
+
+ int village_state = allied_villages_number -
opponents_villages_number;
+
+ //up to this point, vilage_state contains state of the villages
in AI's team
+ //now check how the AI is doing compared to its allies
+
+ int ai_villages = ai_.current_team().villages().size();
+
+ int ai_desired_villages = allied_villages_number / allies;
+
+ village_state += ai_villages - ai_desired_villages;
+
+ //calculate evaluation
+ int evaluation = 50 + (village_state *
single_village_ratio)/100;
+
+ if (evaluation > 100)
+ evaluation = 100;
+ if (evaluation < 0)
+ evaluation = 0;
+
+ return variant(evaluation);
+ }
+
+ const formula_ai& ai_;
};
class recruit_function : public function_expression {
@@ -809,6 +874,8 @@
return expression_ptr(new outcomes_function(args, ai_));
} else if(fn == "evaluate_for_position") {
return expression_ptr(new
evaluate_for_position_function(args, ai_));
+ } else if(fn == "evaluate_village_possession") {
+ return expression_ptr(new
evaluate_village_possession_function(args, ai_));
} else if(fn == "move") {
return expression_ptr(new move_function(args));
} else if(fn == "attack") {
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