package dk.itu.mario.level.grammar;

import dk.itu.mario.level.LevelArchetype;
import dk.itu.mario.level.LevelComponent;
import dk.itu.mario.level.PlayerProfile;


public class LevelGrammarFactory {
	public static LevelGrammar createGrammar(PlayerProfile playerProfile, LevelArchetype archetype) {
		LevelGrammar grammar = new LevelGrammar();
		
		Variable v_START = new Variable("S", LevelComponent.TYPE.LEVEL);
		Variable v_LAND_SEGMENT = new Variable("HALF_LVL", LevelComponent.TYPE.LEVEL_SEGMENT);
		Variable v_LO_HI = new Variable("LO_HI", LevelComponent.TYPE.LO_HI);
		Variable v_HI_LO = new Variable("HI_LO", LevelComponent.TYPE.HI_LO);
		Variable v_LO_PATH = new Variable("LO_PATH", LevelComponent.TYPE.LO_PATH);
		Variable v_HI_PATH = new Variable("HI_PATH", LevelComponent.TYPE.HI_PATH);
		Variable v_lo_path = new Variable("lo_path", LevelComponent.TYPE.LO_PATH);
		Variable v_hi_path = new Variable("hi_path", LevelComponent.TYPE.HI_PATH);
		
		grammar.addVariable(v_START);
		grammar.addVariable(v_LAND_SEGMENT);
		grammar.addVariable(v_LO_HI);
		grammar.addVariable(v_HI_LO);
		grammar.addVariable(v_LO_PATH);
		grammar.addVariable(v_HI_PATH);
		
		grammar.addProductionRule(new ProductionRule(v_START,v_LAND_SEGMENT,v_LAND_SEGMENT));
		
		grammar.addProductionRule(
				new ProductionRule(v_LAND_SEGMENT,
						new OrClause( new double[] {0.25,0.65,0.10},
								new AndClause(v_LO_HI,v_HI_LO),
								v_LO_PATH,
								new AndClause(v_LAND_SEGMENT,v_LAND_SEGMENT)
						)
				)
		);
		
		grammar.addProductionRule(
				new ProductionRule(v_LO_HI, v_LO_PATH, v_HI_PATH)
		);
		
		grammar.addProductionRule(
				new ProductionRule(v_HI_LO, v_HI_PATH, v_LO_PATH)
		);
		
		grammar.addProductionRule(
				new ProductionRule(v_HI_PATH,
						new OrClause( new double[] {0.25,0.75},
								new AndClause(v_HI_PATH,v_HI_PATH),
								v_hi_path
						)
				)
		);
		
		grammar.addProductionRule(
				new ProductionRule(v_LO_PATH,
						new OrClause( new double[] {0.25,0.75},
								new AndClause(v_LO_PATH,v_LO_PATH),
								v_lo_path
						)
				)
		);
		
		grammar.setStart(v_START);
		
		return grammar;
	}
}