picking apart a few models

src/main/kotlin/entries/BGSimulation.kt

@@ -1,6 +1,7 @@
 package entries
 
 import simulation.*
+import simulation.dice.DiceBag
 import simulation.dice.RollType
 import simulation.fifthEd.AttackResult
 import simulation.fifthEd.AttackSimulatorModel
@@ -10,17 +11,39 @@ import simulation.fifthEd.SimpleMeleeAttackAction
 fun main() {
     val rounds = 1_000_000
     val start = System.currentTimeMillis()
-    val computedRounds = doSimulation(rounds)
+//    val computedRounds = doSimulation(rounds)
+crunchBarbarian(21)
+//    crunchMonk()
     val finish = System.currentTimeMillis()
-    println("Simulation finished $computedRounds rounds in: ${finish - start}ms")
+//    println("Simulation finished $computedRounds rounds in: ${finish - start}ms")
+    println("Simulation finished in: ${finish - start}ms")
 }
 
 const val avgDamage = "Avg Dmg"
 
-fun doSimulation(rounds: Int): Long {
+
+fun crunchMonk(ac: Int= 18) {
+    val attackRoll = MeleeAttackBuilder("1d20", "1d8", ac)
+        .withAtkBonus(11)
+        .withDmgBonus(7)
+        .build()
+
+    val attackBless = MeleeAttackBuilder("1d20", "1d8", ac)
+        .withAtkBonus(11)
+        .withAtkBonus(DiceBag.plainDice("1d4"))
+        .withDmgBonus(7)
+        .build()
+
+    val attacks = listOf(Pair("Normal Attack", attackRoll), Pair("Bless Attack", attackBless))
 
 
-    val defense = 18
+
+    generateCombatSuggestions(attacks, 1000000, defaultReport())
+}
+
+fun crunchBarbarian(defense: Int = 16){
+
+    val rounds = 1_000_000
 
     val attackDice = "1d20"
     val weaponDice = "2d6"
@@ -46,14 +69,9 @@ fun doSimulation(rounds: Int): Long {
         .build()
 
     val attacks = listOf(Pair("Normal Attack", normalAttack), Pair("GWM Attack", gwmAttack))
-    val reportFactory = ReportBuilder.getInstance()
-        .addRateMetric("Accuracy") { it.rollSucceeded }
-        .addRateMetric("Crit Rate") { it.rollSucceeded }
-        .addAverageMetric(avgDamage) { it.resultingDamage.toLong() }
 
-    generateCombatSuggestions(attacks, rounds, reportFactory)
 
-    return rounds.toLong() * attacks.size.toLong()
+    generateCombatSuggestions(attacks, rounds, defaultReport())
 }
 
 fun generateCombatSuggestions(
@@ -65,7 +83,7 @@ fun generateCombatSuggestions(
     val results = attacks
         .associateWith { attackInfo ->
 
-            val label = "${attackInfo.first}"
+            val label = attackInfo.first
             val attack = attackInfo.second
 
             RollType.entries.associateWith {
@@ -74,7 +92,11 @@ fun generateCombatSuggestions(
 
                 val report = reportFactory.build(label)
 
-                report.computeResults(results)
+                print("${attackInfo.first} $it\t")
+
+                val res = report.computeResults(results)
+                println(Report.formatReport(res.name, res.results))
+                res
             }.toMap()
         }
 
@@ -86,10 +108,10 @@ fun generateCombatSuggestions(
 
         results.forEach { attackAction ->
             val current = attackAction.value[rollType]
-            if(choice == null){
-                    choice = current
-            }else{
-                if(current?.results?.getDamage()!!.metricValue > choice!!.results.getDamage()!!.metricValue){
+            if (choice == null) {
+                choice = current
+            } else {
+                if (current?.results?.getDamage()!!.metricValue > choice!!.results.getDamage()!!.metricValue) {
                     choice = current
                 }
             }
@@ -100,6 +122,14 @@ fun generateCombatSuggestions(
     }
 }
 
+fun defaultReport(): ReportBuilder{
+    return ReportBuilder.getInstance()
+        .addRateMetric("Accuracy") { it.rollSucceeded }
+        .addRateMetric("Crit Rate") { it.rollSucceeded }
+        .addStdDevMetric("Dmg std") { it.resultingDamage.toLong() }
+        .addAverageMetric(avgDamage) { it.resultingDamage.toLong() }
+}
+
 
 fun List<MetricResult>.getDamage(): MetricResult? {
 

src/main/kotlin/simulation/Reporting.kt

@@ -10,7 +10,7 @@ interface Report {
     val name: String
     val metrics: List<Metric<Double>>
 
-    companion object{
+    companion object {
         fun formatReport(name: String, results: List<MetricResult>): String {
             val builder = StringBuilder()
             results.forEach {
@@ -23,7 +23,7 @@ interface Report {
     }
 
 
-    fun computeResults(results: List<AttackResult>): MetricReport{
+    fun computeResults(results: List<AttackResult>): MetricReport {
         val m = ArrayList<MetricResult>(metrics.size)
         metrics.forEach {
             val value = it.mapToMetric(results)
@@ -59,6 +59,11 @@ interface ReportBuilder {
         metrics.add(RateMetric(metricName, fieldMapFn))
         return this
     }
+
+    fun addStdDevMetric(metricName: String, fieldMapFn: (AttackResult) -> Long): ReportBuilder {
+        metrics.add(StdDevMetric(metricName, fieldMapFn))
+        return this
+    }
 }
 
 class ReportBuilderImpl : ReportBuilder {