Improve skills

core/src/me/msoucy/ptures/model/Creature.kt

@@ -1,14 +1,17 @@
 package me.msoucy.ptures.model
 
 import com.badlogic.gdx.math.MathUtils.clamp
+import com.badlogic.gdx.math.MathUtils.random
 
 class Stats(var atk : Int, var def : Int, var spd : Int, var hp : Int)
 
 class Creature {
-    var genes = Stats(5,5,5,5)
+    val genes = Stats(5,5,5,5)
-    var growth = Stats(5,5,5,5)
+    val growth = Stats(5,5,5,5)
+    val attributes = mutableMapOf<Attribute, Int>()
     var level = 1
     var currentHp = 1
+    val skills = mutableListOf<Skill>()
     val statuses = mutableListOf<Status>()
 
     val atk : Int get() = statFormula(genes.atk, growth.atk)
@@ -16,8 +19,19 @@ class Creature {
     val spd : Int get() = statFormula(genes.atk, growth.atk)
     val maxHp : Int get() = statFormula(genes.atk, growth.atk)
 
-    fun apply(dmg : Damage) {
+    fun apply(dmg : Damage, attacker : Creature) {
-        currentHp = clamp(currentHp - dmg.power, 0, maxHp)
+        val critical = if (random(32) < attacker.genes.spd) { 1.5 } else { 1.0 }
+        val randVal = random(0.85f, 1.0f)
+        val effectiveness = 1.0
+        val modifier = critical * randVal * effectiveness
+        val power = (((0.4 * attacker.level) + 2) * dmg.power * (attacker.atk / def)) / 50 + 2
+        val total : Int = (power * modifier).toInt()
+        currentHp = clamp(currentHp - total, 0, maxHp)
+
+        if(currentHp == 0) {
+            statuses.clear()
+            addStatus(KnockedOut)
+        }
     }
 
     fun addStatus(status : Status) {
@@ -37,5 +51,10 @@ class Creature {
         statuses.clear()
     }
 
+    fun hits(creature : Creature, damage : Damage) =
+            random(100) < damage.accuracy + spd - creature.spd
+
+    inline fun <reified S : Status> hasStatus() = statuses.filter { it is S }.isNotEmpty()
+
     private fun statFormula(gene : Int, growth : Int) = (2 * gene + growth) * level / 100 + 5
 }

core/src/me/msoucy/ptures/model/Engine.kt

@@ -1,6 +1,6 @@
 package me.msoucy.ptures.model
 
-class Engine(vararg val creatures : Creature) {
+class Engine(vararg val creatures : Pair<Creature, Int>) {
     init {
         assert(creatures.isNotEmpty())
     }
@@ -8,6 +8,45 @@ class Engine(vararg val creatures : Creature) {
     var currentCreature = 0
 
     val attacker : Creature get() {
-        return creatures[currentCreature]
+        return creatures[currentCreature].first
+    }
+
+    fun resolveTurn() {
+        val activeCreatures = creatures.withIndex()
+                .filter { (_, c) -> !c.first.hasStatus<KnockedOut>() }
+                .sortedBy { (_, c) -> c.first.spd }
+        // Get the moves each creature will use this turn
+        val moves = activeCreatures.map { (_, c) -> Pair(c.first.skills[0], 0) }
+        val wasHit = mutableListOf<Creature>()
+        for ((i, c) in activeCreatures) {
+            // Resolve move
+            val (skill, target) = moves[i]
+            currentCreature = i
+            for (step in skill.damageSteps) {
+                val targets = getTargetList(step.target, currentCreature, target)
+                for (t in targets) {
+                    val (targetCreature, _) = creatures[t]
+                    if (attacker.hits(targetCreature, step)) {
+                        targetCreature.apply(step, c.first)
+                        wasHit.add(targetCreature)
+                    }
+                }
+            }
+            for(creature in wasHit) {
+                for(step in skill.statusSteps) {
+                    step(creature)
+                }
+            }
+        }
+    }
+
+    private fun getTargetList(target : Target, active : Int, selected : Int) : List<Int> {
+        return when(target) {
+            Target.Self -> listOf(active)
+            Target.Selected -> listOf(selected)
+            Target.Others -> creatures.indices.filter { it != active }
+            Target.Opponents -> creatures.indices.filter { creatures[it].second != creatures[active].second }
+            Target.All -> creatures.indices.toList()
+        }
     }
 }

core/src/me/msoucy/ptures/model/Skills.kt

@@ -23,13 +23,16 @@ enum class Attribute {
 class Damage(val power : Int) {
     var target = Target.Selected
     var accuracy = 100
+
+    infix fun hits (target : Creature) {
+
+    }
 }
 
 @SkillMarker
 class Skill(val name : String, val attribute : Attribute) {
-    val preSteps = mutableListOf<Pair<Status, Target>>()
     val damageSteps = mutableListOf<Damage>()
-    val postSteps = mutableListOf<Pair<Status, Target>>()
+    val statusSteps = mutableListOf<(Creature) -> Unit>()
 
     fun damage(power : Int, block : Damage.() -> Unit = {}) {
         val d = Damage(power)
@@ -38,7 +41,11 @@ class Skill(val name : String, val attribute : Attribute) {
     }
 
     fun addStatus(status : Status, target : Target = Target.Selected) {
-        postSteps.add(Pair(status, target))
+        statusSteps.add { c -> c.addStatus(status) }
+    }
+
+    fun removeStatus(status : Status, target : Target = Target.Selected) {
+        statusSteps.add { c -> c.removeStatus(status) }
     }
 }
 
@@ -48,6 +55,9 @@ fun skill(name : String, attribute : Attribute = Attribute.Neutral, block : Skil
     return ret
 }
 
+val Ignore = skill("Ignore") {
+}
+
 val Tackle = skill("Tackle") {
     damage(20)
 }

core/src/me/msoucy/ptures/model/Status.kt

@@ -2,12 +2,16 @@ package me.msoucy.ptures.model
 
 sealed class Status {
 
+    open fun onTurnStart(engine : Engine) {
+        // Do nothing
+    }
+
     open fun onAdd(creature : Creature) {
         // Do nothing
     }
 
     open fun onTurnEnd(engine : Engine) {
-        // Do nothing by default
+        // Do nothing
     }
 }