1 files changed, 93 insertions, 0 deletions
diff --git a/resources/js/formula.js b/resources/js/formula.js
new file mode 100644
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+++ b/resources/js/formula.js
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+/**
+ * @param {Technique} technique
+ * @param {Monster} user
+ * @param {Monster} target
+ *
+ * @returns {number}
+ */
+function simpleDamageCalculation (technique, user, target) {
+  if (technique.power === 0) {
+    return 0;
+  }
+
+  let userBaseStrength = user.level + 7;
+  let userStrength = 1;
+  let targetResist = 1;
+
+  if (technique.range === TechniqueRange.melee) {
+    userStrength = userBaseStrength * user.stats.melee;
+    targetResist = target.stats.armour;
+  }
+  else if (technique.range === TechniqueRange.touch) {
+    userStrength = userBaseStrength * user.stats.melee;
+    targetResist = target.stats.dodge;
+  }
+  else if (technique.range === TechniqueRange.ranged) {
+    userStrength = userBaseStrength * user.stats.ranged;
+    targetResist = target.stats.dodge;
+  }
+  else if (technique.range === TechniqueRange.reach) {
+    userStrength = userBaseStrength * user.stats.ranged;
+    targetResist = target.stats.armour;
+  }
+  else if (technique.range === TechniqueRange.reliable) {
+    userStrength = userBaseStrength;
+    targetResist = 1;
+  }
+
+  const multiplier = simpleDamageMultiplier(technique.types, target.types);
+  const moveStrength = technique.power * multiplier;
+  const damage = Math.floor((userStrength * moveStrength) / targetResist);
+
+  return Math.max(damage, 1);
+}
+
+/**
+ * @param {(ElementType[]|string[])} techniqueTypes
+ * @param {(ElementType[]|string[])} targetTypes
+ *
+ * @returns {number}
+ */
+function simpleDamageMultiplier (techniqueTypes, targetTypes) {
+  let multiplier = 1;
+
+  for (const techniqueType of techniqueTypes) {
+    if (techniqueType === ElementType.aether) {
+      continue;
+    }
+
+    for (const targetType of targetTypes) {
+      if (targetType === ElementType.aether) {
+        continue;
+      }
+
+      multiplier *= DB.elements[techniqueType].types.find((type) => type.against === targetType).multiplier;
+    }
+  }
+
+  return Math.max(0.25, Math.min(multiplier, 4));
+}
+
+/**
+ * @param {Monster} opposingMonster
+ * @param {Monster[]} participants
+ *
+ * @returns {number[]}
+ */
+function calculateAwardedExperience (opposingMonster, participants) {
+  const awardedExperienceDistribution = [];
+
+  for (const participantIndex in participants) {
+    const participant = participants[participantIndex];
+    const awardedExperience = Math.max(
+      Math.floor(
+        opposingMonster.getExperienceRequired(-1) / opposingMonster.level * opposingMonster.experienceModifier / participant.level
+      ),
+      1
+    );
+
+    awardedExperienceDistribution[participantIndex] = awardedExperience;
+  }
+
+  return awardedExperienceDistribution;
+}