first commit

1 files changed, 52 insertions, 0 deletions

diff --git a/internal/combat/formulas.go b/internal/combat/formulas.go
new file mode 100644
index 0000000..0b3248b
--- /dev/null
+++ b/internal/combat/formulas.go
@@ -0,0 +1,52 @@
+package combat
+
+import "math/rand"
+
+func AttackRoll(attackLevel int, styleBonus int, equipBonus int) int {
+	return (attackLevel + styleBonus + 8) * (equipBonus + 64)
+}
+
+func DefenseRoll(defenseLevel int, styleBonus int, equipBonus int) int {
+	return (defenseLevel + styleBonus + 8) * (equipBonus + 64)
+}
+
+func HitCheck(attackRoll, defenseRoll int) bool {
+	if attackRoll > defenseRoll {
+		return true
+	}
+	if attackRoll < defenseRoll {
+		return false
+	}
+	return rand.Intn(2) == 1
+}
+
+func MaxHit(strengthLevel int, styleBonus int, equipBonus int) int {
+	effective := (strengthLevel + styleBonus + 8) * (equipBonus + 64)
+	hit := effective / 512
+	if hit < 1 {
+		hit = 1
+	}
+	return hit
+}
+
+func RollDamage(maxHit int) int {
+	if maxHit <= 0 {
+		return 0
+	}
+	return 1 + rand.Intn(maxHit)
+}
+
+func AttackStyleBonus(style string) (attack, strength, defense int) {
+	switch style {
+	case "accurate":
+		return 3, 0, 0
+	case "aggressive":
+		return 0, 3, 0
+	case "defensive":
+		return 0, 0, 3
+	case "balanced":
+		return 1, 1, 1
+	default:
+		return 0, 0, 0
+	}
+}