Implement Destiny's Threads Forewoven (LC)

internal/lightcone/preservation/destinysthreadsforewoven/destinysthreadsforewoven.go

@@ -0,0 +1,80 @@
+package destinysthreadsforewoven
+
+import (
+	"math"
+
+	"github.com/simimpact/srsim/pkg/engine"
+	"github.com/simimpact/srsim/pkg/engine/equip/lightcone"
+	"github.com/simimpact/srsim/pkg/engine/info"
+	"github.com/simimpact/srsim/pkg/engine/modifier"
+	"github.com/simimpact/srsim/pkg/engine/prop"
+	"github.com/simimpact/srsim/pkg/key"
+	"github.com/simimpact/srsim/pkg/model"
+)
+
+const (
+	check = "destinys-threads-forewoven"
+	buff  = "destinys-threads-forewoven-dmg-buff"
+)
+
+type state struct {
+	dmgPer float64
+	dmgMax float64
+}
+
+// Increases the wearer's Effect RES by 12%.
+// For every 100 of DEF the wearer has, increases the wearer's DMG dealt by 0.8%,
+// up to a maximum DMG increase of 32%.
+
+func init() {
+	lightcone.Register(key.DestinysThreadsForewoven, lightcone.Config{
+		CreatePassive: Create,
+		Rarity:        4,
+		Path:          model.Path_PRESERVATION,
+		Promotions:    promotions,
+	})
+
+	modifier.Register(check, modifier.Config{
+		Listeners: modifier.Listeners{
+			OnAdd:            onCheck,
+			OnPropertyChange: onCheck,
+		},
+	})
+
+	modifier.Register(buff, modifier.Config{
+		StatusType: model.StatusType_STATUS_BUFF,
+		Stacking:   modifier.ReplaceBySource,
+		CanDispel:  true,
+	})
+}
+
+func Create(engine engine.Engine, owner key.TargetID, lc info.LightCone) {
+	effres := 0.1 + 0.02*float64(lc.Imposition)
+	dmgPer := 0.007 + 0.001*float64(lc.Imposition)
+	dmgMax := 0.28 + 0.04*float64(lc.Imposition)
+
+	engine.AddModifier(owner, info.Modifier{
+		Name:   check,
+		Source: owner,
+		Stats:  info.PropMap{prop.EffectRES: effres},
+		State: state{
+			dmgPer: dmgPer,
+			dmgMax: dmgMax,
+		},
+	})
+}
+
+func onCheck(mod *modifier.Instance) {
+	state := mod.State().(state)
+	def := mod.OwnerStats().DEF()
+	dmg := math.Floor(def/100) * state.dmgPer
+	if dmg > state.dmgMax {
+		dmg = state.dmgMax
+	}
+
+	mod.Engine().AddModifier(mod.Owner(), info.Modifier{
+		Name:   buff,
+		Source: mod.Owner(),
+		Stats:  info.PropMap{prop.AllDamagePercent: dmg},
+	})
+}

pkg/key/lightcone.go

@@ -89,6 +89,7 @@ const (
 	Pioneering                LightCone = "pioneering"
 	WeAreWildfire             LightCone = "we_are_wildfire"
 	LandausChoice             LightCone = "landaus_choice"
+	DestinysThreadsForewoven  LightCone = "destinys_threads_forewoven"
 )
 
 // Abundance

pkg/simulation/imports.go

@@ -101,6 +101,7 @@ import (
 	_ "github.com/simimpact/srsim/internal/lightcone/preservation/amber"
 	_ "github.com/simimpact/srsim/internal/lightcone/preservation/dayoneofmynewlife"
 	_ "github.com/simimpact/srsim/internal/lightcone/preservation/defense"
+	_ "github.com/simimpact/srsim/internal/lightcone/preservation/destinysthreadsforewoven"
 	_ "github.com/simimpact/srsim/internal/lightcone/preservation/landauschoice"
 	_ "github.com/simimpact/srsim/internal/lightcone/preservation/momentofvictory"
 	_ "github.com/simimpact/srsim/internal/lightcone/preservation/pioneering"