up3

server/entity/effect/resistance.go

@@ -0,0 +1,30 @@
+package effect
+
+import (
+	"github.com/df-mc/dragonfly/server/world"
+	"image/color"
+)
+
+// Resistance is a lasting effect that reduces the damage taken from any
+// sources except for void damage or custom damage.
+var Resistance resistance
+
+type resistance struct {
+	nopLasting
+}
+
+// Multiplier returns a damage multiplier for the damage source passed.
+func (resistance) Multiplier(e world.DamageSource, lvl int) float64 {
+	if !e.ReducedByResistance() {
+		return 1
+	}
+	if v := 1 - 0.2*float64(lvl); v >= 0 {
+		return v
+	}
+	return 0
+}
+
+// RGBA ...
+func (resistance) RGBA() color.RGBA {
+	return color.RGBA{R: 0x91, G: 0x46, B: 0xf0, A: 0xff}
+}