up3

server/entity/effect/instant_damage.go

@@ -0,0 +1,35 @@
+package effect
+
+import (
+	"github.com/df-mc/dragonfly/server/world"
+	"image/color"
+)
+
+// InstantDamage is an instant effect that causes a living entity to
+// immediately take some damage, depending on the level and the potency of the
+// effect.
+var InstantDamage instantDamage
+
+type instantDamage struct{}
+
+// Apply ...
+func (i instantDamage) Apply(e world.Entity, eff Effect) {
+	base := 3 << eff.Level()
+	if l, ok := e.(living); ok {
+		l.Hurt(float64(base)*eff.potency, InstantDamageSource{})
+	}
+}
+
+// RGBA ...
+func (instantDamage) RGBA() color.RGBA {
+	return color.RGBA{R: 0xa9, G: 0x65, B: 0x6a, A: 0xff}
+}
+
+// InstantDamageSource is used for damage caused by an effect.instantDamage
+// applied to an entity.
+type InstantDamageSource struct{}
+
+func (InstantDamageSource) ReducedByArmour() bool     { return false }
+func (InstantDamageSource) ReducedByResistance() bool { return true }
+func (InstantDamageSource) Fire() bool                { return false }
+func (InstantDamageSource) IgnoreTotem() bool         { return false }