up3

server/entity/damage.go

@@ -0,0 +1,95 @@
+package entity
+
+import (
+	"github.com/df-mc/dragonfly/server/item"
+	"github.com/df-mc/dragonfly/server/item/enchantment"
+	"github.com/df-mc/dragonfly/server/world"
+)
+
+type (
+	// AttackDamageSource is used for damage caused by other entities, for
+	// example when a player attacks another player.
+	AttackDamageSource struct {
+		// Attacker holds the attacking entity. The entity may be a player or
+		// any other entity.
+		Attacker world.Entity
+	}
+
+	// VoidDamageSource is used for damage caused by an entity being in the
+	// void.
+	VoidDamageSource struct{}
+
+	// SuffocationDamageSource is used for damage caused by an entity
+	// suffocating in a block.
+	SuffocationDamageSource struct{}
+
+	// DrowningDamageSource is used for damage caused by an entity drowning in
+	// water.
+	DrowningDamageSource struct{}
+
+	// FallDamageSource is used for damage caused by falling.
+	FallDamageSource struct{}
+
+	// GlideDamageSource is used for damage caused by gliding into a block.
+	GlideDamageSource struct{}
+
+	// LightningDamageSource is used for damage caused by being struck by
+	// lightning.
+	LightningDamageSource struct{}
+
+	// ProjectileDamageSource is used for damage caused by a projectile.
+	ProjectileDamageSource struct {
+		// Projectile and Owner are the world.Entity that dealt the damage and
+		// the one that fired the projectile respectively.
+		Projectile, Owner world.Entity
+	}
+
+	// ExplosionDamageSource is used for damage caused by an explosion.
+	ExplosionDamageSource struct{}
+)
+
+func (FallDamageSource) ReducedByArmour() bool     { return false }
+func (FallDamageSource) ReducedByResistance() bool { return true }
+func (FallDamageSource) Fire() bool                { return false }
+func (FallDamageSource) AffectedByEnchantment(e item.EnchantmentType) bool {
+	return e == enchantment.FeatherFalling
+}
+func (FallDamageSource) IgnoreTotem() bool                { return false }
+func (GlideDamageSource) ReducedByArmour() bool           { return false }
+func (GlideDamageSource) ReducedByResistance() bool       { return true }
+func (GlideDamageSource) Fire() bool                      { return false }
+func (GlideDamageSource) IgnoreTotem() bool               { return false }
+func (LightningDamageSource) ReducedByArmour() bool       { return true }
+func (LightningDamageSource) ReducedByResistance() bool   { return true }
+func (LightningDamageSource) Fire() bool                  { return false }
+func (LightningDamageSource) IgnoreTotem() bool           { return false }
+func (AttackDamageSource) ReducedByArmour() bool          { return true }
+func (AttackDamageSource) ReducedByResistance() bool      { return true }
+func (AttackDamageSource) Fire() bool                     { return false }
+func (AttackDamageSource) IgnoreTotem() bool              { return false }
+func (VoidDamageSource) ReducedByResistance() bool        { return false }
+func (VoidDamageSource) ReducedByArmour() bool            { return false }
+func (VoidDamageSource) Fire() bool                       { return false }
+func (VoidDamageSource) IgnoreTotem() bool                { return true }
+func (SuffocationDamageSource) ReducedByResistance() bool { return false }
+func (SuffocationDamageSource) ReducedByArmour() bool     { return false }
+func (SuffocationDamageSource) Fire() bool                { return false }
+func (SuffocationDamageSource) IgnoreTotem() bool         { return false }
+func (DrowningDamageSource) ReducedByResistance() bool    { return false }
+func (DrowningDamageSource) ReducedByArmour() bool        { return false }
+func (DrowningDamageSource) Fire() bool                   { return false }
+func (DrowningDamageSource) IgnoreTotem() bool            { return false }
+func (ProjectileDamageSource) ReducedByResistance() bool  { return true }
+func (ProjectileDamageSource) ReducedByArmour() bool      { return true }
+func (ProjectileDamageSource) Fire() bool                 { return false }
+func (ProjectileDamageSource) AffectedByEnchantment(e item.EnchantmentType) bool {
+	return e == enchantment.ProjectileProtection
+}
+func (ProjectileDamageSource) IgnoreTotem() bool        { return false }
+func (ExplosionDamageSource) ReducedByResistance() bool { return true }
+func (ExplosionDamageSource) ReducedByArmour() bool     { return true }
+func (ExplosionDamageSource) Fire() bool                { return false }
+func (ExplosionDamageSource) AffectedByEnchantment(e item.EnchantmentType) bool {
+	return e == enchantment.BlastProtection
+}
+func (ExplosionDamageSource) IgnoreTotem() bool { return false }