From f47273c2edea52506ae5d69f376244d4da52fc8c Mon Sep 17 00:00:00 2001
From: Nick Dumas <drakonik@gmail.com>
Date: Tue, 20 Jan 2026 17:09:36 -0500
Subject: [PATCH] blarp

---
 cmd/cli/guest/main.go | 34 +++-------------------------------
 components.go         | 17 +++++++++++++++--
 go.mod                |  7 ++++++-
 go.sum                | 15 +++++++++++++++
 systems.go            | 34 ++++++++++++++++++++++++++++++++++
 5 files changed, 73 insertions(+), 34 deletions(-)
 create mode 100644 systems.go

diff --git a/cmd/cli/guest/main.go b/cmd/cli/guest/main.go
index fe3c42c..ff4432b 100644
--- a/cmd/cli/guest/main.go
+++ b/cmd/cli/guest/main.go
@@ -3,41 +3,13 @@ package main
 import (
 	"fmt"
 
-	"github.com/mlange-42/ark/ecs"
+	"github.com/EngoEngine/ecs"
 
 	"code.ndumas.com/ndumas/muddy"
 )
 
 func main() {
-	world := ecs.NewWorld()
+	world := ecs.World{}
 
-	locationMapper := ecs.NewMap3[muddy.ID, muddy.Location, muddy.Observable](world)
-
-	z := 0
-	for i := range 10 {
-		for j := range 10 {
-			_ = locationMapper.NewEntity(
-				&muddy.ID{ID: int64(z)},
-				&muddy.Location{
-					World: 0,
-					Exits: make([]int64, 0),
-				},
-				&muddy.Observable{
-					Name: fmt.Sprintf("Room (%d,%d)", i, j),
-				},
-			)
-			z++
-		}
-	}
-
-	locationFilter := ecs.NewFilter3[muddy.ID, muddy.Location, muddy.Observable](world)
-
-	query := locationFilter.Query()
-	for query.Next() {
-		id, loc, obsv := query.Get()
-		fmt.Println("====")
-		fmt.Printf("%#v\n", id)
-		fmt.Printf("%#v\n", loc)
-		fmt.Printf("%#v\n", obsv)
-	}
+	world.Update(1)
 }
diff --git a/components.go b/components.go
index 0af35dc..9c77b83 100644
--- a/components.go
+++ b/components.go
@@ -5,11 +5,24 @@ type ID struct {
 }
 
 type Location struct {
-	World int64
-	Exits []int64
+	X, Y, Z int64
+	World   int64
+	Exits   []int64
 }
 
 type Observable struct {
 	Name        string
 	Description string
 }
+
+type Inventory struct {
+	Items []int64
+}
+
+type HP struct {
+	Max, Current, Regen int64
+}
+
+type Mana struct {
+	Max, Current, Regen int64
+}
diff --git a/go.mod b/go.mod
index 9324db1..5cb0391 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,9 @@ module code.ndumas.com/ndumas/muddy
 
 go 1.24.5
 
-require github.com/mlange-42/ark v0.7.0
+require (
+	github.com/EngoEngine/ecs v1.0.5
+	github.com/mlange-42/ark v0.7.0
+)
+
+require github.com/stretchr/testify v1.10.0 // indirect
diff --git a/go.sum b/go.sum
index 914e546..9608f85 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,17 @@
+github.com/EngoEngine/ecs v1.0.5 h1:S21KTClrAqC862BFR5wTkd6uEYQ0Aw/ob9RjKPt0e30=
+github.com/EngoEngine/ecs v1.0.5/go.mod h1:A8AYbzKIsl+t4qafmLL3t4H6cXdfGo4CIHl7EN100iM=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/mlange-42/ark v0.7.0 h1:cLEqhJhZaZayi35eY/cE7VQg7GonK+s1qbsSKdtcjrs=
 github.com/mlange-42/ark v0.7.0/go.mod h1:gkS9cuklENPTmSjL2z4DcJgJsIVqF1yNwFlx48Hz/Sw=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/systems.go b/systems.go
new file mode 100644
index 0000000..7bbf128
--- /dev/null
+++ b/systems.go
@@ -0,0 +1,34 @@
+package muddy
+
+import (
+	"fmt"
+
+	"github.com/EngoEngine/ecs"
+)
+
+type Room struct {
+	ID
+	Location
+	Observable
+	Inventory
+}
+
+type RoomRepository interface {
+	Get(int64) (Room, error)
+	GetAll() ([]Room, error)
+	Delete(int64) error
+}
+
+type RoomSystem struct {
+	repository RoomRepository
+}
+
+func (s *RoomSystem) Initialize(w *ecs.World) {
+	fmt.Println("initializing room system")
+	// locationMapper := ecs.NewMap4[ID, Location, Observable, Inventory](w)
+}
+
+func (s *RoomSystem) Update(w *ecs.World) {}
+
+// Finalize the system.
+func (s *RoomSystem) Finalize(w *ecs.World) {}