commit b3f3a77fc755e7b31afe47d218e027abb537f554
Author: ChaoticByte <contact@chaoticbyte.net>
Date:   Thu Aug 21 18:16:10 2025 +0200

    Initial commit

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..44936f4
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,14 @@
+module github.com/ChaoticByte/xels
+
+go 1.24.5
+
+require github.com/hajimehoshi/ebiten/v2 v2.8.8
+
+require (
+	github.com/ebitengine/gomobile v0.0.0-20240911145611-4856209ac325 // indirect
+	github.com/ebitengine/hideconsole v1.0.0 // indirect
+	github.com/ebitengine/purego v0.8.0 // indirect
+	github.com/jezek/xgb v1.1.1 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/sys v0.25.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..df10e34
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,16 @@
+github.com/ebitengine/gomobile v0.0.0-20240911145611-4856209ac325 h1:Gk1XUEttOk0/hb6Tq3WkmutWa0ZLhNn/6fc6XZpM7tM=
+github.com/ebitengine/gomobile v0.0.0-20240911145611-4856209ac325/go.mod h1:ulhSQcbPioQrallSuIzF8l1NKQoD7xmMZc5NxzibUMY=
+github.com/ebitengine/hideconsole v1.0.0 h1:5J4U0kXF+pv/DhiXt5/lTz0eO5ogJ1iXb8Yj1yReDqE=
+github.com/ebitengine/hideconsole v1.0.0/go.mod h1:hTTBTvVYWKBuxPr7peweneWdkUwEuHuB3C1R/ielR1A=
+github.com/ebitengine/purego v0.8.0 h1:JbqvnEzRvPpxhCJzJJ2y0RbiZ8nyjccVUrSM3q+GvvE=
+github.com/ebitengine/purego v0.8.0/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
+github.com/hajimehoshi/ebiten/v2 v2.8.8 h1:xyMxOAn52T1tQ+j3vdieZ7auDBOXmvjUprSrxaIbsi8=
+github.com/hajimehoshi/ebiten/v2 v2.8.8/go.mod h1:durJ05+OYnio9b8q0sEtOgaNeBEQG7Yr7lRviAciYbs=
+github.com/jezek/xgb v1.1.1 h1:bE/r8ZZtSv7l9gk6nU0mYx51aXrvnyb44892TwSaqS4=
+github.com/jezek/xgb v1.1.1/go.mod h1:nrhwO0FX/enq75I7Y7G8iN1ubpSGZEiA3v9e9GyRFlk=
+golang.org/x/image v0.20.0 h1:7cVCUjQwfL18gyBJOmYvptfSHS8Fb3YUDtfLIZ7Nbpw=
+golang.org/x/image v0.20.0/go.mod h1:0a88To4CYVBAHp5FXJm8o7QbUl37Vd85ply1vyD8auM=
+golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
+golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..96a2bf1
--- /dev/null
+++ b/main.go
@@ -0,0 +1,57 @@
+package main
+
+import (
+	"github.com/hajimehoshi/ebiten/v2"
+
+	"github.com/ChaoticByte/xels/simulation"
+)
+
+
+type Application struct {
+	simulation simulation.Simulation
+}
+
+func (a *Application) Update() error {
+	a.simulation.Update()
+	return nil
+}
+
+func (a *Application) Draw(screen *ebiten.Image) {
+	// create image from xel grid
+	pixels := make([]byte, 4 * screen.Bounds().Dx() * screen.Bounds().Dy())
+	for i := range len(a.simulation.Grid.Xels) {
+		xel := a.simulation.Grid.Xels[i]
+		var v byte = 0
+		if xel.Energy > 0 {
+			v = byte(max(0, min(255, xel.Energy * 2 + 38)))
+		}
+		// r
+		pixels[i * 4]     = v
+		// g
+		pixels[(i*4) + 1] = v
+		// b
+		pixels[(i*4) + 2] = v
+		// a
+		pixels[(i*4) + 3] = 255
+	}
+	screen.WritePixels(pixels)
+}
+
+func (a *Application) Layout(outsideWidth int, outsideHeight int) (int, int) {
+	return CanvasWidth, CanvasHeight
+}
+
+
+func main() {
+	ebiten.SetWindowSize(CanvasWidth, CanvasHeight)
+	ebiten.SetWindowTitle("Pixels - Main Window")
+	ebiten.SetWindowResizingMode(ebiten.WindowResizingModeEnabled)
+	ebiten.MaximizeWindow()
+	ebiten.SetTPS(MaxTps)
+	app := &Application{
+		simulation: *simulation.NewSimulation(CanvasWidth, CanvasHeight),
+	}
+	InitGrid(app.simulation.Grid)
+	err := ebiten.RunGame(app)
+	if err != nil { panic(err) }
+}
diff --git a/settings.go b/settings.go
new file mode 100644
index 0000000..96664a9
--- /dev/null
+++ b/settings.go
@@ -0,0 +1,12 @@
+package main
+
+import "github.com/ChaoticByte/xels/simulation"
+
+const CanvasWidth = 200
+const CanvasHeight = 200
+const MaxTps = 1000
+const SimStepsPerUpdate = 10
+
+func InitGrid(grid *simulation.XelGrid) {
+	grid.GetXel(grid.GetCenterPosition()).Energy = 50000
+}
diff --git a/simulation/simulation.go b/simulation/simulation.go
new file mode 100644
index 0000000..51630c0
--- /dev/null
+++ b/simulation/simulation.go
@@ -0,0 +1,32 @@
+package simulation
+
+import (
+	"math/rand/v2"
+)
+
+type Simulation struct {
+	Grid *XelGrid
+}
+
+func (sim *Simulation) Update() {
+	for range 10 {
+		// get all available xels with energy != 0
+		available_positions := []Vector2{}
+		for i, xel := range sim.Grid.Xels {
+			if xel.Energy != 0 {
+				available_positions = append(available_positions, Vector2{X: i % sim.Grid.Width, Y: i/sim.Grid.Height})
+			}
+		}
+		// choose random pos
+		pos := available_positions[rand.IntN(len(available_positions))]
+		xel := sim.Grid.GetXel(pos)
+		if xel.Energy == 0 { panic("xel energy null") }
+		xel.Step(pos, sim.Grid)
+	}
+}
+
+func NewSimulation(width int, height int) *Simulation {
+	return &Simulation{
+		Grid: NewXelGrid(width, height),
+	}
+}
diff --git a/simulation/vec2.go b/simulation/vec2.go
new file mode 100644
index 0000000..d9212e9
--- /dev/null
+++ b/simulation/vec2.go
@@ -0,0 +1,6 @@
+package simulation
+
+type Vector2 struct {
+	X int
+	Y int
+}
diff --git a/simulation/xel.go b/simulation/xel.go
new file mode 100644
index 0000000..59c5aec
--- /dev/null
+++ b/simulation/xel.go
@@ -0,0 +1,69 @@
+package simulation
+
+import (
+	"math/rand/v2"
+)
+
+const (
+	TurnNorth int = iota
+	TurnEast
+	TurnSouth
+	TurnWest
+)
+
+type Xel struct {
+	Energy int64
+}
+
+func (xel *Xel) Step(ownPos Vector2, grid *XelGrid) {
+	// get other xel
+	var otherXelPos Vector2
+	switch rand.IntN(4) {
+	case 0:
+		otherXelPos = Vector2{X: ownPos.X + 1, Y: ownPos.Y}
+	case 1:
+		otherXelPos = Vector2{X: ownPos.X - 1, Y: ownPos.Y}
+	case 2:
+		otherXelPos = Vector2{X: ownPos.X, Y: ownPos.Y + 1}
+	case 3:
+		otherXelPos = Vector2{X: ownPos.X, Y: ownPos.Y - 1}
+	}
+	otherXel := grid.GetXel(otherXelPos)
+	if otherXel == nil { return }
+	// interact
+	if (xel.Energy > 0 && otherXel.Energy > 0) || (xel.Energy < 0 && otherXel.Energy < 0) {
+		if rand.IntN(4) == 0 {
+			// create a higher energy xel and an inverted xel
+			xel.Energy += (2 * otherXel.Energy)
+			otherXel.Energy *= -1
+		} else {
+			xel.Energy += otherXel.Energy
+			otherXel.Energy = 0
+		}
+		return
+	}
+	if (xel.Energy < 0 && otherXel.Energy > 0) || (xel.Energy > 0 && otherXel.Energy < 0) {
+		// cancel out
+		xel.Energy += otherXel.Energy
+		otherXel.Energy = 0
+		return
+	}
+	if (xel.Energy == 0 && otherXel.Energy != 0) || (xel.Energy != 0 && otherXel.Energy == 0) {
+		if xel.Energy > 1 || xel.Energy < -1 || otherXel.Energy > 1 || otherXel.Energy < -1 { // prevent integer 1 / 0
+			// split
+			splitE := (xel.Energy + otherXel.Energy) / 2
+			xel.Energy = splitE + ((xel.Energy + otherXel.Energy) % 2)
+			otherXel.Energy = splitE
+		} else {
+			// move
+			if xel.Energy != 0 {
+				otherXel.Energy = xel.Energy
+				xel.Energy = 0
+			} else {
+				xel.Energy = otherXel.Energy
+				otherXel.Energy = 0
+			}
+		}
+		return
+	}
+}
diff --git a/simulation/xelgrid.go b/simulation/xelgrid.go
new file mode 100644
index 0000000..486d329
--- /dev/null
+++ b/simulation/xelgrid.go
@@ -0,0 +1,36 @@
+package simulation
+
+type XelGrid struct {
+	Width int  // do not overwrite this value after init!
+	Height int // do not overwrite this value after init!
+	Xels []*Xel
+}
+
+func (grid *XelGrid) GetCenterPosition() Vector2 { // just a helper
+	return Vector2{
+		X: (grid.Width / 2) + (grid.Width % 2),
+		Y: (grid.Height / 2) + (grid.Height % 2),
+	}
+}
+
+func (grid *XelGrid) GetXel(pos Vector2) *Xel {
+	if pos.X < 0 || pos.X >= grid.Width || pos.Y < 0 || pos.Y >= grid.Height {
+		return nil // out of bounds
+	}
+	i := (pos.Y * grid.Width) + pos.X
+	return grid.Xels[i]
+}
+
+func NewXelGrid(width int, height int) *XelGrid {
+	grid := &XelGrid{
+		Width: width,
+		Height: height,
+		Xels: make([]*Xel, width*height),
+	}
+	// init
+	for i := range len(grid.Xels) {
+		grid.Xels[i] = &Xel{}
+	}
+	//
+	return grid
+}