basic road generation added

2026-02-04 14:19:18 -06:00
parent 05887fde26
commit b9173dd1f3
3 changed files with 478 additions and 46 deletions
@@ -51,6 +51,7 @@ func main() {
 	var lakes [][]image.Point
 	var riverPixels []image.Point
 	var treePixels []image.Point
+	var roadPixels []image.Point

 	configDir, err := os.UserConfigDir()
 	if err != nil {
@@ -107,25 +108,63 @@ func main() {
 	}

 	if canvasImg.Image == nil || heightmapImg.Image == nil {
+
 		// Initial image generation
+
 		noiseImg := GenerateHeightmap(settings.Width, settings.Height, int(settings.Detail), 100.0, settings.Seed)
+
 		var lakeImage image.Image
+
 		lakeImage, lakes = GenerateLakes(settings.Width, settings.Height, settings.Lakes, settings.LakeSizeLower, settings.LakeSizeUpper, noiseImg, settings.Seed)
+
 		var riverImage image.Image
+
 		riverImage, riverPixels = GenerateRivers(settings.Width, settings.Height, settings.Rivers, settings.MinRiverWidth, settings.MaxRiverWidth, settings.RiverCurvyness, lakeImage, lakes, settings.Seed, noiseImg)
+
 		finalImage := riverImage.(*image.RGBA)

-		var flatLakePixels []image.Point
-		for _, lake := range lakes {
-			flatLakePixels = append(flatLakePixels, lake...)
+		var roadImage *image.RGBA
+
+		roadPixels, roadImage = GenerateRoads(settings.Width, settings.Height, settings, noiseImg)
+
+		// Draw roadImage over finalImage
+
+		for y := 0; y < roadImage.Bounds().Max.Y; y++ {
+
+			for x := 0; x < roadImage.Bounds().Max.X; x++ {
+
+				r, g, b, a := roadImage.At(x, y).RGBA()
+
+				if a > 0 {
+
+					finalImage.Set(x, y, color.RGBA{R: uint8(r >> 8), G: uint8(g >> 8), B: uint8(b >> 8), A: uint8(a >> 8)})
+
+				}
+
+			}
+
 		}
+
+		var flatLakePixels []image.Point
+
+		for _, lake := range lakes {
+
+			flatLakePixels = append(flatLakePixels, lake...)
+
+		}
+
 		allWaterPixels := append(flatLakePixels, riverPixels...)

 		treePixels = GenerateTrees(finalImage, allWaterPixels, settings.MinTreeSize, settings.MaxTreeSize, settings.TreeCoverage, settings.TreeClumpiness, settings.Seed)
+
 		darkenedHeightmap := DarkenLakeAreas(noiseImg, allWaterPixels)
+
 		compositeImg := ApplyRoughness(darkenedHeightmap, settings.Roughness)
+
 		heightmapImg.Image = compositeImg
+
 		canvasImg.Image = finalImage
+
 	}

 	detailLabel := widget.NewLabel(fmt.Sprintf("Detail: %.0f", settings.Detail))
@@ -259,6 +298,67 @@ func main() {
 	}
 	treeClumpinessSlider.SetValue(settings.TreeClumpiness)

+	numRoadsLabel := widget.NewLabel(fmt.Sprintf("Number of Roads: %d", settings.NumRoads))
+	numRoadsSlider := widget.NewSlider(1, 1000)
+	numRoadsSlider.OnChanged = func(val float64) {
+		settings.NumRoads = int(val)
+		numRoadsLabel.SetText(fmt.Sprintf("Number of Roads: %d", settings.NumRoads))
+	}
+	numRoadsSlider.SetValue(float64(settings.NumRoads))
+
+	minRoadWidthLabel := widget.NewLabel(fmt.Sprintf("Min Road Width: %.0fpx", settings.MinRoadWidth))
+	minRoadWidthSlider := widget.NewSlider(1, 150)
+	maxRoadWidthLabel := widget.NewLabel(fmt.Sprintf("Max Road Width: %.0fpx", settings.MaxRoadWidth))
+	maxRoadWidthSlider := widget.NewSlider(1, 150)
+
+	minRoadWidthSlider.OnChanged = func(val float64) {
+		settings.MinRoadWidth = val
+		if settings.MinRoadWidth > settings.MaxRoadWidth {
+			settings.MaxRoadWidth = settings.MinRoadWidth
+			maxRoadWidthSlider.SetValue(settings.MaxRoadWidth)
+		}
+		minRoadWidthLabel.SetText(fmt.Sprintf("Min Road Width: %.0fpx", settings.MinRoadWidth))
+	}
+	minRoadWidthSlider.SetValue(settings.MinRoadWidth)
+
+	maxRoadWidthSlider.OnChanged = func(val float64) {
+		settings.MaxRoadWidth = val
+		if settings.MaxRoadWidth < settings.MinRoadWidth {
+			settings.MinRoadWidth = settings.MaxRoadWidth
+			minRoadWidthSlider.SetValue(settings.MinRoadWidth)
+		}
+		maxRoadWidthLabel.SetText(fmt.Sprintf("Max Road Width: %.0fpx", settings.MaxRoadWidth))
+	}
+	maxRoadWidthSlider.SetValue(settings.MaxRoadWidth)
+
+	roadExitsLabel := widget.NewLabel(fmt.Sprintf("Road Exits: %d", settings.RoadExits))
+	roadExitsSlider := widget.NewSlider(1, 100)
+	roadExitsSlider.OnChanged = func(val float64) {
+		if val > float64(settings.NumRoads) {
+			val = float64(settings.NumRoads)
+			roadExitsSlider.SetValue(val)
+		}
+		settings.RoadExits = int(val)
+		roadExitsLabel.SetText(fmt.Sprintf("Road Exits: %d", settings.RoadExits))
+	}
+	roadExitsSlider.SetValue(float64(settings.RoadExits))
+
+	roadCurvynessLabel := widget.NewLabel(fmt.Sprintf("Road Curvyness: %.0f%%", settings.RoadCurvyness))
+	roadCurvynessSlider := widget.NewSlider(0, 100)
+	roadCurvynessSlider.OnChanged = func(val float64) {
+		settings.RoadCurvyness = val
+		roadCurvynessLabel.SetText(fmt.Sprintf("Road Curvyness: %.0f%%", settings.RoadCurvyness))
+	}
+	roadCurvynessSlider.SetValue(settings.RoadCurvyness)
+
+	roadDistributionLabel := widget.NewLabel(fmt.Sprintf("Distribution: %.0f%%", settings.RoadDistribution))
+	roadDistributionSlider := widget.NewSlider(0, 100)
+	roadDistributionSlider.OnChanged = func(val float64) {
+		settings.RoadDistribution = val
+		roadDistributionLabel.SetText(fmt.Sprintf("Distribution: %.0f%%", settings.RoadDistribution))
+	}
+	roadDistributionSlider.SetValue(settings.RoadDistribution)
+
 	errorLabel := canvas.NewText("", color.RGBA{R: 255, A: 255})
 	errorLabel.TextSize = 12
 	errorLabel.Hide()
@@ -272,7 +372,7 @@ func main() {
 		showSaveDialog(w, heightmapImg.Image, settings)
 	})
 	exportMasksBtn := widget.NewButton("Export Masks", func() {
-		showMasksSaveDialog(w, canvasImg.Image, heightmapImg.Image, settings, lakes, riverPixels, treePixels)
+		showMasksSaveDialog(w, canvasImg.Image, heightmapImg.Image, settings, lakes, riverPixels, treePixels, roadPixels)
 	})

 	generateBtn = widget.NewButton("Generate", func() {
@@ -286,7 +386,7 @@ func main() {
 				})
 			}()

-			steps := 7
+			steps := 8
 			currentStep := 0

 			// Step 1: Generating Heightmap
@@ -316,13 +416,31 @@ func main() {
 			riverImage, riverPixels = GenerateRivers(settings.Width, settings.Height, settings.Rivers, settings.MinRiverWidth, settings.MaxRiverWidth, settings.RiverCurvyness, lakeImage, lakes, settings.Seed, noiseImg)

 			finalImage := riverImage.(*image.RGBA)
+
+			// Step 4: Generating Roads
+			currentStep++
+			fyne.Do(func() {
+				progressBar.SetText(fmt.Sprintf("Step %d/%d: Generating Roads", currentStep, steps))
+				progressBar.SetValue(float64(currentStep) / float64(steps))
+			})
+			var roadImage *image.RGBA
+			roadPixels, roadImage = GenerateRoads(settings.Width, settings.Height, settings, noiseImg) // Draw roadImage over finalImage
+			for y := 0; y < roadImage.Bounds().Max.Y; y++ {
+				for x := 0; x < roadImage.Bounds().Max.X; x++ {
+					r, g, b, a := roadImage.At(x, y).RGBA()
+					if a > 0 {
+						finalImage.Set(x, y, color.RGBA{R: uint8(r >> 8), G: uint8(g >> 8), B: uint8(b >> 8), A: uint8(a >> 8)})
+					}
+				}
+			}
+
 			var flatLakePixels []image.Point
 			for _, lake := range lakes {
 				flatLakePixels = append(flatLakePixels, lake...)
 			}
 			allWaterPixels := append(flatLakePixels, riverPixels...)

-			// Step 4: Darkening Water Areas
+			// Step 5: Darkening Water Areas
 			currentStep++
 			fyne.Do(func() {
 				progressBar.SetText(fmt.Sprintf("Step %d/%d: Darkening Water Areas", currentStep, steps))
@@ -330,7 +448,7 @@ func main() {
 			})
 			darkenedHeightmap := DarkenLakeAreas(noiseImg, allWaterPixels)

-			// Step 5: Applying Roughness
+			// Step 6: Applying Roughness
 			currentStep++
 			fyne.Do(func() {
 				progressBar.SetText(fmt.Sprintf("Step %d/%d: Applying Roughness", currentStep, steps))
@@ -338,7 +456,7 @@ func main() {
 			})
 			compositeImg := ApplyRoughness(darkenedHeightmap, settings.Roughness)

-			// Step 6: Generating Trees
+			// Step 7: Generating Trees
 			currentStep++
 			fyne.Do(func() {
 				progressBar.SetText(fmt.Sprintf("Step %d/%d: Generating Trees", currentStep, steps))
@@ -346,7 +464,7 @@ func main() {
 			})
 			treePixels = GenerateTrees(finalImage, allWaterPixels, settings.MinTreeSize, settings.MaxTreeSize, settings.TreeCoverage, settings.TreeClumpiness, settings.Seed)

-			// Step 7: Finalizing Images
+			// Step 8: Finalizing Images
 			currentStep++
 			fyne.Do(func() {
 				progressBar.SetText(fmt.Sprintf("Step %d/%d: Finalizing Images", currentStep, steps))
@@ -448,10 +566,26 @@ func main() {
 		riverCurvynessSlider,
 	))

+	roadDistributionSlider.SetValue(settings.RoadDistribution)
+
+	roadsTab := container.NewTabItem("Roads", container.NewVBox(
+		numRoadsLabel,
+		numRoadsSlider,
+		minRoadWidthLabel,
+		minRoadWidthSlider,
+		maxRoadWidthLabel,
+		maxRoadWidthSlider,
+		roadExitsLabel,
+		roadExitsSlider,
+		roadCurvynessLabel,
+		roadCurvynessSlider,
+		roadDistributionLabel,
+		roadDistributionSlider,
+	))
+
 	imageTab := container.NewTabItem("Image", container.NewVBox(
 		widget.NewLabel("Width:"),
-		widthEntry,
-		widget.NewLabel("Height:"),
+		widthEntry, widget.NewLabel("Height:"),
 		heightEntry,
 		widget.NewLabel("Seed:"),
 		seedEntry,
@@ -469,6 +603,7 @@ func main() {
 		imageTab,
 		terrainTab,
 		waterTab,
+		roadsTab,
 	)

 	left := container.NewVBox(
@@ -504,7 +639,7 @@ func getImageData(img image.Image, format string) (*bytes.Buffer, error) {
 	return buf, err
 }

-func showMasksSaveDialog(win fyne.Window, canvasImg, heightmapImg image.Image, settings *Settings, lakes [][]image.Point, riverPixels, treePixels []image.Point) {
+func showMasksSaveDialog(win fyne.Window, canvasImg, heightmapImg image.Image, settings *Settings, lakes [][]image.Point, riverPixels, treePixels, roadPixels []image.Point) {
 	fileNameEntry := widget.NewEntry()
 	fileNameEntry.SetPlaceHolder("masks_folder")

@@ -566,6 +701,10 @@ func showMasksSaveDialog(win fyne.Window, canvasImg, heightmapImg image.Image, s
 		for _, p := range treePixels {
 			treeMask.SetGray(p.X, p.Y, color.Gray{Y: 255})
 		}
+		roadMask := image.NewGray(bounds)
+		for _, p := range roadPixels {
+			roadMask.SetGray(p.X, p.Y, color.Gray{Y: 255})
+		}

 		imagesToSave := map[string]image.Image{
 			"canvas." + imgFormat:      canvasImg,
@@ -573,6 +712,7 @@ func showMasksSaveDialog(win fyne.Window, canvasImg, heightmapImg image.Image, s
 			"lakes_mask." + imgFormat:  lakeMask,
 			"rivers_mask." + imgFormat: riverMask,
 			"trees_mask." + imgFormat:  treeMask,
+			"roads_mask." + imgFormat:  roadMask,
 		}

 		switch packageSelect.Selected {
@@ -0,0 +1,280 @@
+package main
+
+import (
+	"fmt"
+	"image"
+	"image/color"
+	"math"
+	"math/rand"
+	"sort"
+	"unsafe"
+)
+
+type PointOfInterest struct {
+	X, Y        int
+	Connections int
+}
+
+type Road struct {
+	Start, End, Control *PointOfInterest
+	Width               int
+	Points              []image.Point
+	Importance          int
+}
+
+func GenerateRoads(width, height int, settings *Settings, noiseImg image.Image) ([]image.Point, *image.RGBA) {
+	img := image.NewRGBA(image.Rect(0, 0, width, height))
+	// Transparent background
+	for y := 0; y < height; y++ {
+		for x := 0; x < width; x++ {
+			img.Set(x, y, color.Transparent)
+		}
+	}
+
+	rand.Seed(settings.Seed)
+	roadColor := color.RGBA{R: 139, G: 69, B: 19, A: 255}
+
+	pois := generatePOIs(width, height, settings)
+	if len(pois) == 0 {
+		return nil, img
+	}
+
+	roads := connectPOIs(pois, width, height, settings)
+	assignRoadWidths(roads, settings)
+
+	var allRoadPixels []image.Point
+	for _, road := range roads {
+		roadPixels := drawCurve(img, road.Start, road.End, road.Control, roadColor, road.Width)
+		allRoadPixels = append(allRoadPixels, roadPixels...)
+	}
+
+	return allRoadPixels, img
+}
+
+func generatePOIs(width, height int, settings *Settings) []*PointOfInterest {
+	numPOIs := settings.NumRoads / 2
+	if numPOIs == 0 {
+		return nil
+	}
+
+	numExits := settings.RoadExits
+	if numExits > settings.NumRoads {
+		numExits = settings.NumRoads
+	}
+
+	pois := make([]*PointOfInterest, numPOIs)
+	centerX := width / 2
+	centerY := height / 2
+
+	// Distribution affects the radius
+	maxRadius := math.Min(float64(width)/2, float64(height)/2)
+	radius := maxRadius * (settings.RoadDistribution / 100.0)
+
+	for i := 0; i < numPOIs; i++ {
+		// Handle exits
+		if i < numExits {
+			side := rand.Intn(4)
+			var x, y int
+			switch side {
+			case 0: // Top
+				x = rand.Intn(width)
+				y = 0
+			case 1: // Bottom
+				x = rand.Intn(width)
+				y = height - 1
+			case 2: // Left
+				x = 0
+				y = rand.Intn(height)
+			case 3: // Right
+				x = width - 1
+				y = rand.Intn(height)
+			}
+			pois[i] = &PointOfInterest{X: x, Y: y}
+			continue
+		}
+
+		angle := rand.Float64() * 2 * math.Pi
+		r := rand.Float64() * radius
+		x := int(float64(centerX) + r*math.Cos(angle))
+		y := int(float64(centerY) + r*math.Sin(angle))
+		pois[i] = &PointOfInterest{X: x, Y: y}
+	}
+
+	return pois
+}
+
+func connectPOIs(pois []*PointOfInterest, width, height int, settings *Settings) []*Road {
+	if len(pois) < 2 {
+		return nil
+	}
+
+	var roads []*Road
+	visited := make(map[*PointOfInterest]bool)
+	existingRoads := make(map[string]bool)
+
+	// Find the center-most POI
+	centerX := width / 2
+	centerY := height / 2
+	var startNode *PointOfInterest
+	minDist := -1.0
+
+	for _, poi := range pois {
+		dist := math.Sqrt(math.Pow(float64(poi.X-centerX), 2) + math.Pow(float64(poi.Y-centerY), 2))
+		if startNode == nil || dist < minDist {
+			minDist = dist
+			startNode = poi
+		}
+	}
+
+	visited[startNode] = true
+
+	for len(visited) < len(pois) {
+		var closest *PointOfInterest
+		var fromNode *PointOfInterest
+		minDist := -1.0
+
+		for poi := range visited {
+			for _, other := range pois {
+				if !visited[other] {
+					dist := math.Sqrt(math.Pow(float64(poi.X-other.X), 2) + math.Pow(float64(poi.Y-other.Y), 2))
+
+					// Check if road exists
+					key := fmt.Sprintf("%p-%p", poi, other)
+					if uintptr(unsafe.Pointer(poi)) > uintptr(unsafe.Pointer(other)) {
+						key = fmt.Sprintf("%p-%p", other, poi)
+					}
+					if existingRoads[key] {
+						continue
+					}
+
+					if closest == nil || dist < minDist {
+						minDist = dist
+						closest = other
+						fromNode = poi
+					}
+				}
+			}
+		}
+
+		if closest != nil {
+			visited[closest] = true
+			fromNode.Connections++
+			closest.Connections++
+
+			// Add road to existing roads map
+			key := fmt.Sprintf("%p-%p", fromNode, closest)
+			if uintptr(unsafe.Pointer(fromNode)) > uintptr(unsafe.Pointer(closest)) {
+				key = fmt.Sprintf("%p-%p", closest, fromNode)
+			}
+			existingRoads[key] = true
+
+			// Create control point for curve
+			midX := (fromNode.X + closest.X) / 2
+			midY := (fromNode.Y + closest.Y) / 2
+			dist := math.Sqrt(math.Pow(float64(fromNode.X-closest.X), 2) + math.Pow(float64(fromNode.Y-closest.Y), 2))
+			offset := dist * (settings.RoadCurvyness / 100.0) * (rand.Float64() - 0.5)
+
+			controlX := int(float64(midX) + offset)
+			controlY := int(float64(midY) + offset)
+
+			roads = append(roads, &Road{
+				Start:   fromNode,
+				End:     closest,
+				Control: &PointOfInterest{X: controlX, Y: controlY},
+			})
+		}
+	}
+
+	for _, road := range roads {
+		road.Importance = road.Start.Connections + road.End.Connections
+	}
+
+	return roads
+}
+
+func assignRoadWidths(roads []*Road, settings *Settings) {
+	if len(roads) == 0 {
+		return
+	}
+
+	sort.Slice(roads, func(i, j int) bool {
+		return roads[i].Importance > roads[j].Importance
+	})
+
+	minWidth := settings.MinRoadWidth
+	maxWidth := settings.MaxRoadWidth
+	widthStep := 0.0
+	if len(roads) > 1 {
+		widthStep = (maxWidth - minWidth) / float64(len(roads)-1)
+	}
+
+	for i, road := range roads {
+		road.Width = int(maxWidth - float64(i)*widthStep)
+	}
+}
+
+func drawCurve(img *image.RGBA, p0, p1, p2 *PointOfInterest, col color.Color, width int) []image.Point {
+	var points []image.Point
+	var lastX, lastY int = -1, -1
+	for t := 0.0; t <= 1.0; t += 0.01 {
+		x := (1-t)*(1-t)*float64(p0.X) + 2*(1-t)*t*float64(p2.X) + t*t*float64(p1.X)
+		y := (1-t)*(1-t)*float64(p0.Y) + 2*(1-t)*t*float64(p2.Y) + t*t*float64(p1.Y)
+
+		if lastX != -1 {
+			linePoints := drawLine(img, lastX, lastY, int(x), int(y), col, width)
+			points = append(points, linePoints...)
+		}
+		lastX, lastY = int(x), int(y)
+	}
+	return points
+}
+
+// Bresenham's line algorithm for drawing segments of the curve
+func drawLine(img *image.RGBA, x0, y0, x1, y1 int, col color.Color, width int) []image.Point {
+	var points []image.Point
+	dx := abs(x1 - x0)
+	dy := -abs(y1 - y0)
+	sx := -1
+	if x0 < x1 {
+		sx = 1
+	}
+	sy := -1
+	if y0 < y1 {
+		sy = 1
+	}
+	err := dx + dy
+
+	for {
+		for i := -width / 2; i <= width/2; i++ {
+			for j := -width / 2; j <= width/2; j++ {
+				px := x0 + i
+				py := y0 + j
+				if img.Bounds().Min.X <= px && px < img.Bounds().Max.X && img.Bounds().Min.Y <= py && py < img.Bounds().Max.Y {
+					img.Set(px, py, col)
+					points = append(points, image.Point{X: px, Y: py})
+				}
+			}
+		}
+
+		if x0 == x1 && y0 == y1 {
+			break
+		}
+		e2 := 2 * err
+		if e2 >= dy {
+			err += dy
+			x0 += sx
+		}
+		if e2 <= dx {
+			err += dx
+			y0 += sy
+		}
+	}
+	return points
+}
+
+func abs(x int) int {
+	if x < 0 {
+		return -x
+	}
+	return x
+}
@@ -8,23 +8,29 @@ import (
 )

 type Settings struct {
-	Detail         float64 `json:"detail"`
-	Roughness      float64 `json:"roughness"`
-	Width          int     `json:"width"`
-	Height         int     `json:"height"`
-	Lakes          int     `json:"lakes"`
-	LakeSizeLower  float64 `json:"lake_size_lower"`
-	LakeSizeUpper  float64 `json:"lake_size_upper"`
-	MinTreeSize    float64 `json:"min_tree_size"`
-	MaxTreeSize    float64 `json:"max_tree_size"`
-	TreeCoverage   float64 `json:"tree_coverage"`
-	TreeClumpiness float64 `json:"tree_clumpiness"`
-	Seed           int64   `json:"seed"`
-	Rivers         int     `json:"rivers"`
-	MinRiverWidth  float64 `json:"min_river_width"`
-	MaxRiverWidth  float64 `json:"max_river_width"`
-	RiverCurvyness float64 `json:"river_curvyness"`
-	LastExportPath string  `json:"last_export_path"`
+	Detail           float64 `json:"detail"`
+	Roughness        float64 `json:"roughness"`
+	Width            int     `json:"width"`
+	Height           int     `json:"height"`
+	Lakes            int     `json:"lakes"`
+	LakeSizeLower    float64 `json:"lake_size_lower"`
+	LakeSizeUpper    float64 `json:"lake_size_upper"`
+	MinTreeSize      float64 `json:"min_tree_size"`
+	MaxTreeSize      float64 `json:"max_tree_size"`
+	TreeCoverage     float64 `json:"tree_coverage"`
+	TreeClumpiness   float64 `json:"tree_clumpiness"`
+	Seed             int64   `json:"seed"`
+	Rivers           int     `json:"rivers"`
+	MinRiverWidth    float64 `json:"min_river_width"`
+	MaxRiverWidth    float64 `json:"max_river_width"`
+	RiverCurvyness   float64 `json:"river_curvyness"`
+	NumRoads         int     `json:"num_roads"`
+	MinRoadWidth     float64 `json:"min_road_width"`
+	MaxRoadWidth     float64 `json:"max_road_width"`
+	RoadExits        int     `json:"road_exits"`
+	RoadCurvyness    float64 `json:"road_curvyness"`
+	RoadDistribution float64 `json:"road_distribution"`
+	LastExportPath   string  `json:"last_export_path"`
 }

 func (s *Settings) Save() error {
@@ -64,23 +70,29 @@ func LoadSettings() (*Settings, error) {
 				homeDir = "."
 			}
 			return &Settings{
-				Detail:         1,
-				Roughness:      0,
-				Width:          300,
-				Height:         300,
-				Lakes:          0,
-				LakeSizeLower:  1,
-				LakeSizeUpper:  5,
-				MinTreeSize:    5,
-				MaxTreeSize:    20,
-				TreeCoverage:   20,
-				TreeClumpiness: 50,
-				Seed:           time.Now().UnixNano(),
-				Rivers:         0,
-				MinRiverWidth:  1,
-				MaxRiverWidth:  5,
-				RiverCurvyness: 50,
-				LastExportPath: homeDir,
+				Detail:           1,
+				Roughness:        0,
+				Width:            300,
+				Height:           300,
+				Lakes:            0,
+				LakeSizeLower:    1,
+				LakeSizeUpper:    5,
+				MinTreeSize:      5,
+				MaxTreeSize:      20,
+				TreeCoverage:     20,
+				TreeClumpiness:   50,
+				Seed:             time.Now().UnixNano(),
+				Rivers:           0,
+				MinRiverWidth:    1,
+				MaxRiverWidth:    5,
+				RiverCurvyness:   50,
+				NumRoads:         100,
+				MinRoadWidth:     2,
+				MaxRoadWidth:     8,
+				RoadExits:        5,
+				RoadCurvyness:    50,
+				RoadDistribution: 50,
+				LastExportPath:   homeDir,
 			}, nil
 		}
 		return nil, err