added keybindings to control RandomSeed

Author: aldernero

controls.go

@@ -114,6 +114,14 @@ func (s *Slider) CheckAndUpdate() (bool, error) {
 	return didChange, nil
 }
 
+func (s *Slider) StringVal() string {
+	digits := 0
+	if s.Incr < 1 {
+		digits = int(math.Ceil(math.Abs(math.Log10(s.Incr))))
+	}
+	return strconv.FormatFloat(s.Val, 'f', digits, 64)
+}
+
 func (s *Slider) Draw(ctx *gg.Context) {
 	ctx.SetColor(s.colors.Background)
 	ctx.DrawRectangle(s.Pos.X, s.Pos.Y, s.Width, SliderHeight)
@@ -124,14 +132,10 @@ func (s *Slider) Draw(ctx *gg.Context) {
 	ctx.SetColor(s.colors.Outline)
 	ctx.DrawRectangle(s.Pos.X, s.Pos.Y, s.Width, SliderHeight)
 	ctx.Stroke()
-	digits := 0
-	if s.Incr < 1 {
-		digits = int(math.Ceil(math.Abs(math.Log10(s.Incr))))
-	}
 	ctx.SetColor(s.colors.Text)
 	ctx.DrawStringWrapped(s.Name, s.Pos.X, s.Pos.Y-ctx.FontHeight()-SliderVPadding, 0, 0, s.Width, 1, gg.AlignLeft)
 	ctx.DrawStringWrapped(
-		strconv.FormatFloat(s.Val, 'f', digits, 64),
+		s.StringVal(),
 		s.Pos.X, s.Pos.Y-ctx.FontHeight()-SliderVPadding,
 		0, 0, s.Width, 1, gg.AlignRight)
 }

examples/10print/main.go

@@ -59,7 +59,7 @@ func (t *Truchet) flip(r int, c int) {
 
 func reset(s *sketchy.Sketch) {
 	cellSize := s.Slider("cellSize")
-	board.rng.SetSeed(int64(s.Slider("seed")))
+	board.rng.SetSeed(s.RandomSeed)
 	board.rng.SetNoiseOctaves(int(s.Slider("octaves")))
 	board.rng.SetNoisePersistence(s.Slider("persistence"))
 	board.rng.SetNoiseLacunarity(s.Slider("lacunarity"))

examples/10print/sketch.json

@@ -23,19 +23,6 @@
             "FillColor": "",
             "TextColor": ""
         },
-        {
-            "Name": "seed",
-            "Width": 226,
-            "Height": 15,
-            "MinVal": -10000,
-            "MaxVal": 10000,
-            "Val": -4,
-            "Incr": 1,
-            "OutlineColor": "",
-            "BackgroundColor": "",
-            "FillColor": "",
-            "TextColor": ""
-        },
         {
             "Name": "octaves",
             "Width": 226,

sketch.go

@@ -3,16 +3,16 @@ package sketchy
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/fogleman/gg"
+	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/inpututil"
 	"image"
 	"image/color"
 	"image/png"
 	"io/ioutil"
 	"log"
+	"math/rand"
 	"os"
-
-	"github.com/fogleman/gg"
-	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/hajimehoshi/ebiten/v2/inpututil"
 )
 
 const (
@@ -51,6 +51,7 @@ type Sketch struct {
 	isSavingPNG               bool
 	isSavingScreen            bool
 	needToClear               bool
+	Tick                      int64 `json:"-"`
 }
 
 func NewSketchFromFile(fname string) (*Sketch, error) {
@@ -117,6 +118,27 @@ func (s *Sketch) UpdateControls() {
 	if inpututil.IsKeyJustReleased(ebiten.KeyC) {
 		s.saveConfig()
 	}
+	if inpututil.IsKeyJustReleased(ebiten.KeyUp) {
+		s.RandomSeed++
+		s.Rand.SetSeed(s.RandomSeed)
+		controlsChanged = true
+		fmt.Println("RandomSeed incremented: ", s.RandomSeed)
+	}
+	if inpututil.IsKeyJustReleased(ebiten.KeyDown) {
+		s.RandomSeed--
+		s.Rand.SetSeed(s.RandomSeed)
+		controlsChanged = true
+		fmt.Println("RandomSeed decremented: ", s.RandomSeed)
+	}
+	if inpututil.IsKeyJustReleased(ebiten.KeyNumpadDecimal) {
+		s.RandomSeed = rand.Int63()
+		s.Rand.SetSeed(s.RandomSeed)
+		controlsChanged = true
+		fmt.Println("RandomSeed changed: ", s.RandomSeed)
+	}
+	if inpututil.IsKeyJustReleased(ebiten.KeySpace) {
+		s.DumpState()
+	}
 	for i := range s.Sliders {
 		didChange, err := s.Sliders[i].CheckAndUpdate()
 		if err != nil {
@@ -192,6 +214,7 @@ func (s *Sketch) Layout(outsideWidth, outsideHeight int) (int, int) {
 func (s *Sketch) Update() error {
 	s.UpdateControls()
 	s.Updater(s)
+	s.Tick++
 	return nil
 }
 
@@ -249,13 +272,25 @@ func (s *Sketch) Draw(screen *ebiten.Image) {
 }
 
 func (s *Sketch) SketchCoords(x, y float64) Point {
-	return Point{X: float64(x) - s.ControlWidth, Y: float64(y)}
+	return Point{X: x - s.ControlWidth, Y: y}
 }
 
 func (s *Sketch) PointInSketchArea(x, y float64) bool {
 	return x > s.ControlWidth && x <= (s.ControlWidth+s.SketchWidth) && y >= 0 && y <= s.SketchHeight
 }
 
+func (s *Sketch) DumpState() {
+	for i := range s.Sliders {
+		fmt.Printf("%s: %s\n", s.Sliders[i].Name, s.Sliders[i].StringVal())
+	}
+	for i := range s.Toggles {
+		if !s.Toggles[i].IsButton {
+			fmt.Printf("%s: %t\n", s.Toggles[i].Name, s.Toggles[i].Checked)
+		}
+	}
+	fmt.Println("RandomSeed: ", s.RandomSeed)
+}
+
 func (s *Sketch) buildMaps() {
 	s.sliderControlMap = make(map[string]int)
 	for i := range s.Sliders {