Loading resources from disk/embed if possible.

cmd/tins2021/levelcontroller.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"image"
 	"image/color"
 	"math/rand"
 	"strconv"
@@ -35,17 +36,27 @@ func newLevelControl(ctx ui.Context, level *tins2021.Level) *levelController {
 		"blocked": newCubeTexture(textures, tins2021.Purple),
 		"colored": newCubeTexture(textures, tins2021.Blue),
 	}
-	newAnimatedTexture(textures, "star", tins2021.CreateStar(5), tins2021.Yellow, tins2021.NewRotateAnimation(defaultAnimationFrames))
-	newAnimatedTexture(textures, "heart", tins2021.CreateHeart(), tins2021.Red, tins2021.NewRotateAnimation(defaultAnimationFrames))
+	newAnimatedTexture(ctx, "star", "resources/images/star.png", func() image.Image {
+		return tins2021.AnimatePolygon(tins2021.CreateStar(5), tins2021.Yellow, tins2021.NewRotateAnimation(defaultAnimationFrames))
+	})
+	newAnimatedTexture(ctx, "heart", "resources/images/heart.png", func() image.Image {
+		return tins2021.AnimatePolygon(tins2021.CreateHeart(), tins2021.Red, tins2021.NewRotateAnimation(defaultAnimationFrames))
+	})
 
 	control.MonsterTextureNames = map[tins2021.MonsterType]string{
 		tins2021.MonsterTypeStraight: "straight-walking-monster",
 		tins2021.MonsterTypeRandom:   "random-walking-monster",
 		tins2021.MonsterTypeChaser:   "chasing-monster",
 	}
-	newAnimatedTexture(textures, control.MonsterTextureNames[tins2021.MonsterTypeStraight], tins2021.CreateHexagon(), tins2021.Green, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
-	newAnimatedTexture(textures, control.MonsterTextureNames[tins2021.MonsterTypeRandom], tins2021.CreateHexagon(), tins2021.Blue, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
-	newAnimatedTexture(textures, control.MonsterTextureNames[tins2021.MonsterTypeChaser], tins2021.CreateHexagon(), tins2021.Purple, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
+	newAnimatedTexture(ctx, control.MonsterTextureNames[tins2021.MonsterTypeStraight], "resources/images/monster-straight.png", func() image.Image {
+		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), tins2021.Green, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
+	})
+	newAnimatedTexture(ctx, control.MonsterTextureNames[tins2021.MonsterTypeRandom], "resources/images/monster-random.png", func() image.Image {
+		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), tins2021.Blue, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
+	})
+	newAnimatedTexture(ctx, control.MonsterTextureNames[tins2021.MonsterTypeChaser], "resources/images/monster-chaser.png", func() image.Image {
+		return tins2021.AnimatePolygon(tins2021.CreateHexagon(), tins2021.Purple, tins2021.NewWobbleAnimation(defaultAnimationFrames, 30))
+	})
 
 	small, err := tins2021.NewBitmapFont(ctx.Renderer(), ctx.Fonts().Font("small"), tins2021.AllCharacters...)
 	if err != nil {

cmd/tins2021/textures.go

@@ -2,8 +2,9 @@ package main
 
 import (
 	"image"
+	"image/png"
+	"os"
 
-	"opslag.de/schobers/geom"
 	"opslag.de/schobers/tins2021"
 	"opslag.de/schobers/zntg/ui"
 )
@@ -44,10 +45,39 @@ func (t cubeTexture) Scaled(textures *ui.Textures, scale float32) cubeTexture {
 	}
 }
 
-func newAnimatedTexture(textures *ui.Textures, name string, polygon geom.PolygonF, color string, animation tins2021.AnimationRenderer) tins2021.AnimatedTexture {
-	texture, err := textures.CreateTextureGo(name, tins2021.AnimatePolygon(polygon, color, animation), true)
+func loadTextureImage(ctx ui.Context, resource string) image.Image {
+	in, err := ctx.Resources().OpenResource(resource)
+	if err != nil {
+		return nil
+	}
+	defer in.Close()
+	im, err := png.Decode(in)
+	if err != nil {
+		return nil
+	}
+	return im
+}
+
+func saveTextureImage(resource string, im image.Image) {
+	out, err := os.Create(resource)
+	if err != nil {
+		return
+	}
+	defer out.Close()
+	png.Encode(out, im)
+}
+
+func newAnimatedTexture(ctx ui.Context, name, resource string, render animatedTextureRenderFn) tins2021.AnimatedTexture {
+	raw := loadTextureImage(ctx, resource)
+	if raw == nil {
+		raw = render()
+		saveTextureImage(resource, raw)
+	}
+	texture, err := ctx.Textures().CreateTextureGo(name, raw, true)
 	if err != nil {
 		panic(err)
 	}
 	return tins2021.NewSquareAnimatedTexture(texture)
 }
+
+type animatedTextureRenderFn func() image.Image