Animating a nice backbuffer. Thank you Casey Muratori of Handmade Hero fame (https://www.youtube.com/watch?v=hNKU8Jiza2g)

gb/console.go

@@ -1,17 +1,40 @@
 package gb
 
+import (
+	"image"
+	"image/color"
+)
+
+const (
+	ConsoleWidth  = 160
+	ConsoleHeight = 144
+)
+
 type Console struct {
 	Cartridge *Cartridge
+	front     *image.RGBA
 }
 
 func NewConsole(path string) (*Console, error) {
 	cartridge := InsertCartridge(path)
+	buffer := image.NewRGBA(image.Rect(0, 0, ConsoleWidth, ConsoleHeight))
 
-	console := Console{cartridge}
+	console := Console{Cartridge: cartridge, front: buffer}
 
 	return &console, nil
 }
 
-func (console *Console) Update(dt uint64) {
-	console.StepSeconds(dt)
+func (console *Console) StepMilliSeconds(ms uint64) {
+	speed := int(ms / 3)
+	for y := 0; y < ConsoleHeight; y++ {
+		for x := 0; x < ConsoleWidth; x++ {
+			console.front.Set(x, y, color.RGBA{0, uint8(y + speed), uint8(x + speed), 255})
+		}
+	}
+
+}
+
+func (console *Console) Buffer() *image.RGBA {
+
+	return console.front
 }