From f20896ef3b147ac07769eb36c67ba436c6d2ed22 Mon Sep 17 00:00:00 2001
From: Martin Ashby <martin@martin-laptop.lan>
Date: Mon, 28 May 2018 16:29:18 +0100
Subject: New unicorns for displaing animated gifs! Tests pass on both old &
 new for fakes

---
 unicorn/FakeUnicorn2.go | 70 ++++++++++++++++++++++---------------------------
 1 file changed, 31 insertions(+), 39 deletions(-)

(limited to 'unicorn/FakeUnicorn2.go')

diff --git a/unicorn/FakeUnicorn2.go b/unicorn/FakeUnicorn2.go
index 73ce8ab..27629d2 100644
--- a/unicorn/FakeUnicorn2.go
+++ b/unicorn/FakeUnicorn2.go
@@ -8,50 +8,42 @@ import (
 
 type FakeUnicorn2 struct {
 	BaseUnicorn2
+	*BaseFakeUnicorn
 }
 
-func renderImage(im image.Image) {
-	// b := im.Bounds()
-	// width := b.Dx()
-	// height := b.Dy()
-	// for x := 0; x < width; x++ {
-	// 	for y := 0; y < height; y++ {
-	// 		r, g, b, _ := im.At(x, y).RGBA()
-	// 		un.SetPixel(uint8(x), uint8(y), uint8(r), uint8(g), uint8(b))
-	// 	}
-	// }
-	// un.Show()
-}
-
-func render() {
-	// for !stop {
-	// 	for i := 0; i < len(gf.Image); i++ {
-	// 		im := gf.Image[i]
-	// 		delay := gf.Delay[i] //100ths of a second
-	// 		renderImage(un, im)
-	// 		time.Sleep(time.Duration(delay * 10000000)) // nanoseconds 10^-9 sec
-	// 	}
-	// }
-}
-
-func (u *FakeUnicorn2) StartRender() {
-
-}
-
-func MainLoop() {
-	running := true
-	for running {
-		for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
-			switch event.(type) {
-			case *sdl.QuitEvent:
-				println("Quit")
-				running = false
-				break
+func (u *FakeUnicorn2) renderImage(im image.Image) {
+	b := im.Bounds()
+	width, height := b.Dx(), b.Dy()
+	for x := 0; x < width; x++ {
+		for y := 0; y < height; y++ {
+			col := im.At(x, y)
+			r, g, b, _ := col.RGBA()
+			// Ignore alpha for now, not worked out how it should work on real unicorn
+			if err := u.renderer.SetDrawColor(uint8(r), uint8(g), uint8(b), uint8(255)); err != nil {
+				panic(err)
+			}
+			cellWidth := u.displayWidth / int32(width)
+			cellHeight := u.displayHeight / int32(height)
+			if err := u.renderer.FillRect(&sdl.Rect{
+				X: cellWidth * int32(x),
+				Y: u.displayHeight - (cellHeight * int32(y)) - cellHeight, // SDL Y coordinate is from the top
+				W: cellWidth,
+				H: cellHeight,
+			}); err != nil {
+				panic(err)
 			}
 		}
 	}
+	u.renderer.Present()
 }
 
-func NewUnicorn2() *FakeUnicorn2 {
-	return &FakeUnicorn2{}
+func NewUnicorn2() (*FakeUnicorn2, error) {
+	baseFake, err := NewBaseFakeUnicorn(300, 300)
+	if err != nil {
+		return nil, err
+	}
+	return &FakeUnicorn2{
+		BaseUnicorn2{},
+		baseFake,
+	}, nil
 }
-- 
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