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/BaseFakeUnicorn.go | 78 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 unicorn/BaseFakeUnicorn.go

(limited to 'unicorn/BaseFakeUnicorn.go')

diff --git a/unicorn/BaseFakeUnicorn.go b/unicorn/BaseFakeUnicorn.go
new file mode 100644
index 0000000..7910814
--- /dev/null
+++ b/unicorn/BaseFakeUnicorn.go
@@ -0,0 +1,78 @@
+package unicorn
+
+import "github.com/veandco/go-sdl2/sdl"
+
+// BaseFakeUnicorn ...
+// The base for FakeUnicorn & FakeUnicorn2
+// Share the SDL code.
+type BaseFakeUnicorn struct {
+	displayWidth  int32
+	displayHeight int32
+	window        *sdl.Window
+	renderer      *sdl.Renderer
+}
+
+func NewBaseFakeUnicorn(width, height int32) (*BaseFakeUnicorn, error) {
+	if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
+		return nil, err
+	}
+
+	unicorn := &BaseFakeUnicorn{
+		displayWidth:  width,
+		displayHeight: height,
+		window:        nil,
+		renderer:      nil,
+	}
+	if err := unicorn.createWindow(); err != nil {
+		unicorn.Close()
+		return nil, err
+	}
+	if err := unicorn.createRenderer(); err != nil {
+		unicorn.Close()
+		return nil, err
+	}
+	return unicorn, nil
+}
+
+func (f *BaseFakeUnicorn) createWindow() error {
+	window, err := sdl.CreateWindow("Fake Unicorn",
+		sdl.WINDOWPOS_UNDEFINED,
+		sdl.WINDOWPOS_UNDEFINED,
+		f.displayWidth,
+		f.displayHeight,
+		sdl.WINDOW_SHOWN)
+	f.window = window
+	return err
+}
+
+func (f *BaseFakeUnicorn) createRenderer() error {
+	renderer, err := sdl.CreateRenderer(f.window, -1, sdl.RENDERER_ACCELERATED)
+	f.renderer = renderer
+	return err
+}
+
+func (f *BaseFakeUnicorn) Close() error {
+	if f.window != nil {
+		f.window.Destroy()
+	}
+	if f.renderer != nil {
+		f.renderer.Destroy()
+	}
+	return nil
+}
+
+// MainLoop ...
+// Handle UI events so OS doesn't think we're frozen
+func (f *BaseFakeUnicorn) 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
+			}
+		}
+	}
+}
-- 
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