first commit

gogame/display/display.go

@@ -0,0 +1,63 @@
+package display
+
+import (
+	"github.com/veandco/go-sdl2/sdl"
+	"../../gogame"
+)
+
+var Inited =  false
+var window *sdl.Window
+
+func AssertInited() {
+	if Inited == false {
+		panic("run gogame.DisplayInit first")
+	}
+}
+
+func Init() bool {
+	sdl.Do(func() {
+		
+		if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
+			panic(err)
+		}
+	
+		Inited = true
+	})
+	
+  return Inited 
+}
+
+
+func SetMode(w,h,flags,depth int32) *sdl.Surface {
+	var err error
+	var surface *sdl.Surface
+	AssertInited()
+	
+	sdl.Do(func() {
+		window, err = sdl.CreateWindow("gogame", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
+			w, h, uint32( gogame.SHOWN | flags))
+	
+		if err != nil {
+			panic(err)
+		}
+
+		surface,err = window.GetSurface()
+		if err != nil {
+			panic(err)
+		}
+	})
+
+	return surface
+}
+
+func Flip() {
+	sdl.Do(func() {
+
+		if window != nil {
+			window.UpdateSurface()
+		}
+	})
+}
+		
+
+