Started texture mapped fonts demo.

demo/text/assets/dejavu.json

@@ -0,0 +1,28 @@
+[
+	{
+		"char": "A",
+		"x": 0,
+		"y": 0
+	},
+	{
+		"char": "b",
+		"x": 1,
+		"y": 0
+	},
+	{
+		"char": "e",
+		"x": 2,
+		"y": 0
+	},
+	{
+		"char": "r",
+		"x": 0,
+		"y": 1
+	},
+	{
+		"char": "'",
+		"x": 3,
+		"y": 0,
+		"offset": 0.5
+	}
+]

demo/text/text.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"github.com/DeKugelschieber/go-game"
+)
+
+const (
+	gopher_path = "src/github.com/DeKugelschieber/go-game/demo/sprite/assets/gopher.png"
+)
+
+type Game struct{}
+
+func (g *Game) Setup() {
+	// load texture
+	_, err := goga.LoadRes(gopher_path)
+
+	if err != nil {
+		panic(err)
+	}
+
+	// create sprite
+	tex, err := goga.GetTex("gopher.png")
+
+	if err != nil {
+		panic(err)
+	}
+
+	sprite := goga.NewSprite(tex)
+	renderer, ok := goga.GetSystemByName("spriteRenderer").(*goga.SpriteRenderer)
+
+	if !ok {
+		panic("Could not find renderer")
+	}
+
+	renderer.Add(sprite.Actor, sprite.Pos2D, sprite.Tex)
+
+	culling, ok := goga.GetSystemByName("culling2d").(*goga.Culling2D)
+
+	if !ok {
+		panic("Could not find culling")
+	}
+
+	culling.Add(sprite.Actor, sprite.Pos2D)
+}
+
+func (g *Game) Update(delta float64) {}
+
+func main() {
+	game := Game{}
+	options := goga.RunOptions{ClearColor: goga.Vec4{1, 1, 1, 0},
+		Resizable:           true,
+		SetViewportOnResize: true,
+		ExitOnClose:         true}
+	goga.Run(&game, &options)
+}