Added function to easily access loaded textures.

res_util.go

@@ -0,0 +1,23 @@
+package goga
+
+import (
+	"errors"
+)
+
+// Finds and returns a Tex resource.
+// If not found or when the resource is of wrong type, an error will be returned.
+func GetTex(name string) (*Tex, error) {
+	res := GetResByName(name)
+
+	if res == nil {
+		return nil, errors.New("Resource not found")
+	}
+
+	tex, ok := res.(*Tex)
+
+	if !ok {
+		return nil, errors.New("Resource was not of type *Tex")
+	}
+
+	return tex, nil
+}