Gives GoLang applications a Window with an OpenGL (glfw) context with callbacks for Mouse and Keyboard.
go get -u github.com/amortaza/go-xel
xel is used by the Bellina UI Library
Pay careful attention to the init() function in the example. runtime.LockOSThread() must be called in init().
package main
import (
"github.com/amortaza/go-xel"
"runtime"
)
func onLoop() {
// this gets called every loop...use it wisely
}
func onAfterGL() {
// This callback gets called after the OpenGL context has been
// initialized.
// All OpenGL calls are valid now
}
func onBeforeWindowDelete() {
// Right before the window is deleted, this callback can be used
// to free up resources.
}
func onResize(width, height int) {
// This callback gets called for every resize of the window.
}
func onMouseMove(x, y int) {
// This callback gets called for every movement of the mouse.
}
func onMouseButton(button xel.MouseButton, action xel.ButtonAction) {
// This callback gets called for every press of the mouse button.
}
func onKey(key xel.KeyboardKey, action xel.ButtonAction, alt, ctrl, shift bool) {
// This callback gets called for every press of the keyboard.
}
func init() {
// This bit is required for GLFW.
runtime.LockOSThread()
}
func main() {
// Create an 800 by 600 pixel window (is this 1997 again!)
xel.Init(100, 100, 800, 600)
// Setup the callbacks
xel.SetCallbacks(onAfterGL, onLoop, onBeforeWindowDelete, onResize, onMouseMove, onMouseButton, onKey)
// Start the loop!
xel.Loop("Hello, World!")
}