func setModelViewOptions() {
gl.Enable(gl.TEXTURE_2D)
gl.Disable(gl.LIGHTING)
gl.Disable(gl.DITHER)
gl.Enable(gl.CULL_FACE)
gl.CullFace(gl.FRONT)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.BLEND)
gl.Enable(gl.ALPHA_TEST)
gl.DepthFunc(gl.LEQUAL)
gl.Disable(gl.DEPTH_TEST)
}
// CullFace specifies which polygons are candidates for culling.
//
// Valid modes: FRONT, BACK, FRONT_AND_BACK.
//
// http://www.khronos.org/opengles/sdk/docs/man3/html/glCullFace.xhtml
func CullFace(mode Enum) {
gl.CullFace(uint32(mode))
}
func main() {
fmt.Printf(`WolfenGo v%s, Copyright (C) 2016 gdm85
https://github.com/gdm85/wolfengo
WolfenGo comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under GNU/GPLv2 license.`+"\n", version)
if err := glfw.Init(); err != nil {
fatalError(err)
}
defer glfw.Terminate()
// create a context and activate it
glfw.WindowHint(glfw.ContextVersionMajor, 2)
glfw.WindowHint(glfw.ContextVersionMinor, 1)
glfw.WindowHint(glfw.Resizable, glfw.False)
glfw.WindowHint(glfw.DoubleBuffer, glfw.True)
var err error
Window, err = glfw.CreateWindow(800, 600, "WolfenGo", nil, nil)
if err != nil {
fatalError(err)
}
Window.MakeContextCurrent()
// gl.Init() should be called after context is current
if err := gl.Init(); err != nil {
fatalError(err)
}
glfw.SwapInterval(1) // enable vertical refresh
fmt.Println(gl.GoStr(gl.GetString(gl.VERSION)))
if debugGL {
gl.DebugMessageCallback(debugCb, unsafe.Pointer(nil))
gl.Enable(gl.DEBUG_OUTPUT)
}
// init graphics
gl.ClearColor(0.0, 0.0, 0.0, 0.0)
gl.FrontFace(gl.CW)
gl.CullFace(gl.BACK)
gl.Enable(gl.CULL_FACE)
gl.Enable(gl.DEPTH_TEST)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.DEPTH_CLAMP)
gl.Enable(gl.TEXTURE_2D)
isRunning := false
// load all assets
_, err = getBasicShader()
if err != nil {
fatalError(err)
}
err = _defaultMedkit.initMedkit()
if err != nil {
fatalError(err)
}
err = _defaultMonster.initMonster()
if err != nil {
fatalError(err)
}
getDoorMesh()
initPlayer()
err = initGun()
if err != nil {
fatalError(err)
}
G, err = NewGame()
if err != nil {
fatalError(err)
}
// GAME STARTS
isRunning = true
var frames uint64
var frameCounter time.Duration
frameTime := time.Duration(1000/frameCap) * time.Millisecond
lastTime := time.Now()
var unprocessedTime time.Duration
for isRunning {
var render bool
startTime := time.Now()
passedTime := startTime.Sub(lastTime)
lastTime = startTime
unprocessedTime += passedTime
frameCounter += passedTime
for unprocessedTime > frameTime {
render = true
unprocessedTime -= frameTime
if Window.ShouldClose() {
isRunning = false
}
G.timeDelta = frameTime.Seconds()
glfw.PollEvents()
err := G.input()
if err != nil {
fatalError(err)
}
err = G.update()
if err != nil {
fatalError(err)
}
if frameCounter >= time.Second {
if printFPS {
fmt.Printf("%d FPS\n", frames)
}
frames = 0
frameCounter -= time.Second
}
}
if render {
//TODO: Stencil Buffer
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
G.render()
frames++
Window.SwapBuffers()
} else {
time.Sleep(time.Millisecond)
}
}
Window.Destroy()
}