Example #1
0
func (this *Window) initGL() {

	runtime.LockOSThread()

	if gl.Init() != 0 {
		panic("gl init error")
	}

	gl.ShadeModel(gl.SMOOTH)
	gl.CullFace(gl.BACK)
	gl.FrontFace(gl.CCW)
	gl.Enable(gl.CULL_FACE)
	gl.Enable(gl.DEPTH_TEST)
	gl.Enable(gl.LIGHTING)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
	gl.Enable(gl.TEXTURE_2D)
	gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
	var magFilter, minFilter = gl.LINEAR, gl.LINEAR
	if globals.CreateMipmaps {
		minFilter = gl.LINEAR_MIPMAP_LINEAR
	}
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, magFilter)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, minFilter)
	gl.Enable(gl.NORMALIZE)
	gl.ClearColor(.1, .1, .1, 1)
	this.setGLViewport()
}
Example #2
0
func (this *Window) initGL() {
	gl.ShadeModel(gl.SMOOTH) //SMOOTH or FLAT
	gl.CullFace(gl.BACK)
	gl.FrontFace(gl.CCW)
	gl.Enable(gl.CULL_FACE)
	gl.Enable(gl.DEPTH_TEST)
	gl.Enable(gl.LIGHTING)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
	/*gl.Enable(gl.FOG)
	gl.Fogi(gl.FOG_MODE, gl.EXP)
	gl.Fogfv(gl.FOG_COLOR, []float32{0.5,0.5,0.5,1.0})
	gl.Fogf(gl.FOG_DENSITY, 0.0035)
	gl.Hint(gl.FOG_HINT, gl.DONT_CARE)
	gl.Fogf(gl.FOG_START, 1.0)
	gl.Fogf(gl.FOG_END  , 5000.0)//*/
	gl.Enable(gl.TEXTURE_2D)
	gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE) //before: decal, std: modulate
	//gl.TexParameteri(gl.TEXTURE_2D, gl.GENERATE_MIPMAP, true) //mipmaps (dont use it!, its bad!)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)               //GL_LINEAR or GL_NEAREST, no mipmap here
	gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR) //*/
	gl.ClearColor(.1, .1, .1, 1)
	//gl.Enable(gl.PRIMITIVE_RESTART)
	//gl.PrimitiveRestartIndex()
	this.setGLViewport()
}
Example #3
0
File: ca.go Project: samnardoni/ca
func main() {
	var err error

	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}
	defer glfw.Terminate()

	if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}
	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle(Title)
	glfw.SetWindowSizeCallback(onResize)
	glfw.SetKeyCallback(onKey)

	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.Enable(gl.TEXTURE_2D)

	for running && glfw.WindowParam(glfw.Opened) == 1 {
		update()
		draw()
	}
}
Example #4
0
// OpenWindow opens a new window with the given size.
func OpenWindow(w, h int) error {
	glfw.OpenWindowHint(glfw.WindowNoResize, 1)

	r, g, b := 0, 0, 0 // defaults
	a := 8             // 8-bit alpha channel
	d, s := 0, 0       // no depth or stencil buffers
	m := glfw.Windowed
	if err := glfw.OpenWindow(w, h, r, g, b, a, d, s, m); err != nil {
		return err
	}

	if gl.Init() != 0 {
		return errors.New("Failed to initialize OpenGL")
	}

	gl.Enable(gl.TEXTURE_2D)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
	gl.ClearColor(0.0, 0.0, 0.0, 0.0)
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Ortho(0, float64(w), 0, float64(-h), -1, 1)
	gl.MatrixMode(gl.MODELVIEW)
	gl.LoadIdentity()
	gl.Translated(0, float64(-h), 0)
	return nil
}
Example #5
0
func main() {
	glfw.Init()
	defer glfw.Terminate()

	glfw.OpenWindow(640, 480, 8, 8, 8, 8, 0, 0, glfw.Windowed)
	defer glfw.CloseWindow()

	glfw.SetWindowTitle("Tile test")
	glfw.Enable(glfw.StickyKeys)
	glfw.SetSwapInterval(1)
	glfw.SetKeyCallback(inputCallback)

	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Ortho(0, GridWidth, GridHeight, 0, -1, 1)
	gl.MatrixMode(gl.MODELVIEW)
	gl.Disable(gl.DEPTH_TEST)
	gl.Enable(gl.TEXTURE_2D)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)

	gl.ClearColor(0.0, 0.0, 0.0, 1.0)
	initResources()
	initWorld()

	for Running {
		if (time.Since(DT).Nanoseconds() / 1000000) > 15 { //don't loop faster than every 15ms
			DT = time.Now()
			gl.Clear(gl.COLOR_BUFFER_BIT)
			player.update()
			renderScene()
			glfw.SwapBuffers()
		}
	}
}
Example #6
0
func initScreen() {
	sdl.Init(sdl.INIT_VIDEO)
	const (
		resx int = 640
		resy int = 480
	)
	var (
		screen = sdl.SetVideoMode(resx, resy, 16, sdl.OPENGL)
	)

	if screen == nil {
		sdl.Quit()
		panic("Couldn't set GL video mode: " + sdl.GetError() + "\n")
	}

	if gl.Init() != 0 {
		panic("gl error")
	}

	gl.MatrixMode(gl.PROJECTION)
	//gl.MatrixMode(gl.MODELVIEW)

	gl.Viewport(0, 0, int(screen.W), int(screen.H))
	gl.LoadIdentity()
	gl.Ortho(0, float64(screen.W), float64(screen.H), 0, -1.0, 1.0)
	//gl.DepthRange(-1, 1)

	gl.ClearColor(0, 0, 0, 0)
	gl.Clear(gl.COLOR_BUFFER_BIT)
}
Example #7
0
File: main.go Project: sycoso/glfw
func initGL() {
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.Enable(gl.DEPTH_TEST)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
}
Example #8
0
File: main.go Project: sycoso/glfw
func onResize(w, h int) {
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Viewport(0, 0, w, h)
	gl.Ortho(0, float64(w), float64(h), 0, -1.0, 1.0)
	gl.ClearColor(1, 1, 1, 0)
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.MatrixMode(gl.MODELVIEW)
	gl.LoadIdentity()
}
Example #9
0
func initGL() {
	gl.EnableClientState(gl.VERTEX_ARRAY)
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
	gl.Enable(gl.DEPTH_TEST)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
}
Example #10
0
// general OpenGL initialization
func initGL() {
	LoadGLTexture("data/star.bmp")

	gl.Enable(gl.TEXTURE_2D)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE)
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0.0, 0.0, 0.0, 0.5)
	gl.ClearDepth(1.0)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
}
Example #11
0
File: fontdemo.go Project: tmc/glut
func main() {
	glut.InitDisplayMode(glut.SINGLE | glut.RGB)
	glut.InitWindowSize(465, 250)
	glut.CreateWindow("GLUT bitmap & stroke font example")
	gl.ClearColor(1.0, 1.0, 1.0, 1.0)
	gl.Color3f(0, 0, 0)
	gl.LineWidth(3.0)
	glut.DisplayFunc(display)
	glut.ReshapeFunc(reshape)
	glut.MainLoop()
}
Example #12
0
func main() {

	sdl.Init(sdl.INIT_VIDEO)

	var screen = sdl.SetVideoMode(640, 480, 32, sdl.OPENGL)

	if screen == nil {
		panic("sdl error")
	}

	if gl.Init() != 0 {
		panic("gl error")
	}

	pen := Pen{}

	gl.MatrixMode(gl.PROJECTION)

	gl.Viewport(0, 0, int(screen.W), int(screen.H))
	gl.LoadIdentity()
	gl.Ortho(0, float64(screen.W), float64(screen.H), 0, -1.0, 1.0)

	gl.ClearColor(1, 1, 1, 0)
	gl.Clear(gl.COLOR_BUFFER_BIT)

	var running = true

	for running {

		for e := sdl.PollEvent(); e != nil; e = sdl.PollEvent() {
			switch ev := e.(type) {
			case *sdl.QuitEvent:
				running = false
			case *sdl.KeyboardEvent:
				if ev.Keysym.Sym == sdl.K_ESCAPE {
					running = false
				}
			case *sdl.MouseMotionEvent:
				if ev.State != 0 {
					pen.lineTo(Point{int(ev.X), int(ev.Y)})
				} else {
					pen.moveTo(Point{int(ev.X), int(ev.Y)})
				}
			}
		}

		sdl.GL_SwapBuffers()
		sdl.Delay(25)
	}

	sdl.Quit()

}
Example #13
0
File: main.go Project: andrebq/glfw
func initGL() (err error) {
	if err = loadTextures(); err != nil {
		return
	}

	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
	gl.Enable(gl.DEPTH_TEST)
	gl.Enable(gl.TEXTURE_2D)
	return
}
Example #14
0
func loop() {
	e := initTriangleShaders()

	if e != nil {
		log.Fatalln(e.Error())
	}

	for esc {
		gl.ClearColor(0.0, 0.0, 0.0, 0.0)
		gl.Clear(gl.COLOR_BUFFER_BIT)
		drawTriangle()
		glfw.SwapBuffers()
		timeSince()
	}
}
Example #15
0
// general OpenGL initialization
func initGL() {
	gl.Enable(gl.TEXTURE_2D)
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0.0, 0.0, 0.0, 0.5)
	gl.ClearDepth(1.0)
	gl.Enable(gl.DEPTH_TEST)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)

	// Setup the light
	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, lightAmbient[:])   // ambient lighting
	gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, lightDiffuse[:])   // make it diffuse
	gl.Lightfv(gl.LIGHT1, gl.POSITION, lightPosition[:]) // and place it
	gl.Enable(gl.LIGHT1)                                 // and finally turn it on.

	gl.Color4f(1.0, 1.0, 1.0, 0.5)     // Full Brightness, 50% Alpha ( NEW )
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE) // Blending Function For Translucency Based On Source Alpha Value ( NEW )
}
Example #16
0
func InitUI() *UI {
	ui := &UI{
		running: false,
	}

	if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
		panic(sdl.GetError())
	}

	if ttf.Init() != 0 {
		panic(sdl.GetError())
	}

	ui.screen = sdl.SetVideoMode(300, 300, 32, sdl.OPENGL)

	if ui.screen == nil {
		panic("sdl error")
	}

	if gl.Init() != 0 {
		panic("gl error")
	}

	gl.MatrixMode(gl.PROJECTION)

	gl.Viewport(0, 0, int(ui.screen.W), int(ui.screen.H))
	gl.LoadIdentity()
	gl.Ortho(0, float64(ui.screen.W), float64(ui.screen.H), 0, -1.0, 1.0)

	gl.ClearColor(1, 1, 1, 0)
	gl.Clear(gl.COLOR_BUFFER_BIT)

	// TTF
	sdl.EnableUNICODE(1)
	ui.font = ttf.OpenFont("FontinSans.otf", 20)
	ui.font.SetStyle(ttf.STYLE_UNDERLINE)
	if ui.font == nil {
		panic(sdl.GetError())
	}

	ui.running = true

	return ui
}
Example #17
0
// general OpenGL initialization
func initGL() {
	LoadGLTextures("data/mud.bmp")

	gl.Enable(gl.TEXTURE_2D)
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0.0, 0.0, 0.0, 0.0)
	gl.ClearDepth(1.0)
	gl.Enable(gl.DEPTH_TEST)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)

	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, lightAmbient[:])
	gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, lightDiffuse[:])
	gl.Lightfv(gl.LIGHT1, gl.POSITION, lightPosition[:])
	gl.Enable(gl.LIGHT1)

	gl.Color4f(1.0, 1.0, 1.0, 0.5)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE)
}
Example #18
0
// general OpenGL initialization
func initGL() {
	// enable smooth shading
	gl.ShadeModel(gl.SMOOTH)

	// Set the background to black
	gl.ClearColor(0.0, 0.0, 0.0, 0.0)

	// Depth buffer setup
	gl.ClearDepth(1.0)

	// Enable depth testing
	gl.Enable(gl.DEPTH_TEST)

	// The type of test
	gl.DepthFunc(gl.LEQUAL)

	// Nicest perspective correction
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
}
Example #19
0
File: main.go Project: andrebq/glfw
func initGL() (err error) {
	if err = loadTextures(); err != nil {
		return
	}

	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
	gl.Enable(gl.DEPTH_TEST)
	gl.Enable(gl.TEXTURE_2D)

	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, ambient)
	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, diffuse)
	gl.Lightfv(gl.LIGHT1, gl.POSITION, lightpos)
	gl.Enable(gl.LIGHT1)
	return
}
Example #20
0
func setup_opengl(width, height int) {
	ratio := float64(width) / float64(height)
	gl.ShadeModel(gl.SMOOTH)
	gl.CullFace(gl.BACK)
	gl.FrontFace(gl.CCW)
	gl.Enable(gl.CULL_FACE)
	gl.ClearColor(0, 0, 0, 0)
	gl.Viewport(0, 0, width, height)
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()

	gluPerspective := func(fovy, aspect, zNear, zFar float64) {
		top := math.Tan(fovy*0.5) * zNear
		bottom := -top
		left := aspect * bottom
		right := -left
		gl.Frustum(left, right, bottom, top, zNear, zFar)
	}
	gluPerspective(60.0, ratio, 1.0, 1024.0)
}
Example #21
0
// general OpenGL initialization
func initGL() {
	gl.Enable(gl.TEXTURE_2D)
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0.0, 0.0, 0.0, 0.5)
	gl.ClearDepth(1.0)
	gl.Enable(gl.DEPTH_TEST)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)

	// Setup the light
	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, lightAmbient1[:])   // ambient lighting
	gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, lightDiffuse1[:])   // make it diffuse
	gl.Lightfv(gl.LIGHT1, gl.POSITION, lightPosition1[:]) // and place it
	gl.Enable(gl.LIGHT1)                                  // and finally turn it on.

	gl.Lightfv(gl.LIGHT2, gl.AMBIENT, lightAmbient2[:])   // ambient lighting
	gl.Lightfv(gl.LIGHT2, gl.DIFFUSE, lightDiffuse2[:])   // make it diffuse
	gl.Lightfv(gl.LIGHT2, gl.POSITION, lightPosition2[:]) // and place it
	gl.Enable(gl.LIGHT2)                                  // and finally turn it on.
}
Example #22
0
func initGL() {
	gl.ShadeModel(gl.SMOOTH)
	gl.ClearColor(0, 0, 0, 0)
	gl.ClearDepth(1)
	gl.Enable(gl.DEPTH_TEST)
	gl.DepthFunc(gl.LEQUAL)
	gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)

	globalState.light[0] = 0
	globalState.light[1] = 20
	globalState.light[2] = -10
	globalState.light[3] = 1

	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, []float32{1, 1, 1})
	gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, []float32{1, 1, 1})
	gl.Lightfv(gl.LIGHT1, gl.POSITION, globalState.light[:])
	gl.Enable(gl.LIGHT1)

	gl.Enable(gl.LIGHTING)
}
Example #23
0
func main() {
	runtime.LockOSThread()
	flag.Parse()
	buildPalette()
	sdl.Init(sdl.INIT_VIDEO)
	defer sdl.Quit()

	sdl.GL_SetAttribute(sdl.GL_SWAP_CONTROL, 1)

	if sdl.SetVideoMode(512, 512, 32, sdl.OPENGL) == nil {
		panic("sdl error")
	}

	if gl.Init() != 0 {
		panic("gl error")
	}

	sdl.WM_SetCaption("Gomandel", "Gomandel")

	gl.Enable(gl.TEXTURE_2D)
	gl.Viewport(0, 0, 512, 512)
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Ortho(0, 512, 512, 0, -1, 1)

	gl.ClearColor(0, 0, 0, 0)

	//-----------------------------------------------------------------------------
	var dndDragging bool = false
	var dndStart Point
	var dndEnd Point
	var tex gl.Texture
	var tc TexCoords
	var lastProgress int
	initialRect := Rect{-1.5, -1.5, 3, 3}
	rect := initialRect

	rc := new(MandelbrotRequest)
	rc.MakeRequest(512, 512, rect)
	rc.WaitFor(Small, &tex, &tc)

	running := true
	for running {
		for e := sdl.PollEvent(); e != nil; e = sdl.PollEvent() {
			switch e.(type) {
			case *sdl.QuitEvent:
				running = false
			case *sdl.MouseButtonEvent:
				mbe := e.(*sdl.MouseButtonEvent)
				if mbe.Type == sdl.MOUSEBUTTONDOWN {
					dndDragging = true
					sdl.GetMouseState(&dndStart.X, &dndStart.Y)
					dndEnd = dndStart
				} else {
					dndDragging = false
					sdl.GetMouseState(&dndEnd.X, &dndEnd.Y)
					if mbe.Which == 3 {
						rect = initialRect
					} else {
						rect = rectFromSelection(dndStart, dndEnd, 512, 512, rect)
						tc = texCoordsFromSelection(dndStart, dndEnd, 512, 512, tc)
					}

					// make request
					rc.MakeRequest(512, 512, rect)
				}
			case *sdl.MouseMotionEvent:
				if dndDragging {
					sdl.GetMouseState(&dndEnd.X, &dndEnd.Y)
				}
			}
		}

		// if we're waiting for a result, check if it's ready
		p := rc.Update(&tex, &tc)
		if p != -1 {
			lastProgress = p
		}

		gl.Clear(gl.COLOR_BUFFER_BIT)
		tex.Bind(gl.TEXTURE_2D)
		drawQuad(0, 0, 512, 512, tc.TX, tc.TY, tc.TX2, tc.TY2)
		gl.BindTexture(gl.TEXTURE_2D, 0)
		if dndDragging {
			drawSelection(dndStart, dndEnd)
		}
		drawProgress(512, 512, lastProgress, rc.Pending)
		sdl.GL_SwapBuffers()
	}
}
Example #24
0
func main() {
	w := 500
	h := 500
	fov := 45.0
	clip_min := 0.1
	clip_max := 1000.0

	aspect_ratio := float64(w) / float64(h)

	glfw.Init()
	glfw.OpenWindow(w, h, 8, 8, 8, 8, 8, 0, glfw.Windowed)

	glfw.SetWindowTitle("Shader Test")
	glfw.SetWindowSizeCallback(resize_window)
	glfw.SetKeyCallback(key_callback)

	gl.ClearColor(0.3, 0.3, 0.3, 1.0)
	gl.ShadeModel(gl.SMOOTH)

	size_window(w, h, fov, aspect_ratio, clip_min, clip_max)

	//Testing sprites
	test_sprite := sprite{height: 1.0, width: 1.0}
	test_sprite.tex = texture("./assets/hedge.gif")
	test_sprite.Y = 3

	new_guy := sprite{height: 0.5, width: 0.5}
	new_guy.tex = texture("./assets/red2.png")
	new_guy.Y = 5

	renderees := new(list.List)
	renderees.PushBack(&new_guy)
	renderees.PushBack(&test_sprite)

	my_camera.init(Vector{0.0, -1.0, 0.0})
	my_camera.front = Vector{0.0, 1.0, 0.0}
	my_camera.top = Vector{0.0, 0.0, 1.0}
	//End testing sprites

	physics_objects := new(list.List)
	physics_objects.PushBack(my_camera)

	dt, err := time.ParseDuration("16.67ms")
	if err != nil {
		die(err)
	}

	fmt.Println("Timestep: ", dt)
	var t float64 = 0
	running := true
	for running {
		t0 := time.Now()
		update(physics_objects, float64(dt.Nanoseconds())/1e6)
		t += 0.025
		new_guy.X = math.Cos(t)
		new_guy.Y = math.Sin(t) + 3.0

		//my_camera.point_at(Vector{new_guy.X, new_guy.Y, new_guy.Z})

		general_render(renderees, my_camera)
		glfw.SwapBuffers()

		dt = time.Since(t0)
		rate := time.Microsecond * 16670
		if dt < rate {
			time.Sleep((rate - dt))
			//fmt.Println("This frame took", float64(dt.Nanoseconds())/1000000, "ms to render.")
		}
		running = glfw.Key(glfw.KeyEsc) == 0 && glfw.WindowParam(glfw.Opened) != 0
	}
}
Example #25
0
File: gotris.go Project: nsf/gotris
func main() {
	runtime.LockOSThread()
	flag.Parse()
	sdl.Init(sdl.INIT_VIDEO)
	defer sdl.Quit()

	sdl.GL_SetAttribute(sdl.GL_SWAP_CONTROL, 1)

	if sdl.SetVideoMode(640, 480, 32, sdl.OPENGL) == nil {
		panic("sdl error")
	}

	sdl.WM_SetCaption("Gotris", "Gotris")
	sdl.EnableKeyRepeat(250, 45)

	gl.Enable(gl.TEXTURE_2D)
	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
	gl.Viewport(0, 0, 640, 480)
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Ortho(0, 640, 480, 0, -1, 1)

	gl.ClearColor(0, 0, 0, 0)

	//-----------------------------------------------------------------------------

	font, err := LoadFontFromFile("dejavu.font")
	if err != nil {
		panic(err)
	}

	rand.Seed(int64(sdl.GetTicks()))

	gs := NewGameSession(*initLevel, font)
	lastTime := sdl.GetTicks()
	ticker := time.NewTicker(10 * time.Millisecond)

	stop := make(chan byte, 1)
	go func() {
		for {
			switch e := (<-sdl.Events).(type) {
			case sdl.QuitEvent:
				stop <- 0
			case sdl.KeyboardEvent:
				if e.Type == sdl.KEYDOWN {
					running := gs.HandleKey(e.Keysym.Sym)
					if !running {
						stop <- 0
					}
					gs.update <- 0
				}
			}
		}
	}()
loop:
	for {
		select {
		case <-ticker.C:
			gs.update <- 0

		case <-gs.update:
			now := sdl.GetTicks()
			delta := now - lastTime
			lastTime = now

			gs.Update(delta)

			gl.Clear(gl.COLOR_BUFFER_BIT)
			font.Draw(5, 5, fmt.Sprintf("Level: %d | Score: %d", gs.Level, gs.Score))
			gs.Draw()
			gl.Color3ub(255, 255, 255)
			sdl.GL_SwapBuffers()

		case <-stop:
			break loop
		}
	}
}
Example #26
0
func main() {
	log.SetFlags(log.Lshortfile)

	//parse flags
	flag.Parse()

	if flags.cpuprofile != "" {
		f, err := os.Create(flags.cpuprofile)
		if err != nil {
			log.Fatal(err)
		}
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	loadSettingsFile()
	Settings.Paused = flags.startPaused

	if flags.buildExamples {
		allExamples()
		return
	}

	wx, wy := 800, 600

	//initialize opengl & glfw
	{
		//init glfw
		if err := glfw.Init(); err != nil {
			log.Printf("Error initializing glfw: %v\n", err)
			return
		}
		defer glfw.Terminate()

		//set window hints
		glfw.OpenWindowHint(glfw.WindowNoResize, 1)

		//create the window
		if err := glfw.OpenWindow(wx, wy, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil {
			log.Printf("Error opening Window: %v\n", err)
			return
		}
		defer glfw.CloseWindow()

		//init opengl
		if gl.Init() != 0 {
			panic("gl error")
		}

		//glfw config
		{
			glfw.SetSwapInterval(1)
			glfw.SetWindowTitle("mater test")
		}

		//set additional opengl stuff
		{
			gl.ClearColor(0, 0, 0, 0)
			gl.Enable(gl.BLEND)
			//gl.BlendFunc (gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
			gl.Enable(gl.TEXTURE_2D)
		}
	}

	//setup scene related stuff
	{
		//create empty space
		space = collision.NewSpace()
	}

	//reload settings so they take effect
	reloadSettings()
	saveSettingsFile()

	//set callbacks
	{
		glfw.SetWindowSizeCallback(OnResize)
		glfw.SetKeyCallback(OnKey)
	}

	//init debug console
	console.Init()

	//load savefile passed from the commandline if any
	if flags.file != "" {
		err := loadSpace(flags.file)
		Settings.Paused = true
		if err != nil {
			panic(err)
		}
	}

	//if set to true once a second
	printFPS := false

	//fix timestep to given fps
	const expectedFps = 30.0
	const expectedFrameTime = 1.0 / expectedFps

	//the time at the start of the last frame
	lastTime := 0.0

	acc := 0.0
	updateAcc := 0.0

	frameCount := 0
	updateFrameCount := 0

	fps := 0
	updateFps := 0

	Settings.Running = true

	for Settings.Running && glfw.WindowParam(glfw.Opened) == 1 {
		time := glfw.Time()
		//get the time elapsed since the last frame
		dt := time - lastTime
		lastTime = time

		//advance framecount and accumulators
		frameCount++
		acc += dt
		updateAcc += dt

		//execute console commands if any
		select {
		case command := <-console.Command:
			console.ExecuteCommand(command)
		default:
		}

		//update the scene at a fixed timestep
		for updateAcc >= expectedFrameTime {
			updateFrameCount++

			//if one second has passed update the fps and reset the framecount
			if acc > 1 {
				updateFps = updateFrameCount
				updateFrameCount = 0
			}

			//only update if not paused or if set to advance a single frame
			if !Settings.Paused || Settings.SingleStep {
				space.Step(expectedFrameTime)
				Settings.SingleStep = false
			}

			updateAcc -= expectedFrameTime
		}

		//draw debug data
		Draw()

		glfw.SwapBuffers()

		//if one second has passed update the fps and reset the framecount
		if acc > 1 {
			fps = frameCount
			frameCount = 0
			if printFPS {
				fmt.Printf("---\n")
				fmt.Printf("FPS: %v\n", fps)
				fmt.Printf("Update FPS: %v\n", updateFps)
				fmt.Printf("Average frametime: %v\n", acc/float64(fps))
				fmt.Printf("---\n")
			}
			acc -= 1
		}
	}
}
Example #27
0
func main() {
	runtime.LockOSThread()

	if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
		log.Fatal(sdl.GetError())
	}
	var screen = sdl.SetVideoMode(screenWidth, screenHeight, 32, sdl.OPENGL|sdl.HWSURFACE|sdl.GL_DOUBLEBUFFER|sdl.FULLSCREEN)
	if screen == nil {
		log.Fatal(sdl.GetError())
	}
	sdl.WM_SetCaption("Lecture Hall Games", "")
	sdl.EnableUNICODE(1)
	if gl.Init() != 0 {
		log.Fatal("could not initialize OpenGL")
	}
	gl.Viewport(0, 0, int(screen.W), int(screen.H))
	gl.ClearColor(1, 1, 1, 0)
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Ortho(0, float64(screen.W), float64(screen.H), 0, -1.0, 1.0)
	gl.Disable(gl.LIGHTING)
	gl.Disable(gl.DEPTH_TEST)
	gl.TexEnvi(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)

	if mixer.OpenAudio(mixer.DEFAULT_FREQUENCY, mixer.DEFAULT_FORMAT,
		mixer.DEFAULT_CHANNELS, 4096) != 0 {
		log.Fatal(sdl.GetError())
	}

	if ttf.Init() != 0 {
		log.Fatal(sdl.GetError())
	}

	if p, err := build.Default.Import(basePkg, "", build.FindOnly); err == nil {
		os.Chdir(p.Dir)
	}

	var err error

	rand.Seed(time.Now().UnixNano())
	levelDir := fmt.Sprintf("data/levels/demolevel%d", 3+rand.Intn(numberLevels))
	//carsDir := fmt.Sprintf(" data/cars/car%d/", 1+rand.Intn(numberCars))
	if game, err = NewRacer(levelDir); err != nil {
		log.Fatal(err)
	}

	go func() {
		listen, err := net.Listen("tcp", ":8001")
		if err != nil {
			log.Fatal(err)
		}
		for {
			conn, err := listen.Accept()
			if err != nil {
				log.Println(err)
				continue
			}
			go handleConnection(conn)
		}
	}()

	running := true
	last := time.Now()
	for running {
		select {
		case event := <-sdl.Events:
			switch e := event.(type) {
			case sdl.QuitEvent:
				running = false
			case sdl.ResizeEvent:
				screen = sdl.SetVideoMode(int(e.W), int(e.H), 32, sdl.RESIZABLE)
			case sdl.KeyboardEvent:
				if e.Type == sdl.KEYDOWN {
					if e.Keysym.Sym == sdl.K_ESCAPE {
						running = false
					} else {
						game.KeyPressed(e.Keysym)
					}
				}
			}
		default:
		}

		current := time.Now()
		t := current.Sub(last)
		last = current

		mu.Lock()
		game.Update(t)
		game.Render(screen)
		mu.Unlock()

		sdl.GL_SwapBuffers()
	}

	sdl.Quit()
}