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()
}
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()
}
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()
}
}
// 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
}
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()
}
}
}
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)
}
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)
}
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()
}
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)
}
// 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)
}
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()
}
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()
}
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
}
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()
}
}
// 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 )
}
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
}
// 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)
}
// 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)
}
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
}
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)
}
// 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.
}
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)
}
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()
}
}
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
}
}
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
}
}
}
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
}
}
}
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()
}