func loadImage(path string) *sdl.Surface {
loaded := sdl.Load(path)
if loaded == nil {
panic(sdl.GetError())
}
defer loaded.Free()
return sdl.DisplayFormat(loaded)
}
func loadImage(name string) *sdl.Surface {
image := sdl.Load(name)
if image == nil {
panic(sdl.GetError())
}
return image
}
// Load bitmap from path as GL texture
func LoadGLTexture(path string) {
image := sdl.Load(path)
if image == nil {
panic(sdl.GetError())
}
// Check that the image's width is a power of 2
if image.W&(image.W-1) != 0 {
fmt.Println("warning:", path, "has a width that is not a power of 2")
}
// Also check if the height is a power of 2
if image.H&(image.H-1) != 0 {
fmt.Println("warning:", path, "has an height that is not a power of 2")
}
// get the number of channels in the SDL surface
nOfColors := image.Format.BytesPerPixel
var textureFormat gl.GLenum
if nOfColors == 4 { // contains alpha channel
if image.Format.Rmask == 0x000000ff {
textureFormat = gl.RGBA
} else {
textureFormat = gl.BGRA
}
} else if nOfColors == 3 { // no alpha channel
if image.Format.Rmask == 0x000000ff {
textureFormat = gl.RGB
} else {
textureFormat = gl.BGR
}
} else {
fmt.Println("warning:", path, "is not truecolor, this will probably break")
}
texture = gl.GenTexture()
// Typical texture generation using data from the bitmap
gl.BindTexture(gl.TEXTURE_2D, uint(texture))
// Generate the texture
gl.TexImage2D(gl.TEXTURE_2D, 0, int(image.Format.BytesPerPixel),
int(image.W), int(image.H),
0, textureFormat, gl.UNSIGNED_BYTE, image.Pixels,
)
// linear filtering
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
// free up memory we have used.
image.Free()
}
func LoadImage(path string) (image *sdl.Surface, format gl.GLenum) {
image = sdl.Load(path)
if image == nil {
panic(sdl.GetError())
}
// Check that the image's width is a power of 2
if image.W&(image.W-1) != 0 {
fmt.Println("warning:", path, "has a width that is not a power of 2")
}
// Also check if the height is a power of 2
if image.H&(image.H-1) != 0 {
fmt.Println("warning:", path, "has an height that is not a power of 2")
}
// get the number of channels in the SDL surface
nOfColors := image.Format.BytesPerPixel
if nOfColors == 4 { // contains alpha channel
if image.Format.Rmask == 0x000000ff {
format = gl.RGBA
} else {
format = gl.BGRA
}
} else if nOfColors == 3 { // no alpha channel
if image.Format.Rmask == 0x000000ff {
format = gl.RGB
} else {
format = gl.BGR
}
} else {
fmt.Println("warning:", path, "is not truecolor, this will probably break")
}
return image, format
}
func main() {
sdl.Init(sdl.INIT_VIDEO)
screen := sdl.SetVideoMode(640, 480, 32, 0)
image := sdl.Load("../icon.bmp")
image.SetColorKey(sdl.RLEACCEL|sdl.SRCCOLORKEY, image.MapRGB(255, 255, 255))
x := make([]int16, NUM_SPRITES)
y := make([]int16, NUM_SPRITES)
vx := make([]int16, NUM_SPRITES)
vy := make([]int16, NUM_SPRITES)
rg := rand.New(rand.NewSource(0))
for i := 0; i < NUM_SPRITES; i++ {
//x[i] = rg.Intn(screen.w - image.w);
//y[i] = rg.Intn(screen.h - image.h);
x[i] = int16(rg.Intn(W))
y[i] = int16(rg.Intn(H))
vx[i] = 0
vy[i] = 0
for vx[i] == 0 && vy[i] == 0 {
vx[i] = int16(rg.Intn(3) - 1)
vy[i] = int16(rg.Intn(3) - 1)
}
}
t := 0
running := true
start := sdl.GetTicks()
//rect := sdl.Rect{ 0, 0, 0, 0 };
//rectp := ▭
for running {
t++
e := &sdl.Event{}
for e.Poll() {
switch e.Type {
case sdl.QUIT:
running = false
case sdl.KEYDOWN:
if e.Keyboard().Keysym.Sym == sdl.K_ESCAPE {
running = false
}
}
}
screen.FillRect(nil, 0)
for i := 0; i < NUM_SPRITES; i++ {
x[i] += vx[i]
y[i] += vy[i]
if x[i] < 0 || x[i] >= W {
vx[i] = -vx[i]
x[i] += vx[i]
}
if y[i] < 0 || y[i] >= H {
vy[i] = -vy[i]
y[i] += vy[i]
}
//rect.X = x[i];
//rect.Y = y[i];
//screen.Blit(rectp, image, nil);
screen.Blit(&sdl.Rect{x[i], y[i], 0, 0}, image, nil)
}
screen.Flip()
}
elapsed := sdl.GetTicks() - start
fmt.Printf("%f\n", float(t)/float(elapsed)*1000.0)
image.Free()
screen.Free()
sdl.Quit()
}
func main() {
if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
panic(sdl.GetError())
}
if ttf.Init() != 0 {
panic(sdl.GetError())
}
if mixer.OpenAudio(mixer.DEFAULT_FREQUENCY, mixer.DEFAULT_FORMAT,
mixer.DEFAULT_CHANNELS, 4096) != 0 {
panic(sdl.GetError())
}
var screen = sdl.SetVideoMode(640, 480, 32, sdl.RESIZABLE)
if screen == nil {
panic(sdl.GetError())
}
var video_info = sdl.GetVideoInfo()
println("HW_available = ", video_info.HW_available)
println("WM_available = ", video_info.WM_available)
println("Video_mem = ", video_info.Video_mem, "kb")
sdl.EnableUNICODE(1)
sdl.WM_SetCaption("Go-SDL SDL Test", "")
image := sdl.Load("test.png")
if image == nil {
panic(sdl.GetError())
}
sdl.WM_SetIcon(image, nil)
running := true
font := ttf.OpenFont("Fontin Sans.otf", 72)
if font == nil {
panic(sdl.GetError())
}
font.SetStyle(ttf.STYLE_UNDERLINE)
white := sdl.Color{255, 255, 255, 0}
text := ttf.RenderText_Blended(font, "Test (with music)", white)
music := mixer.LoadMUS("test.ogg")
sound := mixer.LoadWAV("sound.ogg")
if music == nil || sound == nil {
panic(sdl.GetError())
}
music.PlayMusic(-1)
if sdl.GetKeyName(270) != "[+]" {
panic("GetKeyName broken")
}
worm_in := make(chan Point)
draw := make(chan Point, 64)
var out chan Point
var in chan Point
out = worm_in
in = out
out = make(chan Point)
go worm(in, out, draw)
for running {
for ev := sdl.PollEvent(); ev != nil; ev = sdl.PollEvent() {
switch e := ev.(type) {
case *sdl.QuitEvent:
running = false
break
case *sdl.KeyboardEvent:
println("")
println(e.Keysym.Sym, ": ", sdl.GetKeyName(sdl.Key(e.Keysym.Sym)))
if e.Keysym.Sym == 27 {
running = false
}
fmt.Printf("%04x ", e.Type)
for i := 0; i < len(e.Pad0); i++ {
fmt.Printf("%02x ", e.Pad0[i])
}
println()
fmt.Printf("Type: %02x Which: %02x State: %02x Pad: %02x\n", e.Type, e.Which, e.State, e.Pad0[0])
fmt.Printf("Scancode: %02x Sym: %08x Mod: %04x Unicode: %04x\n", e.Keysym.Scancode, e.Keysym.Sym, e.Keysym.Mod, e.Keysym.Unicode)
case *sdl.MouseButtonEvent:
if e.Type == sdl.MOUSEBUTTONDOWN {
println("Click:", e.X, e.Y)
in = out
out = make(chan Point)
go worm(in, out, draw)
sound.PlayChannel(-1, 0)
}
case *sdl.ResizeEvent:
println("resize screen ", e.W, e.H)
screen = sdl.SetVideoMode(int(e.W), int(e.H), 32, sdl.RESIZABLE)
if screen == nil {
panic(sdl.GetError())
}
}
}
screen.FillRect(nil, 0x302019)
screen.Blit(&sdl.Rect{0, 0, 0, 0}, text, nil)
loop := true
for loop {
select {
case p := <-draw:
screen.Blit(&sdl.Rect{int16(p.x), int16(p.y), 0, 0}, image, nil)
case <-out:
default:
loop = false
}
}
var p Point
sdl.GetMouseState(&p.x, &p.y)
worm_in <- p
screen.Flip()
sdl.Delay(25)
}
image.Free()
music.Free()
font.Close()
ttf.Quit()
sdl.Quit()
}
// load in bitmap as a GL texture
func LoadGLTextures(path string) {
image := sdl.Load(path)
if image == nil {
panic(sdl.GetError())
}
// Check that the image's width is a power of 2
if image.W&(image.W-1) != 0 {
fmt.Println("warning:", path, "has a width that is not a power of 2")
}
// Also check if the height is a power of 2
if image.H&(image.H-1) != 0 {
fmt.Println("warning:", path, "has an height that is not a power of 2")
}
// get the number of channels in the SDL surface
nOfColors := image.Format.BytesPerPixel
var textureFormat gl.GLenum
if nOfColors == 4 { // contains alpha channel
if image.Format.Rmask == 0x000000ff {
textureFormat = gl.RGBA
} else {
textureFormat = gl.BGRA
}
} else if nOfColors == 3 { // no alpha channel
if image.Format.Rmask == 0x000000ff {
textureFormat = gl.RGB
} else {
textureFormat = gl.BGR
}
} else {
fmt.Println("warning:", path, "is not truecolor, this will probably break")
}
// Create the textures
gl.GenTextures(textures[:])
// First texture
gl.BindTexture(gl.TEXTURE_2D, uint(textures[0]))
gl.TexImage2D(
gl.TEXTURE_2D,
0,
3,
int(image.W),
int(image.H),
0,
textureFormat,
gl.UNSIGNED_BYTE,
image.Pixels,
)
// linear filtering
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
// Second texture
gl.BindTexture(gl.TEXTURE_2D, uint(textures[1]))
gl.TexImage2D(gl.TEXTURE_2D, 0,
3,
int(image.W),
int(image.H),
0, textureFormat, gl.UNSIGNED_BYTE,
image.Pixels,
)
// Mipmapped filtering
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
// Third texture
gl.BindTexture(gl.TEXTURE_2D, uint(textures[2]))
gl.TexImage2D(gl.TEXTURE_2D, 0,
3,
int(image.W),
int(image.H),
0, textureFormat, gl.UNSIGNED_BYTE,
image.Pixels,
)
// Mipmapped filtering
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
glu.Build2DMipmaps(
gl.TEXTURE_2D,
3,
int(image.W),
int(image.H),
textureFormat,
image.Pixels,
)
}