func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
var peepArray []sdl.Event = make([]sdl.Event, 5)
running = true
for running {
sdl.PumpEvents()
numEventsRetrieved := sdl.PeepEvents(peepArray, sdl.PEEKEVENT, sdl.FIRSTEVENT, sdl.LASTEVENT)
if numEventsRetrieved < 0 {
fmt.Printf("PeepEvents error: %s\n", sdl.GetError())
} else {
for i := 0; i < numEventsRetrieved; i++ {
fmt.Printf("Event Peeked Value: %v\n", peepArray[i]) // primitive printing of event
}
}
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
}
}
sdl.Delay(1000 / 30)
}
renderer.Destroy()
window.Destroy()
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var points []sdl.Point
var rect sdl.Rect
var rects []sdl.Rect
window, err := sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
renderer.Clear()
renderer.SetDrawColor(255, 255, 255, 255)
renderer.DrawPoint(150, 300)
renderer.SetDrawColor(0, 0, 255, 255)
renderer.DrawLine(0, 0, 200, 200)
points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
renderer.SetDrawColor(255, 255, 0, 255)
renderer.DrawLines(points)
rect = sdl.Rect{300, 0, 200, 200}
renderer.SetDrawColor(255, 0, 0, 255)
renderer.DrawRect(&rect)
rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
renderer.SetDrawColor(0, 255, 255, 255)
renderer.DrawRects(rects)
rect = sdl.Rect{250, 250, 200, 200}
renderer.SetDrawColor(0, 255, 0, 255)
renderer.FillRect(&rect)
rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
renderer.SetDrawColor(255, 0, 255, 255)
renderer.FillRects(rects)
renderer.Present()
sdl.Delay(2000)
return 0
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var points []sdl.Point
var rect sdl.Rect
var rects []sdl.Rect
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
renderer.SetDrawColor(255, 255, 255, 255)
renderer.DrawPoint(150, 300)
renderer.SetDrawColor(0, 0, 255, 255)
renderer.DrawLine(0, 0, 200, 200)
points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
renderer.SetDrawColor(255, 255, 0, 255)
renderer.DrawLines(points)
rect = sdl.Rect{300, 0, 200, 200}
renderer.SetDrawColor(255, 0, 0, 255)
renderer.DrawRect(&rect)
rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
renderer.SetDrawColor(0, 255, 255, 255)
renderer.DrawRects(rects)
rect = sdl.Rect{250, 250, 200, 200}
renderer.SetDrawColor(0, 255, 0, 255)
renderer.FillRect(&rect)
rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
renderer.SetDrawColor(255, 0, 255, 255)
renderer.FillRects(rects)
renderer.Present()
sdl.Delay(2000)
renderer.Destroy()
window.Destroy()
}
func main() {
var winTitle string = "Go-SDL2 + Go-GL"
var winWidth, winHeight int = 800, 600
var window *sdl.Window
var context sdl.GLContext
var event sdl.Event
var running bool
var err error
if err = sdl.Init(sdl.INIT_EVERYTHING); err != nil {
panic(err)
}
defer sdl.Quit()
if err = gl.Init(); err != nil {
panic(err)
}
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_OPENGL)
if err != nil {
panic(err)
}
defer window.Destroy()
context, err = sdl.GL_CreateContext(window)
if err != nil {
panic(err)
}
defer sdl.GL_DeleteContext(context)
gl.Enable(gl.DEPTH_TEST)
gl.ClearColor(0.2, 0.2, 0.3, 1.0)
gl.ClearDepth(1)
gl.DepthFunc(gl.LEQUAL)
gl.Viewport(0, 0, int32(winWidth), int32(winHeight))
running = true
for running {
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n", t.Timestamp, t.Which, t.X, t.Y, t.XRel, t.YRel)
}
}
drawgl()
sdl.GL_SwapWindow(window)
}
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var texture *sdl.Texture
var src, dst sdl.Rect
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
image, err := img.Load(imageName)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
return 3
}
defer image.Free()
texture, err = renderer.CreateTextureFromSurface(image)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
return 4
}
defer texture.Destroy()
src = sdl.Rect{0, 0, 512, 512}
dst = sdl.Rect{100, 50, 512, 512}
renderer.Clear()
renderer.SetDrawColor(255, 0, 0, 255)
renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)})
renderer.Copy(texture, &src, &dst)
renderer.Present()
sdl.Delay(2000)
return 0
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
running = true
for running {
event = sdl.WaitEventTimeout(1000) // wait here until an event is in the event queue
if event == nil {
fmt.Println("WaitEventTimeout timed out")
continue
}
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
}
}
renderer.Destroy()
window.Destroy()
}
func run() int {
var window *sdl.Window
var font *ttf.Font
var surface *sdl.Surface
var solid *sdl.Surface
var err error
sdl.Init(sdl.INIT_VIDEO)
if err := ttf.Init(); err != nil {
fmt.Fprintf(os.Stderr, "Failed to initialize TTF: %s\n", err)
return 1
}
if window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, winWidth, winHeight, sdl.WINDOW_SHOWN); err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 2
}
defer window.Destroy()
if font, err = ttf.OpenFont("../../assets/test.ttf", 32); err != nil {
fmt.Fprint(os.Stderr, "Failed to open font: %s\n", err)
return 4
}
defer font.Close()
if solid, err = font.RenderUTF8_Solid("Hello, World!", sdl.Color{255, 0, 0, 255}); err != nil {
fmt.Fprint(os.Stderr, "Failed to render text: %s\n", err)
return 5
}
defer solid.Free()
if surface, err = window.GetSurface(); err != nil {
fmt.Fprint(os.Stderr, "Failed to get window surface: %s\n", err)
return 6
}
if err = solid.Blit(nil, surface, nil); err != nil {
fmt.Fprint(os.Stderr, "Failed to put text on window surface: %s\n", err)
return 7
}
// Show the pixels for a while
window.UpdateSurface()
sdl.Delay(3000)
return 0
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var texture *sdl.Texture
var src, dst sdl.Rect
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
image := img.Load(imageName)
if image == nil {
fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", sdl.GetError())
os.Exit(3)
}
texture = renderer.CreateTextureFromSurface(image)
if texture == nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", sdl.GetError())
os.Exit(4)
}
src = sdl.Rect{0, 0, 512, 512}
dst = sdl.Rect{100, 50, 512, 512}
renderer.Clear()
renderer.SetDrawColor(255, 0, 0, 255)
renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)})
renderer.Copy(texture, &src, &dst)
renderer.Present()
sdl.Delay(2000)
image.Free()
texture.Destroy()
renderer.Destroy()
window.Destroy()
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var image *sdl.Surface
var texture *sdl.Texture
var src, dst sdl.Rect
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
os.Exit(1)
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
os.Exit(2)
}
defer renderer.Destroy()
image, err = sdl.LoadBMP(imageName)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load BMP: %s\n", err)
os.Exit(3)
}
defer image.Free()
texture, err = renderer.CreateTextureFromSurface(image)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
os.Exit(4)
}
defer texture.Destroy()
src = sdl.Rect{0, 0, 512, 512}
dst = sdl.Rect{100, 50, 512, 512}
renderer.Clear()
renderer.Copy(texture, &src, &dst)
renderer.Present()
sdl.Delay(2000)
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
running = true
for running {
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
}
}
}
return 0
}
// DestroyWindow closes the window, freeing any resources as it does so.
// It must be called for each window that has been created before the program
// exists.
//
// DestroyWindow will panic if:
//
// 1. The toolbox has not been initialised.
//
// 2. The window is invalid
//
// 3. CreateWindow has not been called.
func DestroyWindow(window Window) {
if !initialised {
// this stops execution here, so ne need for an else after the if
panic(notInitialisedMessage)
}
if renderer == nil {
// this stops execution here, so ne need for an else after the if
panic(windowNotInitialisedMessage)
}
if window == nil {
panic("The Window is invalid. Have you used toolbox.CreateWindow(...)?")
}
var w *sdl.Window
w = window
if renderer != nil { // should always be true - see createWindow - but be defensive
renderer.Destroy()
}
w.Destroy()
}
// Create the graphics window using the SDl library or crash trying
func createWindow(w, h int, title string) *sdl.Window {
var window *sdl.Window
var err error
window, err = sdl.CreateWindow(title, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
w, h, sdl.WINDOW_SHOWN)
if err != nil {
panic(err)
}
// we're all good to create the renderer....
renderer, err = createRenderer(window)
if err != nil {
// Oops, we failed to create the renderer failed
// cleanup the window before we panic
window.Destroy()
panic(err)
}
// at this point we have both a good renderer and a good window
return window
}
func main() {
var (
err error
window *sdl.Window
context sdl.GLContext
)
if err = sdl.Init(sdl.INIT_EVERYTHING); err != nil {
panic(err)
}
defer sdl.Quit()
sdl.GL_SetAttribute(sdl.GL_CONTEXT_MAJOR_VERSION, 3)
sdl.GL_SetAttribute(sdl.GL_CONTEXT_MINOR_VERSION, 2)
sdl.GL_SetAttribute(sdl.GL_CONTEXT_PROFILE_MASK, sdl.GL_CONTEXT_PROFILE_CORE)
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, winWidth, winHeight, sdl.WINDOW_OPENGL)
if err != nil {
panic(err)
}
defer window.Destroy()
context, err = sdl.GL_CreateContext(window)
if err != nil {
panic(err)
}
defer sdl.GL_DeleteContext(context)
if err = sdl.GL_MakeCurrent(window, context); err != nil {
panic(err)
}
if err = gl.Init(); err != nil {
panic(err)
}
printGLInfo()
cameraMatrixUniform := setupGL()
windowLoop(window, cameraMatrixUniform)
}
func main() {
var window *sdl.Window
var info sdl.SysWMInfo
var subsystem string
var err error
window, err = sdl.CreateWindow("", 0, 0, 0, 0, sdl.WINDOW_HIDDEN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
os.Exit(1)
}
defer window.Destroy()
sdl.VERSION(&info.Version)
if window.GetWMInfo(&info) {
switch info.Subsystem {
case sdl.SYSWM_UNKNOWN:
subsystem = "An unknown system!"
case sdl.SYSWM_WINDOWS:
subsystem = "Microsoft Windows(TM)"
case sdl.SYSWM_X11:
subsystem = "X Window System"
case sdl.SYSWM_DIRECTFB:
subsystem = "DirectFB"
case sdl.SYSWM_COCOA:
subsystem = "Apple OS X"
case sdl.SYSWM_UIKIT:
subsystem = "UIKit"
}
fmt.Printf("This program is running SDL version %d.%d.%d on %s\n",
info.Version.Major,
info.Version.Minor,
info.Version.Patch,
subsystem)
} else {
fmt.Fprintf(os.Stderr, "Couldn't get window information: %s\n", sdl.GetError())
}
}
func main() {
var (
err error
window *sdl.Window
context sdl.GLContext
)
if err = sdl.Init(sdl.INIT_EVERYTHING); err != nil {
panic(err)
}
defer sdl.Quit()
sdl.GL_SetAttribute(sdl.GL_CONTEXT_PROFILE_MASK, sdl.GL_CONTEXT_PROFILE_COMPATIBILITY)
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, winWidth, winHeight, sdl.WINDOW_OPENGL)
if err != nil {
panic(err)
}
defer window.Destroy()
context, err = sdl.GL_CreateContext(window)
if err != nil {
panic(err)
}
defer sdl.GL_DeleteContext(context)
if err = sdl.GL_MakeCurrent(window, context); err != nil {
panic(err)
}
if err = gl.Init(); err != nil {
panic(err)
}
sdl.GL_SetSwapInterval(1)
printGLInfo()
setupGL()
windowLoop(window)
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
sdl.Init(sdl.INIT_EVERYTHING)
window = createWindow(winTitle, winHeight, winWidth)
defer window.Destroy()
renderer = createRenderer(window)
defer renderer.Destroy()
var secTickChan = time.Tick(time.Second)
var events = &Events{}
var fps = 0
var view = NewGameView()
for {
// Pump events
events.GetEvents()
// Pass events and renderer to view
view.Render(renderer, events)
// This structure logs the fps
select {
case <-secTickChan:
log.Println("fps:", fps)
fps = 0
default:
fps++
}
// Delay the next frame rendering to free up CPU
sdl.Delay(13)
}
}
func play(seq *video.VideoSequence) {
var window *sdl.Window
var renderer *sdl.Renderer
var texture *sdl.Texture
var err error
window, err = sdl.CreateWindow(winTitle,
sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight,
sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
os.Exit(1)
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
os.Exit(2)
}
defer renderer.Destroy()
seq.AlignTo(video.SequenceHeaderStartCode)
var pointer unsafe.Pointer
var pitch int
var yLen int
var cLen int
sdl.Delay(1000)
renderer.Present()
for {
img, err := seq.Next()
if err == io.EOF {
break
}
if err != nil {
fmt.Fprintf(os.Stderr, "Decoding error: %s\n", err)
os.Exit(3)
}
if texture == nil {
w, h := seq.Size()
yLen = w * h
cLen = (w * h) >> 2
texture, err = renderer.CreateTexture(sdl.PIXELFORMAT_IYUV, sdl.TEXTUREACCESS_STREAMING, w, h)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
os.Exit(4)
}
defer texture.Destroy()
}
{
texture.Lock(nil, &pointer, &pitch)
// Convert pointer to []uint8
pixels := *(*[]uint8)(unsafe.Pointer(&reflect.SliceHeader{
Data: uintptr(pointer),
Len: yLen + 2*cLen,
Cap: yLen + 2*cLen,
}))
// Select color planes
y := pixels[0:yLen]
cb := pixels[yLen : yLen+cLen]
cr := pixels[yLen+cLen : yLen+cLen+cLen]
// Copy image data into texture
copy(y, img.Y)
copy(cb, img.Cb)
copy(cr, img.Cr)
texture.Unlock()
}
err = renderer.Copy(texture, nil, nil)
if err != nil {
fmt.Fprintf(os.Stderr, "Copy failed: %s\n", err)
os.Exit(5)
}
renderer.Present()
}
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
var peepArray []sdl.Event = make([]sdl.Event, 2)
peepArray[0] = &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 1331, nil, nil}
peepArray[1] = &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 10101, nil, nil}
running = true
lastPushTime := sdl.GetTicks()
for running {
if lastPushTime+pushTime < sdl.GetTicks() {
lastPushTime = sdl.GetTicks()
sdl.PumpEvents()
numEventsHandled := sdl.PeepEvents(peepArray, sdl.ADDEVENT, sdl.FIRSTEVENT, sdl.LASTEVENT)
if numEventsHandled < 0 {
fmt.Printf("PeepEvents error: %s\n", sdl.GetError())
} else {
fmt.Printf("Successful push of %d events\n", numEventsHandled)
}
}
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
case *sdl.UserEvent:
fmt.Printf("[%d ms] UserEvent\tcode:%d\n", t.Timestamp, t.Code)
}
}
sdl.Delay(1000 / 30)
}
renderer.Destroy()
window.Destroy()
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var err error
sdl.Do(func() {
window, err = sdl.CreateWindow(WindowTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, WindowWidth, WindowHeight, sdl.WINDOW_OPENGL)
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer func() {
sdl.Do(func() {
window.Destroy()
})
}()
sdl.Do(func() {
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
})
if err != nil {
fmt.Fprint(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer func() {
sdl.Do(func() {
renderer.Destroy()
})
}()
sdl.Do(func() {
renderer.Clear()
})
for i := range rects {
rects[i] = sdl.Rect{
X: int32(rand.Int() % WindowWidth),
Y: int32(i * WindowHeight / len(rects)),
W: RectWidth,
H: RectHeight,
}
}
running := true
for running {
sdl.Do(func() {
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch event.(type) {
case *sdl.QuitEvent:
runningMutex.Lock()
running = false
runningMutex.Unlock()
}
}
renderer.Clear()
renderer.SetDrawColor(0, 0, 0, 0x20)
renderer.FillRect(&sdl.Rect{0, 0, WindowWidth, WindowHeight})
})
// Do expensive stuff using goroutines
wg := sync.WaitGroup{}
for i := range rects {
wg.Add(1)
go func(i int) {
rects[i].X = (rects[i].X + 10) % WindowWidth
sdl.Do(func() {
renderer.SetDrawColor(0xff, 0xff, 0xff, 0xff)
renderer.DrawRect(&rects[i])
})
wg.Done()
}(i)
}
wg.Wait()
sdl.Do(func() {
renderer.Present()
sdl.Delay(1000 / FrameRate)
})
}
return 0
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var points []sdl.Point
var rect sdl.Rect
var rects []sdl.Rect
var err error
sdl.Do(func() {
window, err = sdl.CreateWindow(WindowTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, WindowWidth, WindowHeight, sdl.WINDOW_SHOWN)
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer func() {
sdl.Do(func() {
window.Destroy()
})
}()
sdl.Do(func() {
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
})
if err != nil {
fmt.Fprint(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
sdl.Do(func() {
renderer.Clear()
})
defer func() {
sdl.Do(func() {
renderer.Destroy()
})
}()
go func() {
println("goroutine: A")
}()
sdl.Do(func() {
renderer.SetDrawColor(255, 255, 255, 255)
renderer.DrawPoint(150, 300)
println("queue: A")
})
go func() {
println("goroutine: B")
}()
sdl.Do(func() {
renderer.SetDrawColor(0, 0, 255, 255)
renderer.DrawLine(0, 0, 200, 200)
println("queue: B")
})
go func() {
println("goroutine: C")
}()
sdl.Do(func() {
points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
renderer.SetDrawColor(255, 255, 0, 255)
renderer.DrawLines(points)
println("queue: C")
})
go func() {
println("goroutine: D")
}()
sdl.Do(func() {
rect = sdl.Rect{300, 0, 200, 200}
renderer.SetDrawColor(255, 0, 0, 255)
renderer.DrawRect(&rect)
println("queue: D")
})
go func() {
println("goroutine: E")
}()
sdl.Do(func() {
rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
renderer.SetDrawColor(0, 255, 255, 255)
renderer.DrawRects(rects)
println("queue: E")
})
go func() {
println("goroutine: F")
}()
sdl.Do(func() {
rect = sdl.Rect{250, 250, 200, 200}
renderer.SetDrawColor(0, 255, 0, 255)
renderer.FillRect(&rect)
println("queue: F")
})
go func() {
println("goroutine: G")
}()
sdl.Do(func() {
rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
renderer.SetDrawColor(255, 0, 255, 255)
renderer.FillRects(rects)
println("queue: G")
})
go func() {
println("goroutine: H")
}()
sdl.Do(func() {
renderer.Present()
println("queue: H")
})
sdl.Do(func() {
sdl.Delay(2000)
})
return 0
}
func run() int {
var window *sdl.Window
var event sdl.Event
var running bool
var err error
sdl.Init(sdl.INIT_EVERYTHING)
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
sdl.JoystickEventState(sdl.ENABLE)
running = true
for running {
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyDownEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
case *sdl.JoyAxisEvent:
fmt.Printf("[%d ms] JoyAxis\ttype:%d\twhich:%c\taxis:%d\tvalue:%d\n",
t.Timestamp, t.Type, t.Which, t.Axis, t.Value)
case *sdl.JoyBallEvent:
fmt.Printf("[%d ms] JoyBall\ttype:%d\twhich:%d\tball:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.Ball, t.XRel, t.YRel)
case *sdl.JoyButtonEvent:
fmt.Printf("[%d ms] JoyButton\ttype:%d\twhich:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.Button, t.State)
case *sdl.JoyHatEvent:
fmt.Printf("[%d ms] JoyHat\ttype:%d\twhich:%d\that:%d\tvalue:%d\n",
t.Timestamp, t.Type, t.Which, t.Hat, t.Value)
case *sdl.JoyDeviceEvent:
if t.Type == sdl.JOYDEVICEADDED {
joysticks[int(t.Which)] = sdl.JoystickOpen(t.Which)
if joysticks[int(t.Which)] != nil {
fmt.Printf("Joystick %d connected\n", t.Which)
}
} else if t.Type == sdl.JOYDEVICEREMOVED {
if joystick := joysticks[int(t.Which)]; joystick != nil {
joystick.Close()
}
fmt.Printf("Joystick %d disconnected\n", t.Which)
}
default:
fmt.Printf("Some event\n")
}
}
}
sdl.Quit()
return 0
}
func main() {
var window *sdl.Window
var context sdl.GLContext
var event sdl.Event
var running bool
var err error
runtime.LockOSThread()
if err = sdl.Init(sdl.INIT_EVERYTHING); err != nil {
panic(err)
}
defer sdl.Quit()
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED,
sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_OPENGL)
if err != nil {
panic(err)
}
defer window.Destroy()
context, err = sdl.GL_CreateContext(window)
if err != nil {
panic(err)
}
defer sdl.GL_DeleteContext(context)
gl.Init()
gl.Viewport(0, 0, gl.Sizei(winWidth), gl.Sizei(winHeight))
// OPENGL FLAGS
gl.ClearColor(0.0, 0.1, 0.0, 1.0)
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// VERTEX BUFFER
var vertexbuffer gl.Uint
gl.GenBuffers(1, &vertexbuffer)
gl.BindBuffer(gl.ARRAY_BUFFER, vertexbuffer)
gl.BufferData(gl.ARRAY_BUFFER, gl.Sizeiptr(len(triangle_vertices)*4), gl.Pointer(&triangle_vertices[0]), gl.STATIC_DRAW)
// COLOUR BUFFER
var colourbuffer gl.Uint
gl.GenBuffers(1, &colourbuffer)
gl.BindBuffer(gl.ARRAY_BUFFER, colourbuffer)
gl.BufferData(gl.ARRAY_BUFFER, gl.Sizeiptr(len(triangle_colours)*4), gl.Pointer(&triangle_colours[0]), gl.STATIC_DRAW)
// GUESS WHAT
program := createprogram()
// VERTEX ARRAY
var VertexArrayID gl.Uint
gl.GenVertexArrays(1, &VertexArrayID)
gl.BindVertexArray(VertexArrayID)
gl.EnableVertexAttribArray(0)
gl.BindBuffer(gl.ARRAY_BUFFER, vertexbuffer)
gl.VertexAttribPointer(0, 3, gl.FLOAT, gl.FALSE, 0, nil)
// VERTEX ARRAY HOOK COLOURS
gl.EnableVertexAttribArray(1)
gl.BindBuffer(gl.ARRAY_BUFFER, colourbuffer)
gl.VertexAttribPointer(1, 3, gl.FLOAT, gl.FALSE, 0, nil)
//UNIFORM HOOK
unistring := gl.GLString("scaleMove")
UniScale = gl.GetUniformLocation(program, unistring)
fmt.Printf("Uniform Link: %v\n", UniScale+1)
gl.UseProgram(program)
running = true
for running {
for event = sdl.PollEvent(); event != nil; event =
sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
xrot = float32(t.Y) / 2
yrot = float32(t.X) / 2
fmt.Printf("[%dms]MouseMotion\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n", t.Timestamp, t.Which, t.X, t.Y, t.XRel, t.YRel)
}
}
drawgl()
sdl.GL_SwapWindow(window)
}
}
// Initialize
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var err error
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
int(winWidth), int(winHeight), sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
os.Exit(1)
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
os.Exit(2)
}
defer renderer.Destroy()
tilesetImg, err := img.Load("assets/textures/ts1.png")
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
os.Exit(3)
}
defer tilesetImg.Free()
tilesetTxt, err := renderer.CreateTextureFromSurface(tilesetImg)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
os.Exit(4)
}
defer tilesetTxt.Destroy()
spritesheetImg, err := img.Load("assets/textures/actor3.png")
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
os.Exit(3)
}
defer spritesheetImg.Free()
spritesheetTxt, err := renderer.CreateTextureFromSurface(spritesheetImg)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
os.Exit(4)
}
defer spritesheetTxt.Destroy()
err = ttf.Init()
font, err = ttf.OpenFont("assets/textures/PressStart2P.ttf", 18)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load font file: %s\n", err)
os.Exit(6)
}
if err := sdl.Init(sdl.INIT_AUDIO); err != nil {
fmt.Fprintf(os.Stderr, "Failed to load music file: %s\n", err)
os.Exit(7)
}
if err := mix.Init(mix.INIT_MP3); err != nil {
fmt.Fprintf(os.Stderr, "Failed to load music file: %s\n", err)
os.Exit(8)
}
currScene = &eng.Scene{
Window: eng.Window{winWidth, winHeight},
StartTime: time.Now(),
Cam: eng.Camera{0, 0},
EnemyCount: 99,
TsTxt: tilesetTxt,
SsTxt: spritesheetTxt,
Font: font,
}
currScene.Init(renderer)
var running bool = true
for running {
then := time.Now()
running = catchEvents()
//currScene.Update()
currScene.Render(renderer)
dur := time.Since(then)
sdl.Delay(40 - uint32(dur.Nanoseconds()/1000000))
currScene.FrameCounter++
}
}
func run(serverStr, name string) int {
var window *sdl.Window
var renderer *sdl.Renderer
var running bool
var event sdl.Event
var inputState InputState
url := "ws://" + serverStr
origin := "http://" + serverStr
ws, err := websocket.Dial(url, "", origin)
if err != nil {
fmt.Printf("%v\n", err)
os.Exit(1)
}
window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer window.Destroy()
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer renderer.Destroy()
renderer.Clear()
websocket.Message.Send(ws, joinMessage(name))
running = true
var data map[string]map[string][]map[string]interface{}
decoder := msgpack.NewDecoder(ws)
renderer.SetDrawColor(1, 1, 1, 255)
renderer.Clear()
for running {
renderer.SetDrawColor(1, 1, 1, 255)
renderer.Clear()
newInputState := inputState
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.KeyDownEvent:
switch event.(*sdl.KeyDownEvent).Keysym.Sym {
case sdl.K_ESCAPE:
running = false
case sdl.K_LEFT:
newInputState.Left = true
case sdl.K_RIGHT:
newInputState.Right = true
case sdl.K_UP:
newInputState.Thrust = true
}
case *sdl.KeyUpEvent:
switch event.(*sdl.KeyUpEvent).Keysym.Sym {
case sdl.K_LEFT:
newInputState.Left = false
case sdl.K_RIGHT:
newInputState.Right = false
case sdl.K_UP:
newInputState.Thrust = false
}
}
}
if !newInputState.IsSameAs(inputState) {
websocket.Message.Send(ws, newInputState.Message())
inputState = newInputState
}
decoder.Decode(&data)
for _, ship := range data["state"]["ships"] {
colourhex, _ := hex.DecodeString(ship["colour"].(string)[1:7])
rot, _ := ship["rotation"].(float64)
s := Ship{
Position: V2{float64(ship["x"].(int64)), float64(ship["y"].(int64))},
Size: 30,
Rotation: rot,
Doge: ship["doge"].(bool),
}
renderer.SetDrawColor(uint8(colourhex[0]), uint8(colourhex[1]), uint8(colourhex[2]), 255)
renderer.DrawLines(s.Points())
}
renderer.Present()
}
return 0
}
// win==nil requests a full-screen window
func Run(win WindowSpec) int {
// All SDL calls must come from same thread.
runtime.LockOSThread()
defer runtime.UnlockOSThread()
err := sdl.Init(sdl.INIT_EVERYTHING)
if err != nil {
panic(err)
}
defer sdl.Quit()
// Install audio callback
spec := &sdl.AudioSpec{
Freq: SampleRate,
Format: sdl.AUDIO_F32SYS,
Channels: 1,
Samples: 4096,
Callback: sdl.AudioCallback(C.getSoundSamplesAdaptor),
}
audioDevice, err := sdl.OpenAudioDevice("", false, spec, nil, 0)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to open audio device: %v\n", err)
panic(err)
}
if audioDevice < 2 {
fmt.Fprintf(os.Stderr, "Audio device=%v < 2 contrary to SDL-2 documentation\n", audioDevice, err)
}
sdl.PauseAudioDevice(audioDevice, false)
// Create window
var window *sdl.Window
if win != nil {
// Partial screen
winWidth, winHeight := win.Size()
window, err = sdl.CreateWindow(win.Title(), sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
int(winWidth), int(winHeight), sdl.WINDOW_SHOWN)
} else {
// Full screen
if isMacOS {
// Contrary to https://wiki.libsdl.org/SDL_CreateWindow, on MacOS 10.11.1
// a call to sdl.CreateWindow in fullscreen mode *does* use the w and h parameters.
// So ask what the display size is.
var mode sdl.DisplayMode
err = sdl.GetDesktopDisplayMode(0, &mode)
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot get desktop display mode")
panic(err)
}
window, err = sdl.CreateWindow("", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
int(mode.W), int(mode.H), sdl.WINDOW_SHOWN|sdl.WINDOW_FULLSCREEN_DESKTOP)
} else {
window, err = sdl.CreateWindow("", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
0, 0, sdl.WINDOW_SHOWN|sdl.WINDOW_FULLSCREEN_DESKTOP)
}
}
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %v\n", err)
panic(err)
}
defer window.Destroy()
// Create renderer
width, height := window.GetSize()
renderer, err := sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED|sdl.RENDERER_PRESENTVSYNC)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %v\n", err)
panic(err)
}
defer renderer.Destroy()
var nTex = 1
if isMacOS {
// Work around MacOS bug via double buffering
nTex = 2
}
// Create texture
tex := make([]*sdl.Texture, nTex)
for i := range tex {
tex[i], err = renderer.CreateTexture(sdl.PIXELFORMAT_ARGB8888, sdl.TEXTUREACCESS_STREAMING, width, height)
if err != nil {
fmt.Fprintf(os.Stderr, "renderer.CreateTexture: %v\n", err)
panic(err)
}
defer tex[i].Destroy()
}
for _, r := range renderClientList {
r.Init(int32(width), int32(height))
}
// Loop until quit
for i := 0; ; i ^= nTex - 1 {
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch e := event.(type) {
case *sdl.QuitEvent:
return 0
case *sdl.MouseMotionEvent:
// Go equivalent of SDL_PRESSED seems to be missing, so compare with zero.
if e.State != 0 {
forwardMouseEvent(MouseDrag, int32(e.X), int32(e.Y))
} else {
forwardMouseEvent(MouseMove, int32(e.X), int32(e.Y))
}
case *sdl.MouseButtonEvent:
switch e.Type {
case sdl.MOUSEBUTTONDOWN:
forwardMouseEvent(MouseDown, int32(e.X), int32(e.Y))
case sdl.MOUSEBUTTONUP:
forwardMouseEvent(MouseUp, int32(e.X), int32(e.Y))
}
case *sdl.KeyDownEvent:
var k Key
if 0x20 <= e.Keysym.Sym && e.Keysym.Sym < 0x7F {
// Printable ASCII
k = Key(e.Keysym.Sym)
} else {
// Try special character table
k = keyMap[e.Keysym.Sym]
}
if k != 0 {
forwardKeyEvent(k)
}
}
}
pixels, pitch := lockTexture(tex[i], width, height)
pm := MakePixMap(int32(width), int32(height), pixels, int32(pitch))
for _, r := range renderClientList {
r.Render(pm)
}
tex[i].Unlock()
err := renderer.Clear()
if err != nil {
fmt.Fprintf(os.Stderr, "renderer.Clear: %v", err)
panic(err)
}
renderer.Copy(tex[i], nil, nil)
if err != nil {
fmt.Fprintf(os.Stderr, "renderer.Copy: %v", err)
panic(err)
}
renderer.Present()
}
}
func main() {
var window *sdl.Window
var renderer *sdl.Renderer
var event sdl.Event
var running bool
window = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
winWidth, winHeight, sdl.WINDOW_SHOWN)
if window == nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", sdl.GetError())
os.Exit(1)
}
renderer = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
if renderer == nil {
fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", sdl.GetError())
os.Exit(2)
}
running = true
lastPushTime := sdl.GetTicks()
for running {
// Push a UserEvent every second
if lastPushTime+pushTime < sdl.GetTicks() {
lastPushTime = sdl.GetTicks()
pEvent := &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), window.GetID(), 1331, nil, nil}
retVal := sdl.PushEvent(pEvent) // Here's where the event is actually pushed
switch retVal {
case 1:
fmt.Println("PushEvent returned success")
case 0:
fmt.Println("PushEvent returned filtered")
case -1:
fmt.Printf("PushEvent returned error: %s\n", sdl.GetError)
}
}
for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseMotionEvent:
fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
case *sdl.MouseButtonEvent:
fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
case *sdl.MouseWheelEvent:
fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
t.Timestamp, t.Type, t.Which, t.X, t.Y)
case *sdl.KeyUpEvent:
fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
case *sdl.UserEvent:
fmt.Printf("[%d ms] UserEvent\tcode:%d\n", t.Timestamp, t.Code)
}
}
sdl.Delay(1000 / 30)
}
renderer.Destroy()
window.Destroy()
}
