96 lines
2.6 KiB
Go
96 lines
2.6 KiB
Go
// This program creates an SDL window and renderer and pushes events with PushEvent to be read by PollEvents
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package main
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import (
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"fmt"
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"os"
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"github.com/veandco/go-sdl2/sdl"
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)
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var winTitle string = "Go-SDL2 TestWaitEvent"
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var winWidth, winHeight int32 = 800, 600
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const pushTime uint32 = 1000 // number of milliseconds between event pushes
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func run() int {
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var window *sdl.Window
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var renderer *sdl.Renderer
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var event sdl.Event
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var running bool
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var err error
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sdl.Init(sdl.INIT_EVERYTHING)
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defer sdl.Quit()
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window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
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winWidth, winHeight, sdl.WINDOW_SHOWN)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
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return 1
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}
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defer window.Destroy()
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renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
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return 2
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}
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defer renderer.Destroy()
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running = true
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lastPushTime := sdl.GetTicks()
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for running {
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// Push a UserEvent every second
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if lastPushTime+pushTime < sdl.GetTicks() {
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lastPushTime = sdl.GetTicks()
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id, err := window.GetID()
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if err != nil {
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return 3
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}
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pEvent := &sdl.UserEvent{sdl.USEREVENT, sdl.GetTicks(), id, 1331, nil, nil}
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retVal, err := sdl.PushEvent(pEvent) // Here's where the event is actually pushed
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to push event: %s\n", err)
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return 4
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}
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if retVal {
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fmt.Println("PushEvent returned success")
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} else {
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fmt.Println("PushEvent returned filtered")
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}
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}
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for event = sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
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switch t := event.(type) {
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case sdl.QuitEvent:
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running = false
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case sdl.MouseMotionEvent:
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fmt.Printf("[%d ms] MouseMotion\ttype:%d\tid:%d\tx:%d\ty:%d\txrel:%d\tyrel:%d\n",
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t.Timestamp, t.Type, t.Which, t.X, t.Y, t.XRel, t.YRel)
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case sdl.MouseButtonEvent:
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fmt.Printf("[%d ms] MouseButton\ttype:%d\tid:%d\tx:%d\ty:%d\tbutton:%d\tstate:%d\n",
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t.Timestamp, t.Type, t.Which, t.X, t.Y, t.Button, t.State)
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case sdl.MouseWheelEvent:
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fmt.Printf("[%d ms] MouseWheel\ttype:%d\tid:%d\tx:%d\ty:%d\n",
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t.Timestamp, t.Type, t.Which, t.X, t.Y)
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case sdl.KeyboardEvent:
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fmt.Printf("[%d ms] Keyboard\ttype:%d\tsym:%c\tmodifiers:%d\tstate:%d\trepeat:%d\n",
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t.Timestamp, t.Type, t.Keysym.Sym, t.Keysym.Mod, t.State, t.Repeat)
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case sdl.UserEvent:
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fmt.Printf("[%d ms] UserEvent\tcode:%d\n", t.Timestamp, t.Code)
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}
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}
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sdl.Delay(1000 / 30)
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}
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return 0
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}
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func main() {
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os.Exit(run())
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}
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