func playGame(screen *sdl.Surface, bg *glh.Texture, font *gltext.Font) (int, bool) {
movingUp := false
b := bird.NewBird(240, 380)
score := 0
var pipes []*pipe.Pipe
ticker := 0
for {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
quit := manageEvents(screen, &movingUp)
if quit {
return score, true
}
renderBackground(screen, bg)
ticker++
if ticker > 100 {
pipes = append(pipes, pipe.NewPipe(int(screen.W), int(screen.H)))
ticker = 0
}
if movingUp {
b.MoveUp()
} else {
b.MoveDown()
}
for _, p := range pipes {
if p.X < 0 {
p.Destroy()
pipes = pipes[1:]
}
if p.CollidesWith(b.X, b.Y, b.Width, b.Height) {
return score, false
}
if p.GonePast(b.X, b.Y) {
score++
}
p.Tick()
p.Render()
}
b.Render()
font.Printf(240, 50, strconv.Itoa(score))
screen.Flip()
time.Sleep((1 / 30) * time.Second)
sdl.GL_SwapBuffers()
}
}
func gameOverScreen(
screen *sdl.Surface,
score string,
bg *glh.Texture,
font *gltext.Font) bool {
for {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
for e := sdl.PollEvent(); e != nil; e = sdl.PollEvent() {
switch e.(type) {
case *sdl.ResizeEvent:
resize(screen, e.(*sdl.ResizeEvent))
case *sdl.QuitEvent:
return true
case *sdl.MouseButtonEvent:
return false
}
}
renderBackground(screen, bg)
font.Printf(110, 50, "Game Over")
font.Printf(110, 100, "Your score: "+score)
font.Printf(110, 150, "Click to play again")
sdl.GL_SwapBuffers()
time.Sleep((1 / 30) * time.Second)
}
return false
}