// Loads resources
func (e *Engine) Load() {
assetDir := filepath.Join("..", "android", "assets")
if runtime.GOOS == "android" {
assetDir = ""
}
err := e.LoadSprite(filepath.Join(assetDir, "images", "sprite.png"))
if err != nil {
sdl.LogError(sdl.LOG_CATEGORY_APPLICATION, "LoadSprite: %s\n", err)
}
err = e.LoadFont(filepath.Join(assetDir, "fonts", "universalfruitcake.ttf"), 24)
if err != nil {
sdl.LogError(sdl.LOG_CATEGORY_APPLICATION, "LoadTexture: %s\n", err)
}
err = e.LoadMusic(filepath.Join(assetDir, "music", "frantic-gameplay.ogg"))
if err != nil {
sdl.LogError(sdl.LOG_CATEGORY_APPLICATION, "LoadMusic: %s\n", err)
}
err = e.LoadSound(filepath.Join(assetDir, "sounds", "click.wav"))
if err != nil {
sdl.LogError(sdl.LOG_CATEGORY_APPLICATION, "LoadSound: %s\n", err)
}
e.StateText = map[int]*Text{}
for k, v := range stateText {
t, _ := e.RenderText(v, sdl.Color{0, 0, 0, 0})
_, _, tW, tH, _ := t.Query()
e.StateText[k] = &Text{tW, tH, t}
}
}
func run() {
runtime.LockOSThread()
e := NewEngine()
// Initialize SDL
err := e.Init()
if err != nil {
sdl.LogError(sdl.LOG_CATEGORY_APPLICATION, "Init: %s\n", err)
}
defer e.Destroy()
// Sprite size
const n = 128
// Sprite rects
var rects []*sdl.Rect
for x := 0; x < 6; x++ {
rect := &sdl.Rect{int32(n * x), 0, n, n}
rects = append(rects, rect)
}
// Load resources
e.Load()
// Play music
e.Music.Play(-1)
var frame int = 0
var alpha uint8 = 255
var showText bool = true
var text *Text = e.StateText[StateRun]
for e.Running() {
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch t := event.(type) {
case *sdl.QuitEvent:
e.Quit()
case *sdl.MouseButtonEvent:
e.Sound.Play(2, 0)
if t.Type == sdl.MOUSEBUTTONDOWN && t.Button == sdl.BUTTON_LEFT {
alpha = 255
showText = true
if e.State == StateRun {
text = e.StateText[StateFlap]
e.State = StateFlap
} else if e.State == StateFlap {
text = e.StateText[StateDead]
e.State = StateDead
} else if e.State == StateDead {
text = e.StateText[StateRun]
e.State = StateRun
}
}
case *sdl.KeyDownEvent:
if t.Keysym.Scancode == sdl.SCANCODE_ESCAPE || t.Keysym.Scancode == sdl.SCANCODE_AC_BACK {
e.Quit()
}
}
}
e.Renderer.Clear()
var clips []*sdl.Rect
w, h := e.Window.GetSize()
x, y := int32(w/2), int32(h/2)
switch e.State {
case StateRun:
e.Renderer.SetDrawColor(168, 235, 254, 255)
clips = rects[0:2]
case StateFlap:
e.Renderer.SetDrawColor(251, 231, 240, 255)
clips = rects[2:4]
case StateDead:
e.Renderer.SetDrawColor(255, 250, 205, 255)
clips = rects[4:6]
}
clip := clips[frame/2]
e.Renderer.FillRect(nil)
e.Renderer.Copy(e.Sprite, clip, &sdl.Rect{x - (n / 2), y - (n / 2), n, n})
if showText {
text.Texture.SetAlphaMod(alpha)
e.Renderer.Copy(text.Texture, nil, &sdl.Rect{x - (text.Width / 2), y - n*1.5, text.Width, text.Height})
}
e.Renderer.Present()
sdl.Delay(50)
frame += 1
if frame/2 >= 2 {
frame = 0
}
alpha -= 10
if alpha <= 10 {
alpha = 255
showText = false
}
}
}