func (a *arrangerFunc) Arrange(e s.Engine, n *s.Node, t clock.Time) {
sprite, _ := a.eng.sprites[n]
frameTime := float32(t - a.eng.lastUpdate)
updatePosition(sprite, frameTime)
screenWidthScaler, screenHeightScaler := a.eng.GetScreenScalers()
actualScaleX := screenWidthScaler * sprite.ScaleX
actualScaleY := screenHeightScaler * sprite.ScaleY
actualPositionX := screenWidthScaler * sprite.X
actualPositionY := screenHeightScaler * sprite.Y
e.SetSubTex(n, *sprite.GetCurrentFrame().Texture)
r := sprite.Rotation * math.Pi / 180
matrix := f32.Affine{
{1, 0, 0},
{0, 1, 0},
}
matrix.Translate(&matrix, actualPositionX, actualPositionY)
//matrix.Translate(&matrix, sprite.X, sprite.Y)
matrix.Rotate(&matrix, r)
matrix.Scale(&matrix, actualScaleX, actualScaleY)
e.SetTransform(n, matrix)
a.eng.lastUpdate = t
}
func (g *Game) Scene(eng sprite.Engine) *sprite.Node {
texs := loadTextures(eng)
scene := &sprite.Node{}
eng.Register(scene)
eng.SetTransform(scene, f32.Affine{
{1, 0, 0},
{0, 1, 0},
})
newNode := func(fn arrangerFunc) {
n := &sprite.Node{Arranger: arrangerFunc(fn)}
eng.Register(n)
scene.AppendChild(n)
}
// The gopher.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texGopher])
eng.SetTransform(n, f32.Affine{
{tileWidth, 0, 0},
{0, tileHeight, 0},
})
})
return scene
}
func loadScene(eng sprite.Engine, ts map[string]sprite.SubTex) *sprite.Node {
root := &sprite.Node{}
eng.Register(root)
eng.SetTransform(root, f32.Affine{
{1, 0, 0},
{0, 1, 0},
})
n := &sprite.Node{}
eng.Register(n)
root.AppendChild(n)
eng.SetTransform(n, f32.Affine{
{200, 0, 0},
{0, 200, 0},
})
n.Arranger = arrangerFunc(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
s := fmt.Sprintf("%02d", int(t))
eng.SetSubTex(n, ts[s[0:1]])
})
return root
}
func (g *Game) Scene(eng sprite.Engine) *sprite.Node {
texs := loadTextures(eng)
scene = &sprite.Node{} // sceneのルートノードを生成
eng.Register(scene) // Engineオブジェクトにルートノードを登録
// ルートの初期位置やスケールを設定する
eng.SetTransform(scene, f32.Affine{
{1, 0, 0},
{0, 1, 0},
})
newNode := func(fn arrangerFunc) {
n := &sprite.Node{Arranger: arrangerFunc(fn)}
eng.Register(n)
scene.AppendChild(n)
}
// The ground.
// 地面を描画するメソッド
for i := range g.groundY {
i := i
// 地表の描画
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texGround]) //texGroundのテクスチャを使う
eng.SetTransform(n, f32.Affine{
{tileWidth, 0, float32(i)*tileWidth - g.scroll.x},
{0, tileHeight, g.groundY[i]}, //地面を描画する
})
})
// 地中の描画
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texEarth])
eng.SetTransform(n, f32.Affine{
{tileWidth, 0, float32(i) * tileWidth},
{0, tileHeight * tilesY, g.groundY[i] + tileHeight},
})
})
}
// The gopher.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texGopher])
eng.SetTransform(n, f32.Affine{
{tileWidth, 0, tileWidth * gopherTile},
{0, tileHeight, g.gopher.y},
})
})
return scene
}
// Shows the back of c
func (c *Card) SetBackDisplay(eng sprite.Engine) {
eng.SetSubTex(c.node, c.back)
}
// Shows the front of c
func (c *Card) SetFrontDisplay(eng sprite.Engine) {
eng.SetSubTex(c.node, c.image)
}
// Scene creates and returns a new app scene.
func (a *App) Scene(eng sprite.Engine, sz size.Event) *sprite.Node {
texs := loadTextures(eng)
scene := &sprite.Node{}
eng.Register(scene)
eng.SetTransform(scene, f32.Affine{
{1, 0, 0},
{0, 1, 0},
})
newNode := func(fn arrangerFunc) {
n := &sprite.Node{Arranger: arrangerFunc(fn)}
eng.Register(n)
scene.AppendChild(n)
}
// Controller boundaries.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texCtrl])
eng.SetTransform(n, f32.Affine{
{ctrlSize, 0, a.ctrl.x},
{0, ctrlSize, a.ctrl.y},
})
})
// Controller stick.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texStick])
eng.SetTransform(n, f32.Affine{
{ctrlStickSize, 0, a.stick.x},
{0, ctrlStickSize, a.stick.y},
})
})
// Bot.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texBot])
eng.SetTransform(n, f32.Affine{
{botSize, 0, a.bot.x},
{0, botSize, a.bot.y},
})
})
// Proximity small.
const (
smSizeW = 15
smSizeH = 5
)
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texProxSmGrey+a.bot.front.sm])
eng.SetTransform(n, f32.Affine{
{smSizeW, 0, a.bot.x + botSize/2 - smSizeW/2},
{0, smSizeH, a.bot.y - 2*smSizeH},
})
})
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texProxSmGrey+a.bot.rear.sm])
eng.SetTransform(n, f32.Affine{
{smSizeW, 0, a.bot.x + botSize/2 - smSizeW/2},
{0, -smSizeH, a.bot.y + botSize + 2*smSizeH},
})
})
// Proximity medium.
const (
mdSizeW = 25
mdSizeH = 7
)
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texProxMdGrey+a.bot.front.md])
eng.SetTransform(n, f32.Affine{
{mdSizeW, 0, a.bot.x + botSize/2 - mdSizeW/2},
{0, mdSizeH, a.bot.y - 3*mdSizeH},
})
})
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texProxMdGrey+a.bot.rear.md])
eng.SetTransform(n, f32.Affine{
{mdSizeW, 0, a.bot.x + botSize/2 - mdSizeW/2},
{0, -mdSizeH, a.bot.y + botSize + 3*mdSizeH},
})
})
// Proximity large
const (
lgSizeW = 35
lgSizeH = 10
)
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texProxLgGrey+a.bot.front.lg])
eng.SetTransform(n, f32.Affine{
{lgSizeW, 0, a.bot.x + botSize/2 - lgSizeW/2},
{0, lgSizeH, a.bot.y - 3.2*lgSizeH},
})
})
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texProxLgGrey+a.bot.rear.lg])
eng.SetTransform(n, f32.Affine{
{lgSizeW, 0, a.bot.x + botSize/2 - lgSizeW/2},
{0, -lgSizeH, a.bot.y + botSize + 3.2*lgSizeH},
})
})
return scene
}
func (g *Game) Scene(eng sprite.Engine) *sprite.Node {
texs := loadTextures(eng)
scene := &sprite.Node{}
eng.Register(scene)
eng.SetTransform(scene, f32.Affine{
{1, 0, 0},
{0, 1, 0},
})
newNode := func(fn arrangerFunc) {
n := &sprite.Node{Arranger: arrangerFunc(fn)}
eng.Register(n)
scene.AppendChild(n)
}
// The ground.
for i := range g.groundY {
i := i
// The top of the ground.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[g.groundTex[i]])
eng.SetTransform(n, f32.Affine{
{tileWidth, 0, float32(i)*tileWidth - g.scroll.x},
{0, tileHeight, g.groundY[i]},
})
})
// The earth beneath.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
eng.SetSubTex(n, texs[texEarth])
eng.SetTransform(n, f32.Affine{
{tileWidth, 0, float32(i)*tileWidth - g.scroll.x},
{0, tileHeight * tilesY, g.groundY[i] + tileHeight},
})
})
}
// The gopher.
newNode(func(eng sprite.Engine, n *sprite.Node, t clock.Time) {
a := f32.Affine{
{tileWidth * 2, 0, tileWidth*(gopherTile-1) + tileWidth/8},
{0, tileHeight * 2, g.gopher.y - tileHeight + tileHeight/4},
}
var x int
switch {
case g.gopher.dead:
x = frame(t, 16, texGopherDead1, texGopherDead2)
animateDeadGopher(&a, t-g.gopher.deadTime)
case g.gopher.v < 0:
x = frame(t, 4, texGopherFlap1, texGopherFlap2)
case g.gopher.atRest:
x = frame(t, 4, texGopherRun1, texGopherRun2)
default:
x = frame(t, 8, texGopherRun1, texGopherRun2)
}
eng.SetSubTex(n, texs[x])
eng.SetTransform(n, a)
})
return scene
}