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examples/isometric: Do not create an ebiten.Image every frame

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This commit is contained in:
Hajime Hoshi 2021-10-01 11:36:38 +09:00
parent 234a3d8d2a
commit f3318a2cec
1 changed files with 17 additions and 3 deletions
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20
examples/isometric/game.go
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@ -37,6 +37,8 @@ type Game struct {
camScaleTo float64
mousePanX, mousePanY int
debugImg *ebiten.Image
}
// NewGame returns a new isometric demo Game.
@ -149,13 +151,25 @@ func (g *Game) Draw(screen *ebiten.Image) {
g.renderLevel(screen)
// Print game info.
var origW int
if g.debugImg != nil {
w, _ := g.debugImg.Size()
origW = w
}
debugBox := image.NewRGBA(image.Rect(0, 0, g.w, 200))
debugImg := ebiten.NewImageFromImage(debugBox)
ebitenutil.DebugPrint(debugImg, fmt.Sprintf("KEYS WASD EC R\nFPS %0.0f\nTPS %0.0f\nSCA %0.2f\nPOS %0.0f,%0.0f", ebiten.CurrentFPS(), ebiten.CurrentTPS(), g.camScale, g.camX, g.camY))
if origW != g.w {
if g.debugImg != nil {
g.debugImg.Dispose()
}
g.debugImg = ebiten.NewImageFromImage(debugBox)
}
g.debugImg.Clear()
ebitenutil.DebugPrint(g.debugImg, fmt.Sprintf("KEYS WASD EC R\nFPS %0.0f\nTPS %0.0f\nSCA %0.2f\nPOS %0.0f,%0.0f", ebiten.CurrentFPS(), ebiten.CurrentTPS(), g.camScale, g.camX, g.camY))
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(3, 0)
op.GeoM.Scale(2, 2)
screen.DrawImage(debugImg, op)
screen.DrawImage(g.debugImg, op)
}
// Layout is called when the Game's layout changes.