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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-11-05 09:47:18 -05:00
OpenDiablo2/d2core/d2render/ebiten/ebiten_renderer.go
2020-07-26 19:29:37 -04:00

143 lines
3.7 KiB
Go

package ebiten
import (
"image"
"github.com/hajimehoshi/ebiten"
"github.com/hajimehoshi/ebiten/ebitenutil"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
"github.com/OpenDiablo2/OpenDiablo2/d2core/d2config"
)
const (
screenWidth = 800
screenHeight = 600
)
// Renderer is an implementation of a renderer
type Renderer struct {
renderCallback func(surface d2interface.Surface) error
}
// Update updates the screen with the given *ebiten.Image
func (r *Renderer) Update(screen *ebiten.Image) error {
err := r.renderCallback(createEbitenSurface(screen))
if err != nil {
return err
}
return nil
}
// Layout returns the renderer screen width and height
func (r *Renderer) Layout(_, _ int) (width, height int) {
return screenWidth, screenHeight
}
// CreateRenderer creates an ebiten renderer instance
func CreateRenderer() (*Renderer, error) {
result := &Renderer{}
config := d2config.Config
ebiten.SetCursorMode(ebiten.CursorModeHidden)
ebiten.SetFullscreen(config.FullScreen)
ebiten.SetRunnableOnUnfocused(config.RunInBackground)
ebiten.SetVsyncEnabled(config.VsyncEnabled)
ebiten.SetMaxTPS(config.TicksPerSecond)
return result, nil
}
// GetRendererName returns the name of the renderer
func (*Renderer) GetRendererName() string {
return "Ebiten"
}
// SetWindowIcon sets the icon for the window, visible in the chrome of the window
func (*Renderer) SetWindowIcon(fileName string) {
_, iconImage, err := ebitenutil.NewImageFromFile(fileName, ebiten.FilterLinear)
if err == nil {
ebiten.SetWindowIcon([]image.Image{iconImage})
}
}
// IsDrawingSkipped returns a bool for whether or not the drawing has been skipped
func (r *Renderer) IsDrawingSkipped() bool {
return ebiten.IsDrawingSkipped()
}
// Run initializes the renderer
func (r *Renderer) Run(f func(surface d2interface.Surface) error, width, height int, title string) error {
r.renderCallback = f
ebiten.SetWindowTitle(title)
ebiten.SetWindowResizable(true)
ebiten.SetWindowSize(width, height)
return ebiten.RunGame(r)
}
// CreateSurface creates a renderer surface from an existing surface
func (r *Renderer) CreateSurface(surface d2interface.Surface) (d2interface.Surface, error) {
result := createEbitenSurface(
surface.(*ebitenSurface).image,
surfaceState{
filter: ebiten.FilterNearest,
effect: d2enum.DrawEffectNone,
saturation: 1.0,
brightness: 1.0,
skewX: 0.0,
skewY: 0.0,
scaleX: 0.0,
scaleY: 0.0,
},
)
return result, nil
}
// NewSurface creates a new surface
func (r *Renderer) NewSurface(width, height int, filter d2enum.Filter) (d2interface.Surface, error) {
ebitenFilter := d2ToEbitenFilter(filter)
img, err := ebiten.NewImage(width, height, ebitenFilter)
if err != nil {
return nil, err
}
return createEbitenSurface(img), nil
}
// IsFullScreen returns a boolean for whether or not the renderer is currently set to fullscreen
func (r *Renderer) IsFullScreen() bool {
return ebiten.IsFullscreen()
}
// SetFullScreen sets the renderer to fullscreen, given a boolean
func (r *Renderer) SetFullScreen(fullScreen bool) {
ebiten.SetFullscreen(fullScreen)
}
// SetVSyncEnabled enables vsync, given a boolean
func (r *Renderer) SetVSyncEnabled(vsync bool) {
ebiten.SetVsyncEnabled(vsync)
}
// GetVSyncEnabled returns a boolean for whether or not vsync is enabled
func (r *Renderer) GetVSyncEnabled() bool {
return ebiten.IsVsyncEnabled()
}
// GetCursorPos returns the current cursor position x,y coordinates
func (r *Renderer) GetCursorPos() (x, y int) {
return ebiten.CursorPosition()
}
// CurrentFPS returns the current frames per second of the renderer
func (r *Renderer) CurrentFPS() float64 {
return ebiten.CurrentFPS()
}