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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-10-31 08:17:21 -04:00
OpenDiablo2/d2render/d2ui/manager.go
Alex Yatskov c01bedaedf Do not advance state in render (#269)
* Do not advance state in render

* Update advance logic for sprite and region
2019-12-28 23:32:24 -05:00

154 lines
3.9 KiB
Go

package d2ui
import (
"github.com/OpenDiablo2/D2Shared/d2common/d2resource"
"github.com/OpenDiablo2/OpenDiablo2/d2audio"
"github.com/OpenDiablo2/OpenDiablo2/d2render"
"github.com/OpenDiablo2/OpenDiablo2/d2render/d2surface"
"github.com/hajimehoshi/ebiten"
)
// CursorButton represents a mouse button
type CursorButton uint8
const (
// CursorButtonLeft represents the left mouse button
CursorButtonLeft CursorButton = 1
// CursorButtonRight represents the right mouse button
CursorButtonRight CursorButton = 2
)
// Manager represents the UI manager
type Manager struct {
widgets []Widget
cursorSprite *d2render.Sprite
cursorButtons CursorButton
pressedIndex int
CursorX int
CursorY int
clickSfx *d2audio.SoundEffect
waitForLeftMouseUp bool
}
// CreateManager creates a new instance of a UI manager
func CreateManager(soundManager d2audio.Manager) *Manager {
cursorSprite, _ := d2render.LoadSprite(d2resource.CursorDefault, d2resource.PaletteUnits)
result := &Manager{
pressedIndex: -1,
cursorSprite: cursorSprite,
clickSfx: soundManager.LoadSoundEffect(d2resource.SFXButtonClick),
waitForLeftMouseUp: false,
}
return result
}
// Reset resets the state of the UI manager. Typically called for new scenes
func (v *Manager) Reset() {
v.widgets = make([]Widget, 0)
v.pressedIndex = -1
v.waitForLeftMouseUp = true
}
// AddWidget adds a widget to the UI manager
func (v *Manager) AddWidget(widget Widget) {
v.widgets = append(v.widgets, widget)
}
func (v *Manager) WaitForMouseRelease() {
v.waitForLeftMouseUp = true
}
// Render renders all of the UI elements
func (v *Manager) Render(target *d2surface.Surface) {
for _, widget := range v.widgets {
if widget.GetVisible() {
widget.Render(target)
}
}
cx, cy := ebiten.CursorPosition()
v.cursorSprite.SetPosition(cx, cy)
v.cursorSprite.Render(target)
}
// Update updates all of the UI elements
func (v *Manager) Advance(elapsed float64) {
for _, widget := range v.widgets {
if widget.GetVisible() {
widget.Advance(elapsed)
}
}
v.cursorButtons = 0
if ebiten.IsMouseButtonPressed(ebiten.MouseButtonLeft) {
if !v.waitForLeftMouseUp {
v.cursorButtons |= CursorButtonLeft
}
} else {
if v.waitForLeftMouseUp {
v.waitForLeftMouseUp = false
}
}
if ebiten.IsMouseButtonPressed(ebiten.MouseButtonRight) {
v.cursorButtons |= CursorButtonRight
}
v.CursorX, v.CursorY = ebiten.CursorPosition()
if v.CursorButtonPressed(CursorButtonLeft) {
found := false
for i, widget := range v.widgets {
if !widget.GetVisible() || !widget.GetEnabled() {
continue
}
wx, wy := widget.GetPosition()
ww, wh := widget.GetSize()
if v.CursorX >= wx && v.CursorX <= wx+int(ww) && v.CursorY >= wy && v.CursorY <= wy+int(wh) {
widget.SetPressed(true)
if v.pressedIndex == -1 {
found = true
v.pressedIndex = i
v.clickSfx.Play()
} else if v.pressedIndex > -1 && v.pressedIndex != i {
v.widgets[i].SetPressed(false)
} else {
found = true
}
} else {
widget.SetPressed(false)
}
}
if !found {
if v.pressedIndex > -1 {
v.widgets[v.pressedIndex].SetPressed(false)
} else {
v.pressedIndex = -2
}
}
} else {
if v.pressedIndex > -1 {
widget := v.widgets[v.pressedIndex]
wx, wy := widget.GetPosition()
ww, wh := widget.GetSize()
if v.CursorX >= wx && v.CursorX <= wx+int(ww) && v.CursorY >= wy && v.CursorY <= wy+int(wh) {
widget.Activate()
}
} else {
for _, widget := range v.widgets {
if !widget.GetVisible() || !widget.GetEnabled() {
continue
}
widget.SetPressed(false)
}
}
v.pressedIndex = -1
}
}
// CursorButtonPressed determines if the specified button has been pressed
func (v *Manager) CursorButtonPressed(button CursorButton) bool {
return v.cursorButtons&button > 0
}
func (v *Manager) KeyPressed(key ebiten.Key) bool {
return ebiten.IsKeyPressed(key)
}