mirror of
https://github.com/OpenDiablo2/OpenDiablo2
synced 2024-10-31 16:27:18 -04:00
b7e50bf098
* Add terminal, surface, assetmanager commands * echo command * add verbose logging * more logging, word wrap * add timescale command
567 lines
12 KiB
Go
567 lines
12 KiB
Go
package d2term
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import (
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"bufio"
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"bytes"
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"errors"
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"fmt"
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"image/color"
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"io"
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"log"
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"math"
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"reflect"
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"sort"
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"strconv"
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"strings"
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"github.com/OpenDiablo2/D2Shared/d2helper"
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"github.com/OpenDiablo2/OpenDiablo2/d2render/d2surface"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/inpututil"
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)
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const (
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termCharWidth = 6
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termCharHeight = 16
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termRowCount = 24
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termRowCountMax = 32
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termColCountMax = 128
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termAnimLength = 0.5
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)
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type termCategory int
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const (
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termCategoryNone termCategory = iota
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termCategoryInfo
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termCategoryWarning
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termCategoryError
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)
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type termVis int
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const (
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termVisHidden termVis = iota
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termVisShowing
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termVisShown
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termVisHiding
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)
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var (
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termBgColor = color.RGBA{0x2e, 0x34, 0x36, 0xb0}
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termFgColor = color.RGBA{0x55, 0x57, 0x53, 0xb0}
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termInfoColor = color.RGBA{0x34, 0x65, 0xa4, 0xb0}
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termWarningColor = color.RGBA{0xfc, 0xe9, 0x4f, 0xb0}
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termErrorColor = color.RGBA{0xcc, 0x00, 0x00, 0xb0}
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)
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type termHistroyEntry struct {
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text string
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category termCategory
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}
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type termActionEntry struct {
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action interface{}
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description string
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}
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type terminal struct {
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outputHistory []termHistroyEntry
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outputIndex int
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command string
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commandHistory []string
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commandIndex int
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lineCount int
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visState termVis
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visAnim float64
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actions map[string]termActionEntry
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}
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func createTerminal() (*terminal, error) {
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terminal := &terminal{
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lineCount: termRowCount,
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actions: make(map[string]termActionEntry),
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}
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terminal.outputInfo("::: OpenDiablo2 Terminal :::")
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terminal.outputInfo("type \"ls\" for a list of actions")
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terminal.bindAction("ls", "list available actions", func() {
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var names []string
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for name, _ := range terminal.actions {
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names = append(names, name)
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}
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sort.Strings(names)
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terminal.outputInfo("available actions (%d):", len(names))
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for _, name := range names {
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entry := terminal.actions[name]
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terminal.outputInfo("%s: %s; %s", name, entry.description, reflect.TypeOf(entry.action).String())
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}
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})
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terminal.bindAction("clear", "clear terminal", func() {
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terminal.outputClear()
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})
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return terminal, nil
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}
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func (t *terminal) advance(elapsed float64) error {
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if inpututil.IsKeyJustPressed(ebiten.KeyGraveAccent) {
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switch t.visState {
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case termVisShowing, termVisShown:
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t.hide()
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case termVisHiding, termVisHidden:
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t.show()
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}
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}
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switch t.visState {
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case termVisShowing:
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t.visAnim = math.Min(1.0, t.visAnim+elapsed/termAnimLength)
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if t.visAnim == 1.0 {
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t.visState = termVisShown
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}
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case termVisHiding:
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t.visAnim = math.Max(0.0, t.visAnim-elapsed/termAnimLength)
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if t.visAnim == 0.0 {
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t.visState = termVisHidden
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}
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}
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if !t.isVisible() {
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return nil
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}
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maxOutputIndex := d2helper.MaxInt(0, len(t.outputHistory)-t.lineCount)
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if inpututil.IsKeyJustPressed(ebiten.KeyHome) {
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t.outputIndex = maxOutputIndex
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyEnd) {
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t.outputIndex = 0
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyPageUp) {
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if t.outputIndex += t.lineCount; t.outputIndex >= maxOutputIndex {
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t.outputIndex = maxOutputIndex
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}
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyPageDown) {
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if t.outputIndex -= t.lineCount; t.outputIndex < 0 {
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t.outputIndex = 0
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}
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyEscape) {
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t.command = ""
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyUp) {
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if ebiten.IsKeyPressed(ebiten.KeyControl) {
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t.lineCount = d2helper.MaxInt(0, t.lineCount-1)
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} else if len(t.commandHistory) > 0 {
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t.command = t.commandHistory[t.commandIndex]
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if t.commandIndex == 0 {
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t.commandIndex = len(t.commandHistory) - 1
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} else {
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t.commandIndex--
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}
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}
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyDown) && ebiten.IsKeyPressed(ebiten.KeyControl) {
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t.lineCount = d2helper.MinInt(t.lineCount+1, termRowCountMax)
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyBackspace) && len(t.command) > 0 {
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t.command = t.command[:len(t.command)-1]
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}
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if inpututil.IsKeyJustPressed(ebiten.KeyEnter) && len(t.command) > 0 {
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var commandHistory []string
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for _, command := range t.commandHistory {
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if command != t.command {
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commandHistory = append(commandHistory, command)
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}
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}
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t.commandHistory = append(commandHistory, t.command)
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t.output(t.command)
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if err := t.execute(t.command); err != nil {
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t.outputError(err.Error())
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}
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t.commandIndex = len(t.commandHistory) - 1
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t.command = ""
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}
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for _, c := range ebiten.InputChars() {
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if c != '`' {
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t.command += string(c)
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}
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}
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return nil
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}
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func (t *terminal) render(surface *d2surface.Surface) error {
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if !t.isVisible() {
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return nil
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}
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totalWidth, _ := surface.GetSize()
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outputHeight := t.lineCount * termCharHeight
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totalHeight := outputHeight + termCharHeight
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offset := -int((1.0 - easeInOut(t.visAnim)) * float64(totalHeight))
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surface.PushTranslation(0, offset)
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surface.DrawRect(totalWidth, outputHeight, termBgColor)
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for i := 0; i < t.lineCount; i++ {
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historyIndex := len(t.outputHistory) - i - t.outputIndex - 1
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if historyIndex < 0 {
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break
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}
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historyEntry := t.outputHistory[historyIndex]
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surface.PushTranslation(termCharWidth*2, outputHeight-(i+1)*termCharHeight)
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surface.DrawText(historyEntry.text)
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surface.PushTranslation(-termCharWidth*2, 0)
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switch historyEntry.category {
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case termCategoryInfo:
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surface.DrawRect(termCharWidth, termCharHeight, termInfoColor)
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case termCategoryWarning:
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surface.DrawRect(termCharWidth, termCharHeight, termWarningColor)
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case termCategoryError:
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surface.DrawRect(termCharWidth, termCharHeight, termErrorColor)
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}
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surface.Pop()
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surface.Pop()
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}
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surface.PushTranslation(0, outputHeight)
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surface.DrawRect(totalWidth, termCharHeight, termFgColor)
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surface.DrawText("> " + t.command)
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surface.Pop()
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surface.Pop()
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return nil
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}
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func (t *terminal) execute(command string) error {
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params := parseCommand(command)
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if len(params) == 0 {
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return errors.New("invalid command")
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}
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actionName := params[0]
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actionParams := params[1:]
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actionEntry, ok := t.actions[actionName]
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if !ok {
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return errors.New("action not found")
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}
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actionType := reflect.TypeOf(actionEntry.action)
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if actionType.Kind() != reflect.Func {
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return errors.New("action is not a function")
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}
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if len(actionParams) != actionType.NumIn() {
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return errors.New("action requires different argument count")
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}
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var paramValues []reflect.Value
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for i := 0; i < actionType.NumIn(); i++ {
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actionParam := actionParams[i]
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switch actionType.In(i).Kind() {
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case reflect.String:
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paramValues = append(paramValues, reflect.ValueOf(actionParam))
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case reflect.Int:
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value, err := strconv.ParseInt(actionParam, 10, 64)
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if err != nil {
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return err
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}
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paramValues = append(paramValues, reflect.ValueOf(int(value)))
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case reflect.Uint:
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value, err := strconv.ParseUint(actionParam, 10, 64)
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if err != nil {
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return err
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}
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paramValues = append(paramValues, reflect.ValueOf(uint(value)))
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case reflect.Float64:
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value, err := strconv.ParseFloat(actionParam, 64)
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if err != nil {
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return err
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}
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paramValues = append(paramValues, reflect.ValueOf(value))
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case reflect.Bool:
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value, err := strconv.ParseBool(actionParam)
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if err != nil {
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return err
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}
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paramValues = append(paramValues, reflect.ValueOf(value))
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default:
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return errors.New("action has unsupported arguments")
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}
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}
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actionValue := reflect.ValueOf(actionEntry.action)
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actionReturnValues := actionValue.Call(paramValues)
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if actionReturnValueCount := len(actionReturnValues); actionReturnValueCount > 0 {
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t.outputInfo("function returned %d values:", actionReturnValueCount)
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for _, actionReturnValue := range actionReturnValues {
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t.outputInfo("%v: %s", actionReturnValue.Interface(), actionReturnValue.String())
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}
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}
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return nil
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}
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func (t *terminal) outputRaw(text string, category termCategory) {
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var line string
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for _, word := range strings.Split(text, " ") {
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if len(line) > 0 {
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line += " "
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}
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lineLength := len(line)
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wordLength := len(word)
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if lineLength+wordLength >= termColCountMax {
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t.outputHistory = append(t.outputHistory, termHistroyEntry{line, category})
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line = word
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} else {
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line += word
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}
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}
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t.outputHistory = append(t.outputHistory, termHistroyEntry{line, category})
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}
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func (t *terminal) output(format string, params ...interface{}) {
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t.outputRaw(fmt.Sprintf(format, params...), termCategoryNone)
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}
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func (t *terminal) outputInfo(format string, params ...interface{}) {
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t.outputRaw(fmt.Sprintf(format, params...), termCategoryInfo)
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}
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func (t *terminal) outputWarning(format string, params ...interface{}) {
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t.outputRaw(fmt.Sprintf(format, params...), termCategoryWarning)
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}
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func (t *terminal) outputError(format string, params ...interface{}) {
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t.outputRaw(fmt.Sprintf(format, params...), termCategoryError)
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}
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func (t *terminal) outputClear() {
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t.outputHistory = nil
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t.outputIndex = 0
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}
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func (t *terminal) isVisible() bool {
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return t.visState != termVisHidden
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}
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func (t *terminal) hide() {
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if t.visState != termVisHidden {
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t.visState = termVisHiding
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}
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}
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func (t *terminal) show() {
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if t.visState != termVisShown {
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t.visState = termVisShowing
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}
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}
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func (t *terminal) bindAction(name, description string, action interface{}) error {
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actionType := reflect.TypeOf(action)
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if actionType.Kind() != reflect.Func {
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return errors.New("action is not a function")
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}
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for i := 0; i < actionType.NumIn(); i++ {
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switch actionType.In(i).Kind() {
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case reflect.String:
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case reflect.Int:
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case reflect.Uint:
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case reflect.Float64:
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case reflect.Bool:
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break
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default:
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return errors.New("action has unsupported arguments")
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}
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}
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t.actions[name] = termActionEntry{action, description}
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return nil
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}
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func (t *terminal) unbindAction(name string) {
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delete(t.actions, name)
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}
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var singleton *terminal
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func Initialize() error {
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if singleton != nil {
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return errors.New("terminal system is already initialized")
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}
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var err error
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singleton, err = createTerminal()
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return err
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}
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func Advance(elapsed float64) error {
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if singleton != nil {
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return singleton.advance(elapsed)
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}
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return nil
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}
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func Output(format string, params ...interface{}) {
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if singleton != nil {
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singleton.output(format, params...)
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}
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}
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func OutputInfo(format string, params ...interface{}) {
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if singleton != nil {
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singleton.outputInfo(format, params...)
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}
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}
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func OutputWarning(format string, params ...interface{}) {
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if singleton != nil {
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singleton.outputWarning(format, params...)
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}
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}
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func OutputError(format string, params ...interface{}) {
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if singleton != nil {
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singleton.outputError(format, params...)
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}
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}
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func BindAction(name, description string, action interface{}) {
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if singleton != nil {
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singleton.bindAction(name, description, action)
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}
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}
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func UnbindAction(name string) {
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if singleton != nil {
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singleton.unbindAction(name)
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}
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}
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func Render(surface *d2surface.Surface) error {
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if singleton != nil {
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return singleton.render(surface)
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}
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return nil
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}
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type terminalLogger struct {
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buffer bytes.Buffer
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writer io.Writer
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}
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func (t *terminalLogger) Write(p []byte) (int, error) {
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n, err := t.buffer.Write(p)
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if err != nil {
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return n, err
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}
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reader := bufio.NewReader(&t.buffer)
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bytes, _, err := reader.ReadLine()
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if err != nil {
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return n, err
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}
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line := string(bytes[:])
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lineLower := strings.ToLower(line)
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if strings.Index(lineLower, "error") > 0 {
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OutputError(line)
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} else if strings.Index(lineLower, "warning") > 0 {
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OutputWarning(line)
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} else {
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Output(line)
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}
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return t.writer.Write(p)
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}
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func BindLogger() {
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log.SetOutput(&terminalLogger{writer: log.Writer()})
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}
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func easeInOut(t float64) float64 {
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t *= 2
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if t < 1 {
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return 0.5 * t * t * t * t
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} else {
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t -= 2
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return -0.5 * (t*t*t*t - 2)
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}
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}
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func parseCommand(command string) []string {
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var (
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quoted bool
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escape bool
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param string
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params []string
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)
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for _, c := range command {
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switch c {
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case '"':
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if escape {
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param += string(c)
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escape = false
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} else {
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quoted = !quoted
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}
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case ' ':
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if quoted {
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param += string(c)
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} else if len(param) > 0 {
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params = append(params, param)
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param = ""
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}
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case '\\':
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if escape {
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param += string(c)
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escape = false
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} else {
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escape = true
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}
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default:
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param += string(c)
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}
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}
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if len(param) > 0 {
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params = append(params, param)
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}
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return params
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}
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