349 lines
10 KiB
Go
349 lines
10 KiB
Go
package d2gamescreen
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import (
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"fmt"
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"image/color"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2asset"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2gui"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math/d2vector"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2util"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2ui"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
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"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2audio"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2map/d2mapentity"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2map/d2maprenderer"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2screen"
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"github.com/OpenDiablo2/OpenDiablo2/d2game/d2player"
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"github.com/OpenDiablo2/OpenDiablo2/d2networking/d2client"
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"github.com/OpenDiablo2/OpenDiablo2/d2networking/d2netpacket"
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)
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const hideZoneTextAfterSeconds = 2.0
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const (
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moveErrStr = "failed to send MovePlayer packet to the server, playerId: %s, x: %g, x: %g\n"
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bindControlsErrStr = "failed to add gameControls as input handler for player: %s\n"
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castErrStr = "failed to send CastSkill packet to the server, playerId: %s, skillId: %d, x: %g, x: %g\n"
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spawnItemErrStr = "failed to send SpawnItem packet to the server: (%d, %d) %+v"
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)
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// Game represents the Gameplay screen
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type Game struct {
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*d2mapentity.MapEntityFactory
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asset *d2asset.AssetManager
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gameClient *d2client.GameClient
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mapRenderer *d2maprenderer.MapRenderer
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uiManager *d2ui.UIManager
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gameControls *d2player.GameControls // TODO: Hack
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localPlayer *d2mapentity.Player
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lastRegionType d2enum.RegionIdType
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ticksSinceLevelCheck float64
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escapeMenu *d2player.EscapeMenu
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soundEngine *d2audio.SoundEngine
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soundEnv d2audio.SoundEnvironment
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guiManager *d2gui.GuiManager
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renderer d2interface.Renderer
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inputManager d2interface.InputManager
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audioProvider d2interface.AudioProvider
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terminal d2interface.Terminal
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}
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// CreateGame creates the Gameplay screen and returns a pointer to it
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func CreateGame(
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navigator d2interface.Navigator,
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asset *d2asset.AssetManager,
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ui *d2ui.UIManager,
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renderer d2interface.Renderer,
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inputManager d2interface.InputManager,
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audioProvider d2interface.AudioProvider,
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gameClient *d2client.GameClient,
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term d2interface.Terminal,
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guiManager *d2gui.GuiManager,
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) *Game {
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// find the local player and its initial location
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var startX, startY float64
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for _, player := range gameClient.Players {
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if player.ID() != gameClient.PlayerID {
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continue
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}
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worldPosition := player.Position.World()
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startX, startY = worldPosition.X(), worldPosition.Y()
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break
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}
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result := &Game{
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asset: asset,
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gameClient: gameClient,
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gameControls: nil,
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localPlayer: nil,
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lastRegionType: d2enum.RegionNone,
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ticksSinceLevelCheck: 0,
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mapRenderer: d2maprenderer.CreateMapRenderer(asset, renderer,
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gameClient.MapEngine, term, startX, startY),
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escapeMenu: d2player.NewEscapeMenu(navigator, renderer, audioProvider, guiManager, asset),
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inputManager: inputManager,
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audioProvider: audioProvider,
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renderer: renderer,
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terminal: term,
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soundEngine: d2audio.NewSoundEngine(audioProvider, asset, term),
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uiManager: ui,
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guiManager: guiManager,
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}
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result.soundEnv = d2audio.NewSoundEnvironment(result.soundEngine)
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result.escapeMenu.OnLoad()
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if err := inputManager.BindHandler(result.escapeMenu); err != nil {
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fmt.Println("failed to add gameplay screen as event handler")
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}
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return result
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}
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// OnLoad loads the resources for the Gameplay screen
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func (v *Game) OnLoad(_ d2screen.LoadingState) {
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v.audioProvider.PlayBGM("")
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err := v.terminal.BindAction(
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"spawnitem",
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"spawns an item at the local player position",
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func(code1, code2, code3, code4, code5 string) {
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codes := []string{code1, code2, code3, code4, code5}
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v.debugSpawnItemAtPlayer(codes...)
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},
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)
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if err != nil {
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fmt.Printf("failed to bind the '%s' action, err: %v\n", "spawnitem", err)
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}
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err = v.terminal.BindAction(
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"spawnitemat",
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"spawns an item at the x,y coordinates",
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func(x, y int, code1, code2, code3, code4, code5 string) {
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codes := []string{code1, code2, code3, code4, code5}
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v.debugSpawnItemAtLocation(x, y, codes...)
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},
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)
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if err != nil {
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fmt.Printf("failed to bind the '%s' action, err: %v\n", "spawnitemat", err)
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}
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err = v.terminal.BindAction(
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"spawnmon",
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"spawn monster at the local player position",
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func(name string) {
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x := int(v.localPlayer.Position.X())
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y := int(v.localPlayer.Position.Y())
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monstat := v.asset.Records.Monster.Stats[name]
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if monstat == nil {
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v.terminal.OutputErrorf("no monstat entry for \"%s\"", name)
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return
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}
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monster, err := v.gameClient.MapEngine.NewNPC(x, y, monstat, 0)
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if err != nil {
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v.terminal.OutputErrorf("error generating monster \"%s\": %v", name, err)
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return
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}
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v.gameClient.MapEngine.AddEntity(monster)
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},
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)
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if err != nil {
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fmt.Printf("failed to bind the '%s' action, err: %v\n", "spawnmon", err)
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}
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}
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// OnUnload releases the resources of Gameplay screen
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func (v *Game) OnUnload() error {
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if err := v.inputManager.UnbindHandler(v.gameControls); err != nil { // TODO: hack
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return err
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}
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if err := v.inputManager.UnbindHandler(v.escapeMenu); err != nil { // TODO: hack
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return err
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}
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if err := v.terminal.UnbindAction("spawnItemAt"); err != nil {
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return err
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}
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if err := v.terminal.UnbindAction("spawnItem"); err != nil {
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return err
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}
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if err := v.gameClient.Close(); err != nil {
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return err
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}
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v.soundEngine.Reset()
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return nil
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}
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// Render renders the Gameplay screen
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func (v *Game) Render(screen d2interface.Surface) error {
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if v.gameClient.RegenMap {
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v.gameClient.RegenMap = false
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v.mapRenderer.RegenerateTileCache()
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v.gameClient.MapEngine.IsLoading = false
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}
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if err := screen.Clear(color.Black); err != nil {
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return err
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}
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v.mapRenderer.Render(screen)
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if v.gameControls != nil {
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if v.gameControls.HelpOverlay != nil && v.gameControls.HelpOverlay.IsOpen() {
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// When help overlay is open, put transparent black screen. Magic noumber is hex for RGBA.
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screen.DrawRect(800, 600, d2util.Color(0x0000007f))
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}
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if err := v.gameControls.Render(screen); err != nil {
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return err
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}
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}
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return nil
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}
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// Advance runs the update logic on the Gameplay screen
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func (v *Game) Advance(elapsed float64) error {
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v.soundEngine.Advance(elapsed)
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if (v.escapeMenu != nil && !v.escapeMenu.IsOpen()) || len(v.gameClient.Players) != 1 {
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v.gameClient.MapEngine.Advance(elapsed) // TODO: Hack
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}
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if v.gameControls != nil {
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if err := v.gameControls.Advance(elapsed); err != nil {
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return err
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}
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}
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v.ticksSinceLevelCheck += elapsed
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if v.ticksSinceLevelCheck > 1.0 {
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v.ticksSinceLevelCheck = 0
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if v.localPlayer != nil {
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tilePosition := v.localPlayer.Position.Tile()
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tile := v.gameClient.MapEngine.TileAt(int(tilePosition.X()), int(tilePosition.Y()))
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if tile != nil {
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levelDetails := v.asset.Records.Level.Details[int(tile.RegionType)]
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v.soundEnv.SetEnv(levelDetails.SoundEnvironmentID)
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// skip showing zone change text the first time we enter the world
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if v.lastRegionType != d2enum.RegionNone && v.lastRegionType != tile.RegionType {
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//TODO: Should not be using RegionType as an index - this will return incorrect LevelDetails record for most of the zones.
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areaName := levelDetails.LevelDisplayName
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areaChgStr := fmt.Sprintf("Entering The %s", areaName)
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v.gameControls.SetZoneChangeText(areaChgStr)
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v.gameControls.ShowZoneChangeText()
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v.gameControls.HideZoneChangeTextAfter(hideZoneTextAfterSeconds)
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}
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v.lastRegionType = tile.RegionType
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}
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}
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}
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// Bind the game controls to the player once it exists
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if v.gameControls == nil {
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if err := v.bindGameControls(); err != nil {
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return err
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}
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}
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// Update the camera to focus on the player
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if v.localPlayer != nil && !v.gameControls.FreeCam {
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worldPosition := v.localPlayer.Position.World()
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rx, ry := v.mapRenderer.WorldToOrtho(worldPosition.X(), worldPosition.Y())
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position := d2vector.NewPosition(rx, ry)
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v.mapRenderer.SetCameraTarget(&position)
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}
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v.soundEnv.Advance(elapsed)
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return nil
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}
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func (v *Game) bindGameControls() error {
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for _, player := range v.gameClient.Players {
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if player.ID() != v.gameClient.PlayerID {
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continue
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}
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v.localPlayer = player
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var err error
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v.gameControls, err = d2player.NewGameControls(v.asset, v.renderer, player, v.gameClient.MapEngine,
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v.escapeMenu, v.mapRenderer, v, v.terminal, v.uiManager, v.guiManager, v.gameClient.IsSinglePlayer())
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if err != nil {
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return err
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}
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v.gameControls.Load()
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if err := v.inputManager.BindHandler(v.gameControls); err != nil {
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fmt.Printf(bindControlsErrStr, player.ID())
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}
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break
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}
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return nil
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}
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// OnPlayerMove sends the player move action to the server
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func (v *Game) OnPlayerMove(targetX, targetY float64) {
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worldPosition := v.localPlayer.Position.World()
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playerID, worldX, worldY := v.gameClient.PlayerID, worldPosition.X(), worldPosition.Y()
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createPlayerPacket := d2netpacket.CreateMovePlayerPacket(playerID, worldX, worldY, targetX, targetY)
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err := v.gameClient.SendPacketToServer(createPlayerPacket)
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if err != nil {
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fmt.Printf(moveErrStr, v.gameClient.PlayerID, targetX, targetY)
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}
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}
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// OnPlayerCast sends the casting skill action to the server
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func (v *Game) OnPlayerCast(skillID int, targetX, targetY float64) {
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err := v.gameClient.SendPacketToServer(d2netpacket.CreateCastPacket(v.gameClient.PlayerID, skillID, targetX, targetY))
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if err != nil {
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fmt.Printf(castErrStr, v.gameClient.PlayerID, skillID, targetX, targetY)
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}
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}
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func (v *Game) debugSpawnItemAtPlayer(codes ...string) {
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if v.localPlayer == nil {
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return
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}
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pos := v.localPlayer.GetPosition()
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tile := pos.Tile()
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x, y := int(tile.X()), int(tile.Y())
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v.debugSpawnItemAtLocation(x, y, codes...)
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}
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func (v *Game) debugSpawnItemAtLocation(x, y int, codes ...string) {
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packet := d2netpacket.CreateSpawnItemPacket(x, y, codes...)
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err := v.gameClient.SendPacketToServer(packet)
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if err != nil {
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fmt.Printf(spawnItemErrStr, x, y, codes)
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}
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}
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