Initial player Left skill and Right skill handling (#741)

* Initial player Left skill and Right skill handling

* Handle empty skill names in charStats.BaseSkils + add Attack skill for all classes.

Co-authored-by: Presiyan Ivanov <presiyan-ivanov@users.noreply.github.com>

d2common/d2data/d2datadict/missiles.go

@@ -306,10 +306,17 @@ func createMissileRecord(line string) MissileRecord {
 // Missiles stores all of the MissileRecords
 //nolint:gochecknoglobals // Currently global by design, only written once
 var Missiles map[int]*MissileRecord
+var missilesByName map[string]*MissileRecord
+
+// GetMissileByName allows lookup of a MissileRecord by a given name. The name will be lowercased and stripped of whitespaces.
+func GetMissileByName(missileName string) *MissileRecord {
+	return missilesByName[sanitize(missileName)]
+}
 
 // LoadMissiles loads MissileRecords from missiles.txt
 func LoadMissiles(file []byte) {
 	Missiles = make(map[int]*MissileRecord)
+	missilesByName = make(map[string]*MissileRecord)
 	data := strings.Split(string(file), "\r\n")[1:]
 
 	for _, line := range data {
@@ -319,11 +326,16 @@ func LoadMissiles(file []byte) {
 
 		rec := createMissileRecord(line)
 		Missiles[rec.Id] = &rec
+		missilesByName[sanitize(rec.Name)] = &rec
 	}
 
 	log.Printf("Loaded %d missiles", len(Missiles))
 }
 
+func sanitize(missileName string) string {
+	return strings.ToLower(strings.ReplaceAll(missileName, " ", ""))
+}
+
 func loadMissileCalcParam(r *[]string, inc func() int) MissileCalcParam {
 	result := MissileCalcParam{
 		Param: d2util.StringToInt(d2util.EmptyToZero((*r)[inc()])),

d2common/d2data/d2datadict/skilldesc.go

@@ -17,7 +17,7 @@ type SkillDescriptionRecord struct {
 	SkillColumn  string                    // SkillColumn
 	ListRow      string                    // ListRow
 	ListPool     string                    // ListPool
-	IconCel      string                    // IconCel
+	IconCel      int                       // IconCel
 	NameKey      string                    // str name
 	ShortKey     string                    // str short
 	LongKey      string                    // str long
@@ -146,7 +146,7 @@ func LoadSkillDescriptions(file []byte) { //nolint:funlen // doesn't make sense
 			d.String("SkillColumn"),
 			d.String("ListRow"),
 			d.String("ListPool"),
-			d.String("IconCel"),
+			d.Number("IconCel"),
 			d.String("str name"),
 			d.String("str short"),
 			d.String("str long"),

d2common/d2data/d2datadict/skills.go

@@ -12,6 +12,8 @@ import (
 //nolint:gochecknoglobals // Currently global by design, only written once
 var SkillDetails map[int]*SkillRecord
 
+var skillDetailsByName map[string]*SkillRecord
+
 // SkillRecord is a row from the skills.txt file. Here are two resources for more info on each field
 // [https://d2mods.info/forum/viewtopic.php?t=41556, https://d2mods.info/forum/kb/viewarticle?a=246]
 type SkillRecord struct {
@@ -263,6 +265,7 @@ type SkillRecord struct {
 // LoadCharStats loads charstats.txt file contents into map[d2enum.Hero]*CharStatsRecord
 func LoadSkills(file []byte) {
 	SkillDetails = make(map[int]*SkillRecord)
+	skillDetailsByName = make(map[string]*SkillRecord)
 
 	parser := d2parser.New()
 
@@ -515,6 +518,7 @@ func LoadSkills(file []byte) {
 			CostAdd:           d.Number("cost add"),
 		}
 		SkillDetails[record.ID] = record
+		skillDetailsByName[record.Skill] = record
 	}
 
 	if d.Err != nil {
@@ -523,3 +527,8 @@ func LoadSkills(file []byte) {
 
 	log.Printf("Loaded %d Skill records", len(SkillDetails))
 }
+
+// GetSkillByName returns the skill record for the given Skill name.
+func GetSkillByName(skillName string) *SkillRecord {
+	return skillDetailsByName[skillName]
+}

d2core/d2hero/hero_skill.go

@@ -0,0 +1,51 @@
+package d2hero
+
+import (
+	"encoding/json"
+	"log"
+
+	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2data/d2datadict"
+)
+
+// HeroSkill stores additional payload for a skill of a hero.
+type HeroSkill struct {
+	*d2datadict.SkillRecord
+	*d2datadict.SkillDescriptionRecord
+	SkillPoints int
+}
+
+// An auxilary struct which only stores the ID of the SkillRecord, instead of the whole SkillRecord and SkillDescrptionRecord.
+type shallowHeroSkill struct {
+	SkillID     int `json:"skillId"`
+	SkillPoints int `json:"skillPoints"`
+}
+
+// MarshalJSON overrides the default logic used when the HeroSkill is serialized to a byte array.
+func (hs *HeroSkill) MarshalJSON() ([]byte, error) {
+	// only serialize the ID instead of the whole SkillRecord object.
+	shallow := shallowHeroSkill{
+		SkillID:     hs.SkillRecord.ID,
+		SkillPoints: hs.SkillPoints,
+	}
+
+	bytes, err := json.Marshal(shallow)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	return bytes, err
+}
+
+// UnmarshalJSON overrides the default logic used when the HeroSkill is deserialized from a byte array.
+func (hs *HeroSkill) UnmarshalJSON(data []byte) error {
+	shallow := shallowHeroSkill{}
+	if err := json.Unmarshal(data, &shallow); err != nil {
+		return err
+	}
+
+	hs.SkillRecord = d2datadict.SkillDetails[shallow.SkillID]
+	hs.SkillDescriptionRecord = d2datadict.SkillDescriptions[hs.SkillRecord.Skilldesc]
+	hs.SkillPoints = shallow.SkillPoints
+
+	return nil
+}

d2core/d2hero/hero_skills_state.go

@@ -0,0 +1,26 @@
+package d2hero
+
+import "github.com/OpenDiablo2/OpenDiablo2/d2common/d2data/d2datadict"
+
+// HeroSkillsState hold all spells that a hero has.
+type HeroSkillsState map[int] *HeroSkill
+
+// CreateHeroSkillsState will assemble the hero skills from the class stats record.
+func CreateHeroSkillsState(classStats *d2datadict.CharStatsRecord) *HeroSkillsState {
+	baseSkills := HeroSkillsState{}
+
+	for idx := range classStats.BaseSkill {
+		skillName := &classStats.BaseSkill[idx]
+		if len(*skillName) == 0 {
+			continue
+		}
+
+		skillRecord := d2datadict.GetSkillByName(*skillName)
+		baseSkills[skillRecord.ID] = &HeroSkill{SkillPoints: 1, SkillRecord: skillRecord}
+	}
+
+	skillRecord := d2datadict.GetSkillByName("Attack")
+	baseSkills[skillRecord.ID] = &HeroSkill{SkillPoints: 1, SkillRecord: skillRecord}
+
+	return &baseSkills
+}

d2core/d2hero/hero_stats_state.go

@@ -30,8 +30,8 @@ type HeroStatsState struct {
 	PoisonResistance    int `json:"poisonResistance"`
 
 	// values which are not saved/loaded(computed)
-	Stamina      int // only MaxStamina is saved, Stamina gets reset on entering world
-	NextLevelExp int
+	Stamina      int `json:"-"` // only MaxStamina is saved, Stamina gets reset on entering world
+	NextLevelExp int `json:"-"`
 }
 
 // CreateHeroStatsState generates a running state from a hero stats.
@@ -56,8 +56,8 @@ func CreateHeroStatsState(heroClass d2enum.Hero, classStats *d2datadict.CharStat
 	result.Stamina = result.MaxStamina
 
 	// TODO: For demonstration purposes (hp, mana, exp, & character stats panel gets updated depending on stats)
-	result.Health = 20
-	result.Mana = 9
+	result.Health = 50
+	result.Mana = 30
 	result.Experience = 166
 
 	return &result

d2core/d2map/d2mapentity/factory.go

@@ -41,7 +41,7 @@ func NewAnimatedEntity(x, y int, animation d2interface.Animation) *AnimatedEntit
 
 // NewPlayer creates a new player entity and returns a pointer to it.
 func (f *MapEntityFactory) NewPlayer(id, name string, x, y, direction int, heroType d2enum.Hero,
-	stats *d2hero.HeroStatsState, equipment *d2inventory.CharacterEquipment) *Player {
+	stats *d2hero.HeroStatsState, skills *d2hero.HeroSkillsState, equipment *d2inventory.CharacterEquipment) *Player {
 	layerEquipment := &[d2enum.CompositeTypeMax]string{
 		d2enum.CompositeTypeHead:      equipment.Head.GetArmorClass(),
 		d2enum.CompositeTypeTorso:     equipment.Torso.GetArmorClass(),
@@ -62,11 +62,16 @@ func (f *MapEntityFactory) NewPlayer(id, name string, x, y, direction int, heroT
 	stats.NextLevelExp = d2datadict.GetExperienceBreakpoint(heroType, stats.Level)
 	stats.Stamina = stats.MaxStamina
 
+	attackSkillID := 0
 	result := &Player{
 		mapEntity: newMapEntity(x, y),
 		composite: composite,
 		Equipment: equipment,
 		Stats:     stats,
+		Skills:    skills,
+		//TODO: active left & right skill should be loaded from save file instead
+		LeftSkill: (*skills)[attackSkillID],
+		RightSkill:  (*skills)[attackSkillID],
 		name:      name,
 		Class:     heroType,
 		//nameLabel:    d2ui.NewLabel(d2resource.FontFormal11, d2resource.PaletteStatic),

d2core/d2map/d2mapentity/player.go

@@ -19,6 +19,9 @@ type Player struct {
 	composite         *d2asset.Composite
 	Equipment         *d2inventory.CharacterEquipment
 	Stats             *d2hero.HeroStatsState
+	Skills            *d2hero.HeroSkillsState
+	LeftSkill         *d2hero.HeroSkill
+	RightSkill        *d2hero.HeroSkill
 	Class             d2enum.Hero
 	lastPathSize      int
 	isInTown          bool

d2game/d2gamescreen/character_select.go

@@ -288,6 +288,7 @@ func (v *CharacterSelect) updateCharacterBoxes() {
 		v.characterImage[i] = v.NewPlayer("", "", 0, 0, 0,
 			v.gameStates[idx].HeroType,
 			v.gameStates[idx].Stats,
+			v.gameStates[idx].Skills,
 			&equipment,
 		)
 	}

d2game/d2gamescreen/game.go

@@ -27,7 +27,7 @@ const hideZoneTextAfterSeconds = 2.0
 const (
 	moveErrStr         = "failed to send MovePlayer packet to the server, playerId: %s, x: %g, x: %g\n"
 	bindControlsErrStr = "failed to add gameControls as input handler for player: %s\n"
-	castErrStr         = "failed to send CastSkill packet to the server, playerId: %s, missileId: %d, x: %g, x: %g\n"
+	castErrStr         = "failed to send CastSkill packet to the server, playerId: %s, skillId: %d, x: %g, x: %g\n"
 	spawnItemErrStr    = "failed to send SpawnItem packet to the server: (%d, %d) %+v"
 )
 
@@ -312,10 +312,10 @@ func (v *Game) OnPlayerMove(targetX, targetY float64) {
 }
 
 // OnPlayerCast sends the casting skill action to the server
-func (v *Game) OnPlayerCast(missileID int, targetX, targetY float64) {
-	err := v.gameClient.SendPacketToServer(d2netpacket.CreateCastPacket(v.gameClient.PlayerID, missileID, targetX, targetY))
+func (v *Game) OnPlayerCast(skillID int, targetX, targetY float64) {
+	err := v.gameClient.SendPacketToServer(d2netpacket.CreateCastPacket(v.gameClient.PlayerID, skillID, targetX, targetY))
 	if err != nil {
-		fmt.Printf(castErrStr, v.gameClient.PlayerID, missileID, targetX, targetY)
+		fmt.Printf(castErrStr, v.gameClient.PlayerID, skillID, targetX, targetY)
 	}
 }
 

d2game/d2player/game_controls.go

@@ -16,6 +16,7 @@ import (
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2enum"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2math/d2vector"
 	"github.com/OpenDiablo2/OpenDiablo2/d2core/d2gui"
+	"github.com/OpenDiablo2/OpenDiablo2/d2core/d2hero"
 
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
 	"github.com/OpenDiablo2/OpenDiablo2/d2common/d2resource"
@@ -35,7 +36,6 @@ type Panel interface {
 }
 
 const (
-	initialMissileID         = 59
 	expBarWidth              = 120.0
 	staminaBarWidth          = 102.0
 	globeHeight              = 80
@@ -65,7 +65,8 @@ type GameControls struct {
 	hpManaStatusSprite     *d2ui.Sprite
 	mainPanel              *d2ui.Sprite
 	menuButton             *d2ui.Sprite
-	skillIcon              *d2ui.Sprite
+	leftSkill              *SkillResource
+	rightSkill             *SkillResource
 	zoneChangeText         *d2ui.Label
 	nameLabel              *d2ui.Label
 	hpManaStatsLabel       *d2ui.Label
@@ -86,15 +87,21 @@ type ActionableRegion struct {
 	Rect             d2geom.Rectangle
 }
 
+type SkillResource struct {
+	SkillResourcePath string
+	IconNumber        int
+	SkillIcon         *d2ui.Sprite
+}
+
 const (
 	// Since they require special handling, not considering (1) globes, (2) content of the mini panel, (3) belt
 	leftSkill ActionableType = iota
-	leftSelect
+	newStats
 	xp
 	walkRun
 	stamina
 	miniPnl
-	rightSelect
+	newSkills
 	rightSkill
 	hpGlobe
 	manaGlobe
@@ -115,14 +122,6 @@ func NewGameControls(
 	guiManager *d2gui.GuiManager,
 	isSinglePlayer bool,
 ) (*GameControls, error) {
-	missileID := initialMissileID
-
-	err := term.BindAction("setmissile", "set missile id to summon on right click", func(id int) {
-		missileID = id
-	})
-	if err != nil {
-		return nil, err
-	}
 
 	zoneLabel := ui.NewLabel(d2resource.Font30, d2resource.PaletteUnits)
 	zoneLabel.Alignment = d2gui.HorizontalAlignCenter
@@ -175,18 +174,17 @@ func NewGameControls(
 		heroStatsPanel:   NewHeroStatsPanel(asset, ui, hero.Name(), hero.Class, hero.Stats),
 		helpOverlay:      help.NewHelpOverlay(asset, renderer, ui, guiManager),
 		miniPanel:        newMiniPanel(asset, ui, isSinglePlayer),
-		missileID:        missileID,
 		nameLabel:        hoverLabel,
 		zoneChangeText:   zoneLabel,
 		hpManaStatsLabel: globeStatsLabel,
 		actionableRegions: []ActionableRegion{
 			{leftSkill, d2geom.Rectangle{Left: 115, Top: 550, Width: 50, Height: 50}},
-			{leftSelect, d2geom.Rectangle{Left: 206, Top: 563, Width: 30, Height: 30}},
+			{newStats, d2geom.Rectangle{Left: 206, Top: 563, Width: 30, Height: 30}},
 			{xp, d2geom.Rectangle{Left: 253, Top: 560, Width: 125, Height: 5}},
 			{walkRun, d2geom.Rectangle{Left: 255, Top: 573, Width: 17, Height: 20}},
 			{stamina, d2geom.Rectangle{Left: 273, Top: 573, Width: 105, Height: 20}},
 			{miniPnl, d2geom.Rectangle{Left: 393, Top: 563, Width: 12, Height: 23}},
-			{rightSelect, d2geom.Rectangle{Left: 562, Top: 563, Width: 30, Height: 30}},
+			{newSkills, d2geom.Rectangle{Left: 562, Top: 563, Width: 30, Height: 30}},
 			{rightSkill, d2geom.Rectangle{Left: 634, Top: 550, Width: 50, Height: 50}},
 			{hpGlobe, d2geom.Rectangle{Left: 30, Top: 525, Width: 65, Height: 50}},
 			{manaGlobe, d2geom.Rectangle{Left: 700, Top: 525, Width: 65, Height: 50}},
@@ -198,7 +196,7 @@ func NewGameControls(
 		isSinglePlayer:         isSinglePlayer,
 	}
 
-	err = term.BindAction("freecam", "toggle free camera movement", func() {
+	err := term.BindAction("freecam", "toggle free camera movement", func() {
 		gc.FreeCam = !gc.FreeCam
 	})
 
@@ -206,6 +204,20 @@ func NewGameControls(
 		return nil, err
 	}
 
+	err = term.BindAction("setleftskill", "set skill to fire on left click", func(id int) {
+		skillRecord := d2datadict.SkillDetails[id]
+		gc.hero.LeftSkill = &d2hero.HeroSkill{SkillPoints: 0, SkillRecord: skillRecord, SkillDescriptionRecord: d2datadict.SkillDescriptions[skillRecord.Skilldesc]}
+	})
+
+	err = term.BindAction("setrightskill", "set skill to fire on right click", func(id int) {
+		skillRecord := d2datadict.SkillDetails[id]
+		gc.hero.RightSkill = &d2hero.HeroSkill{SkillPoints: 0, SkillRecord: skillRecord, SkillDescriptionRecord: d2datadict.SkillDescriptions[skillRecord.Skilldesc]}
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
 	return gc, nil
 }
 
@@ -297,7 +309,11 @@ func (g *GameControls) OnMouseButtonRepeat(event d2interface.MouseEvent) bool {
 	if isLeft && shouldDoLeft && inRect && !g.hero.IsCasting() {
 		g.lastLeftBtnActionTime = now
 
-		g.inputListener.OnPlayerMove(px, py)
+		if event.KeyMod() == d2enum.KeyModShift {
+			g.inputListener.OnPlayerCast(g.hero.LeftSkill.ID, px, py)
+		} else {
+			g.inputListener.OnPlayerMove(px, py)
+		}
 
 		if g.FreeCam {
 			if event.Button() == d2enum.MouseButtonLeft {
@@ -319,7 +335,7 @@ func (g *GameControls) OnMouseButtonRepeat(event d2interface.MouseEvent) bool {
 	if isRight && shouldDoRight && inRect && !g.hero.IsCasting() {
 		g.lastRightBtnActionTime = now
 
-		g.inputListener.OnPlayerCast(g.missileID, px, py)
+		g.inputListener.OnPlayerCast(g.hero.RightSkill.ID, px, py)
 
 		return true
 	}
@@ -364,7 +380,11 @@ func (g *GameControls) OnMouseButtonDown(event d2interface.MouseEvent) bool {
 	if event.Button() == d2enum.MouseButtonLeft && !g.isInActiveMenusRect(mx, my) && !g.hero.IsCasting() {
 		g.lastLeftBtnActionTime = d2util.Now()
 
-		g.inputListener.OnPlayerMove(px, py)
+		if event.KeyMod() == d2enum.KeyModShift {
+			g.inputListener.OnPlayerCast(g.hero.LeftSkill.ID, px, py)
+		} else {
+			g.inputListener.OnPlayerMove(px, py)
+		}
 
 		return true
 	}
@@ -372,7 +392,7 @@ func (g *GameControls) OnMouseButtonDown(event d2interface.MouseEvent) bool {
 	if event.Button() == d2enum.MouseButtonRight && !g.isInActiveMenusRect(mx, my) && !g.hero.IsCasting() {
 		g.lastRightBtnActionTime = d2util.Now()
 
-		g.inputListener.OnPlayerCast(g.missileID, px, py)
+		g.inputListener.OnPlayerCast(g.hero.RightSkill.ID, px, py)
 
 		return true
 	}
@@ -391,7 +411,12 @@ func (g *GameControls) Load() {
 	g.menuButton, _ = g.uiManager.NewSprite(d2resource.MenuButton, d2resource.PaletteSky)
 	_ = g.menuButton.SetCurrentFrame(2)
 
-	g.skillIcon, _ = g.uiManager.NewSprite(d2resource.GenericSkills, d2resource.PaletteSky)
+	// TODO: temporarily hardcoded to Attack, should come from saved state for hero
+	genericSkillsSprite, _ := g.uiManager.NewSprite(d2resource.GenericSkills, d2resource.PaletteSky)
+	attackIconID := 2
+
+	g.leftSkill = &SkillResource{SkillIcon: genericSkillsSprite, IconNumber: attackIconID, SkillResourcePath: d2resource.GenericSkills}
+	g.rightSkill = &SkillResource{SkillIcon: genericSkillsSprite, IconNumber: attackIconID, SkillResourcePath: d2resource.GenericSkills} 
 
 	g.loadUIButtons()
 
@@ -570,21 +595,26 @@ func (g *GameControls) Render(target d2interface.Surface) error {
 	offset += w
 
 	// Left skill
-	if err := g.skillIcon.SetCurrentFrame(2); err != nil {
+	skillResourcePath := g.getSkillResourceByClass(g.hero.LeftSkill.Charclass)
+	if skillResourcePath != g.leftSkill.SkillResourcePath {
+		g.leftSkill.SkillIcon, _ = g.uiManager.NewSprite(skillResourcePath, d2resource.PaletteSky)
+	}
+
+	if err := g.leftSkill.SkillIcon.SetCurrentFrame(g.hero.LeftSkill.IconCel); err != nil {
 		return err
 	}
 
-	w, _ = g.skillIcon.GetCurrentFrameSize()
+	w, _ = g.leftSkill.SkillIcon.GetCurrentFrameSize()
 
-	g.skillIcon.SetPosition(offset, height)
+	g.leftSkill.SkillIcon.SetPosition(offset, height)
 
-	if err := g.skillIcon.Render(target); err != nil {
+	if err := g.leftSkill.SkillIcon.Render(target); err != nil {
 		return err
 	}
 
 	offset += w
 
-	// Left skill selector
+	// New Stats Selector
 	if err := g.mainPanel.SetCurrentFrame(1); err != nil {
 		return err
 	}
@@ -668,7 +698,7 @@ func (g *GameControls) Render(target d2interface.Surface) error {
 
 	offset += w
 
-	// Right skill selector
+	// New Skills Selector
 	if err := g.mainPanel.SetCurrentFrame(4); err != nil {
 		return err
 	}
@@ -684,15 +714,20 @@ func (g *GameControls) Render(target d2interface.Surface) error {
 	offset += w
 
 	// Right skill
-	if err := g.skillIcon.SetCurrentFrame(2); err != nil {
+	skillResourcePath = g.getSkillResourceByClass(g.hero.RightSkill.Charclass)
+	if skillResourcePath != g.rightSkill.SkillResourcePath {
+		g.rightSkill.SkillIcon, _ = g.uiManager.NewSprite(skillResourcePath, d2resource.PaletteSky)
+	}
+
+	if err := g.rightSkill.SkillIcon.SetCurrentFrame(g.hero.RightSkill.IconCel); err != nil {
 		return err
 	}
 
-	w, _ = g.skillIcon.GetCurrentFrameSize()
+	w, _ = g.rightSkill.SkillIcon.GetCurrentFrameSize()
 
-	g.skillIcon.SetPosition(offset, height)
+	g.rightSkill.SkillIcon.SetPosition(offset, height)
 
-	if err := g.skillIcon.Render(target); err != nil {
+	if err := g.rightSkill.SkillIcon.Render(target); err != nil {
 		return err
 	}
 
@@ -800,7 +835,7 @@ func (g *GameControls) ManaStatsIsVisible() bool {
 	return g.manaStatsIsVisible
 }
 
-// ToggleHpStats toggles the visibility of the hp and mana stats placed above their respective globe
+// ToggleHpStats toggles the visibility of the hp and mana stats placed above their respective globe and load only if they do not match
 func (g *GameControls) ToggleHpStats() {
 	g.hpStatsIsVisible = !g.hpStatsIsVisible
 }
@@ -815,7 +850,7 @@ func (g *GameControls) onHoverActionable(item ActionableType) {
 	switch item {
 	case leftSkill:
 		return
-	case leftSelect:
+	case newStats:
 		return
 	case xp:
 		return
@@ -825,7 +860,7 @@ func (g *GameControls) onHoverActionable(item ActionableType) {
 		return
 	case miniPnl:
 		return
-	case rightSelect:
+	case newSkills:
 		return
 	case rightSkill:
 		return
@@ -843,8 +878,8 @@ func (g *GameControls) onClickActionable(item ActionableType) {
 	switch item {
 	case leftSkill:
 		log.Println("Left Skill Action Pressed")
-	case leftSelect:
-		log.Println("Left Skill Selector Action Pressed")
+	case newStats:
+		log.Println("New Stats Selector Action Pressed")
 	case xp:
 		log.Println("XP Action Pressed")
 	case walkRun:
@@ -855,8 +890,8 @@ func (g *GameControls) onClickActionable(item ActionableType) {
 		log.Println("Mini Panel Action Pressed")
 
 		g.miniPanel.Toggle()
-	case rightSelect:
-		log.Println("Right Skill Selector Action Pressed")
+	case newSkills:
+		log.Println("New Skills Selector Action Pressed")
 	case rightSkill:
 		log.Println("Right Skill Action Pressed")
 	case hpGlobe:
@@ -879,3 +914,30 @@ func (g *GameControls) onClickActionable(item ActionableType) {
 		log.Printf("Unrecognized ActionableType(%d) being clicked\n", item)
 	}
 }
+
+func (g *GameControls) getSkillResourceByClass(class string) string {
+	resource := ""
+
+	switch class {
+	case "":
+		resource = d2resource.GenericSkills
+	case "bar":
+		resource = d2resource.BarbarianSkills
+	case "nec":
+		resource = d2resource.NecromancerSkills
+	case "pal":
+		resource = d2resource.PaladinSkills
+	case "ass":
+		resource = d2resource.AssassinSkills
+	case "sor":
+		resource = d2resource.SorcererSkills
+	case "ama":
+		resource = d2resource.AmazonSkills
+	case "dru":
+		resource = d2resource.DruidSkills
+	default:
+		log.Fatalf("Unknown class token: '%s'", class)
+	}
+
+	return resource
+}

d2game/d2player/player_state.go

@@ -24,6 +24,7 @@ type PlayerState struct {
 	FilePath  string                         `json:"-"`
 	Equipment d2inventory.CharacterEquipment `json:"equipment"`
 	Stats     *d2hero.HeroStatsState         `json:"stats"`
+	Skills    *d2hero.HeroSkillsState        `json:"skills"`
 	X         float64                        `json:"x"`
 	Y         float64                        `json:"y"`
 }
@@ -50,17 +51,20 @@ func GetAllPlayerStates() []*PlayerState {
 
 		gameState := LoadPlayerState(path.Join(basePath, file.Name()))
 		if gameState == nil || gameState.HeroType == d2enum.HeroNone {
-			// temporarily loading default class stats if the character was created before saving stats was introduced
-			// to be removed in the future
 			continue
-		} else if gameState.Stats == nil {
-			gameState.Stats = d2hero.CreateHeroStatsState(gameState.HeroType, d2datadict.CharStats[gameState.HeroType])
+		} else if gameState.Stats == nil || gameState.Skills == nil {
+			// temporarily loading default class stats if the character was created before saving stats/skills was introduced
+			// to be removed in the future
+			classStats := d2datadict.CharStats[gameState.HeroType]
+			gameState.Stats = d2hero.CreateHeroStatsState(gameState.HeroType, classStats)
+			gameState.Skills = d2hero.CreateHeroSkillsState(classStats)
+
 			if err := gameState.Save(); err != nil {
 				fmt.Printf("failed to save game state!, err: %v\n", err)
 			}
 		}
-
 		result = append(result, gameState)
+
 	}
 
 	return result
@@ -98,6 +102,7 @@ func CreatePlayerState(heroName string, hero d2enum.Hero, classStats *d2datadict
 		HeroType:  hero,
 		Act:       1,
 		Stats:     d2hero.CreateHeroStatsState(hero, classStats),
+		Skills:    d2hero.CreateHeroSkillsState(classStats),
 		Equipment: d2inventory.HeroObjects[hero],
 		FilePath:  "",
 	}

d2networking/d2client/game_client.go

@@ -186,7 +186,7 @@ func (g *GameClient) handleAddPlayerPacket(packet d2netpacket.NetPacket) error {
 	}
 
 	newPlayer := g.MapEngine.NewPlayer(player.ID, player.Name, player.X, player.Y, 0,
-		player.HeroType, player.Stats, &player.Equipment)
+		player.HeroType, player.Stats, player.Skills, &player.Equipment)
 
 	g.Players[newPlayer.ID()] = newPlayer
 	g.MapEngine.AddEntity(newPlayer)
@@ -264,12 +264,19 @@ func (g *GameClient) handleCastSkillPacket(packet d2netpacket.NetPacket) error {
 
 	direction := player.Position.DirectionTo(*d2vector.NewVector(castX, castY))
 	player.SetDirection(direction)
+	skill := d2datadict.SkillDetails[playerCast.SkillID]
+	missileRecord := d2datadict.GetMissileByName(skill.Cltmissile)
+
+	if missileRecord == nil {
+		//TODO: handle casts that have no missiles(or have multiple missiles and require additional logic)
+		log.Println("Missile not found for skill ID", skill.ID)
+		return nil
+	}
 
-	// currently hardcoded to missile skill
 	missile, err := g.MapEngine.NewMissile(
 		int(player.Position.X()),
 		int(player.Position.Y()),
-		d2datadict.Missiles[playerCast.SkillID],
+		d2datadict.Missiles[missileRecord.Id],
 	)
 
 	if err != nil {
@@ -281,6 +288,7 @@ func (g *GameClient) handleCastSkillPacket(packet d2netpacket.NetPacket) error {
 	})
 
 	player.StartCasting(func() {
+		// shoot the missile after the player finished casting 
 		g.MapEngine.AddEntity(missile)
 	})
 

d2networking/d2netpacket/packet_add_player.go

@@ -20,12 +20,13 @@ type AddPlayerPacket struct {
 	HeroType  d2enum.Hero                    `json:"hero"`
 	Equipment d2inventory.CharacterEquipment `json:"equipment"`
 	Stats     *d2hero.HeroStatsState         `json:"heroStats"`
+	Skills    *d2hero.HeroSkillsState        `json:"heroSkills"`
 }
 
 // CreateAddPlayerPacket returns a NetPacket which declares an
 // AddPlayerPacket with the data in given parameters.
 func CreateAddPlayerPacket(id, name string, x, y int, heroType d2enum.Hero,
-	stats *d2hero.HeroStatsState, equipment d2inventory.CharacterEquipment) NetPacket {
+	stats *d2hero.HeroStatsState, skills *d2hero.HeroSkillsState, equipment d2inventory.CharacterEquipment) NetPacket {
 	addPlayerPacket := AddPlayerPacket{
 		ID:        id,
 		Name:      name,
@@ -34,6 +35,7 @@ func CreateAddPlayerPacket(id, name string, x, y int, heroType d2enum.Hero,
 		HeroType:  heroType,
 		Equipment: equipment,
 		Stats:     stats,
+		Skills:    skills,
 	}
 	b, _ := json.Marshal(addPlayerPacket)
 

d2networking/d2server/game_server.go

@@ -346,6 +346,7 @@ func handleClientConnection(gameServer *GameServer, client ClientConnection, x,
 		playerY,
 		playerState.HeroType,
 		playerState.Stats,
+		playerState.Skills,
 		playerState.Equipment,
 	)
 
@@ -370,6 +371,7 @@ func handleClientConnection(gameServer *GameServer, client ClientConnection, x,
 				playerY,
 				conPlayerState.HeroType,
 				conPlayerState.Stats,
+				conPlayerState.Skills,
 				conPlayerState.Equipment,
 			),
 		)