Handles Click and Hovers on most game control elements (#413) (#418)

* Handles Click and Hovers on most game control elements.

Creates a new type of "Actionable" which includes most of the bottom
bar elements. Then handles both "Click" and "Hover" into a separate
handler function.

At the moment, hover does nothing but routes correctly. Click logs
the corresponding actionable.

Known issues:
  - Not capturing button press on click (meaning player will move).
  - Basic touch detection, could be a more fancy QuadTree like struct.
  - Since the visual frames used are not just the actionable, the actual
    x, y coordinates of the actionable need to be entered statically. Changes
    in resolution would probably affect this.

* Renaming vars for code consistency and readability

CONTRIBUTORS

@@ -15,6 +15,7 @@ averrin
 Dylan "Gravestench" Knuth
 Intyre
 Gürkan Kaymak
+Maxime "malavv" Lavigne
 
 * DIABLO2 LOGO
 Jose Pardilla (th3-prophetman)

d2game/d2player/game_controls.go

@@ -2,6 +2,7 @@ package d2player
 
 import (
 	"image/color"
+	"log"
 	"time"
 
 	"github.com/OpenDiablo2/OpenDiablo2/d2common"
@@ -44,8 +45,24 @@ type GameControls struct {
 	skillIcon         *d2ui.Sprite
 	zoneChangeText    *d2ui.Label
 	isZoneTextShown   bool
+	actionableRegions []ActionableRegion
 }
 
+type ActionableType int
+type ActionableRegion struct { ActionableTypeId ActionableType; Rect d2common.Rectangle }
+
+const (
+	// Since they require special handling, not considering (1) globes, (2) content of the mini panel, (3) belt
+	leftSkill  = ActionableType(iota)
+	leftSelec  = ActionableType(iota)
+	xp         = ActionableType(iota)
+	walkRun    = ActionableType(iota)
+	stamina    = ActionableType(iota)
+	miniPanel  = ActionableType(iota)
+	rightSelec = ActionableType(iota)
+	rightSkill = ActionableType(iota)
+)
+
 func NewGameControls(hero *d2mapentity.Player, mapEngine *d2mapengine.MapEngine, mapRenderer *d2maprenderer.MapRenderer, inputListener InputCallbackListener) *GameControls {
 	d2term.BindAction("setmissile", "set missile id to summon on right click", func(id int) {
 		missileID = id
@@ -64,6 +81,16 @@ func NewGameControls(hero *d2mapentity.Player, mapEngine *d2mapengine.MapEngine,
 		heroStats:      NewHeroStats(),
 		escapeMenu:     NewEscapeMenu(),
 		zoneChangeText: &label,
+		actionableRegions: []ActionableRegion {
+			{leftSkill, d2common.Rectangle{Left:115, Top:550, Width:50, Height:50 }},
+			{leftSelec, d2common.Rectangle{Left:206, Top:563, Width:30, Height:30 }},
+			{xp,        d2common.Rectangle{Left:253, Top:560, Width:125, Height:5 }},
+			{walkRun,   d2common.Rectangle{Left:255, Top:573, Width:17, Height:20 }},
+			{stamina,   d2common.Rectangle{Left:273, Top:573, Width:105, Height:20 }},
+			{miniPanel, d2common.Rectangle{Left:393, Top:563, Width:12, Height:23 }},
+			{rightSelec,d2common.Rectangle{Left:562, Top:563, Width:30, Height:30 }},
+			{rightSkill,d2common.Rectangle{Left:634, Top:550, Width:50, Height:50 }},
+		},
 	}
 
 	d2term.BindAction("freecam", "toggle free camera movement", func() {
@@ -162,7 +189,19 @@ func (g *GameControls) OnMouseButtonRepeat(event d2input.MouseEvent) bool {
 }
 
 func (g *GameControls) OnMouseMove(event d2input.MouseMoveEvent) bool {
+	if g.escapeMenu.IsOpen() {
 		g.escapeMenu.OnMouseMove(event)
+		return false
+	}
+
+	mx, my := event.X, event.Y
+	for i := range g.actionableRegions {
+		// Mouse over a game control element
+		if g.actionableRegions[i].Rect.IsInRect(mx, my) {
+			g.onHoverActionable(g.actionableRegions[i].ActionableTypeId)
+		}
+	}
+
 	return false
 }
 
@@ -171,7 +210,16 @@ func (g *GameControls) OnMouseButtonDown(event d2input.MouseEvent) bool {
 		return g.escapeMenu.OnMouseButtonDown(event)
 	}
 
-	px, py := g.mapRenderer.ScreenToWorld(event.X, event.Y)
+	mx, my := event.X, event.Y
+	for i := range g.actionableRegions {
+		// If click is on a game control element
+		if g.actionableRegions[i].Rect.IsInRect(mx, my) {
+			g.onClickActionable(g.actionableRegions[i].ActionableTypeId)
+			return false
+		}
+	}
+
+	px, py := g.mapRenderer.ScreenToWorld(mx, my)
 	px = float64(int(px*10)) / 10.0
 	py = float64(int(py*10)) / 10.0
 
@@ -358,3 +406,43 @@ func (g *GameControls) HideZoneChangeTextAfter(delay float64) {
 func (g *GameControls) InEscapeMenu() bool {
 	return g != nil && g.escapeMenu != nil && g.escapeMenu.IsOpen()
 }
+
+// Handles what to do when an actionable is hovered
+func (g *GameControls) onHoverActionable(item ActionableType) {
+	switch item {
+	case leftSkill:
+		return
+	case leftSelec:
+		return
+	case xp:
+		return
+	case walkRun:
+		return
+	case stamina:
+		return
+	case miniPanel:
+		return
+	case rightSelec:
+		return
+	case rightSkill:
+		return
+	default:
+		log.Printf("Unrecognized ActionableType(%d) being hovered\n", item)
+	}
+}
+
+// Handles what to do when an actionable is clicked
+func (g *GameControls) onClickActionable(item ActionableType) {
+	switch item {
+	case leftSkill: log.Println("Left Skill Action Pressed")
+	case leftSelec: log.Println("Left Skill Selector Action Pressed")
+	case xp: log.Println("XP Action Pressed")
+	case walkRun: log.Println("Walk/Run Action Pressed")
+	case stamina: log.Println("Stamina Action Pressed")
+	case miniPanel: log.Println("Mini Panel Action Pressed")
+	case rightSelec: log.Println("Right Skill Selector Action Pressed")
+	case rightSkill: log.Println("Right Skill Action Pressed")
+	default:
+		log.Printf("Unrecognized ActionableType(%d) being clicked\n", item)
+	}
+}