Add deletion duration and indicators (#2216)

## Description:

Adds a timer before self deleting units
Adds a loading bar under deleting units
Adds a timer in radial menu for clarity purposes


![deletecd](https://github.com/user-attachments/assets/613bf742-ef90-42b5-a258-b928daae6aaa)

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

Mr.Box

---------

Co-authored-by: Evan <evanpelle@gmail.com>

src/client/graphics/layers/RadialMenu.ts

@@ -550,6 +550,20 @@ export class RadialMenu implements Layer {
             .attr("x", arc.centroid(d)[0] - this.config.iconSize / 2)
             .attr("y", arc.centroid(d)[1] - this.config.iconSize / 2)
             .attr("opacity", disabled ? 0.5 : 1);
+
+          if (this.params && d.data.cooldown?.(this.params)) {
+            const cooldown = Math.ceil(d.data.cooldown?.(this.params));
+            content
+              .append("text")
+              .attr("class", `cooldown-text`)
+              .text(cooldown + "s")
+              .attr("fill", "white")
+              .attr("opacity", disabled ? 0.5 : 1)
+              .attr("font-size", "14px")
+              .attr("font-weight", "bold")
+              .attr("x", arc.centroid(d)[0] - this.config.iconSize / 4)
+              .attr("y", arc.centroid(d)[1] + this.config.iconSize / 2 + 7);
+          }
         }
 
         this.menuIcons.set(contentId, content as any);
@@ -994,6 +1008,17 @@ export class RadialMenu implements Layer {
           if (!imageElement.empty()) {
             imageElement.attr("opacity", disabled ? 0.5 : 1);
           }
+
+          // Update cooldown text if applicable
+          const cooldownElement = icon.select(".cooldown-text");
+          if (this.params && !cooldownElement.empty() && item.cooldown) {
+            const cooldown = Math.ceil(item.cooldown(this.params));
+            if (cooldown <= 0) {
+              cooldownElement.remove();
+            } else {
+              cooldownElement.text(cooldown + "s");
+            }
+          }
         }
       }
     });

src/client/graphics/layers/RadialMenuElements.ts

@@ -51,6 +51,7 @@ export interface MenuElement {
   tooltipItems?: TooltipItem[];
   tooltipKeys?: TooltipKey[];
 
+  cooldown?: (params: MenuElementParams) => number;
   disabled: (params: MenuElementParams) => boolean;
   action?: (params: MenuElementParams) => void; // For leaf items that perform actions
   subMenu?: (params: MenuElementParams) => MenuElement[]; // For non-leaf items that open submenus
@@ -425,6 +426,7 @@ export const attackMenuElement: MenuElement = {
 export const deleteUnitElement: MenuElement = {
   id: Slot.Delete,
   name: "delete",
+  cooldown: (params: MenuElementParams) => params.myPlayer.deleteUnitCooldown(),
   disabled: (params: MenuElementParams) => {
     const tileOwner = params.game.owner(params.tile);
     const isLand = params.game.isLand(params.tile);
@@ -441,7 +443,7 @@ export const deleteUnitElement: MenuElement = {
       return true;
     }
 
-    if (!params.myPlayer.canDeleteUnit()) {
+    if (params.myPlayer.deleteUnitCooldown() > 0) {
       return true;
     }
 
@@ -450,8 +452,10 @@ export const deleteUnitElement: MenuElement = {
       .units()
       .filter(
         (unit) =>
+          unit.constructionType() === undefined &&
+          unit.markedForDeletion() === false &&
           params.game.manhattanDist(unit.tile(), params.tile) <=
-          DELETE_SELECTION_RADIUS,
+            DELETE_SELECTION_RADIUS,
       );
 
     return myUnits.length === 0;

src/client/graphics/layers/StructureDrawingUtils.ts

@@ -99,10 +99,7 @@ export class SpriteFactory {
 
   private invalidateTextureCache(unitType: UnitType) {
     for (const key of Array.from(this.textureCache.keys())) {
-      if (
-        key.endsWith(`-${unitType}-icon`) ||
-        key === `construction-${unitType}-icon`
-      ) {
+      if (key.includes(`-${unitType}`)) {
         this.textureCache.delete(key);
       }
     }
@@ -115,7 +112,13 @@ export class SpriteFactory {
     structureType: UnitType,
   ): PIXI.Container {
     const parentContainer = new PIXI.Container();
-    const texture = this.createTexture(structureType, player, false, true);
+    const texture = this.createTexture(
+      structureType,
+      player,
+      false,
+      false,
+      true,
+    );
     const sprite = new PIXI.Sprite(texture);
     sprite.anchor.set(0.5);
     sprite.alpha = 0.5;
@@ -139,6 +142,7 @@ export class SpriteFactory {
     const worldPos = new Cell(this.game.x(tile), this.game.y(tile));
     const screenPos = this.transformHandler.worldToScreenCoordinates(worldPos);
 
+    const isMarkedForDeletion = unit.markedForDeletion() !== false;
     const isConstruction = unit.type() === UnitType.Construction;
     const constructionType = unit.constructionType();
     const structureType = isConstruction ? constructionType! : unit.type();
@@ -156,6 +160,7 @@ export class SpriteFactory {
         structureType,
         unit.owner(),
         isConstruction,
+        isMarkedForDeletion,
         type === "icon",
       );
       const sprite = new PIXI.Sprite(texture);
@@ -202,19 +207,30 @@ export class SpriteFactory {
     type: UnitType,
     owner: PlayerView,
     isConstruction: boolean,
+    isMarkedForDeletion: boolean,
     renderIcon: boolean,
   ): PIXI.Texture {
-    const cacheKey = isConstruction
-      ? `construction-${type}` + (renderIcon ? "-icon" : "")
-      : `${this.theme.territoryColor(owner).toRgbString()}-${type}` +
-        (renderIcon ? "-icon" : "");
+    const cacheKeyBase = isConstruction
+      ? `construction-${type}`
+      : `${this.theme.territoryColor(owner).toRgbString()}-${type}`;
+    const cacheKey =
+      cacheKeyBase +
+      (renderIcon ? "-icon" : "") +
+      (isMarkedForDeletion ? "-deleted" : "");
 
     if (this.textureCache.has(cacheKey)) {
       return this.textureCache.get(cacheKey)!;
     }
     const shape = STRUCTURE_SHAPES[type];
     const texture = shape
-      ? this.createIcon(owner, type, isConstruction, shape, renderIcon)
+      ? this.createIcon(
+          owner,
+          type,
+          isConstruction,
+          isMarkedForDeletion,
+          shape,
+          renderIcon,
+        )
       : PIXI.Texture.EMPTY;
     this.textureCache.set(cacheKey, texture);
     return texture;
@@ -224,6 +240,7 @@ export class SpriteFactory {
     owner: PlayerView,
     structureType: UnitType,
     isConstruction: boolean,
+    isMarkedForDeletion: boolean,
     shape: string,
     renderIcon: boolean,
   ): PIXI.Texture {
@@ -370,11 +387,8 @@ export class SpriteFactory {
     }
 
     const structureInfo = this.structuresInfos.get(structureType);
-    if (!structureInfo?.image) {
-      return PIXI.Texture.from(structureCanvas);
-    }
 
-    if (renderIcon) {
+    if (structureInfo?.image && renderIcon) {
       const SHAPE_OFFSETS = {
         triangle: [6, 11],
         square: [5, 5],
@@ -390,6 +404,22 @@ export class SpriteFactory {
         offsetY,
       );
     }
+
+    if (isMarkedForDeletion) {
+      context.save();
+      context.strokeStyle = "rgba(255, 64, 64, 0.95)";
+      context.lineWidth = Math.max(2, Math.round(iconSize * 0.12));
+      context.lineCap = "round";
+      const padding = Math.max(2, iconSize * 0.12);
+      context.beginPath();
+      context.moveTo(padding, padding);
+      context.lineTo(iconSize - padding, iconSize - padding);
+      context.moveTo(iconSize - padding, padding);
+      context.lineTo(padding, iconSize - padding);
+      context.stroke();
+      context.restore();
+    }
+
     return PIXI.Texture.from(structureCanvas);
   }
 

src/client/graphics/layers/StructureIconsLayer.ts

@@ -417,6 +417,7 @@ export class StructureIconsLayer implements Layer {
       const render = this.findRenderByUnit(unitView);
       if (render) {
         this.checkForConstructionState(render, unitView);
+        this.checkForDeletionState(render, unitView);
         this.checkForOwnershipChange(render, unitView);
         this.checkForLevelChange(render, unitView);
       }
@@ -466,6 +467,16 @@ export class StructureIconsLayer implements Layer {
     }
   }
 
+  private checkForDeletionState(render: StructureRenderInfo, unit: UnitView) {
+    if (unit.markedForDeletion() !== false) {
+      render.iconContainer?.destroy();
+      render.dotContainer?.destroy();
+      render.iconContainer = this.createIconSprite(unit);
+      render.dotContainer = this.createDotSprite(unit);
+      this.modifyVisibility(render);
+    }
+  }
+
   private checkForConstructionState(
     render: StructureRenderInfo,
     unit: UnitView,

src/client/graphics/layers/UILayer.ts

@@ -117,11 +117,18 @@ export class UILayer implements Layer {
         this.drawHealthBar(unit);
         break;
       }
+      case UnitType.City:
+      case UnitType.Factory:
+      case UnitType.DefensePost:
+      case UnitType.Port:
       case UnitType.MissileSilo:
-        this.createLoadingBar(unit);
-        break;
       case UnitType.SAMLauncher:
-        this.createLoadingBar(unit);
+        if (
+          unit.markedForDeletion() !== false ||
+          unit.missileReadinesss() < 1
+        ) {
+          this.createLoadingBar(unit);
+        }
         break;
       default:
         return;
@@ -329,12 +336,28 @@ export class UILayer implements Layer {
       }
       case UnitType.MissileSilo:
       case UnitType.SAMLauncher:
-        return unit.missileReadinesss();
+        return !unit.markedForDeletion()
+          ? unit.missileReadinesss()
+          : this.deletionProgress(this.game, unit);
+      case UnitType.City:
+      case UnitType.Factory:
+      case UnitType.Port:
+      case UnitType.DefensePost:
+        return this.deletionProgress(this.game, unit);
       default:
         return 1;
     }
   }
 
+  private deletionProgress(game: GameView, unit: UnitView): number {
+    const deleteAt = unit.markedForDeletion();
+    if (deleteAt === false) return 1;
+    return Math.max(
+      0,
+      (deleteAt - game.ticks()) / game.config().deletionMarkDuration(),
+    );
+  }
+
   public createLoadingBar(unit: UnitView) {
     if (!this.context) {
       return;

src/core/configuration/Config.ts

@@ -130,6 +130,7 @@ export interface Config {
   emojiMessageCooldown(): Tick;
   emojiMessageDuration(): Tick;
   donateCooldown(): Tick;
+  deletionMarkDuration(): Tick;
   deleteUnitCooldown(): Tick;
   defaultDonationAmount(sender: Player): number;
   unitInfo(type: UnitType): UnitInfo;

src/core/configuration/DefaultConfig.ts

@@ -569,6 +569,9 @@ export class DefaultConfig implements Config {
   donateCooldown(): Tick {
     return 10 * 10;
   }
+  deletionMarkDuration(): Tick {
+    return 15 * 10;
+  }
   deleteUnitCooldown(): Tick {
     return 5 * 10;
   }

src/core/execution/DeleteUnitExecution.ts

@@ -1,8 +1,9 @@
-import { Execution, Game, MessageType, Player } from "../game/Game";
+import { Execution, Game, MessageType, Player, Unit } from "../game/Game";
 
 export class DeleteUnitExecution implements Execution {
   private active: boolean = true;
   private mg: Game;
+  private unit: Unit | null = null;
 
   constructor(
     private player: Player,
@@ -33,6 +34,7 @@ export class DeleteUnitExecution implements Execution {
       this.active = false;
       return;
     }
+    this.unit = unit;
 
     const tileOwner = mg.owner(unit.tile());
     if (!tileOwner.isPlayer() || tileOwner.id() !== this.player.id()) {
@@ -61,19 +63,29 @@ export class DeleteUnitExecution implements Execution {
       return;
     }
 
-    unit.delete(false);
     this.player.recordDeleteUnit();
-
-    this.mg.displayMessage(
-      `events_display.unit_voluntarily_deleted`,
-      MessageType.UNIT_DESTROYED,
-      this.player.id(),
-    );
-
-    this.active = false;
+    unit.markForDeletion();
   }
 
-  tick(ticks: number) {}
+  tick(ticks: number) {
+    if (!this.active || !this.unit) {
+      return;
+    }
+    if (!this.unit.isActive()) {
+      this.active = false;
+      return;
+    }
+    if (this.unit.isOverdueDeletion()) {
+      this.unit.delete(false);
+
+      this.mg.displayMessage(
+        `events_display.unit_voluntarily_deleted`,
+        MessageType.UNIT_DESTROYED,
+        this.player.id(),
+      );
+      this.active = false;
+    }
+  }
 
   isActive(): boolean {
     return this.active;

src/core/execution/UpgradeStructureExecution.ts

@@ -19,7 +19,7 @@ export class UpgradeStructureExecution implements Execution {
       return;
     }
 
-    if (!this.player.canUpgradeUnit(this.structure.type())) {
+    if (!this.player.canUpgradeUnit(this.structure)) {
       console.warn(
         `[UpgradeStructureExecution] unit type ${this.structure.type()} cannot be upgraded`,
       );

src/core/game/Game.ts

@@ -432,6 +432,9 @@ export interface Unit {
   type(): UnitType;
   owner(): Player;
   info(): UnitInfo;
+  isMarkedForDeletion(): boolean;
+  markForDeletion(): void;
+  isOverdueDeletion(): boolean;
   delete(displayMessage?: boolean, destroyer?: Player): void;
   tile(): TileRef;
   lastTile(): TileRef;
@@ -573,7 +576,7 @@ export interface Player {
   // New units of the same type can upgrade existing units.
   // e.g. if a place a new city here, can it upgrade an existing city?
   findUnitToUpgrade(type: UnitType, targetTile: TileRef): Unit | false;
-  canUpgradeUnit(unitType: UnitType): boolean;
+  canUpgradeUnit(unit: Unit): boolean;
   upgradeUnit(unit: Unit): void;
   captureUnit(unit: Unit): void;
 

src/core/game/GameUpdates.ts

@@ -123,6 +123,7 @@ export interface UnitUpdate {
   reachedTarget: boolean;
   retreating: boolean;
   targetable: boolean;
+  markedForDeletion: number | false;
   targetUnitId?: number; // Only for trade ships
   targetTile?: TileRef; // Only for nukes
   health?: number;

src/core/game/GameView.ts

@@ -87,6 +87,10 @@ export class UnitView {
     return this.data.targetable;
   }
 
+  markedForDeletion(): number | false {
+    return this.data.markedForDeletion;
+  }
+
   type(): UnitType {
     return this.data.unitType;
   }
@@ -430,10 +434,13 @@ export class PlayerView {
     return this.data.lastDeleteUnitTick;
   }
 
-  canDeleteUnit(): boolean {
+  deleteUnitCooldown(): number {
     return (
-      this.game.ticks() + 1 - this.lastDeleteUnitTick() >=
-      this.game.config().deleteUnitCooldown()
+      Math.max(
+        0,
+        this.game.config().deleteUnitCooldown() -
+          (this.game.ticks() + 1 - this.lastDeleteUnitTick()),
+      ) / 10
     );
   }
 }
@@ -573,7 +580,7 @@ export class GameView implements GameMap {
     tile: TileRef,
     searchRange: number,
     type: UnitType,
-    playerId: PlayerID,
+    playerId?: PlayerID,
   ) {
     return this.unitGrid.hasUnitNearby(tile, searchRange, type, playerId);
   }

src/core/game/PlayerImpl.ts

@@ -853,20 +853,23 @@ export class PlayerImpl implements Player {
       return false;
     }
     const unit = existing[0].unit;
-    if (!this.canUpgradeUnit(unit.type())) {
+    if (!this.canUpgradeUnit(unit)) {
       return false;
     }
     return unit;
   }
 
-  public canUpgradeUnit(unitType: UnitType): boolean {
-    if (!this.mg.config().unitInfo(unitType).upgradable) {
+  public canUpgradeUnit(unit: Unit): boolean {
+    if (unit.isMarkedForDeletion()) {
       return false;
     }
-    if (this.mg.config().isUnitDisabled(unitType)) {
+    if (!this.mg.config().unitInfo(unit.type()).upgradable) {
       return false;
     }
-    if (this._gold < this.mg.config().unitInfo(unitType).cost(this)) {
+    if (this.mg.config().isUnitDisabled(unit.type())) {
+      return false;
+    }
+    if (this._gold < this.mg.config().unitInfo(unit.type()).cost(this)) {
       return false;
     }
     return true;

src/core/game/UnitImpl.ts

@@ -39,6 +39,7 @@ export class UnitImpl implements Unit {
   // Nuke only
   private _trajectoryIndex: number = 0;
   private _trajectory: TrajectoryTile[];
+  private _deletionAt: number | null = null;
 
   constructor(
     private _type: UnitType,
@@ -126,6 +127,7 @@ export class UnitImpl implements Unit {
       reachedTarget: this._reachedTarget,
       retreating: this._retreating,
       pos: this._tile,
+      markedForDeletion: this._deletionAt ?? false,
       targetable: this._targetable,
       lastPos: this._lastTile,
       health: this.hasHealth() ? Number(this._health) : undefined,
@@ -182,6 +184,7 @@ export class UnitImpl implements Unit {
   }
 
   setOwner(newOwner: PlayerImpl): void {
+    this.clearPendingDeletion();
     switch (this._type) {
       case UnitType.Warship:
       case UnitType.Port:
@@ -221,6 +224,30 @@ export class UnitImpl implements Unit {
     }
   }
 
+  clearPendingDeletion(): void {
+    this._deletionAt = null;
+  }
+
+  isMarkedForDeletion(): boolean {
+    return this._deletionAt !== null;
+  }
+
+  markForDeletion(): void {
+    if (!this.isActive()) {
+      return;
+    }
+    this._deletionAt =
+      this.mg.ticks() + this.mg.config().deletionMarkDuration();
+    this.mg.addUpdate(this.toUpdate());
+  }
+
+  isOverdueDeletion(): boolean {
+    if (!this.isActive()) {
+      return false;
+    }
+    return this._deletionAt !== null && this.mg.ticks() - this._deletionAt > 0;
+  }
+
   delete(displayMessage?: boolean, destroyer?: Player): void {
     if (!this.isActive()) {
       throw new Error(`cannot delete ${this} not active`);

tests/DeleteUnitExecution.test.ts

@@ -10,6 +10,7 @@ import {
 } from "../src/core/game/Game";
 import { TileRef } from "../src/core/game/GameMap";
 import { setup } from "./util/Setup";
+import { executeTicks } from "./util/utils";
 
 describe("DeleteUnitExecution Security Tests", () => {
   let game: Game;
@@ -79,6 +80,7 @@ describe("DeleteUnitExecution Security Tests", () => {
       execution.init(game, 0);
 
       expect(execution.isActive()).toBe(false);
+      expect(enemyUnit.isMarkedForDeletion()).toBe(false);
     });
 
     it("should prevent deleting units on enemy territory", () => {
@@ -90,6 +92,7 @@ describe("DeleteUnitExecution Security Tests", () => {
         execution.init(game, 0);
 
         expect(execution.isActive()).toBe(false);
+        expect(unit.isMarkedForDeletion()).toBe(false);
       }
     });
 
@@ -100,15 +103,7 @@ describe("DeleteUnitExecution Security Tests", () => {
       execution.init(game, 0);
 
       expect(execution.isActive()).toBe(false);
-    });
-
-    it("should allow deleting the last city (suicide)", () => {
-      jest.spyOn(game, "inSpawnPhase").mockReturnValue(false);
-
-      const execution = new DeleteUnitExecution(player, unit.id());
-      execution.init(game, 0);
-
-      expect(unit.isActive()).toBe(false);
+      expect(unit.isMarkedForDeletion()).toBe(false);
     });
 
     it("should allow deleting units when all conditions are met", () => {
@@ -117,7 +112,32 @@ describe("DeleteUnitExecution Security Tests", () => {
       const execution = new DeleteUnitExecution(player, unit.id());
       execution.init(game, 0);
 
+      expect(unit.isMarkedForDeletion()).toBe(true);
+    });
+
+    it("should delete after deletion delay", () => {
+      jest.spyOn(game, "inSpawnPhase").mockReturnValue(false);
+
+      const execution = new DeleteUnitExecution(player, unit.id());
+      game.addExecution(execution);
+
+      game.executeNextTick();
+      expect(unit.isMarkedForDeletion()).toBe(true);
+      expect(unit.isOverdueDeletion()).toBe(false);
+      executeTicks(game, game.config().deletionMarkDuration() + 1);
       expect(unit.isActive()).toBe(false);
     });
+
+    it("should reset deletion if captured", () => {
+      jest.spyOn(game, "inSpawnPhase").mockReturnValue(false);
+
+      const execution = new DeleteUnitExecution(player, unit.id());
+      game.addExecution(execution);
+      game.executeNextTick();
+      expect(unit.isMarkedForDeletion()).toBe(true);
+      unit.setOwner(enemyPlayer);
+      expect(unit.isMarkedForDeletion()).toBe(false);
+      expect(unit.isActive()).toBe(true);
+    });
   });
 });

tests/util/TestConfig.ts

@@ -46,6 +46,10 @@ export class TestConfig extends DefaultConfig {
     return 20;
   }
 
+  deletionMarkDuration(): number {
+    return 5;
+  }
+
   defaultSamRange(): number {
     return 20;
   }