feat: add floating emoji overlay for NPC social interactions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

client/src/scenes/GameScene.ts

@@ -3,6 +3,7 @@ import type { SocketClient } from '../network/SocketClient.js';
 import { CharacterCompositor } from '../sprites/CharacterCompositor.js';
 import { PortraitCompositor } from '../sprites/PortraitCompositor.js';
 import { NpcInfoPanel } from '../ui/NpcInfoPanel.js';
+import { InteractionEmojiManager } from '../ui/InteractionEmoji.js';
 import type { WorldState, StateUpdate, EntityState, Appearance } from '@dflike/shared';
 import { TILE_SIZE, SPRITE_FRAME_WIDTH, SPRITE_FRAME_HEIGHT, SPRITE_COLS, Direction } from '@dflike/shared';
 
@@ -25,6 +26,7 @@ export class GameScene extends Phaser.Scene {
   private followThrottle = 0;
   private portraitCompositor!: PortraitCompositor;
   private npcInfoPanel!: NpcInfoPanel;
+  private emojiManager!: InteractionEmojiManager;
 
   constructor() {
     super({ key: 'GameScene' });
@@ -39,6 +41,7 @@ export class GameScene extends Phaser.Scene {
     this.compositor = new CharacterCompositor(this);
     this.portraitCompositor = new PortraitCompositor();
     this.npcInfoPanel = new NpcInfoPanel();
+    this.emojiManager = new InteractionEmojiManager();
 
     // Draw tile grid
     this.drawWorld();
@@ -236,6 +239,19 @@ export class GameScene extends Phaser.Scene {
       }
     }
 
+    // Update interaction emojis
+    const entityPositions = new Map<number, { screenX: number; screenY: number }>();
+    const cam = this.cameras.main;
+    for (const entity of update.entities) {
+      const es = this.entitySprites.get(entity.id);
+      if (es) {
+        const screenX = (es.sprite.x - cam.scrollX) * cam.zoom;
+        const screenY = (es.sprite.y - cam.scrollY) * cam.zoom;
+        entityPositions.set(entity.id, { screenX, screenY });
+      }
+    }
+    this.emojiManager.update(update.entities, cam, entityPositions);
+
     // Live-update the follow panel if visible
     if (this.mode === 'follow' && this.npcInfoPanel.isVisible()) {
       const npcIds = this.getNpcIds();

client/src/ui/InteractionEmoji.ts

@@ -0,0 +1,97 @@
+import type { EntityState } from '@dflike/shared';
+
+const EMOJI_POSITIVE = '\u{1F60A}';
+const EMOJI_NEGATIVE = '\u{1F620}';
+
+export class InteractionEmojiManager {
+  private activeEmojis: Map<number, HTMLDivElement> = new Map();
+
+  constructor() {
+    this.ensureStylesheet();
+  }
+
+  update(
+    entities: EntityState[],
+    _camera: Phaser.Cameras.Scene2D.Camera,
+    entityPositions: Map<number, { screenX: number; screenY: number }>,
+  ): void {
+    const emoting = new Set<number>();
+
+    for (const entity of entities) {
+      if (entity.socialState?.phase === 'emoting' && entity.socialState.outcome) {
+        emoting.add(entity.id);
+        if (!this.activeEmojis.has(entity.id)) {
+          this.createEmoji(entity.id, entity.socialState.outcome);
+        }
+      }
+    }
+
+    // Remove emojis for entities no longer emoting
+    for (const [entityId, el] of this.activeEmojis) {
+      if (!emoting.has(entityId)) {
+        el.remove();
+        this.activeEmojis.delete(entityId);
+      }
+    }
+
+    // Update positions
+    for (const [entityId, el] of this.activeEmojis) {
+      const pos = entityPositions.get(entityId);
+      if (pos) {
+        el.style.left = `${pos.screenX}px`;
+        el.style.top = `${pos.screenY}px`;
+      }
+    }
+  }
+
+  private createEmoji(entityId: number, outcome: string): void {
+    const div = document.createElement('div');
+    div.style.cssText = `
+      position: fixed;
+      font-size: 24px;
+      pointer-events: none;
+      z-index: 999;
+      transform: translate(-50%, -100%);
+    `;
+    div.style.animation = 'emoji-float 2s ease-out forwards';
+    div.textContent = outcome === 'positive' ? EMOJI_POSITIVE : EMOJI_NEGATIVE;
+
+    document.body.appendChild(div);
+    this.activeEmojis.set(entityId, div);
+  }
+
+  private ensureStylesheet(): void {
+    if (document.getElementById('emoji-float-style')) return;
+
+    const style = document.createElement('style');
+    style.id = 'emoji-float-style';
+    style.textContent = `
+      @keyframes emoji-float {
+        0% {
+          transform: translate(-50%, -100%) translateY(0);
+          opacity: 1;
+        }
+        75% {
+          opacity: 1;
+        }
+        100% {
+          transform: translate(-50%, -100%) translateY(-20px);
+          opacity: 0;
+        }
+      }
+    `;
+    document.head.appendChild(style);
+  }
+
+  destroy(): void {
+    for (const [, el] of this.activeEmojis) {
+      el.remove();
+    }
+    this.activeEmojis.clear();
+
+    const style = document.getElementById('emoji-float-style');
+    if (style) {
+      style.remove();
+    }
+  }
+}