Replace Unicode emoji rendering with Apple-style 32x32 PNG sprite system including Node.js test support

games/tribe/public/assets/sprites/emojis/README.md

@@ -0,0 +1,82 @@
+# Emoji Sprites
+
+This directory contains 32x32 pixel PNG sprites that replace Unicode emoji rendering throughout the tribe game.
+
+## Naming Convention
+
+Sprite files use descriptive snake_case names rather than Unicode characters:
+- `crown.png` - 👑 (tribe badge)
+- `skull.png` - 💀 (tribe badge)
+- `handshake.png` - 🤝 (friendly diplomacy)
+- `crossed_swords.png` - ⚔️ (hostile diplomacy or attack action)
+
+## Sprite Categories
+
+### Tribe Badge Sprites
+Used for identifying different tribes in the game:
+- `crown.png` - 👑 Royal/leadership tribe
+- `skull.png` - 💀 Death/warrior tribe  
+- `fire.png` - 🔥 Fire tribe
+- `water_drop.png` - 💧 Water tribe
+- `shamrock.png` - ☘️ Nature/luck tribe
+- `sun.png` - ☀️ Solar tribe
+- `crescent_moon.png` - 🌙 Lunar tribe
+- `star.png` - ⭐ Star tribe
+- `lightning.png` - ⚡ Storm tribe
+- `fleur_de_lis.png` - ⚜️ Noble tribe
+
+### Diplomacy Status Sprites
+Used in tribe list UI to show relationships:
+- `handshake.png` - 🤝 Friendly status
+- `crossed_swords.png` - ⚔️ Hostile status
+
+### Player Action Sprites
+Used for player commands and autopilot actions:
+- `raised_hand.png` - ✋ Gather action
+- `meat.png` - 🍖 Eat action  
+- `heart.png` - ❤️ Procreate action
+- `crossed_swords.png` - ⚔️ Attack action (reused)
+- `seedling.png` - 🌱 Plant action
+- `megaphone.png` - 📢 Call to attack
+- `trident.png` - 🔱 Split tribe
+- `right_arrow.png` - ➡️ Follow me
+- `man_feeding_child.png` - 👨‍👧 Feed child
+- `bullseye.png` - 🎯 Autopilot move
+
+### Status Indicator Sprites
+Used in UI status bars and displays:
+- `calendar.png` - 🗓️ Time indicator
+- `meat.png` - 🍖 Hunger indicator (reused)
+- `heart.png` - ❤️ Hitpoints indicator (reused)
+- `strawberry.png` - 🍓 Food indicator
+- `robot.png` - 🤖 Autopilot indicator
+
+### Visual Effect Sprites
+Used for floating visual effects during gameplay:
+- `baby_bottle.png` - 🍼 Child fed effect
+- `shield.png` - 🛡️ Attack deflected effect
+- `muscle.png` - 💪 Attack resisted effect
+- `explosion.png` - 💥 Hit effect
+
+## Usage in Code
+
+### Main Files Using Sprites:
+- `src/game/render/render-effects.ts` - Visual effects rendering
+- `src/game/render/ui/render-tribe-list.ts` - Tribe badges and diplomacy
+- `src/game/render/ui/render-buttons.ts` - Player action buttons
+- `src/game/render/ui/render-top-left-panel.ts` - Status indicators
+- `src/game/ui/ui-types.ts` - Emoji mappings configuration
+
+### Sprite Loading:
+Sprites are loaded through `src/game/sprites/sprite-loader.ts` which preloads all images and provides a sprite cache for rendering functions.
+
+### Rendering:
+The `drawSprite()` function replaces `ctx.fillText()` calls for emoji rendering, supporting the same positioning and scaling used by the original emoji system.
+
+## Technical Notes
+
+- All sprites are 32x32 pixels with transparent backgrounds
+- PNG format for best quality and transparency support
+- Sprites use distinctive colors and shapes for clear recognition
+- Fallback system in place for missing sprites (shows colored circle with letter)
+- Compatible with existing floating effect animations (fade, rise up, etc.)

games/tribe/src/components/game-render.tsx

@@ -3,6 +3,7 @@ import { GameWorldState } from '../game/world-types';
 import { renderGame } from '../game/render';
 import { Vector2D } from '../game/utils/math-types';
 import { PlayerActionHint } from '../game/ui/ui-types';
+import { preloadSprites } from '../game/sprites/sprite-loader';
 
 interface GameRenderProps {
   canvasRef: React.RefObject<HTMLCanvasElement>;
@@ -26,6 +27,11 @@ export const GameRender: React.FC<GameRenderProps> = ({
     if (!canvas) return;
     ctxRef.current = canvas.getContext('2d');
 
+    // Preload sprites when component mounts
+    preloadSprites().catch(error => {
+      console.warn('Failed to preload some sprites, fallback rendering will be used:', error);
+    });
+
     const handleResize = () => {
       if (canvas && ctxRef.current && gameStateRef.current) {
         canvas.width = window.innerWidth;

games/tribe/src/game/render/render-effects.ts

@@ -1,5 +1,6 @@
 import { VisualEffect, VisualEffectType } from '../visual-effects/visual-effect-types';
 import { Vector2D } from '../utils/math-types';
+import { drawSpriteWithEffect } from '../sprites/sprite-loader';
 
 const EFFECT_BASE_RADIUS = 15;
 
@@ -87,12 +88,22 @@ function drawEmoji(ctx: CanvasRenderingContext2D, effect: VisualEffect, currentT
   const opacity = 1 - progress;
   const yOffset = -20 * progress; // Rise up
 
-  ctx.save();
-  ctx.globalAlpha = opacity;
-  ctx.font = '20px Arial';
-  ctx.textAlign = 'center';
-  ctx.fillText(emoji, effect.position.x, effect.position.y + yOffset);
-  ctx.restore();
+  // Use sprite-based rendering with fallback to text
+  const spriteRendered = drawSpriteWithEffect(
+    ctx,
+    emoji,
+    effect.position.x,
+    effect.position.y,
+    opacity,
+    yOffset,
+    20 // Size of the sprite for effects
+  );
+
+  // If sprite rendering failed, log for debugging but don't fallback
+  // The drawSpriteWithEffect function already handles fallback internally
+  if (!spriteRendered) {
+    console.debug(`Sprite rendering fallback used for emoji: ${emoji}`);
+  }
 }
 
 export function renderVisualEffect(ctx: CanvasRenderingContext2D, effect: VisualEffect, currentTime: number): void {

games/tribe/src/game/render/render.test.ts

@@ -5,9 +5,13 @@ import * as path from 'path';
 import { initGame } from '../index';
 import { renderGame } from '../render';
 import { GameWorldState } from '../world-types';
+import { preloadSprites } from '../sprites/sprite-loader';
 
 describe('Game Rendering', () => {
-  it('should render the game world to a canvas and save it', () => {
+  it('should render the game world to a canvas and save it', async () => {
+    // Preload sprites first (works in both browser and Node.js now)
+    await preloadSprites();
+
     // Initialize the game state
     const gameState: GameWorldState = initGame();
 
@@ -35,7 +39,7 @@ describe('Game Rendering', () => {
     // Save the canvas buffer to a file
     const buffer = canvas.toBuffer('image/png');
     const outputPath = path.resolve(
-      '/Users/gtanczyk/src/www.gamedev.pl/games/tribe/src/game/render',
+      __dirname,
       'render-test-output.png',
     );
     fs.writeFileSync(outputPath, new Uint8Array(buffer));

games/tribe/src/game/render/ui/render-autopilot-indicator.ts

@@ -10,6 +10,7 @@ import {
 } from '../../world-consts';
 import { GameWorldState } from '../../world-types';
 import { findPlayerEntity } from '../../utils/world-utils';
+import { drawSprite } from '../../sprites/sprite-loader';
 
 function drawIndicator(
   ctx: CanvasRenderingContext2D,
@@ -37,12 +38,24 @@ function drawIndicator(
   const emoji = PLAYER_ACTION_EMOJIS[action];
   const name = PLAYER_ACTION_NAMES[action];
   if (emoji) {
-    ctx.font = `${PLAYER_ACTION_HINT_FONT_SIZE * 1.5}px "Press Start 2P", Arial`;
-    ctx.textAlign = 'center';
-    ctx.textBaseline = 'middle';
     const textY = position.y - circleRadius - 25;
-    ctx.fillText(emoji, position.x, textY);
+    const emojiSize = PLAYER_ACTION_HINT_FONT_SIZE * 1.5;
+
+    // Try to render emoji as sprite
+    const spriteRendered = drawSprite(ctx, emoji, position.x, textY, emojiSize);
+
+    if (!spriteRendered) {
+      // Fallback to text rendering
+      ctx.font = `${emojiSize}px "Press Start 2P", Arial`;
+      ctx.textAlign = 'center';
+      ctx.textBaseline = 'middle';
+      ctx.fillText(emoji, position.x, textY);
+    }
+
+    // Draw action name
     ctx.font = `${PLAYER_ACTION_HINT_FONT_SIZE * 0.8}px "Press Start 2P", Arial`;
+    ctx.textAlign = 'center';
+    ctx.textBaseline = 'middle';
     ctx.fillText(name, position.x, textY + 25);
   }
 

games/tribe/src/game/render/ui/render-buttons.ts

@@ -26,6 +26,7 @@ import { AutopilotControls, GameWorldState } from '../../world-types.js';
 import { ClickableUIButton, PlayerActionType, PLAYER_ACTION_EMOJIS, UIButtonActionType } from '../../ui/ui-types';
 import { Rect2D, Vector2D } from '../../utils/math-types';
 import { findPlayerEntity, getAvailablePlayerActions } from '../../utils/world-utils';
+import { drawSprite } from '../../sprites/sprite-loader';
 
 function drawButton(ctx: CanvasRenderingContext2D, button: ClickableUIButton, isHovered: boolean): void {
   ctx.save();
@@ -85,11 +86,20 @@ function drawButton(ctx: CanvasRenderingContext2D, button: ClickableUIButton, is
   ctx.fillStyle = button.isDisabled ? UI_BUTTON_DISABLED_TEXT_COLOR : button.textColor;
 
   if (button.icon) {
-    // Render large icon in the center
-    ctx.font = `${height * 0.55}px "Press Start 2P", Arial`;
-    ctx.textAlign = 'center';
-    ctx.textBaseline = 'middle';
-    ctx.fillText(button.icon, x + width / 2, y + height / 2);
+    // Try to render icon as sprite first
+    const iconSize = height * 0.55;
+    const iconX = x + width / 2;
+    const iconY = y + height / 2;
+
+    const spriteRendered = drawSprite(ctx, button.icon, iconX, iconY, iconSize);
+
+    if (!spriteRendered) {
+      // Fallback to text rendering
+      ctx.font = `${iconSize}px "Press Start 2P", Arial`;
+      ctx.textAlign = 'center';
+      ctx.textBaseline = 'middle';
+      ctx.fillText(button.icon, iconX, iconY);
+    }
 
     // Render small text in the bottom right corner
     if (button.text) {

games/tribe/src/game/render/ui/render-top-left-panel.ts

@@ -25,6 +25,24 @@ import { drawFoodBar, drawProgressBar } from './render-bars';
 import { drawFamilyMemberBar, renderMiniatureCharacter } from './render-characters-ui';
 import { EntityId } from '../../entities/entities-types';
 import { Rect2D } from '../../utils/math-types';
+import { drawSprite } from '../../sprites/sprite-loader';
+
+/**
+ * Helper function to render status icons using sprites with fallback to text
+ */
+function renderStatusIcon(ctx: CanvasRenderingContext2D, emoji: string, x: number, y: number, size: number = UI_FONT_SIZE): boolean {
+  const spriteRendered = drawSprite(ctx, emoji, x + size / 2, y, size);
+  if (!spriteRendered) {
+    // Fallback to text rendering
+    ctx.save();
+    ctx.font = `${size}px Arial`;
+    ctx.textAlign = 'left';
+    ctx.textBaseline = 'middle';
+    ctx.fillText(emoji, x, y);
+    ctx.restore();
+  }
+  return spriteRendered;
+}
 
 export function renderTopLeftPanel(
   ctx: CanvasRenderingContext2D,
@@ -47,7 +65,7 @@ export function renderTopLeftPanel(
   const iconTextPadding = 25;
   const barX = UI_PADDING + iconTextPadding;
 
-  ctx.fillText(timeEmoji, UI_PADDING, uiLineY + UI_BAR_HEIGHT / 2 + UI_FONT_SIZE / 3);
+  renderStatusIcon(ctx, timeEmoji, UI_PADDING, uiLineY + UI_BAR_HEIGHT / 2 + UI_FONT_SIZE / 3);
   drawProgressBar(
     ctx,
     barX,
@@ -184,7 +202,7 @@ export function renderTopLeftPanel(
   const emojiY = uiLineY + UI_FAMILY_MEMBER_ICON_SIZE / 2;
   ctx.font = `${UI_FONT_SIZE}px "Press Start 2P", Arial`;
   ctx.textBaseline = 'middle';
-  ctx.fillText(familyEmoji, UI_PADDING, emojiY);
+  renderStatusIcon(ctx, familyEmoji, UI_PADDING, emojiY);
 
   const familyBarY = uiLineY + UI_FAMILY_MEMBER_ICON_SIZE / 2; // Center the single row
 
@@ -202,7 +220,7 @@ export function renderTopLeftPanel(
 
   // Hitpoints Bar
   const hpEmoji = UI_STATUS_EMOJIS[UIStatusType.Hitpoints];
-  ctx.fillText(hpEmoji, UI_PADDING, uiLineY + UI_BAR_HEIGHT / 2 + UI_FONT_SIZE / 3);
+  renderStatusIcon(ctx, hpEmoji, UI_PADDING, uiLineY + UI_BAR_HEIGHT / 2 + UI_FONT_SIZE / 3);
   drawProgressBar(
     ctx,
     barX,
@@ -217,7 +235,7 @@ export function renderTopLeftPanel(
 
   // Hunger Bar
   const hungerEmoji = UI_STATUS_EMOJIS[UIStatusType.Hunger];
-  ctx.fillText(hungerEmoji, UI_PADDING, uiLineY + UI_BAR_HEIGHT / 2 + UI_FONT_SIZE / 3);
+  renderStatusIcon(ctx, hungerEmoji, UI_PADDING, uiLineY + UI_BAR_HEIGHT / 2 + UI_FONT_SIZE / 3);
   drawProgressBar(
     ctx,
     barX,
@@ -239,7 +257,7 @@ export function renderTopLeftPanel(
   // Food Bar
   ctx.textBaseline = 'middle';
   const foodEmoji = UI_STATUS_EMOJIS[UIStatusType.Food];
-  ctx.fillText(foodEmoji, UI_PADDING, uiLineY + UI_BERRY_ICON_SIZE / 2);
+  renderStatusIcon(ctx, foodEmoji, UI_PADDING, uiLineY + UI_BERRY_ICON_SIZE / 2);
   drawFoodBar(
     ctx,
     barX, // Use the same X as other bars for alignment

games/tribe/src/game/render/ui/render-tribe-list.ts

@@ -12,6 +12,7 @@ import {
 import { ClickableUIButton, TribeInfo, UIButtonActionType } from '../../ui/ui-types';
 import { renderMiniatureCharacter } from './render-characters-ui';
 import { DiplomacyStatus, GameWorldState } from '../../world-types';
+import { drawSprite } from '../../sprites/sprite-loader';
 
 export function renderTribeList(
   ctx: CanvasRenderingContext2D,
@@ -68,10 +69,20 @@ export function renderTribeList(
     let currentX = startX + UI_TRIBE_LIST_PADDING;
 
     // --- Badge --
-    ctx.font = `${UI_TRIBE_LIST_BADGE_SIZE}px "Press Start 2P", Arial`;
-    ctx.textBaseline = 'middle';
-    ctx.textAlign = 'left';
-    ctx.fillText(tribe.tribeBadge, currentX, centerY - UI_TRIBE_LIST_BADGE_SIZE / 4);
+    const badgeX = currentX + UI_TRIBE_LIST_BADGE_SIZE / 2;
+    const badgeY = centerY;
+
+    // Use sprite-based rendering for tribe badge
+    const badgeRendered = drawSprite(ctx, tribe.tribeBadge, badgeX, badgeY, UI_TRIBE_LIST_BADGE_SIZE);
+
+    if (!badgeRendered) {
+      // Fallback: original text rendering
+      ctx.font = `${UI_TRIBE_LIST_BADGE_SIZE}px "Press Start 2P", Arial`;
+      ctx.textBaseline = 'middle';
+      ctx.textAlign = 'left';
+      ctx.fillText(tribe.tribeBadge, currentX, centerY - UI_TRIBE_LIST_BADGE_SIZE / 4);
+    }
+
     currentX += UI_TRIBE_LIST_BADGE_SIZE + UI_TRIBE_LIST_PADDING;
 
     // --- Diplomacy Status & Button ---
@@ -108,11 +119,18 @@ export function renderTribeList(
         ctx.globalAlpha = 1;
       }
 
-      // Draw the icon
-      ctx.font = `${UI_TRIBE_LIST_BADGE_SIZE * 0.8}px "Press Start 2P", Arial`;
-      ctx.textBaseline = 'middle';
-      ctx.textAlign = 'center';
-      ctx.fillText(diplomacyIcon, currentX + UI_TRIBE_LIST_BADGE_SIZE / 2, centerY);
+      // Draw the icon using sprite
+      const iconX = currentX + UI_TRIBE_LIST_BADGE_SIZE / 2;
+      const iconY = centerY;
+      const iconRendered = drawSprite(ctx, diplomacyIcon, iconX, iconY, UI_TRIBE_LIST_BADGE_SIZE * 0.8);
+
+      if (!iconRendered) {
+        // Fallback: original text rendering
+        ctx.font = `${UI_TRIBE_LIST_BADGE_SIZE * 0.8}px "Press Start 2P", Arial`;
+        ctx.textBaseline = 'middle';
+        ctx.textAlign = 'center';
+        ctx.fillText(diplomacyIcon, currentX + UI_TRIBE_LIST_BADGE_SIZE / 2, centerY);
+      }
     }
     currentX += UI_TRIBE_LIST_BADGE_SIZE + UI_TRIBE_LIST_PADDING;