Reduce mobile canvas memory usage

src/constants.js

@@ -2,6 +2,8 @@
 const GRID_SIZE = 50;
 const TILE_SIZE = 64;
 const ARENA_SIZE = GRID_SIZE * TILE_SIZE;
+const VIEWPORT_SIZE = 1600;
+const CAMERA_ZOOM_SCALE = VIEWPORT_SIZE / ARENA_SIZE;
 
 export const ARENA = {
   GRID_SIZE,
@@ -9,6 +11,11 @@ export const ARENA = {
   SIZE: ARENA_SIZE,
 };
 
+export const RENDER = {
+  VIEWPORT_SIZE,
+  CAMERA_ZOOM_SCALE,
+};
+
 // 2. FIGHTER 도메인
 export const FIGHTER = {
   SCALE: 3,
@@ -235,13 +242,13 @@ export const SPECIAL_EFFECT = {
     alpha: 1,
   },
   CAMERA: {
-    ZOOM: 3,
+    ZOOM: 3 * CAMERA_ZOOM_SCALE,
     CENTER_ON_CASTER_AT_START: true,
     ZOOM_IN_MS: 720,
     HOLD_MS: 1100,
     ZOOM_OUT_MS: 1300,
     LERP: 0.045,
-    PROJECTILE_VIEW_ZOOM: 1,
+    PROJECTILE_VIEW_ZOOM: 1 * CAMERA_ZOOM_SCALE,
     PROJECTILE_ZOOM_OUT_MS: 300,
   },
   FOCUS_LAYER: {
@@ -330,31 +337,31 @@ export const WORLD_EFFECT = {
 
 // 7. CAMERA 도메인
 export const CAMERA = {
-  MIN_ZOOM: 1,
+  MIN_ZOOM: 1 * CAMERA_ZOOM_SCALE,
-  MAX_ZOOM: 3,
+  MAX_ZOOM: 3 * CAMERA_ZOOM_SCALE,
-  ZOOM_STEP: 0.1,
+  ZOOM_STEP: 0.1 * CAMERA_ZOOM_SCALE,
   // 자동 관전 진입 전 화염/냉기 메테오 낙하 위치를 임시로 확대 추적합니다.
   METEOR_FOCUS_ENABLED: false,
-  METEOR_FOCUS_ZOOM: 2,
+  METEOR_FOCUS_ZOOM: 2 * CAMERA_ZOOM_SCALE,
   SPECTATOR_LERP: 0.01,
   // 메테오 착탄 후 카메라를 해당 위치에 유지하는 시간(ms)입니다.
   METEOR_FOCUS_HOLD_DURATION: 1200,
   SPECTATOR_FINAL_FIGHTER_THRESHOLD: 5,
-  SPECTATOR_FINAL_FIGHT_ZOOM: 3,
+  SPECTATOR_FINAL_FIGHT_ZOOM: 3 * CAMERA_ZOOM_SCALE,
   SPECTATOR_FINAL_TEAM_COUNT: 2,
   SPECTATOR_FINAL_TEAM_TOTAL_THRESHOLD: 8,
   SPECTATOR_RANDOM_FOCUS_INTERVAL: 10000,
   SPECTATOR_LATE_FIGHTER_THRESHOLD: 500,
-  SPECTATOR_LATE_FIGHT_ZOOM: 2,
+  SPECTATOR_LATE_FIGHT_ZOOM: 2 * CAMERA_ZOOM_SCALE,
-  SELECTED_FIGHTER_ZOOM: 2,
+  SELECTED_FIGHTER_ZOOM: 2 * CAMERA_ZOOM_SCALE,
 };
 
 // 8. UI 도메인
 export const UI = {
   MINIMAP_ALPHA: 0.8,
-  MINIMAP_MARGIN: Math.round(ARENA_SIZE * 0.016),
+  MINIMAP_MARGIN: Math.round(VIEWPORT_SIZE * 0.016),
-  MINIMAP_VIEWPORT_SIZE: Math.round(ARENA_SIZE * 0.22),
+  MINIMAP_VIEWPORT_SIZE: Math.round(VIEWPORT_SIZE * 0.22),
-  MINIMAP_VIEW_FRAME_STROKE: 10,
+  MINIMAP_VIEW_FRAME_STROKE: Math.max(4, Math.round(VIEWPORT_SIZE * 0.003125)),
   SELECTED_FIGHTER_OUTLINE_GAP: 1,
   SELECTED_FIGHTER_OUTLINE_WIDTH: 1,
   SELECTED_FIGHTER_OUTLINE_RED: 255,

src/game/combat/specialEffects.js

@@ -1,5 +1,5 @@
 import Phaser from "phaser";
-import { ARENA, FIGHTER, SPECIAL_EFFECT } from "../../constants.js";
+import { ARENA, FIGHTER, RENDER, SPECIAL_EFFECT } from "../../constants.js";
 import {
   applySpecialEffectInstantKill,
   disposeCombatObject,
@@ -1032,6 +1032,13 @@ function shouldDrawInSpecialFocusSnapshot(
 }
 
 function canCreateArenaRenderTexture(scene) {
+  if (
+    isMobileRuntime()
+    && ARENA.SIZE * ARENA.SIZE > RENDER.VIEWPORT_SIZE * RENDER.VIEWPORT_SIZE
+  ) {
+    return false;
+  }
+
   const renderer = scene.game?.renderer;
   const gl = renderer?.gl;
 
@@ -1039,7 +1046,21 @@ function canCreateArenaRenderTexture(scene) {
     return true;
   }
 
-  return gl.getParameter(gl.MAX_TEXTURE_SIZE) >= ARENA.SIZE;
+  return Math.min(
+    gl.getParameter(gl.MAX_TEXTURE_SIZE),
+    gl.getParameter(gl.MAX_RENDERBUFFER_SIZE),
+  ) >= ARENA.SIZE;
+}
+
+function isMobileRuntime() {
+  const navigator = globalThis.navigator;
+  const userAgent = navigator?.userAgent ?? "";
+
+  return Boolean(
+    navigator?.userAgentData?.mobile
+    || /Android|iPhone|iPad|iPod/i.test(userAgent)
+    || globalThis.matchMedia?.("(pointer: coarse) and (max-width: 960px)")?.matches,
+  );
 }
 
 function destroySpecialFocusLayer(scene, state) {

src/main.js

@@ -1,7 +1,7 @@
 import Phaser from "phaser";
 import { ArenaScene } from "./game/arena/ArenaScene.js";
 import {
-  ARENA,
+  RENDER,
   SPAWN,
 } from "./constants.js";
 import { createMatchForm } from "./ui/matchForm.js";
@@ -181,10 +181,15 @@ const arenaScene = new ArenaScene({
 const game = new Phaser.Game({
   type: Phaser.AUTO,
   parent: "game",
-  width: ARENA.SIZE,
+  width: RENDER.VIEWPORT_SIZE,
-  height: ARENA.SIZE,
+  height: RENDER.VIEWPORT_SIZE,
   pixelArt: true,
   backgroundColor: "#282819",
+  render: {
+    antialias: false,
+    pixelArt: true,
+    roundPixels: true,
+  },
   physics: {
     default: "arcade",
     arcade: {