scale to 2x graphics

.gitignore

@@ -1 +1,2 @@
 src/img/*.png
+.luarc.json

flake.lock

@@ -1,5 +1,21 @@
 {
   "nodes": {
+    "luacats": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1740447442,
+        "narHash": "sha256-naorkTPkgJiEevBfpdRQtbCikN5YGiqWeIAWzCsEW4Q=",
+        "owner": "notpeter",
+        "repo": "playdate-luacats",
+        "rev": "7e56adacbbaceef923f24d898706aa3dec2225c1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "notpeter",
+        "repo": "playdate-luacats",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1740367490,
@@ -38,6 +54,7 @@
     },
     "root": {
       "inputs": {
+        "luacats": "luacats",
         "nixpkgs": "nixpkgs",
         "playdate-sdk": "playdate-sdk"
       }

flake.nix

@@ -7,9 +7,13 @@
       url = "github:RegularTetragon/playdate-sdk-flake";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    luacats = {
+      url = "github:notpeter/playdate-luacats";
+      flake = false;
+    };
   };
 
-  outputs = { self, nixpkgs, playdate-sdk }:
+  outputs = { self, nixpkgs, playdate-sdk, luacats }:
     let system = "x86_64-linux";
         pkgs = nixpkgs.legacyPackages.${system};
         playdate-sdk-pkg = playdate-sdk.packages.${system}.default;
@@ -18,12 +22,14 @@
         mkShell {
           env = {
             PLAYDATE_SDK_PATH = playdate-sdk-pkg;  
+            LUACATS_PATH = luacats.outPath;  
           };
           
           nativeBuildInputs = [
             just
             lua-language-server
             playdate-sdk-pkg
+            nushell
             tup
           ];
         };

justfile

@@ -10,4 +10,7 @@ simu: build
 
 cook-assets:
     @(which aseprite > /dev/null) || (echo "Missing aseprite program"; exit 1)
-    tup
+    -tup
+
+setup:
+    tools/gen-luarc.nu

src/img/Tupfile

@@ -1,2 +1,2 @@
-: level_01.ase |> aseprite --batch --export-tileset %f --sheet %o |> %B-table-32-32.png
+: level_01.ase |> aseprite --batch --export-tileset %f --sheet %o |> %B-table-16-16.png
 : player.ase |> aseprite --batch %f --save-as %o |> %B.png

src/main.lua

@@ -9,11 +9,12 @@ local playerSprite = nil
 local atlas = nil
 
 function gameInit()
+  playdate.display.setScale(2)
   local playerImage = gfx.image.new("img/player")
   assert(playerImage)
 
   playerSprite = gfx.sprite.new(playerImage)
-  playerSprite:moveTo(200, 120) -- (200,120) is the center of the Playdate screen
+  playerSprite:moveTo(100, 60) -- (200,120) is the center of the Playdate screen
   playerSprite:add()
 
   atlas = gfx.imagetable.new("img/level_01")
@@ -47,5 +48,5 @@ function playdate.update()
 
   gfx.sprite.update()
   playdate.timer.updateTimers()
-  atlas:drawImage(2, 32, 32)
+  atlas:drawImage(2, 16, 16)
 end

tools/gen-luarc.nu

@@ -0,0 +1,8 @@
+#!/usr/bin/env nu
+
+def main [] {
+  const here = path self .
+  let sample = open ($here | path join luarc_sample.json)
+  mut updated = $sample | update "workspace.library" { $env.LUACATS_PATH}
+  $updated | save --force ($here | path join .. .luarc.json)
+}

tools/luarc_sample.json

@@ -0,0 +1,19 @@
+{
+    "$schema": "https://raw.githubusercontent.com/sumneko/vscode-lua/master/setting/schema.json",
+    "diagnostics.globals": ["import"],
+    "diagnostics.severity": {
+        "duplicate-set-field": "Hint"
+    },
+    "format.defaultConfig": {
+        "indent_style": "space",
+        "indent_size": "4"
+    },
+    "runtime.builtin": {
+        "io": "disable",
+        "os": "disable",
+        "package": "disable"
+    },
+    "runtime.nonstandardSymbol": ["+=", "-=", "*=", "/=", "//=", "%=", "<<=", ">>=", "&=", "|=", "^="],
+    "runtime.version": "Lua 5.4",
+    "workspace.library": []
+}