Ajout de systeme de dessin de bitmap plus externalisation du buffer

package.json

@@ -1,5 +1,6 @@
 {
   "dependencies": {
+    "@types/node": "^17.0.14",
     "node-gyp": "^8.4.1"
   }
 }

rootfs overrides/chibrax/graphics.js

@@ -45,26 +45,22 @@ function removeFromCache(filepath) {
 }
 
 /**
- * @param { number } x
- * @param { number } y
  * @param {string} filepath
- * //!\\ THE CACHE DOESN'T CLEAN ITSELF UP //!\\
- * once you finished displaying a image use removeFromCache to free the associated memory
+ * @returns { Promise<import('@jimp/core').Bitmap> } BGRA buffer
  */
-async function drawImgFile(x, y, filepath) {
-    let bitmap
-    //not caching would imply reading the image each time we want to write it to the screen even for small movement
-    if(!imageCache[filepath]) {
+async function readImgFile(filepath) {
     const img = await jimp.read(filepath)
-        bitmap = img.bitmap
+    const bitmap = img.bitmap
     bitmap.data = rgbaTObgra(bitmap.data)
-        imageCache[filepath] = bitmap
-    } else {
-        bitmap = imageCache[filepath]
+    return bitmap
 }
 
-
-
+/**
+ * @param { number } x
+ * @param { number } y
+ * @param { import('@jimp/core').Bitmap } bitmap
+ */
+function drawBitmap(x, y, bitmap) {
     for(let dy = 0; dy < bitmap.height; dy++) {
         let bitmapLineEnd = bitmap.width * screen.byteDepth * (dy + 1)
         let bitmapLineStart = bitmap.width * screen.byteDepth * dy
@@ -102,6 +98,25 @@ async function drawImgFile(x, y, filepath) {
     }
 }
 
+/**
+ * @param { number } x
+ * @param { number } y
+ * @param { string } filepath
+ * @description this function work fine but will use caching. to clear the cache you can use removeFromCache(filepath) or you can keep the cache on the
+ * client side and use readImgFile and drawBitmap methods instead
+ */
+async function drawImgFile(x, y, filepath) {
+    //not caching would imply reading the image each time we want to write it to the screen even for small movement
+    let bitmap;
+    if(!imageCache[filepath]) {
+        bitmap = await readImgFile(filepath)
+        imageCache[filepath] = bitmap
+    } else {
+        bitmap = imageCache[filepath]
+    }
+    drawBitmap(x, y, bitmap)
+}
+
 /**
  *  @param { Buffer } buff
  */
@@ -147,4 +162,4 @@ function setPixel(x, y, colorCode) {
     buffer.set(colorCode, (x + y * screen.width) * screen.byteDepth)
 }
 
-module.exports = { flip, clear, getScreenDimensions, drawImgFile, parseHexColor, setPixel }
+module.exports = { flip, clear, getScreenDimensions, drawImgFile, readImgFile, drawBitmap, parseHexColor, setPixel, removeFromCache }