Save file update (incomplete)

2026-05-10 11:20:09 -05:00
parent d7f515575a
commit a8fd55cb38
42 changed files with 2678 additions and 1 deletions
@@ -0,0 +1,134 @@
+/**
+ * Copyright (c) 2026 Dominic Masters
+ *
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "save/save.h"
+#include "util/string.h"
+
+static void _saveGetFileName(const uint8_t slot, char_t *out, const size_t max) {
+  snprintf(out, max, "%s_%u", SAVE_DOLPHIN_GAME_CODE, (uint32_t)slot);
+}
+
+errorret_t saveInitDolphin(void) {
+  SAVE.platform.mounted = false;
+
+  int32_t result = CARD_Mount(
+    SAVE_DOLPHIN_CHANNEL,
+    SAVE.platform.cardBuffer,
+    NULL
+  );
+
+  if(result < 0) {
+    errorThrow("Failed to mount memory card (error %d)", result);
+  }
+
+  SAVE.platform.mounted = true;
+  errorOk();
+}
+
+errorret_t saveDisposeDolphin(void) {
+  if(SAVE.platform.mounted) {
+    CARD_Unmount(SAVE_DOLPHIN_CHANNEL);
+    SAVE.platform.mounted = false;
+  }
+  errorOk();
+}
+
+errorret_t saveLoadDolphin(const uint8_t slot, savefile_t *file) {
+  char_t fileName[SAVE_DOLPHIN_FILE_NAME_MAX];
+  _saveGetFileName(slot, fileName, SAVE_DOLPHIN_FILE_NAME_MAX);
+
+  int32_t result = CARD_Open(SAVE_DOLPHIN_CHANNEL, fileName, &SAVE.platform.cardFile);
+  if(result == CARD_ERROR_NOFILE) {
+    file->exists = false;
+    errorOk();
+  }
+  if(result < 0) {
+    file->exists = false;
+    errorThrow("Failed to open memory card file for slot %u (error %d)",
+      (uint32_t)slot, result
+    );
+  }
+
+  void *buffer = memalign(32, SAVE_DOLPHIN_SECTOR_SIZE);
+  if(!buffer) {
+    CARD_Close(&SAVE.platform.cardFile);
+    errorThrow("Failed to allocate memory card read buffer");
+  }
+
+  result = CARD_Read(&SAVE.platform.cardFile, buffer, SAVE_DOLPHIN_SECTOR_SIZE, 0);
+  CARD_Close(&SAVE.platform.cardFile);
+
+  if(result < 0) {
+    free(buffer);
+    file->exists = false;
+    errorThrow("Failed to read memory card data for slot %u (error %d)",
+      (uint32_t)slot, result
+    );
+  }
+
+  memoryCopy(file, buffer, sizeof(savefile_t));
+  free(buffer);
+
+  file->exists = true;
+  errorOk();
+}
+
+errorret_t saveWriteDolphin(const uint8_t slot, const savefile_t *file) {
+  char_t fileName[SAVE_DOLPHIN_FILE_NAME_MAX];
+  _saveGetFileName(slot, fileName, SAVE_DOLPHIN_FILE_NAME_MAX);
+
+  void *buffer = memalign(32, SAVE_DOLPHIN_SECTOR_SIZE);
+  if(!buffer) {
+    errorThrow("Failed to allocate memory card write buffer");
+  }
+  memset(buffer, 0, SAVE_DOLPHIN_SECTOR_SIZE);
+  memoryCopy(buffer, file, sizeof(savefile_t));
+
+  // Try open existing file first; create if absent.
+  int32_t result = CARD_Open(SAVE_DOLPHIN_CHANNEL, fileName, &SAVE.platform.cardFile);
+  if(result == CARD_ERROR_NOFILE) {
+    result = CARD_Create(
+      SAVE_DOLPHIN_CHANNEL,
+      fileName,
+      SAVE_DOLPHIN_SECTOR_SIZE,
+      &SAVE.platform.cardFile
+    );
+  }
+
+  if(result < 0) {
+    free(buffer);
+    errorThrow("Failed to open/create memory card file for slot %u (error %d)",
+      (uint32_t)slot, result
+    );
+  }
+
+  result = CARD_Write(&SAVE.platform.cardFile, buffer, SAVE_DOLPHIN_SECTOR_SIZE, 0);
+  CARD_Close(&SAVE.platform.cardFile);
+  free(buffer);
+
+  if(result < 0) {
+    errorThrow("Failed to write memory card data for slot %u (error %d)",
+      (uint32_t)slot, result
+    );
+  }
+
+  errorOk();
+}
+
+errorret_t saveDeleteDolphin(const uint8_t slot) {
+  char_t fileName[SAVE_DOLPHIN_FILE_NAME_MAX];
+  _saveGetFileName(slot, fileName, SAVE_DOLPHIN_FILE_NAME_MAX);
+
+  int32_t result = CARD_Delete(SAVE_DOLPHIN_CHANNEL, fileName);
+  if(result < 0 && result != CARD_ERROR_NOFILE) {
+    errorThrow("Failed to delete memory card file for slot %u (error %d)",
+      (uint32_t)slot, result
+    );
+  }
+
+  errorOk();
+}