Add a way to switch backgrounds

src/defs/background_data.h

@@ -3,6 +3,8 @@
 
 #include <stdint.h>
 
+extern int currentBackground;
+
 struct BackgroundData {
     uint8_t backgroundWidth;
     uint8_t backgroundHeight;

src/main.cpp

@@ -61,6 +61,9 @@ uint32_t dayUnixTime = 0;
 Egg_t* eggSelection = NULL;
 uint8_t eggNumber = 0;
 
+// Background stuff
+int currentBackground = 0;
+
 // Tasks
 TaskHandle_t secondLoop = NULL;
 
@@ -92,7 +95,7 @@ void setup() {
     storage_readFile("/menu.bin", &menuElementsData);
     storage_readFile("/ui.bin", &uiElementsData);
     
-    storage_initBackground("/bg2.bin", bg);
+    storage_initBackground(currentBackground, bg);
     
     pinMode(K1_PIN, BUTTON_MODE);
     pinMode(K2_PIN, BUTTON_MODE);

src/menu/change_background_screen.cpp

@@ -0,0 +1,77 @@
+#include "menu.h"
+#include "defs/sprite_data.h"
+#include "buttons/buttons.h"
+#include "draw/draw.h"
+#include "storage/storage.h"
+#include "display/display.h"
+#include "defs/screen_defs.h"
+
+void menu_changeBackgroundScreen(
+    TFT_eSprite &bg, TFT_eSprite &sprite, struct SpriteData* uiSpriteData
+) {
+    int8_t selectedBackground = currentBackground;
+
+    fs::File bgFolder = SPIFFS.open("/bg");
+    fs::File background = bgFolder.openNextFile();
+
+    uint8_t backgrounds = 0;
+
+    uint64_t currentTime = esp_timer_get_time();
+
+    int8_t selectedPreviousBackground = 0;
+
+    while (background) {
+        if (!background.isDirectory()) {
+            backgrounds++;
+        }
+
+        background = background.openNextFile();
+    }
+
+    for (;;) {
+        uint8_t buttonsPressed = buttons_getPressedButtons();
+        currentTime = esp_timer_get_time();
+
+        switch (buttonsPressed) {
+            case K1_PRESSED:
+                selectedBackground++;
+                if (selectedBackground > backgrounds) { 
+                    selectedBackground = 0;
+                }
+                storage_initBackground(selectedBackground, bg);
+                lastUpdateTime = currentTime;
+                break;
+
+            case K2_PRESSED:
+                selectedBackground--;
+                if (selectedBackground < 0) {
+                    selectedBackground = backgrounds - 1;
+                }
+                storage_initBackground(selectedBackground, bg);
+                lastUpdateTime = currentTime;
+                break;
+            
+            case K3_PRESSED:
+                currentBackground = selectedBackground;
+                lastUpdateTime = currentTime;
+                return;
+            
+            case K4_PRESSED:
+                storage_initBackground(currentBackground, bg);
+                lastUpdateTime = currentTime;
+                return;
+        }
+
+        if (selectedPreviousBackground != selectedBackground) {
+            draw_drawBackground(bg, 90, 90, 3);
+            draw_drawSprite(sprite, 174, 96, uiSpriteData, ARROW_ICON);
+            tft_drawBuffer();
+        }
+
+        if (currentTime - lastUpdateTime > INACTIVITY_THRESHOLD_TIME_US) {
+            storage_initBackground(currentBackground, bg);
+            return;
+        }
+    }
+
+}

src/menu/menu.h

@@ -53,11 +53,13 @@ void menu_drawAngryScreen(
     struct SpriteData* spriteData, struct SpriteData* smallUiElements
 );
 void menu_drawFridgeScreen(TFT_eSprite &bg, TFT_eSprite& sprite, struct SpriteData* smallUiElements, struct SpriteData* bigUiElements);
-
 void training_screenTraining2(
     TFT_eSprite &bg, TFT_eSprite &sprite,
     struct SpriteData* mainCharaData, struct SpriteData* attackSprites
 );
+void menu_changeBackgroundScreen(
+    TFT_eSprite &bg, TFT_eSprite &sprite, struct SpriteData* uiSpriteData
+);
 
 void menu_sleepScreen_sleepAction();
 void menu_sleepScreen_recalculateSleep();

src/storage/storage.cpp

@@ -17,7 +17,11 @@ void storage_init() {
 }
 
 
-void storage_initBackground(const char* path, TFT_eSprite& bg) {
+void storage_initBackground(const int id, TFT_eSprite& bg) {
+    char path[15];
+
+    snprintf(path, 15, "/bg/%i.bin", id);
+
     File file = SPIFFS.open(path, "r");
     if (!file) {
         printf("%s Failed to open file for reading\n", TAG_S);

src/storage/storage.h

@@ -9,7 +9,7 @@
 
 void storage_init();
 void storage_readFile(const char* path, struct SpriteData* spriteData);
-void storage_initBackground(const char* path, TFT_eSprite &bg);
+void storage_initBackground(const int id, TFT_eSprite &bg);
 
 void storage_saveState(); 
 void storage_loadState();