adding folder picker

arm9/assets/folder_icon.asset

@@ -0,0 +1 @@
+-tiles -8bpp -mw4 -mh4

arm9/include/DSCEngine/text/vwf_engine.hpp

@@ -37,6 +37,7 @@ namespace DSC
 		void clear(BgPaletteType pal_type);
 		
 		void set_cursor(int row, int col_px);
+		int get_cursor_x() const;
 		
 		
 		inline const FontData& get_font() const { return font; }

arm9/include/filesystem.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <fat.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+class DirStream
+{
+private:
+	DIR* root = nullptr;
+public:
+	bool open(const char* dir);
+	bool next(char* dest_name);
+	void close();
+};

arm9/include/globals.hpp

@@ -3,3 +3,16 @@
 #include "ppm_reader.hpp"
 
 extern PPMReader* ppm_reader;
+
+void set_fat_inited(bool value);
+bool is_fat_inited();
+
+
+class Config
+{
+public:
+	static bool is_configured();
+	static void initialize();
+	
+	
+};

arm9/include/scenes.hpp

@@ -14,3 +14,4 @@ extern PPMReader* ppm_reader;
 Scene* get_player_scene();
 Scene* get_simple_scene();
 Scene* get_credits_scene();
+Scene* get_folder_picker_scene();

arm9/source/DSCEngine/text/vwf_engine.cpp

@@ -14,6 +14,8 @@ DSC::VwfEngine::VwfEngine(const FontData& font, ExtendedFontChart ext_chart)
 	
 }
 
+int DSC::VwfEngine::get_cursor_x() const { return crt_col*8+px_offset; }
+
 void DSC::VwfEngine::set_cursor(int row, int col_px)
 {
 	crt_row = row;

arm9/source/credits_scene.cpp

@@ -25,7 +25,6 @@ class CreditsScene : public SimpleScene
 		}
 	}
 	
-	
 	__attribute__((noinline))
 	void run() override
 	{

arm9/source/filesystem.cpp

@@ -0,0 +1,30 @@
+#include "filesystem.hpp"
+
+bool DirStream::open(const char* dir)
+{
+	if(root!=nullptr) 
+		closedir(root);
+	return nullptr == (root = opendir(dir));
+}
+
+bool DirStream::next(char* dest_name)
+{
+	if(root==nullptr) return false;	
+	struct dirent *entry;
+	while((entry=readdir(root))!=NULL)
+	{
+		if(strcmp(".", entry->d_name)==0 || strcmp("..", entry->d_name)==0)
+			continue;
+		if(entry->d_type != DT_DIR)
+			continue;
+		strcpy(dest_name, entry->d_name);
+		return true;
+	}	
+	return false;
+}
+
+void DirStream::close()
+{
+	closedir(root);
+	root = nullptr;
+}

arm9/source/folder_picker.cpp

@@ -0,0 +1,221 @@
+#include <nds.h>
+#include "scenes.hpp"
+#include "simple_scene.hpp"
+#include "folder_icon.h"
+#include "filesystem.hpp"
+
+class FolderPickerScene : public SimpleScene
+{
+	ObjFrame* folder_normal_frame;
+	ObjFrame* folder_highlighted_frame;
+	ObjFrame* folder_back_frame;
+	
+	DirStream dirstream;
+	
+	Sprite* folder_icons[5];	
+	Vector<char*> subfolders;
+	
+	char* current_path;
+	int depth=0;
+	int selected_index=0;
+	int max_subfolders = 65536;
+	
+	VwfEngine* vwf = new VwfEngine(Resources::Fonts::default_8x16);
+	void init() override
+	{
+		SimpleScene::init();
+		require_tiledmap_4bpp(MAIN_BG2, 256, 256, 32*24);
+		require_tiledmap_4bpp(SUB_BG2, 256, 256, 32*24);
+		
+		begin_sprites_init();		
+		
+		folder_normal_frame = new ObjFrame(&ROA_folder_icon8,0,0);
+		folder_highlighted_frame = new ObjFrame(&ROA_folder_icon8,0,1);
+		folder_back_frame = new ObjFrame(&ROA_folder_icon8,0,2);
+		
+		get_obj_allocator_sub()->allocate(folder_normal_frame);
+		get_obj_allocator_sub()->allocate(folder_highlighted_frame);
+		get_obj_allocator_sub()->allocate(folder_back_frame);
+		
+		for(int i=0;i<5;i++)
+		{
+			folder_icons[i] = create_sprite(new Sprite(SIZE_32x32, Engine::Sub));
+			folder_icons[i]->set_default_allocator(nullptr);
+			folder_icons[i]->add_frame(i%2==0?folder_normal_frame : folder_highlighted_frame);
+			folder_icons[i]->set_position(8,8+32*i);			
+		}
+		
+		
+		end_sprites_init();		
+		key_down.add_event(&FolderPickerScene::on_key_down, this);
+		
+		current_path = (char*)malloc(32768);		
+		
+		if(current_path==nullptr)
+		{
+			Debug::log("ALLOCATION FAILED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! _ CURRENT PATH");
+		}
+		current_path[0]=0;
+		
+		dirstream.open("fat://");
+		clear_subfolders();						
+	}
+		
+	void on_key_down(void*, void* _k)
+	{
+		int keys = (int)_k;
+		if(keys & KEY_LEFT)
+		{
+			if(selected_index>=5)
+			{
+				selected_index-=5;
+				display_page(selected_index/5);
+			}
+		}
+		else if(keys & KEY_RIGHT)
+		{
+			if(selected_index<max_subfolders-5)
+			{				
+				selected_index+=5;
+				display_page(selected_index/5);
+			}
+		}
+		else if(keys & KEY_UP)
+		{
+			if(selected_index>=1)
+			{
+				selected_index--;
+				display_page(selected_index/5);
+			}
+		}
+		else if(keys & KEY_DOWN)
+		{
+			if(selected_index<max_subfolders-1)
+			{				
+				selected_index++;
+				display_page(selected_index/5);
+			}			
+		}
+		
+		/*if(keys & KEY_TOUCH)
+		{
+			close()->next(gen_title_scene());
+		}*/
+	}		
+	
+	__attribute__((noinline))
+	void run() override
+	{
+		solve_map_requirements();
+		load_assets();
+		
+		BG_PALETTE[0x91]=BG_PALETTE_SUB[0x91]=Colors::Black;
+		BG_PALETTE[0x92]=BG_PALETTE_SUB[0x92]=Colors::Blue;
+		
+		vwf->set_render_space(bgGetGfxPtr(2),24,32);
+		VwfEngine::prepare_map(*vwf, MAIN_BG2, 32, 0, 0, 0x9);
+		vwf->clear(Pal4bit);			
+						
+		vwf->set_cursor(6, 74);
+		vwf->put_text("Pick a directory", Pal4bit, SolidColorBrush(0x1));		
+		
+			
+		vwf->set_render_space(bgGetGfxPtr(6),24,32);
+		VwfEngine::prepare_map(*vwf, SUB_BG2, 32, 0, 0, 0x9);
+		vwf->clear(Pal4bit);			
+		
+		vwf->set_cursor(10, 20);	
+		vwf->put_text("Touch the screen to return to title", Pal4bit, SolidColorBrush(0x1));
+					
+		Hardware::MainEngine::objEnable(128, true); // set to 128		
+		Hardware::SubEngine::objEnable(128, true); // set to 128	
+		
+		display_page(0);
+		
+		Scene::run();	
+	}
+	
+	void frame() override
+	{
+		GenericScene256::frame();
+	}	
+	
+	void display_page(int page)
+	{		
+		int last_id = page*5+4;
+		
+		char* name = new char[256];
+		while(last_id+1>=subfolders.size() && dirstream.next(name))
+		{
+			char* dirname = (char*)malloc(strlen(name)+1);			
+			if(dirname==nullptr)
+			{
+				Debug::log("ALLOCATION FAILED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! _ DIRRRR");
+			}
+			strcpy(dirname, name);
+			subfolders.push_back(dirname);
+			Debug::log(dirname);
+		}
+		delete[] name;
+		
+		if(last_id+1>=subfolders.size())
+		{
+			max_subfolders = subfolders.size();
+		}
+		
+		vwf->clear(Pal4bit);
+	
+		int k=page*5;
+		int i=0;
+		for(;i<5 && k<subfolders.size();i++, k++)
+		{
+			folder_icons[i]->show();
+			if(k==0 && depth>0)				
+			{
+				folder_icons[i]->set_frame(0, folder_back_frame);				
+			}			
+			else
+			{
+				folder_icons[i]->set_frame(0, folder_normal_frame);
+			}
+			Debug::log(subfolders[k]);
+			
+			vwf->set_cursor(1+2*i, 42);
+			vwf->put_text(subfolders[k], Pal4bit, SolidColorBrush(0x1 + (k==selected_index)));
+		}		
+		for(;i<5;i++)
+		{
+			folder_icons[i]->hide();
+		}		
+	}
+	
+	static char* sptr(const char* val)
+	{
+		char* r = (char*)malloc(strlen(val)+1);
+		strcpy(r, val);
+		return r;
+	}
+	
+	void clear_subfolders()
+	{
+		for(int i=0;i<subfolders.size();i++)
+			free(subfolders[i]);
+		subfolders.clear();
+		if(depth>0)
+			subfolders.push_back(sptr("Back"));
+	}	
+	
+	~FolderPickerScene()
+	{
+		key_down.remove_event(&FolderPickerScene::on_key_down, this);
+		delete vwf;
+		clear_subfolders();
+		subfolders.push_back(sptr(".."));
+	}
+	
+};
+
+Scene* get_folder_picker_scene()
+{
+	return new FolderPickerScene();
+}

arm9/source/globals.cpp

@@ -1,3 +1,16 @@
 #include "globals.hpp"
 
 PPMReader* ppm_reader = nullptr;
+
+unsigned int state_flags = 0;
+
+constexpr int STATE_FAT_INITED_BIT = 0;
+constexpr int STATE_FAT_INITED_MASK = 1<<STATE_FAT_INITED_BIT;
+
+void set_fat_inited(bool value) 
+{
+	state_flags &= ~STATE_FAT_INITED_MASK;
+	state_flags |= value << STATE_FAT_INITED_BIT;
+}
+
+bool is_fat_inited() { return state_flags & STATE_FAT_INITED_MASK; }

arm9/source/main.cpp

@@ -1,24 +1,14 @@
 #include "scenes.hpp"
 
-#include "player_bg.h"
+#include <fat.h>
+#include "globals.hpp"
 
 using namespace DSC;
 
-class MainScene : public GenericScene256
+void DSC::init_main_scene()
 {	
-	void init() override
-	{
-		GenericScene256::init();
-		require_bitmap(MAIN_BG3, &ROA_player_bg8);
-		require_bitmap(SUB_BG3, &ROA_player_bg8);
+	set_fat_inited(fatInitDefault());
 
-		key_down.add_event(&MainScene::on_key_down, this);
-	}
+	DSC::__MAIN_SCENE__= gen_title_scene();
+}
 
-	void on_key_down(void*, void*)
-	{
-		close()->next(gen_title_scene());
-	}
-};
-
-Scene* gen_main_scene() { return new MainScene(); }

arm9/source/title.cpp

@@ -1,5 +1,5 @@
 #include <nds.h>
-#include <fat.h>
+#include "globals.hpp"
 
 #include "logo_front_bin.h"
 #include "logo_back_bin.h"
@@ -13,14 +13,18 @@
 
 #include "scenes.hpp"
 
-extern "C" char fake_heap_start[];
-extern "C" char fake_heap_end[];
-
 
 static char BK_RESERVED[1024*512];
 
 using namespace DSC;
 
+Scene* get_browse_scene()
+{
+	//if(!is_fat_inited())
+		//return get_player_scene();
+	return get_folder_picker_scene();
+}
+
 class TitleScene : public GenericScene256
 {	
 	int textureID[4];
@@ -38,11 +42,6 @@ class TitleScene : public GenericScene256
 	
 	void init() override
 	{	
-		int* ptt = (int*)fake_heap_start;
-		Debug::warn("Heap start = %X", *ptt);
-		ptt = (int*)fake_heap_end;
-		Debug::log("Heap end = %X", *ptt);
-	
 		GenericScene256::init();		
 		
 		key_down.add_event(&TitleScene::on_key_down, this);
@@ -65,7 +64,7 @@ class TitleScene : public GenericScene256
 		title[0]->set_position(128-64, 116);
 		title[1]->set_position(128, 116);
 		
-		if(!fatInitDefault())
+		if(!is_fat_inited())
 		{
 			fat_fail = create_sprite(new Sprite(SIZE_64x32, Engine::Sub));
 			fat_fail->add_frame(new ObjFrame(&ROA_fat_fail8, 0,0));
@@ -117,7 +116,7 @@ class TitleScene : public GenericScene256
 	
 	typedef Scene*(*fgen)();
 	
-	inline static constexpr fgen scenegens[4] = { &get_player_scene, &get_simple_scene, &get_simple_scene, &get_credits_scene  };
+	inline static constexpr fgen scenegens[4] = { &get_browse_scene, &get_simple_scene, &get_simple_scene, &get_credits_scene  };
 	
 	void on_key_down(void* sender, void* args)
 	{
@@ -382,5 +381,3 @@ Scene* gen_title_scene()
 {
 	return new TitleScene();
 }
-
-dsc_launch(TitleScene)