Bag.c

#include "include/gba.h"
#include "useful.h"
#include "img_bins/sprites.h"
#include "img_bins/workaround.c"
#include "img_bins/ui.c"
#include "img_bins/empty.c"

#define DMA3Source		(*(u32 *) 0x040000D4)
#define DMA3Dest		(*(u32 *) 0x040000D8)
#define DMA3Options		(*(u32 *) 0x040000DC)

#define Tiles   ((u16 *) 0x6008000)
#define Tiles2  ((u16 *) 0x6000000)
#define MapData ((u16 *) 0x600E800)
#define BG0Data ((u16 *) 0x600E800)
#define BG2Data ((u16 *) 0x600E000)
#define BG3Data ((u16 *) 0x600F000)
#define OBJData ((u16 *) 0x6010000)
#define MenuBG  ((u16 *) 0x600F800)

#define waitasec  (65535*2)

void GetInput();

#define currentLoop 		(*(u8 *) (globalVars + 0x0))//helps in main since ya know
#define lastKeyPress  		(*(u8 *) (globalVars + 0x1))//helps so we know that they're done pressing
#define currentpocket       (*(u8 *) (globalVars + 0x2))
#define dirtomove  		    (*(u8 *) (globalVars + 0x3))//lets me know where I'm moving next. 0,1,2 for none, left, right.
#define stuffthree  		(*(u8 *) (globalVars + 0x4))
#define unused_one          (*(u8 *) (globalVars + 0x5))
#define unused_two 			(*(u8 *) (globalVars + 0x6))
#define unused_three     	(*(u8 *) (globalVars + 0x7))
#define unused_four   		(*(u8 *) (globalVars + 0x8))
#define unused_five  		(*(u8 *) (globalVars + 0x9))
#define unused_six  		(*(u8 *) (globalVars + 0xA))
#define unused_seven  		(*(u8 *) (globalVars + 0xB))
#define unused_eight  		(*(u8 *) (globalVars + 0xC))
#define unused_nine  		(*(u16 *) (globalVars + 0xD))
#define unused_ten	  		(*(u16 *) (globalVars + 0xF))
#define unused_eleven	  	(*(u16 *) (globalVars + 0x11))

//original bag routine at 0x0806F481

void init2();
void init3();
void main();

void init() {

	storeCallback((void *) init2 + 1);
}

#include "include/gba_compress.h"

#include "useful-bpre.h"

void init2() {
	storeCallback2(0);
	globalVars = malloc(0x80);

	int blank = 0;
	DMA3Source = ␣
	DMA3Dest = globalVars;
	DMA3Options = 0x81000040;

	currentLoop = 0;
	currentpocket = 0;

	storeCallback((void *) init3 + 1);
}

void init3() {
	for(int i=0x10;i<0x20;i+=2) changeIO(i,0);

	initStuff();

	const u32 mapDataUnk[2] = {
		0x000001E0, 0x000011D9
	};

	initMapData(0x1,mapDataUnk,0x2);

	storeCallback((void *) main + 1);
	LASTRESULT = 0xFF;
}

void main()
{
    if (currentLoop == 0)
	{
        dirtomove = 0;
        initVideo();
		initBG();
		clearOAM();

        unfadeScreen();
		currentLoop++;
		storeCallback2((void *) updateEverything2 + 1);
	}
	else if (currentLoop == 1)
	{
		if (fadeScreenDone == 0)
			currentLoop++;
	}
	else if (currentLoop == 2)
    {
        GetInput();
    }
    else if (currentLoop == 3)//exiting function
    {
        if (fadeScreenDone == 0)
            someExitFunc();
    }
	updateEverything();
}

void GetInput()
{
	if(keyPressed(KEY_LEFT) && currentpocket != 0)
	{
		dirtomove = 1;
	}
	else if(keyPressed(KEY_RIGHT) && currentpocket != 2)
	{
		dirtomove = 2;
	}
	else if(keyPressed(KEY_A))
	{
		yesNoBox();
	}
	else if(keyPressed(KEY_B))
    {
        fadeScreen();
        storeCallback(nullCallback);
        if (globalVars != 0)
        {
          free(globalVars);
          globalVars = 0;
        }
        currentLoop = 3;
    }
}

void initVideo() {

	changeIO(0,OBJ_ENABLE | OBJ_MAP_1D);

	u32 x = 0x80 << 5;
	u32 endAddr = 0xC0 << 0x13;
	int blank = 0;

	for(u32 i = 0xC0 << 9; i > x ; i -= x, endAddr += x) {
		DMA3Source = &blank;
		DMA3Dest = endAddr;
		DMA3Options = 0x81000800;
	}

	textboxBGInit(boxInitStuff);

	enableBG(0);
	enableBG(1);
    enableBG(3);

	changeIO(0x4, 0x1E08);
	changeIO(0x6, 0x1C46);
	changeIO(0x8,(0x1E << SCREEN_SHIFT));
	changeIO(0xA,(0x1D << SCREEN_SHIFT) | (2 << CHAR_SHIFT) | 3);
	changeIO(0,0x3740);

}

void loaditem(){
    u32* loc = (u32*)0x0203988C;
    u8* itemdataPointer = (u8*)loc[0];
    u16 item = itemdataPointer[0];
    u8 itemamount = itemdataPointer[2];
    }

void initBG(){
	LZ77UnCompVram(uiTiles,Tiles-0x4000);
	LZ77UnCompVram(uiMap, BG2Data);
	copyPal(uiPal,0);
}