/****************************************************************************
 * libwiigui Template
 * Tantric 2009
 *
 * input.cpp
 * Wii/GameCube controller management
 ***************************************************************************/

#include <gccore.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ogcsys.h>
#include <unistd.h>
#include <wiiuse/wpad.h>

#include "menu.h"
#include "video.h"
#include "input.h"
#include "libwiigui/gui.h"

int rumbleRequest[4] = {0,0,0,0};
GuiTrigger userInput[4];
static int rumbleCount[4] = {0,0,0,0};

/****************************************************************************
 * UpdatePads
 *
 * Scans pad and wpad
 ***************************************************************************/
void UpdatePads()
{
	WPAD_ScanPads();
	PAD_ScanPads();

	for(int i=/*3*/ 0; i >= 0; i--)
	{
		userInput[i].pad.btns_d = PAD_ButtonsDown(i);
		userInput[i].pad.btns_u = PAD_ButtonsUp(i);
		userInput[i].pad.btns_h = PAD_ButtonsHeld(i);
		userInput[i].pad.stickX = PAD_StickX(i);
		userInput[i].pad.stickY = PAD_StickY(i);
		userInput[i].pad.substickX = PAD_SubStickX(i);
		userInput[i].pad.substickY = PAD_SubStickY(i);
		userInput[i].pad.triggerL = PAD_TriggerL(i);
		userInput[i].pad.triggerR = PAD_TriggerR(i);
	}
}

/****************************************************************************
 * SetupPads
 *
 * Sets up userInput triggers for use
 ***************************************************************************/
void SetupPads()
{
	PAD_Init();
	WPAD_Init();

	// read wiimote accelerometer and IR data
	WPAD_SetDataFormat(WPAD_CHAN_ALL,WPAD_FMT_BTNS_ACC_IR);
	WPAD_SetVRes(WPAD_CHAN_ALL, screenwidth, screenheight);

	for(int i=0; i < /*4*/ 1; i++)
	{
		userInput[i].chan = i;
		userInput[i].wpad = WPAD_Data(i);
	}
}

/****************************************************************************
 * ShutoffRumble
 ***************************************************************************/

void ShutoffRumble()
{
	for(int i=0;i</*4*/ 1;i++)
	{
		WPAD_Rumble(i, 0);
		rumbleCount[i] = 0;
	}
}


/****************************************************************************
 * Shutdown Pads
 ***************************************************************************/
void ShutdownPads()
{
    ShutoffRumble();
	WPAD_Flush(0);
    WPAD_Disconnect(0);
    WPAD_Shutdown();
}

/****************************************************************************
 * DoRumble
 ***************************************************************************/

void DoRumble(int i)
{
	if(rumbleRequest[i] && rumbleCount[i] < 3)
	{
		WPAD_Rumble(i, 1); // rumble on
		rumbleCount[i]++;
	}
	else if(rumbleRequest[i])
	{
		rumbleCount[i] = 12;
		rumbleRequest[i] = 0;
	}
	else
	{
		if(rumbleCount[i])
			rumbleCount[i]--;
		WPAD_Rumble(i, 0); // rumble off
	}
}

/****************************************************************************
 * WPAD_Stick
 *
 * Get X/Y value from Wii Joystick (classic, nunchuk) input
 ***************************************************************************/

s8 WPAD_Stick(u8 chan, u8 right, int axis)
{
	float mag = 0.0;
	float ang = 0.0;
	WPADData *data = WPAD_Data(chan);

	switch (data->exp.type)
	{
		case WPAD_EXP_NUNCHUK:
		case WPAD_EXP_GUITARHERO3:
			if (right == 0)
			{
				mag = data->exp.nunchuk.js.mag;
				ang = data->exp.nunchuk.js.ang;
			}
			break;

		case WPAD_EXP_CLASSIC:
			if (right == 0)
			{
				mag = data->exp.classic.ljs.mag;
				ang = data->exp.classic.ljs.ang;
			}
			else
			{
				mag = data->exp.classic.rjs.mag;
				ang = data->exp.classic.rjs.ang;
			}
			break;

		default:
			break;
	}

	/* calculate x/y value (angle need to be converted into radian) */
	if (mag > 1.0) mag = 1.0;
	else if (mag < -1.0) mag = -1.0;
	double val;

	if(axis == 0) // x-axis
		val = mag * sin((PI * ang)/180.0f);
	else // y-axis
		val = mag * cos((PI * ang)/180.0f);

	return (s8)(val * 128.0f);
}