#include "input.h"
#include <keypadc.h>
#include "state.h"
#include "ops.h"

void do_input()
{
    unsigned char edge_detection_data[7];
    unsigned char *edge_detect = edge_detection_data - 1;
    for (unsigned char i = 1; i <= 7; i++)
    {
        edge_detect[i] = kb_Data[i];
    }

    kb_Scan();

    for (unsigned char i = 1; i <= 7; i++)
    {
        edge_detect[i] = kb_Data[i] & (edge_detect[i] ^ kb_Data[i]);
    }

    if (kb_Left & edge_detect[7] && cursor_stack > 0)
    {
        cursor_stack--;
    }
    if (kb_Right & edge_detect[7] && cursor_stack < TABLEAU_NUM_PILES - 1)
    {
        cursor_stack++;
    }

    if (kb_2nd & edge_detect[1])
    {
        if (can_grab()) grab();
        else if (can_drop()) drop();
    }

    if (kb_Clear & edge_detect[6])
    {
        cancel();
    }

    if (kb_Del & edge_detect[1])
    {
        deal();
    }
}