//#include <Esplora.h>
//#include <TFT.h>            // Arduino LCD library
//#include <SPI.h>

// colors for set_color function

#define ST7735_RED 5
#define ST7735_BLUE 4
#define ST7735_YELLOW 3
#define ST7735_GREEN 2
#define ST7735_WHITE 1
#define ST7735_BLACK 0

#define SPACE_CHARACTER 32

#define HALF_WAY_INDEX_TABLE_1 13

#define HALF_WAY_INDEX_TABLE_2 13 

#define MAX_ENTRIES_INDEX_TABLE_1 (7+1) // number of search entries in search table

#define MAX_ENTRIES_INDEX_TABLE_2 (7+1) // number of search entries in search table

#define QUEST_ENTRY_INDEX_TABLE_1 15

#define QUEST_ENTRY_INDEX_TABLE_2 6

// These definitions map display functions to the Adduino Esplora display header pins
#define sclk 15
#define mosi 16
#define cs   7
#define dc   0
#define rst  1

#define NUMBER_ITEM_SUPPORTED 3

unsigned char ship_type [] = {1,2,3};

unsigned char ship_location[NUMBER_ITEM_SUPPORTED]; // current strting location of a given item 

unsigned char ship_state[NUMBER_ITEM_SUPPORTED]; // current logic state of the item.

int tick_marks;

void simulate_poke(char xLocation, char yLocation, unsigned char symbol_char, boolean shp_type)
{
  Serial.print("simulate_poke(): xLocation=");
  Serial.print(xLocation,DEC);
  Serial.print(", yLocation=");
  Serial.print(yLocation,DEC);
  Serial.print(", symbol_char=");
  Serial.print(symbol_char);
  Serial.print(", ship_type=");
  Serial.println(shp_type);
  
}

void erase_symbol_cells_from_screen(char xLocation, char yLocation)
{
  Serial.print("erase_symbol_cells_from_screen(): xLocation=");
  Serial.print(xLocation,DEC);
  Serial.print(", yLocation=");
  Serial.println(yLocation,DEC); 
}

void update_ship_movement(void)
{
  Serial.print("update_ship_movement(): ");
  int shp_state;
  int shp_type; 
    
  unsigned char j;

  for (unsigned char i = 0; i < NUMBER_ITEM_SUPPORTED; i++)  // updates each active symbols/Ships for this tickmark of time 
   {
//       j = ship_location[i]; 

       Serial.print("ship_type[0] = ");
       Serial.print(ship_type[0]);
       Serial.print(", ship_type[1] = ");
       Serial.print(ship_type[1]);
       Serial.print(", ship_type[2] = ");
       Serial.print(ship_type[2]);

       Serial.print(", i = ");
       Serial.print(i,DEC);
              
//       shp_type = (int) ship_type[i];
//       shp_state = (int) ship_state[i];

       Serial.print(", shp_type = ");
       Serial.print(shp_type);
       Serial.print(", shp_state = ");
       Serial.println(shp_state);      

//       int old_state = shp_state;
//
//       switch (shp_type) {
//             
//          case 1:  // Destroyer 
//          
//             if ((shp_state == 1) or (shp_state == 3))
//             { 
//                simulate_poke(j, 1, 181, 1);
//                simulate_poke(j+1, 1, 180, 1);
//                ++shp_state;  //advance logic state for a given symbol or ship
//             }
//             else if ((shp_state == 2) or (shp_state == 4)) 
//             {
//                erase_symbol_cells_from_screen(j,1);
//                erase_symbol_cells_from_screen(j+1,1); 
//                ++j; // advance ship location 
//                ++shp_state;  //advance logic state for a given symbol or ship
//             }
//                
//           break;
//
//           case 2: // cruiser 
//
//              if ((shp_state == 1) or (shp_state == 3))
//              {
//                  ++shp_state;  //advance logic state for a given symbol or sh
//              }
//              else if (shp_state == 2)
//              {
//                  simulate_poke(j,5, 185, 1);
//                  simulate_poke(j+1,5, 186, 1); 
//                  simulate_poke(j+2,5, 183, 1);
//                  ++shp_state;  //advance logic state for a given symbol or ship     
//               }
//               else if (shp_state == 4) 
//               {
//                   erase_symbol_cells_from_screen(j,5);
//                   erase_symbol_cells_from_screen(j+1,5); 
//                   erase_symbol_cells_from_screen(j+2,5);
//                   ++shp_state;  //advance logic state for a given symbol or ship
//                   ++j;  // adavance current location by 1 
//               }
//               else
//               {
//               }
//                 
//            break;
//
//            case 3:
//              if ((shp_state == 1) or (shp_state == 3))
//              {
//                  ++shp_state;  //advance logic state for a given symbol or sh
//              }
//              else if (shp_state == 2)
//              {   simulate_poke(j, 3, 217, 1);
//                  simulate_poke(j+1, 3, 218, 1);
//                simulate_poke(j+2, 3, 221, 1);
//                simulate_poke(j+3, 3, 220, 1);
//                simulate_poke(j+4, 3, 219, 1);
//                  ++shp_state;  //advance logic state for a given symbol or ship     
//               }
//               else if (shp_state == 4) 
//               {
//                 erase_symbol_cells_from_screen(j,3);
//                 erase_symbol_cells_from_screen(j+1,3); 
//                 erase_symbol_cells_from_screen(j+2,3);
//                 erase_symbol_cells_from_screen(j+3,3); 
//                 erase_symbol_cells_from_screen(j+4,3);
//                    ++shp_state;  //advance logic state for a given symbol or ship
//                   ++j;  // adavance current location by 1 
//               }
//               else
//               {
//               }
//
//          break;
//
//          default: // logic state like 0 .. just do nothing at this time
//          break;
//
//     } // end of  logic state switch
//
//     if (old_state != shp_state)
//       {
//           if (j == 16)
//           {  // check if ship/symbol has gone pass the screen on the right.
//               shp_state = 0;  //disable symbol that went off the screen
//               j = 1;  //re-define location back 1 when need to be used again
//              
//            }
//            else {
//               if (shp_state == 5) 
//               {
//                  shp_state = 1;  // re-start ship/symbol state  back to 1  again - we assume ship or sybol has gone passed end of LCD screen
//               }
//            }
//
//          ship_state[i] = (unsigned char) shp_state; // update ship's state 
//          ship_location[i] = j; // update ship's location
//       }
//
//       delay(10);
//
//       break; // debug 
       
   } // end for loop   
   
} // end of function update_ship_movement

void setup() {
  // put your setup code here, to run once:

  Serial.begin(115200);
 //EsploraTFT.begin();
 //EsploraTFT.background(0, 0, 0);

   for (unsigned char i=0; i < NUMBER_ITEM_SUPPORTED; i++)
   {
      ship_location[i] = 1;
      ship_state[i] = 0; // disabled state for a given symbol 
  }
  
  tick_marks = 0;  
    
  ship_state[0] = 1; // enable destroyer type 
}

void loop() {
  // put your main code here, to run repeatedly:

update_ship_movement();
 
 delay(16);
 delay(1000);
 ++tick_marks;

// if (tick_marks == 120)
//    ship_state[1] = 1;


}