screen.h

/**
 * screen.h
 * Created on Aug, 23th 2023
 * Author: Tiago Barros
 * Based on "From C to C++ course - 2002"
 * Reference: https://en.wikipedia.org/wiki/ANSI_escape_code
 */

#ifndef __SCREEN_H__
#define __SCREEN_H__

#include <stdio.h>

// Terminal control sequences
#define ESC "\033"
#define NORMALTEXT "[0m"
#define BOLDTEXT "[1m"
#define ITALICTEXT "[3m"
#define BLINKTEXT "[5m"
#define REVERSETEXT "[7m"
#define HOMECURSOR "[f"
#define SHOWCURSOR "[?25h"
#define HIDECURSOR "[?25l"
#define CLEARSCREEN "[2J"

// BOX Drawing - Unix like terminals
#define BOX_ENABLE "(0"
#define BOX_DISABLE "(B"
#define BOX_VLINE 0x78
#define BOX_HLINE 0x71
#define BOX_UPLEFT 0x6C
#define BOX_UPRIGHT 0x6B
#define BOX_DWNLEFT 0x6D
#define BOX_DWNRIGHT 0x6A
#define BOX_CROSS 0x6E
#define BOX_TLEFT 0X74
#define BOX_TRIGHT 0X75
#define BOX_TUP 0X77
#define BOX_TDOWN 0X76

#define BOX_DIAMOND 0x60
#define BOX_BLOCK 0x61
#define BOX_DOT 0x7E

// screen constants
#define SCRSTARTX 3 // Initial and final screen positions for the game
#define SCRENDX 75  // It means the area that can be drawn
#define SCRSTARTY 1
#define SCRENDY 23

#define MINX 1  // min screen horizontal pos
#define MINY 1  // min screen vertical pos
#define MAXX 80 // max screen horizontal pos
#define MAXY 48 // max screen vertical pos

/**
 * Screen Colors type
 */
typedef enum {
  BLACK,
  RED,
  GREEN,
  BROWN,
  BLUE,
  MAGENTA,
  CYAN,
  LIGHTGRAY,
  DARKGRAY,
  LIGHTRED,
  LIGHTGREEN,
  YELLOW,
  LIGHTBLUE,
  LIGHTMAGENTA,
  LIGHTCYAN,
  WHITE
} screenColor;

/**
 * Move the cursor to position (0,0)
 */
static inline void screenHomeCursor() { printf("%s%s", ESC, HOMECURSOR); }

/**
 * Show the cursor
 */
static inline void screenShowCursor() { printf("%s%s", ESC, SHOWCURSOR); }

/**
 * Hide the cursor
 */
static inline void screenHideCursor() { printf("%s%s", ESC, HIDECURSOR); }

/**
 * Clear the screen
 */
static inline void screenClear() {
  screenHomeCursor();
  printf("%s%s", ESC, CLEARSCREEN);
}

/**
 * Update screen imediatelly
 */
static inline void screenUpdate() { fflush(stdout); }

/**
 * Set screen mode to "normal"
 */
static inline void screenSetNormal() { printf("%s%s", ESC, NORMALTEXT); }

/**
 * Set screen mode to "bold"
 */
static inline void screenSetBold() { printf("%s%s", ESC, BOLDTEXT); }

/**
 * Set screen mode to "blink"
 */
static inline void screenSetBlink() { printf("%s%s", ESC, BLINKTEXT); }

/**
 * Set screen mode to "reverse"
 */
static inline void screenSetReverse() { printf("%s%s", ESC, REVERSETEXT); }

/**
 * Enable BOX characters in terminal
 */
static inline void screenBoxEnable() { printf("%s%s", ESC, BOX_ENABLE); }

/**
 * Disable BOX characters in terminal
 */
static inline void screenBoxDisable() { printf("%s%s", ESC, BOX_DISABLE); }

/**
 * Clear the screen, set cursor to home position
 * and optionally draw borders on it.
 *
 * @param drawBorders if not zero, draw borders on screen.
 */
void screenInit(int drawBorders);

/**
 * Clear the screen and restores to initial state.
 */
void screenDestroy();

/**
 * Move cursor to position (x,y)
 * @param x x position
 * @param y y position
 */

void screenGotoxy(int x, int y);

/**
 * Define text colors
 * @param fg foreground color, can assume values from BLACK to WHITE
 * @param bg background color, can assume values from BLACK to LIGHTGRAY
 */
void screenSetColor(screenColor fg, screenColor bg);

#endif /* __SCREEN_H__ */