50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
#ifndef SERPENT_H
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#define SERPENT_H
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/* Program information */
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#define NAME "serpent"
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#define VERSION 0.1
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/* */
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/* Absolute value macro */
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#define ABS(x) (x) < 0 ? -(x) : (x)
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/* */
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/* Global variables/constants */
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#define START_SNAKE_SIZE 5 /* snake's initial size */
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#define SNAKE_BODY '*' /* snake's body */
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#define SNAKE_HEAD_U 'v' /* head when going up */
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#define SNAKE_HEAD_D '^' /* head when going down */
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#define SNAKE_HEAD_L '>' /* head when going left */
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#define SNAKE_HEAD_R '<' /* head when going right */
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#define FOOD '@' /* normal food */
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#define BOARD_CHAR '#' /* character at corners of border */
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#define SCREEN_WIDTH 40 /* the virtual screen width */
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#define SCREEN_HEIGHT 30 /* the virtual screen height */
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/* */
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/* Board structure */
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typedef struct board_t {
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char border; /* will use BOARD_CHAR */
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unsigned int boardHeight; /* will use SCREEN_HEIGHT */
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unsigned int boardWidth; /* will use SCREEN_WIDTH */
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} board_t;
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/* Snake node structure (for dobly linked list) */
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typedef struct snake_node {
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int pX, pY; /* represents the node's position on the board */
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struct snake_node *next, *prev; /* pointers to the next and previous nodes */
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} snake_node;
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/* Snake structure (dobly linked list) */
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typedef struct snake_t {
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int dX, dY; /* represents the snake's direction */
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snake_node *head, *tail; /* snake's nodes, dobly linked list */
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} snake_t;
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/* Apple structure */
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typedef struct apple_t {
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int pX, pY; /* represents the apple's position on the board */
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} apple_t;
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#endif //SERPENT_H
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