From 86c818d83e2ccf91efed4fcffd49ed3a5d44a173 Mon Sep 17 00:00:00 2001 From: Louie S Date: Fri, 9 Dec 2022 16:20:47 -0800 Subject: Replace crude Makefile with Autotools build system --- src/Makefile.am | 3 + src/Makefile.in | 574 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/body.c | 189 +++++++++++++++++++ src/draw.c | 277 +++++++++++++++++++++++++++ 4 files changed, 1043 insertions(+) create mode 100644 src/Makefile.am create mode 100644 src/Makefile.in create mode 100644 src/body.c create mode 100644 src/draw.c (limited to 'src') diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..eef8b12 --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,3 @@ +bin_PROGRAMS = simple_snake +simple_snake_SOURCES = body.c draw.c body.h +simple_snake_LDADD = -lncurses -lm diff --git a/src/Makefile.in b/src/Makefile.in new file mode 100644 index 0000000..223fedd --- /dev/null +++ b/src/Makefile.in @@ -0,0 +1,574 @@ +# Makefile.in generated by automake 1.16.3 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2020 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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+ int y; + struct node *next; +} NODE; + +typedef struct snake{ + NODE *head; //"head" will be the physical tail of the snake + NODE *tail; //"tail" will be the physical head of the snake + int length; +} SNAKE; + +//private prototypes +NODE *makeNode(int x, int y); +void deleteNode(NODE *np); +void increaseSnake(SNAKE *sp); + +//public functions +SNAKE *makeSnake(int startx, int starty, int len){ + SNAKE *new = malloc(sizeof(SNAKE)); + NODE *np; + + assert(new != NULL); + + new->length = len; + + new->head = makeNode(startx-len+1, starty); + np = new->head; + len--; + + while(len > 0){ + np->next = makeNode(startx-len+1, starty); + np = np->next; + len--; + } + + new->tail = np; + + return new; +} + +void deleteSnake(SNAKE *sp){ + NODE *hold; + + if(sp != NULL){ + while(sp->head != NULL){ + hold = sp->head; + sp->head = sp->head->next; + deleteNode(hold); + } + } + + free(sp); + return; +} + +void updateSnake(SNAKE *sp, int dir, int maxx, int maxy, bool *collision, int *fruit_loc, bool *fruit, int *score){ + NODE *np; + + if(sp == NULL) return; + + //move the "back" to the "front" (note that sp->tail will not be set until after np->x and np->y are set) + np = sp->head; + sp->head = sp->head->next; + sp->tail->next = np; + np->next = NULL; + + //dir decides direction the snake is moving + switch(dir){ + case(0): //snake is moving up + np->x = sp->tail->x; + np->y = sp->tail->y-1; + break; + + case(1): //snake is moving right + np->x = sp->tail->x+1; + np->y = sp->tail->y; + break; + + case(2): //snake is moving down + np->x = sp->tail->x; + np->y = sp->tail->y+1; + break; + + case(3): //snake is moving left + np->x = sp->tail->x-1; + np->y = sp->tail->y; + } + + //update tail pointer + sp->tail = np; + + //check if eating fruit + if(*fruit && sp->tail->x == *fruit_loc && sp->tail->y == *(fruit_loc + 1)){ + *fruit = false; + (*score)++; + + //need to increase snake size + increaseSnake(sp); + } + + //check collision + *collision = checkSnake(sp, maxx, maxy); + + return; +} + +//true = collision, false = no collision +bool checkSnake(SNAKE *sp, int maxx, int maxy){ + NODE *np; + + if(sp == NULL) return true; + + //check if oob + if(sp->tail->x < 0 || sp->tail->x >= maxx || sp->tail->y < 0 || sp->tail->y >= maxy) return true; + + //check if collision with body (check each cell) + np = sp->head; + while(np != sp->tail && np != NULL){ + if(sp->tail->x == np->x && sp->tail->y == np->y) return true; + np = np->next; + } + + return false; +} + +int getSnakeTailx(SNAKE *sp){ + + if(sp != NULL && sp->tail != NULL) return sp->tail->x; + return -1; + +} +int getSnakeTaily(SNAKE *sp){ + + if(sp != NULL && sp->tail != NULL) return sp->tail->y; + return -1; + +} + +int getSnakeHeadx(SNAKE *sp){ + + if(sp != NULL && sp->head != NULL) return sp->head->x; + return -1; + +} + +int getSnakeHeady(SNAKE *sp){ + + if(sp != NULL && sp->head != NULL) return sp->head->y; + return -1; + +} + +//private functions +NODE *makeNode(int x, int y){ + NODE *new = malloc(sizeof(NODE)); + assert(new != NULL); + + new->x = x; + new->y = y; + new->next = NULL; + + return new; +} + +void deleteNode(NODE *np){ + + if(np != NULL) free(np); + + return; +} + +void increaseSnake(SNAKE *sp){ + int xdiff = sp->head->next->x - sp->head->x; + int ydiff = sp->head->next->y - sp->head->y; + NODE *new = makeNode(sp->head->x - xdiff, sp->head->y - ydiff); + + new->next = sp->head; + sp->head = new; + sp->length++; + + return; +} diff --git a/src/draw.c b/src/draw.c new file mode 100644 index 0000000..4926f04 --- /dev/null +++ b/src/draw.c @@ -0,0 +1,277 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../include/body.h" + +#define START_SIZE 4 +//TODO consider having speed be affected by window size +#define SPEED 50000 //global refresh rate (for usleep()) +#define TIMEOUT 1 + +//#define DEBUG 1 + +void updateScore(int which, int score); +void updateScreen(SNAKE *sp, int dir, bool *collision, int *fruit_loc, bool *fruit, int *score); +int loadScore(void); +void saveScore(int highscore); + +#ifdef DEBUG +void count_up(void); +#endif + +int main(){ + int score = 0; + int highscore; + int input; + int dir; + bool collision; + int fruit_loc[2]; //index 0 is x, 1 is y + bool fruit_bool; + bool new_hs_flag; + int i; + + //TODO consider removing score2 altogether + + srand(time(NULL)); + + initscr(); + cbreak(); + keypad(stdscr, true); + noecho(); + curs_set(0); + set_escdelay(1); + + while(input != 'q'){ + clear(); + + //reset variables + collision = false; + fruit_bool = false; + score = 0; + new_hs_flag = false; + highscore = loadScore(); + + + //draw current score, and high score + updateScore(0, score); + updateScore(1, highscore); + + //the snake will be initially drawn without calling to body.h + //functions in body.h will update the snake and check for collision + //updateScreen() will actually draw the snake on each update (and update the scoreboard) + + //initialize and draw starting snake + SNAKE *player = makeSnake(START_SIZE+2, getmaxy(stdscr)/2, START_SIZE); + //TODO consider various choices for drawing the snake (the below sets reverse video and draws spaces) + attron(A_REVERSE); + mvaddch(getmaxy(stdscr)/2, START_SIZE+2, ':'); + for(i = 1; START_SIZE-i > 0; i++){ + mvaddch(getmaxy(stdscr)/2, START_SIZE+2-i, ' '); + } + attroff(A_REVERSE); + + //TODO add something like "press any key to start!" + getch(); + + //turn timeout on and set the initial direction to "right" + timeout(TIMEOUT); + dir = 1; + while(!collision){ + input = getch(); + + //update dir based on received input (check that the input is valid as well) + switch(input){ + case KEY_UP: + if(dir % 2) dir = 0; + break; + case KEY_RIGHT: + if(!(dir % 2)) dir = 1; + break; + case KEY_DOWN: + if(dir % 2) dir = 2; + break; + case KEY_LEFT: + if(!(dir % 2)) dir = 3; + } + + updateScore(0, score); + if(score > highscore){ + highscore = score; + new_hs_flag = true; + } + updateScore(1, highscore); + updateScreen(player, dir, &collision, fruit_loc, &fruit_bool, &score); + //TODO consider changing SPEED depending on if moving horizontally or vertically + refresh(); + usleep(SPEED); + } + + deleteSnake(player); + if(new_hs_flag) saveScore(highscore); + + //turn timeout off (wait for input again) + timeout(-1); + + //TODO add something like "game over" + while(input != 'q' && input != ' ' && input != 10) input = getch(); + + //DEBUG +#ifdef DEBUG + //count_up(); + getch(); +#endif + } + + endwin(); + return 0; +} + +// 0 for p1 score, 1 for highscore, 2 for p2 score +void updateScore(int which, int score){ + char *title; + int start; + + switch(which){ + case 0: //p1 score + title = "Score"; + start = 2; + break; + + case 1: //high score + title = "Highscore"; + start = getmaxx(stdscr)/2 - 5; + break; + + default: + exit(1); + } + + //draw the title and the score in the right location + mvprintw(0, start, "%s", title); + mvprintw(1, start + (which % 2 ? 5 : 3) - (!score ? 0 : (int)log10(score)), "%d", score); + + return; +} + +void updateScreen(SNAKE *sp, int dir, bool *collision, int *fruit_loc, bool *fruit, int *score){ + char eyes; + + //switch case to decide "eyes" char + switch(dir){ + case 0: + eyes = '"'; + break; + case 2: + eyes = '.'; + break; + default: + eyes = ':'; + } + + //turn off "back" + mvaddch(getSnakeHeady(sp), getSnakeHeadx(sp), ' '); + //fix previous "front" (no more eyes) + attron(A_REVERSE); + mvaddch(getSnakeTaily(sp), getSnakeTailx(sp), ' '); + //update the snake position + updateSnake(sp, dir, getmaxx(stdscr), getmaxy(stdscr), collision, fruit_loc, fruit, score); + //turn on front + mvaddch(getSnakeTaily(sp), getSnakeTailx(sp), eyes); + attroff(A_REVERSE); + + //TODO add logic to prevent fruit from spawning inside snake + //draw a new fruit, if necessary (do not draw it over scoreboard) + if(!(*fruit)){ + *fruit_loc = rand() % getmaxx(stdscr); + *(fruit_loc+1) = rand() % (getmaxy(stdscr)-2) + 2; + attron(A_BOLD); + mvaddch(*(fruit_loc+1), *fruit_loc, '@'); + attroff(A_BOLD); + *fruit = true; + } + + return; +} + +int loadScore(){ + FILE *savedata; + char *path = malloc(sizeof(char) * 256); + int hs = 0; + char *home = getenv("HOME"); + + sprintf(path, "%s/.local/share/simple-snake/save.bin", home); + savedata = fopen(path, "rb"); + + if(savedata != NULL){ + fread(&hs, sizeof(int), 1, savedata); + fclose(savedata); + } + + free(path); + return hs; +} + +void saveScore(int highscore){ + FILE *savedata; + char *path = malloc(sizeof(char) * 256); + char *home = getenv("HOME"); + + sprintf(path, "%s/.local/share/simple-snake/save.bin", home); + savedata = fopen(path, "wb"); + + //if the file does not exist, create it + if(savedata == NULL){ + if(home == NULL) return; + + sprintf(path, "%s/.local/", home); + mkdir(path, 0700); + + sprintf(path, "%s/.local/share/", home); + mkdir(path, 0755); + + sprintf(path, "%s/.local/share/simple-snake/", home); + mkdir(path, 0755); + + sprintf(path, "%s/.local/share/simple-snake/save.bin", home); + savedata = fopen(path, "wb"); + if(savedata == NULL) return; + } + + fwrite(&highscore, sizeof(int), 1, savedata); + fclose(savedata); + + free(path); + return; +} + + +//debug functions start here +#ifdef DEBUG +void count_up(){ + int score = 0; + int score2 = 0; + int highscore = 0; + + while(1){ + score++; + score2++; + highscore++; + updateScore(0, score); + updateScore(1, highscore); + updateScore(2, score2); + refresh(); + usleep(50000); + } + + return; +} +#endif -- cgit