Snake

CMakeLists.txt

@@ -5,7 +5,7 @@ project(snake)
 # Specify the source files
 set(SOURCES
     main.c
-    #tetris.c
+    snake.c
     #util.c
     #file3.c
 )
@@ -24,4 +24,4 @@ target_compile_options(snake PUBLIC -std=c99 -Wall)
 
 # Used libraries
 
-#target_link_libraries(tetris PUBLIC ncurses SDL2 SDL2_mixer)
+target_link_libraries(snake PUBLIC ncurses)

main.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <ncurses.h>
+
+
+
+int main() {
+    srand(time(NULL)); // Seed for random number generation
+    initscr(); // Initialize ncurses
+    noecho(); // Don't echo pressed keys
+    curs_set(0); // Hide the cursor
+    setup();
+
+    while (!gameOver()) {
+        draw();
+        input();
+        logic();
+        usleep(100000); // Sleep for a short duration
+    }
+
+    endwin(); // End ncurses mode
+    printf("Game Over!\n");
+    return 0;
+}

snake.c

@@ -0,0 +1,158 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <ncurses.h>
+
+#define WIDTH 20
+#define HEIGHT 20
+
+typedef struct {
+    int x;
+    int y;
+} Point;
+
+typedef struct {
+    Point body[100]; // Maximum length of the snake
+    int length;
+} Snake;
+
+Point food;
+Snake snake;
+int direction; // 0: UP, 1: DOWN, 2: LEFT, 3: RIGHT
+
+void setup() {
+    snake.length = 1;
+    snake.body[0].x = WIDTH / 2;
+    snake.body[0].y = HEIGHT / 2;
+    direction = 3; // Start moving to the right
+    generateFood();
+}
+
+
+void draw() {
+    clear(); // Clear the screen
+
+    for (int i = 0; i < WIDTH + 2; i++)
+        printw("#");
+    printw("\n");
+
+    for (int i = 0; i < HEIGHT; i++) {
+        for (int j = 0; j < WIDTH; j++) {
+            if (j == 0)
+                printw("#"); // Left wall
+            if (i == food.y && j == food.x)
+                printw("F"); // Food
+            else {
+                int isSnakePart = 0;
+                for (int k = 0; k < snake.length; k++) {
+                    if (snake.body[k].x == j && snake.body[k].y == i) {
+                        printw("O"); // Snake body
+                        isSnakePart = 1;
+                    }
+                }
+                if (!isSnakePart)
+                    printw(" ");
+            }
+            if (j == WIDTH - 1)
+                printw("#"); // Right wall
+        }
+        printw("\n");
+    }
+
+    for (int i = 0; i < WIDTH + 2; i++)
+        printw("#");
+    printw("\n");
+    refresh(); // Refresh the screen to show changes
+}
+
+
+void input() {
+    keypad(stdscr, TRUE); // Enable special keys
+    halfdelay(1); // Wait for input for a short time
+
+    int ch = getch();
+    switch (ch) {
+        case KEY_UP:
+            if (direction != 1) direction = 0; // Up
+            break;
+        case KEY_DOWN:
+            if (direction != 0) direction = 1; // Down
+            break;
+        case KEY_LEFT:
+            if (direction != 3) direction = 2; // Left
+            break;
+        case KEY_RIGHT:
+            if (direction != 2) direction = 3; // Right
+            break;
+    }
+}
+
+
+void logic() {
+    Point prevSegment = snake.body[0];
+    Point prev2Segment;
+    
+    // Update the head of the snake based on the direction
+    switch (direction) {
+        case 0: // UP
+            snake.body[0].y--;
+            break;
+        case 1: // DOWN
+            snake.body[0].y++;
+            break;
+        case 2: // LEFT
+            snake.body[0].x--;
+            break;
+        case 3: // RIGHT
+            snake.body[0].x++;
+            break;
+    }
+
+    // Update the body segments
+    for (int i = 1; i < snake.length; i++) {
+        prev2Segment = snake.body[i];
+        snake.body[i] = prevSegment;
+        prevSegment = prev2Segment;
+    }
+
+    // Check if the snake has eaten the food
+    if (snake.body[0].x == food.x && snake.body[0].y == food.y) {
+        snake.length++;
+        generateFood(); // Generate new food
+    }
+}
+
+void generateFood() {
+    int validPosition = 0;
+    while (!validPosition) {
+        food.x = rand() % WIDTH;
+        food.y = rand() % HEIGHT;
+
+        // Check if the food position overlaps with the snake
+        validPosition = 1; // Assume valid until proven otherwise
+        for (int i = 0; i < snake.length; i++) {
+            if (snake.body[i].x == food.x && snake.body[i].y == food.y) {
+                validPosition = 0; // Found overlap, need to generate again
+                break;
+            }
+        }
+    }
+}
+
+int gameOver() {
+    // Check for wall collisions
+    if (snake.body[0].x < 0 || snake.body[0].x >= WIDTH || 
+        snake.body[0].y < 0 || snake.body[0].y >= HEIGHT) {
+        return 1; // Game over due to wall collision
+    }
+
+    // Check for self-collision
+    for (int i = 1; i < snake.length; i++) {
+        if (snake.body[i].x == snake.body[0].x && 
+            snake.body[i].y == snake.body[0].y) {
+            return 1; // Game over due to self-collision
+        }
+    }
+
+    return 0; // Game is still running
+}

snake.h

@@ -0,0 +1,29 @@
+/***************************************************************************//**
+
+  @file         snake.h
+
+  @author       Jiri Stach
+
+  @date         Created $date
+
+  @brief        Snake game declarations.
+
+  @copyright    Copyright (c), Jiri Stach.  Released under the Revised
+                BSD License.  See LICENSE.txt for details.
+
+*******************************************************************************/
+
+#ifndef SNAKE_H
+#define SNAKE_H
+
+
+void setup();
+void draw();
+void input();
+void logic();
+void generateFood();
+int gameOver();
+
+
+
+#endif // SNAKE_H