feat: add Snake and Ladders game (single player)

games/snakes_and_ladders.c

@@ -0,0 +1,81 @@
+/*
+ * Snake and Ladders Game (Single Player)
+ * Author: KarthikeyaPila
+ *
+ * A simple console-based implementation of Snake and Ladders.
+ * Roll the dice and try to reach exactly 100.
+ * Ladders move you up, snakes move you down.
+ *
+ * Compile: gcc snake_game.c -o snake_game
+ * Run: ./snake_game
+ */
+
+
+#include <stdio.h>  // for input output functions. -> printf, scanf
+#include <stdlib.h> // for memory allocated functions -> calloc
+#include <time.h>   // used with srand()
+
+int update_pos_if_ladder_snake(int player_position) {
+    int ladder_snake_pos[16][2] = {                                    // -> these are the ladder and snake positions.
+        {4, 14}, {9, 31}, {20, 38}, {28, 84}, {40, 59},                // -> if the 0th index is greater than 1st index => represents a snake
+        {51, 67}, {63, 81}, {71, 91}, {17, 7}, {54, 34},               // -> if the 0th index is lesser than the 1st index => represents a ladder
+        {62, 19}, {64, 60}, {87, 24}, {93, 73}, {95, 75}, {99, 2}};
+
+    for (int j = 0; j < 16; j++) {
+        if (player_position == ladder_snake_pos[j][0])
+        {
+            player_position = ladder_snake_pos[j][1];
+            break; // Once matched, no need to check further
+        }
+    }
+
+    return player_position;
+}
+
+int main(){
+    int no_of_players = 1;
+
+    printf("Let's play Snake and Ladders! (Single Player Mode)\n");
+    printf("Let's start the game!\n");
+
+    int *player_position_arr = calloc(no_of_players, sizeof(int));
+
+    printf("\nOkay, let's start the game.\n");
+
+    printf("You are currently at: %d\n", player_position_arr[0]);
+
+    srand(time(NULL));  // Seed random generator once here
+
+    while (player_position_arr[0] < 100){
+        printf("\nRoll the dice by pressing Enter\n");
+        while (getchar() != '\n');  // Wait for Enter key (ignore other characters)
+
+        int dice = (rand() % 6) + 1;                        // this gives a value between 1 and 6 both included.
+        printf("Dice value: %d\n", dice);
+
+        if (player_position_arr[0] + dice > 100) {
+            dice = 0; 
+            printf("Oops, you need the exact number to reach 100.\n");
+        }
+
+        player_position_arr[0] += dice;
+        int updated_pos = update_pos_if_ladder_snake(player_position_arr[0]);
+
+        if (updated_pos > player_position_arr[0]) {         // this executes when the late r position is higher than the previous position => got up a ladder
+            printf("Let's go! You climbed a ladder!\n");
+        }
+        else if (updated_pos < player_position_arr[0]) {    
+            printf("Oh no! You got bitten by a snake.\n");  // this executes when the later position is lower than the previous position => got bitten by a snake.
+        }
+
+        player_position_arr[0] = updated_pos;               // assigns the new player position after the dice roll.
+        printf("You are now at: %d\n", updated_pos);
+    }
+
+    //the loop ends when the player reaches 100.
+    printf("\nCongrats, you won!!\n");
+
+    free(player_position_arr);
+
+    return 0;
+}