changes etc

main.c

@@ -3,56 +3,61 @@
 #include <time.h>
 #include <unistd.h>
 #include <assert.h>
-// connect four
 
+/* Game Specific defines */
 #define ROWS 7
 #define COLUMNS 6
 #define TIME 0.6
+#define PLAYER1 '0'
+#define PLAYER2 'X'
 
+/* Printf colour defines */
 #define BOLDYELLOW  "\033[1m\033[33m"      /* Bold Yellow */
-#define BOLDRED     "\033[1m\033[31m"      /* Bold Yellow */
+#define BOLDRED     "\033[1m\033[31m"      /* Bold Red */
 #define BOLDWHITE   "\033[1m\033[37m"      /* Bold White */
 #define RESET       "\033[0m"
 
+/* Global board, saves passing 2D array pointers */
 char board[ROWS][COLUMNS];
 
 void print_board();
 void clear_board();
 void player_choice(char player);
+void ai_choice(char player);
+char check_win();
 int check_free_space();
 
 int main(int argc, char *argv[]){
     clear_board();
-
-    print_board();
-    player_choice('0');
-    print_board();
-    player_choice('O');
-    print_board();
-    player_choice('0');
+    while(check_free_space() != 0){
         print_board();
-    player_choice('O');
+        player_choice(PLAYER1);
         print_board();
+        player_choice(PLAYER2);
+    }
 
 	return 0;
 }
 
 
 void print_board(){
-    system("clear");
-    printf("\nFree Spaces: %d\n", check_free_space());
     int r, c;
     c = 0;
+    system("clear");
+    printf("\nFree Spaces: %d\n", check_free_space());
+
     printf(BOLDWHITE "  1    2    3    4    5    6    \n" RESET);
+
     for(r = 0; r < ROWS; ++r){
-        //printf(BOLDWHITE "%d\t" RESET, r+1);
         for(c = 0; c < COLUMNS; ++c){
-            if(board[r][c] == 'O'){
+            //PLAYER 1 COLOURS
+            if(board[r][c] == PLAYER1){
                 printf("[ ");
                 printf(BOLDRED "%c" RESET ,board[r][c]);
                 printf(" ]");
             }
-            else if(board[r][c] == '0'){
+            //PLAYER 2 COLOURS
+            else if(board[r][c] == PLAYER2){
                 printf("[ ");
                 printf(BOLDYELLOW "%c" RESET ,board[r][c]);
                 printf(" ]");
@@ -79,16 +84,14 @@ void player_choice(char player){
     unsigned int time = 30000;
     int pc;
 
-    printf(BOLDWHITE "\n[%c]Enter column (1-6)\n> ", player);
+    printf(BOLDWHITE "\n[%c] Enter column (1-6)\n> " RESET, player);
     scanf("%d", &pc);
-    pc--; //arrays start with 0
-
-
-    //TODO: replace these
-    assert(pc < 6);
-    assert(pc < 6);
-
 
+    if(pc > 6){
+       printf(BOLDRED "\n[%c] Cannot play here, skipping...\n" RESET, player);
+       sleep(1);
+    } else {
+        pc--; //arrays start with 0
         for(int r = 0; board[r][pc] == ' '; ++r){
 
             // Check if the next tile is not empty (occupied)
@@ -111,13 +114,28 @@ void player_choice(char player){
             usleep(time);
         }
     }
+}
+
+void ai_choice(char player){
+    //TODO: Implement AI
+}
+
+char check_win(){
+    char flag = ' ';
+
+
+    return flag; 
+
+}
 
 int check_free_space(){
     int r, c;
     int sp = 0;
+
     for(r = 0; r < ROWS; ++r){
         for(c = 0; c < COLUMNS; ++c){
-            if(board[r][c] == ' ') ++sp;
+            if(board[r][c] == ' ') 
+                ++sp;
         } 
     }