initial push

.gitignore

@@ -0,0 +1 @@
+four

README.md

@@ -0,0 +1,10 @@
+# Connect Four in C
+
+## Usage
+```bash
+./build
+```
+and then:
+```bash
+./four
+```

build.sh

@@ -0,0 +1,6 @@
+ #!/bin/bash
+
+set -xe
+CFLAGS="-Wall -Werror -ggdb"
+
+gcc $CFLAGS -o four main.c

main.c

@@ -0,0 +1,125 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <assert.h>
+// connect four
+
+#define ROWS 7
+#define COLUMNS 6
+#define TIME 0.6
+
+#define BOLDYELLOW  "\033[1m\033[33m"      /* Bold Yellow */
+#define BOLDRED     "\033[1m\033[31m"      /* Bold Yellow */
+#define BOLDWHITE   "\033[1m\033[37m"      /* Bold White */
+#define RESET       "\033[0m"
+
+char board[ROWS][COLUMNS];
+
+void print_board();
+void clear_board();
+void player_choice(char player);
+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');
+    print_board();
+    player_choice('O');
+    print_board();
+
+	return 0;
+}
+
+
+void print_board(){
+    system("clear");
+    printf("\nFree Spaces: %d\n", check_free_space());
+    int r, c;
+    c = 0;
+    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'){
+                printf("[ ");
+                printf(BOLDRED "%c" RESET ,board[r][c]);
+                printf(" ]");
+            }
+            else if(board[r][c] == '0'){
+                printf("[ ");
+                printf(BOLDYELLOW "%c" RESET ,board[r][c]);
+                printf(" ]");
+            }
+            else{
+                printf("[ %c ]", board[r][c]);
+            }
+        }
+        printf("\n");
+    }
+}
+
+
+void clear_board(){
+    int r, c;
+    for(r = 0; r < ROWS; ++r){
+        for(c = 0; c < COLUMNS; ++c){
+            board[r][c] = ' ';
+        } 
+    }
+}
+
+void player_choice(char player){
+    unsigned int time = 30000;
+    int pc;
+
+    printf(BOLDWHITE "\n[%c]Enter column (1-6)\n> ", player);
+    scanf("%d", &pc);
+    pc--; //arrays start with 0
+
+
+    //TODO: replace these
+    assert(pc < 6);
+    assert(pc < 6);
+
+
+    for(int r = 0; board[r][pc] == ' '; ++r){
+
+        // Check if the next tile is not empty (occupied)
+        if(board[r+1][pc] != ' '){
+            board[r][pc] = player;
+            break;
+        }
+        //check if we've hit the last row
+        if(r >= COLUMNS){
+            board[r][pc] = player;
+            break;
+        }
+
+        // Animation
+        board[r][pc] = player;
+        print_board();
+        usleep(time);
+        board[r][pc] = ' ';
+        print_board();
+        usleep(time);
+    }
+}
+
+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;
+        } 
+    }
+
+    return sp;
+}