Unable to write loops for self playing connect4 win conditions

clc,clf

col = 1;

row = 1;

board = zeros(6,7); %Creates a board of zeros

maxturns = 0;

vertwin = 0;

horizwin = 0;

leftdiagwin = 0;

rightdiagwin = 0;

while maxturns < 42

maxturns = maxturns + 1; %increments maxturns bcol 1 each time pcOne puts a 1 on the board

pcOne = randi(7); % pcOne generates a number 1-7

col = pcOne; %pcOne sends the number to col to place 1 in the correct column

while (board(row,col)~=0)%loops the input of row and col to ensure it isnt replacing a number that is already in place

pcOne = randi(7);

col = randi(7);

end

row = 6; %starts the row at the bottom of the array

played = 0;

while (played == 0)

if board(row,col) == 0

board(row,col) = 1; % if board space = 0 then it is replaced with a 1

played = 1; %when the loop is true played will equal 1 and exit the loop

end

row = row - 1;

if (row == 0)

row = row + 1;

end

end

if vertwin == 0 %check vert win for pcOne

if board(row,col) == 1

if board(row + 1,col) == 1

if board(row + 2,col) == 1

if board(row + 3,col) == 1

fprintf('pcOne Wins');

end

end

end

end

end

%add in checking loops

maxturns = maxturns + 1; %increments maxturns by 1 each time pcOne puts a 1 on the board

pcTwo = randi(7); % pcOne generates a number 1-7

col = pcTwo; %pcOne sends the number to col to place 1 in the correct column

while (board(row,col)~=0)%loops the input of row and col to ensure it isnt replacing a number that is alreadcol in place

pcTwo = randi(7);

col = randi(7);

end

row = 6; %starts the row at the bottom of the array

played = 0;

while (played == 0)

if board(row,col) == 0

board(row,col) = 2; % if board space = 0 then it is replaced with a 1

played = 1; %when the loop is true played will equal 1 and exit the loop

end

row = row - 1;

if (row == 0)

row = row + 1;

end

end

%add in checking loops

disp(board); %should display a board full of 1' and 2's

end% loop ends after 42 moves are made

fprintf('Draw, Max Number of Moves Made!');

[David Hill]

You need to explain your question in more detail.

[Preston Waddell]

i am trying to create a loop to check for win conditions for either 1's or 2's. but when i attempt to create the code it either doesnt finish the code, or it become stuck in the loop i created.

Answer 1

[Swatantra Mahato]

Hi,

Assuming you want your code to end execution once the win condition is reached, you can use the return function as follows

 if board(row + 3,col) == 1
        fprintf('pcOne Wins');
        return;
 end

Additionally, for code getting stuck in the loop, you may want to verify that the variables used for checking the exit condition of the loop are being updated correctly.

Hope this helps