how to make a simple jump game in matlab

main.m
clc; 
close all;
clear all;
set(0,'DefaultFigureWindowStyle','docked')

% Initializations
hFig = figure(1);
set(hFig, 'Position', [0 0 800 600])
axis([0 100 0 100])
hold on
x_pos = 10;
y_pos = 10;
hBlock = rectangle('Position',[x_pos y_pos 10 10],'FaceColor',[1 0 0]);
jumping = false;


while true
    % Detect key press
    c = get(hFig, 'CurrentCharacter');
    if(strcmp(c, ' '))
        jumping = true;
        t = 0:0.1:1;
        for i = 1:length(t)
            y_pos = 10 + 20*t(i) - 100*t(i).^2;
            set(hBlock, 'Position',[x_pos y_pos 10 10]);
            pause(0.01);
        end
        jumping = false;
    end
    
    if(~jumping)
        % Move the character
        x_pos = x_pos + 1;
        set(hBlock, 'Position',[x_pos y_pos 10 10]);
        pause(0.01);
    end
end
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