commit 988a7b9492c752baa4d7d0279fc5c58122c9db36
Author: En Yi <randomsity1@gmail.com>
Date:   Sat Feb 10 22:33:57 2018 +0000

    First commit

diff --git a/OuO.m b/OuO.m
new file mode 100755
index 0000000..ea04b3d
--- /dev/null
+++ b/OuO.m
@@ -0,0 +1,209 @@
+function OuO()
+%% Create the window
+clc;
+%Default Constants
+default_updatetime = 0.002;
+%Create the update timer, used for continuously updating the game screen
+update_t = timer('ExecutionMode','fixedSpacing','Period',default_updatetime,'TimerFcn',@update_face);
+blink_t = timer('ExecutionMode','singleShot','StartDelay',2,'TimerFcn',@set_blink);
+mood_t = timer('ExecutionMode','fixedSpacing','Period',5,'TimerFcn',@set_mood);
+
+%Create the window
+scrsz = get(0,'ScreenSize');
+start_dim = min(scrsz(3)/1.5,scrsz(4)/1.5);%Used for rescaling
+win = figure('DeleteFcn',@delete_timers,'ToolBar',...
+    'none','Name','OuO','NumberTitle','off','MenuBar','none',...
+    'Resize','off','Visible','off','Color',[0 0 0]/255,...
+    'Position',[[scrsz(3),scrsz(4)]/4.5 start_dim start_dim],...
+    'WindowButtonMotionFcn',@blank_function);
+
+%% Create the UI componenets
+face_axes = axes('Parent',win,'Position',[0 0 1 1]);
+
+set(win,'Visible','on')
+%% Define face features
+face_size = [4;4];
+lefteye_startpos = [1.1;2.5];
+lefteye_currentpos = lefteye_startpos;
+lefteye_setpos = lefteye_startpos;
+lefteye_size = 0.3;
+leftbrow_currentangles = [90 90];
+leftbrow_setangles = [90 90];
+leftbottom_currentangles = [90 90];
+leftbottom_setangles = [90 90];
+
+righteye_startpos = [2.9;2.5];
+righteye_currentpos = righteye_startpos;
+righteye_setpos = righteye_startpos;
+righteye_size = 0.3;
+rightbrow_currentangles = [90 90];
+rightbrow_setangles = [90 90];
+rightbottom_currentangles = [90 90];
+rightbottom_setangles = [90 90];
+
+blinking = 0;
+
+mouth_centre = [2;1.5];
+mouth_width = 0.5;
+mouth_shift = -1;
+mouth_setshift = -1;
+current_mood = 'Happy';
+
+set(face_axes,'Xlim',[0 face_size(1)],'Ylim',[0 face_size(2)],'Visible','off');
+start(update_t)
+start(mood_t)
+%% Callback functions
+    function update_face(~,~)
+        cla(face_axes)
+        [Xx,Yy] = get_mouse_pos();
+        detect_range = 1.5;
+        mouse_relative_pos = ([Xx;Yy] - face_size/2).*[1;1j];
+        if (abs(mouse_relative_pos)<detect_range)
+            mouse_ang = atan2d(Yy-lefteye_startpos(2),Xx-lefteye_startpos(1));
+            lefteye_setpos = pos_offset(lefteye_startpos,mouse_ang,lefteye_size);
+            mouse_ang = atan2d(Yy-righteye_startpos(2),Xx-righteye_startpos(1));
+            righteye_setpos = pos_offset(righteye_startpos,mouse_ang,righteye_size);
+            max_h = max(righteye_setpos(2),lefteye_setpos(2));
+            lefteye_setpos(2) = max_h;
+            righteye_setpos(2) = max_h;
+        else
+            lefteye_setpos = lefteye_startpos;
+            righteye_setpos = righteye_startpos;
+        end
+        
+        lefteye_currentpos = approach(lefteye_currentpos,lefteye_setpos,0.2);
+        righteye_currentpos = approach(righteye_currentpos,righteye_setpos,0.2);
+        if(~blinking)
+            leftbrow_currentangles = approach(leftbrow_currentangles,leftbrow_setangles,0.2);
+            leftbottom_currentangles = approach(leftbottom_currentangles,leftbottom_setangles,0.2);
+            rightbrow_currentangles = approach(rightbrow_currentangles,rightbrow_setangles,0.2);
+            rightbottom_currentangles = approach(rightbottom_currentangles,rightbottom_setangles,0.2);
+            lefteye_vert = calc_eye_vertex(lefteye_currentpos,lefteye_size,leftbrow_currentangles,leftbottom_currentangles);
+            righteye_vert = calc_eye_vertex(righteye_currentpos,righteye_size,rightbrow_currentangles,rightbottom_currentangles);
+        else
+            leftbrow_currentangles = approach(leftbrow_currentangles,[0 0],0.8);
+            leftbottom_currentangles = approach(leftbottom_currentangles,[0 0],0.8);
+            rightbrow_currentangles = approach(rightbrow_currentangles,[0 0],0.8);
+            rightbottom_currentangles = approach(rightbottom_currentangles,[0 0],0.8);
+            lefteye_vert = calc_eye_vertex(lefteye_currentpos,lefteye_size,leftbrow_currentangles,leftbottom_currentangles);
+            righteye_vert = calc_eye_vertex(righteye_currentpos,righteye_size,rightbrow_currentangles,rightbottom_currentangles);
+        end
+        
+        mouth_shift = approach(mouth_shift,mouth_setshift,0.2);
+        mouth_vert = calc_mouth_vertex(mouth_centre,mouth_width,mouth_shift);
+        
+        draw_vertices(lefteye_vert);
+        draw_vertices(righteye_vert);
+        draw_vertices(mouth_vert);
+        
+        if(strcmp(get(blink_t,'Running'),'off'))
+            start(blink_t)
+        end
+    end
+
+    function delete_timers(~,~)
+        %         alltimer = timerfindall('Parent',win);
+        %         stop(alltimer);
+        %         delete(alltimer);
+        stop(update_t);
+        delete(update_t);
+        stop(blink_t);
+        delete(blink_t);
+        stop(mood_t);
+        delete(mood_t);
+    end
+    function blank_function(~,~)
+    end
+    function set_blink(~,~)
+        if ~blinking
+            blinking = 1;
+            stop(blink_t);
+            set(blink_t,'StartDelay',0.1)
+        else
+            blinking  = 0;
+            stop(blink_t);
+            set(blink_t,'StartDelay',round((rand(1)*1.9+0.1)*1000)/1000)
+        end
+    end
+    function set_mood(~,~)
+        moods = {'Happy','Neutral','Sad'};
+        selected_mood = round(rand(1)*(length(moods)-1)+1);
+        current_mood = moods{selected_mood};
+        determine_mood_face();
+    end
+%% Non Callback Functions
+    function[eye_vertices] = calc_eye_vertex(centre,radius,brow_angles,bottom_angles)
+        eye_top_vertices = cutoff_circle_vertice(centre,radius,brow_angles);
+        eye_bottom_vertices = cutoff_circle_vertice(centre,radius,bottom_angles);
+        eye_bottom_vertices = fliplr(eye_bottom_vertices);
+        eye_bottom_vertices(2,:) = eye_bottom_vertices(2,:)- 2*(eye_bottom_vertices(2,:)-centre(2));
+        
+        eye_vertices = [eye_top_vertices eye_bottom_vertices];
+    end
+    function[mouth_vertices] = calc_mouth_vertex(centre,width,cen_y_offset)
+        P0 = centre - [width;0];P2 = centre + [width;0];
+        P1 = centre+[0;cen_y_offset];
+        mouth_vertices = quad_beizer(P0,P1,P2);
+        bot = quad_beizer(P0,P1-[0;0.1],P2);
+        bot = fliplr(bot);
+        mouth_vertices = [mouth_vertices bot];
+    end
+    function draw_vertices(vertices)
+        patch(vertices(1,:),vertices(2,:),[1 1 1],'Parent',face_axes)
+    end
+    function [offset_pos] = pos_offset(ori_pos,angle,radius_limit)
+        offset_pos = ori_pos+radius_limit*[cosd(angle);sind(angle)];
+    end
+    function[val] =  approach(start_val,end_val,incre)
+        val = start_val + (end_val - start_val)*incre;
+    end
+
+    function[X,Y]= get_mouse_pos()
+        mpos = get(face_axes,'CurrentPoint');
+        X = mpos(1,1);
+        Y = mpos(1,2);
+    end
+    function[vertices] = cutoff_circle_vertice(centre,radius,end_angles)
+        n_of_vertices = 7+1; %because need to reach 90 degrees
+        left_increment = end_angles(1)/(n_of_vertices-1);
+        right_increment = end_angles(2)/(n_of_vertices-1);
+        vertices = zeros(2,n_of_vertices*2);
+        for i = 1:n_of_vertices
+            theta = 180 - left_increment*(i-1);
+            vertices(1,i) = centre(1)+radius*cosd(theta);
+            vertices(2,i) = centre(2)+radius*sind(theta);
+            theta = 0 + right_increment*(i-1);
+            vertices(1,end+1-i) = centre(1)+radius*cosd(theta);
+            vertices(2,end+1-i) = centre(2)+radius*sind(theta);
+        end
+    end
+    function[vertices] = quad_beizer(P0,P1,P2)
+        t = 0:0.05:1;
+        vertices = zeros(2,length(t));
+        for n = 1:length(t)
+            vertices(:,n) = power(1-t(n),2).*P0 + 2*(1-t(n))*t(n).*P1 + power(t(n),2).*P2;
+        end
+    end
+    function determine_mood_face()
+        switch(current_mood)
+            case 'Happy'
+                leftbrow_setangles = [90 90];
+                leftbottom_setangles = [90 90];
+                rightbrow_setangles = [90 90];
+                rightbottom_setangles = [90 90];
+                mouth_setshift = -0.5;
+            case 'Neutral'
+                leftbrow_setangles = [90 90];
+                leftbottom_setangles = [90 90];
+                rightbrow_setangles = [90 90];
+                rightbottom_setangles = [90 90];
+                mouth_setshift = 0;
+            case 'Sad'
+                leftbrow_setangles = [30 60];
+                leftbottom_setangles = [90 90];
+                rightbrow_setangles = [60 30];
+                rightbottom_setangles = [90 90];
+                mouth_setshift = 1;
+        end
+    end
+end
\ No newline at end of file