Hey Marcelo,
It is my understanding that you want to develop a collision detection system between the mouse and the walls for a maze. You do not want to use if-else statements to do the same.
It is my assumption that you have been able to extract the coordinates of the walls from the image. If not, you can refer to the code attached here.
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A workaround could be to use for loops to achieve the same result. An array can be created in which 2 points(that define a line segment) can be added for every wall in the maze. You could also define 'x' points as extremities which will define the border for the mouse (e.g. 4 corners if the mouse has a rectangular bounding box). A for loop can then be added to check for any collisions. You can further refer to this answer to know about collision detection between a point and a line.
Here is pseudo code for the same:
%Wall_Array is the array that contains identifiers for all the walls,
%Mouse_Array is the array that contains extremities of the mouse.
%shortest_distance is a function that'll give the shortest distance between
%a point and a line.
for i = 1:length(Wall_Array)
for i2 = 1:length(mouse_Array)
if shortest_distance(mouse_Array(i2), Wall_Array(i) == 0)
%Collision
end
end
