There is such a game: https://github.com/moonbench/isometric-rpg?tab=readme-ov-file

Someone can tell me how to make it so that the movement is based on a mouse click where the cursor is pressed.
And in general, I just can’t figure out how to make a click on one of the tiles.

I don’t understand, the cursor is drawn on the canvas, the coordinates are different.
The tiles are somehow drawn differently.

I’m trying to do this in the bind_mouse function in the file js/core/engine.js

I tried to do this:

engine.canvas.addEventListener("click", function (event) {
   //...
   const rect = engine.canvas.getBoundingClientRect();
   const mouseX = event.clientX - rect.left;
   const mouseY = event.clientY - rect.top;
   for (let i = 0; i < engine.ents.length; i++) {
       const entity = engine.ents[i];
       if (mouseX >= entity.x && mouseX <= entity.x + entity.width 
       && mouseY >= entity.y && mouseY <= entity.y + entity.height) {
            entity.showClickPoint = true;
       }
   }
   //...
});

And so too:

engine.canvas.addEventListener("click", function (event) {
   //...
   const rect = engine.canvas.getBoundingClientRect();
   const mouseX = event.clientX - rect.left;
   const mouseY = event.clientY - rect.top;
   for (let i = 0; i < engine.ents.length; i++) {
       const entity = engine.ents[i];
       const isoMouseX = (2 * mouseY + mouseX) / 2;
       const isoMouseY = (2 * mouseY - mouseX) / 2;
       if (isoMouseX >= -entity.width / 2 &&
           isoMouseX <= entity.width / 2 &&
           isoMouseY >= -entity.height / 2 &&
           isoMouseY <= (entity.width / 4 - entity.z) - (-entity.width / 4 - entity.height / 2 - entity.z)) {
           entity.showClickPoint = true;
       }
   }
   //...
});

I added a method: setEntities at engine:

function setEntities(engine, entitys) {
    if (!engine.ents) {
        engine.ents = entitys;
    }
}

Well, in the method: create added:

engine.setEntities = function (entity) {
    setEntities(engine, entity);
};

And in the main file, he wrote: game.engine.setEntities(entities);

Nothing works, how to do it right?
Can you explain please.
I need to find out which tile was clicked on, and somehow make the character move after the click, to the cursor where the tile was clicked.