How Can I Make a Snake Game's Body Follow Its Head?

How do I achieve that the snake's body parts follow the snake's head on its path, when the snake's head moves ahead?

The implementation of a snake game typically involves a chain-like movement of the snake's body, ensuring that each body part follows the head's path. This is a key aspect of creating a realistic-looking snake. The solution to accomplish this involves two main approaches:

1. Grid-Based Snake:

In this approach, the snake and its body parts are constrained to a predefined grid. Each movement of the head results in the addition of a new grid cell to the start of the body while the last cell at the tail is removed. This ensures that the body moves in discrete steps, resembling a chain linking together the individual grid cells.

• Implementation:

  • Maintain a list of tuples representing the positions of the body parts in the grid.
  • When the head moves, add a new tuple to the start of the list and remove the last tuple from the end.

2. Continuous-Movement Snake:

This method offers more fluid movement for the snake. The snake is no longer constrained to a grid, and its position is tracked using a list of previously visited points. The body parts are then placed along this path based on their distance from the head.

• Implementation:

  • Create a list that stores the head's positions as it moves.
  • Compute the Euclidean distance between the last body part and subsequent points in the track list.
  • If the distance exceeds a threshold, add a new body part at the corresponding point.

This approach ensures that as the head moves, the body parts smoothly transition to follow its path.

In the example code provided, a simple implementation of the grid-based approach is demonstrated. Here, when the snake eats food, a new grid cell is added to the snake's length.

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