-
Notifications
You must be signed in to change notification settings - Fork 1
Snake Object
snakeObject.js
Snake(map)
Creates a new Snake object.
Parameters:
map
The expected parameter is an instance of the Map Object
To be added.
getDirection(keyCode, keys)
Parameters:
keyCode
keys
This function takes in two parameters. The pressed key code from event handling and a key object, both reside in canvas.js. The function sets the snake direction property as mentioned below.
What the function returns:
Does not return any value. It sets the snake object property direction to one of the following four states:
LEFT, RIGHT, UP or DOWN.
directionChange(map)
Parameters:
map
The expected parameter is an instance of the Map Object
What the function returns:
Moves the head of the snake one unit in the current direction of movement.
isOutOfBounds(map)
Parameters:
map
The expected parameter is an instance of the Map Object
What the function returns:
Checks if the position of the head has the same x-coordinate or y-coordinate as either of the four walls. Returns true in that case.
eatFood(food)
Parameters:
food
The expected parameter is an instance of the Food Object
What the function returns:
Checks if the position of the head matches with the x-coordinate and y-coordinate of the current food. Returns true if that's the case, returns false if not.
incrementTail()
Parameters:
This function takes no parameters.
What the function returns:
Defines variable headPosition with the current x- and y-coordinates of the head. The function proceeds to unshift the headPosition and check whether or not the length of the Snake object-array.
isTouchingItself()
Parameters:
This function takes no parameters.
What the function returns:
Loops through the x- and y- coordinates of every tail joint and checks if the head has the same position as any of them. Returns true if that's the case, returns false if not.
resetSnake(map)
Parameters:
map
The expected parameter is an instance of the Map Object
What the function returns:
Does not return anything. The function sets the snake object back to its initial state. I.e. when the game needs to be reset.
incrementMove()
Parameters:
This function takes no parameters.
What the function returns:
Does not return anything. Simply increments the property moves of the snake object, by one.