Class: Keyboard

Members

<static> Keyboard.CHIP8_KEYS :Object

Maps chip8 keys to PC keys. Populated in constructor.

Type:

• Object

Source:

• chip8-keyboard.js, line 138

<static> Keyboard.PC_KEY_MAP :Object

Maps PC keys to chip8 keys.

Type:

• Object

Properties:

Name	Type	Default	Description
"88"	Object	0
"49"	Object	1
"50"	Object	2
"51"	Object	3
"81"	Object	4
"87"	Object	5
"69"	Object	6
"65"	Object	7
"83"	Object	8
"68"	Object	9
"90"	Object	A
"67"	Object	B
"52"	Object	C
"82"	Object	D
"70"	Object	E
"86"	Object	F

Source:

• chip8-keyboard.js, line 113

Methods

isKeyPressed(key) → {boolean}

Checks if given key is pressed.

Parameters:

Name	Type	Description
key	number	key number (0x0 - 0xF)

Source:

• chip8-keyboard.js, line 60

Returns:

true if key is pressed, false otherwise

Type

boolean

keyDown(chip8Key)

Simulates key down.

Parameters:

Name	Type	Description
chip8Key	number	key number (0x0 - 0xF)

Source:

• chip8-keyboard.js, line 72

keyUp(chip8Key)

Simulates key up.

Parameters:

Name	Type	Description
chip8Key	number	key number (0x0 - 0xF)

Source:

• chip8-keyboard.js, line 85

onNextKeyPressed(chip8Key)

This method is called and set to NOP after each key down.

Parameters:

Name	Type	Description
chip8Key	number	pressed key number (0x0 - 0xF)

Source:

• chip8-keyboard.js, line 41

reset()

Resets keyboard state.

Source:

• chip8-keyboard.js, line 96