ControlsDummy Class

ControlsDummy my_controls = new ControlsDummy(); // custom controls
int inventory_toggled = false; // show item inventory toggle

void update_input(Controls controls) {
	// Check if the key is pressed and update the state of the specified control.
	// You can use both 'i' or ASCII code (105).
	controls.setState(CONTROLS_STATE_AUX_0,engine.app.getKeyState('i'));
}

// Implement your game logic for showing or hiding item inventory.
void update_game_logic(Controls controls) {
	// If the control state is positive (the key has been pressed), toggle item
	// inventory on and off.
	if(controls.getState(CONTROLS_STATE_AUX_0)) {
		inventory_toggled = !inventory_toggled;
	}
}

/*
 */
// Update controls each frame according to the user input.
int update() {
	update_input(my_controls);
	update_game_logic(my_controls);
}