Keyboard support

[Flix01]

Hi, I've seen that a gamepad is mandatory, and that the "keyboard support patch" proposed here has a broken link.

Here are my changes in file controller.cpp:

vec3 gamepad_get_stick(int stick, const float deadzone = 0.2f)
{
// I've replaced all the original content of this function with the following:
vec3 pad(0,0,0);float am = 1.f;
if (IsKeyDown(KEY_RIGHT_SHIFT) || IsKeyDown(KEY_LEFT_SHIFT)) am*=0.5f;  // use SHIFT to slow down/walk
if (IsKeyDown(KEY_RIGHT_CONTROL) || IsKeyDown(KEY_LEFT_CONTROL)) am*=2.f; // use CTRL to speed up
if (stick==GAMEPAD_STICK_LEFT)	{
        // use ARROW keys to move the character
	if (IsKeyDown(KEY_RIGHT)) pad.x+=am;
	if (IsKeyDown(KEY_LEFT)) pad.x-=am; 
	if (IsKeyDown(KEY_UP)) pad.z-=am;
	if (IsKeyDown(KEY_DOWN)) pad.z+=am;
}
else if (stick==GAMEPAD_STICK_RIGHT)	{
        // use the number pad to move the camera
	if (IsKeyDown(KEY_KP_6)) pad.x-=am;
	if (IsKeyDown(KEY_KP_4)) pad.x+=am; 
	if (IsKeyDown(KEY_KP_8)) pad.z+=am;
	if (IsKeyDown(KEY_KP_2)) pad.z-=am;
}
return pad;
}

This works for me (I'm on Ubuntu Linux).
I'm not making a pull request. I've just posted my code here in case somebody is interested.

@orangeduck: feel free to close this issue whenever you want, and thanks for sharing the project!

[orangeduck]

Thanks!

[Maekdzp]

Thanks for the keyboard support. And I notice that strafe support is missing, which is quite simple. In case you just forgot that, here are my changes in controller.cpp:

bool desired_strafe_update()
{
    //return IsGamepadButtonDown(GAMEPAD_PLAYER, GAMEPAD_BUTTON_LEFT_TRIGGER_2) > 0.5f;
    return IsKeyDown(KEY_LEFT_ALT); // use left ALT to strafe
}