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Joystick sensitivity for player movement (#11262)

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This commit deprecates the forward, backward, left, and right binary
inputs currently used for player movement in the PlayerControl struct.
In their place, it adds the movement_speed and movement_direction
values, which represents the player movement is a polar coordinate
system.

movement_speed is a scalar from 0.0 to 1.0. movement_direction is
an angle from 0 to +-Pi:

	       FWD
	        0
	        _
	 LFT   / \   RGT
	-Pi/2 |   | +Pi/2
	       \_/
	       +-Pi
	       BCK

Boolean movement bits will still be set for server telegrams and
Lua script invocations to provide full backward compatibility.
When generating these values from an analog input, a direction is
considered active when it is 22.5 degrees away from either
orthogonal axis.

Co-authored-by: Markus Koch <markus@notsyncing.net>
Co-authored-by: sfan5 <sfan5@live.de>
This commit is contained in:
NeroBurner 2021-08-27 20:24:24 +02:00 • committed by GitHub
parent 149d8fc8d6
commit 1d69a23ba4
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 137 additions and 98 deletions
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24
src/client/joystick_controller.cpp
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@ -160,6 +160,7 @@ JoystickController::JoystickController() :
for (float &i : m_past_pressed_time) {
i = 0;
}
m_layout.axes_deadzone = 0;
clear();
}
@ -251,10 +252,27 @@ void JoystickController::clear()
memset(m_axes_vals, 0, sizeof(m_axes_vals));
}
s16 JoystickController::getAxisWithoutDead(JoystickAxis axis)
float JoystickController::getAxisWithoutDead(JoystickAxis axis)
{
s16 v = m_axes_vals[axis];
if (abs(v) < m_layout.axes_deadzone)
return 0;
return v;
return 0.0f;
v += (v < 0 ? m_layout.axes_deadzone : -m_layout.axes_deadzone);
return (float)v / ((float)(INT16_MAX - m_layout.axes_deadzone));
}
float JoystickController::getMovementDirection()
{
return atan2(getAxisWithoutDead(JA_SIDEWARD_MOVE), -getAxisWithoutDead(JA_FORWARD_MOVE));
}
float JoystickController::getMovementSpeed()
{
float speed = sqrt(pow(getAxisWithoutDead(JA_FORWARD_MOVE), 2) + pow(getAxisWithoutDead(JA_SIDEWARD_MOVE), 2));
if (speed > 1.0f)
speed = 1.0f;
return speed;
}