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Faster/Stronger/Better

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abcpea 2026-01-18 13:21:30 +11:00
parent 9f9ec5d754
commit 5b7585a3d8
1 changed files with 9 additions and 10 deletions
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19
src/pc/controller/controller_sdl2.c
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@ -180,21 +180,20 @@ static inline void update_analog_stick(s8 *stick_x, s8 *stick_y,
int16_t input_x, int16_t input_y) {
static const float FSHRT_MAX = 32768.f;
uint32_t magnitude_sq = (uint32_t)(input_x * input_x) + (uint32_t)(input_y * input_y);
uint32_t stickDeadzoneActual = configStickDeadzone * DEADZONE_STEP;
float magnitude_sq = (float)(input_x * input_x) + (float)(input_y * input_y);
float deadzone = configStickDeadzone * DEADZONE_STEP;
if (magnitude_sq > (uint32_t)(stickDeadzoneActual * stickDeadzoneActual)) {
if (magnitude_sq > (deadzone * deadzone)) {
float magnitude = sqrt(magnitude_sq);
float dir_x = (float)input_x / magnitude;
float dir_y = (float)input_y / magnitude;
float scale = 1.f / (fabs(dir_x) >= fabs(dir_y) ? fabs(dir_x) : fabs(dir_y));
float deadzone = stickDeadzoneActual / (FSHRT_MAX);
float scale = 1.f / fmaxf(fabsf(dir_x), fabsf(dir_y));
float max_magnitude = FSHRT_MAX * scale;
magnitude /= FSHRT_MAX;
magnitude = scale * (magnitude - deadzone);
magnitude /= scale - deadzone;
magnitude *= 127;
magnitude = magnitude >= 127 ? 127 : magnitude;
magnitude -= deadzone;
magnitude *= max_magnitude / (max_magnitude - deadzone);
magnitude /= 0x100;
magnitude = fminf(magnitude, scale * 127.f);
*stick_x = dir_x * magnitude;
*stick_y = -dir_y * magnitude;