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https://github.com/m5stack/StackChan.git
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Forairaaaaa
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
/*
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* SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
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*
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include "../modifiable.h"
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#include <hal/hal.h>
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#include <cstdint>
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#include <cmath>
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namespace stackchan {
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/**
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* @brief
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*
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*/
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class BreathModifier : public Modifier {
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public:
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/**
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* @param destroyAfterMs 持续时间（0 为永久）
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* @param amplitude 呼吸幅度，单位像素
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* @param breathCycleMs 呼吸一次的周期（吸+呼）
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* @param updateIntervalMs 更新间隔
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*/
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BreathModifier(uint32_t destroyAfterMs = 0, int amplitude = 16, uint32_t breathCycleMs = 6600,
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uint32_t updateIntervalMs = 600)
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: _amplitude(amplitude), _breath_cycle_ms(breathCycleMs), _update_interval_ms(updateIntervalMs)
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{
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_start_tick = GetHAL().millis();
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if (destroyAfterMs > 0) {
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_destroy_at = _start_tick + destroyAfterMs;
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_has_lifetime = true;
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}
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}
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void _update(Modifiable& stackchan) override
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{
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if (!stackchan.hasAvatar()) return;
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uint32_t now = GetHAL().millis();
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// 销毁逻辑
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if (_has_lifetime && now >= _destroy_at) {
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reset_position(stackchan.avatar()); // 销毁前复位
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requestDestroy();
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return;
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}
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if (now - _last_update_tick < _update_interval_ms) {
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return;
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}
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_last_update_tick = now;
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// 使用正弦波计算偏移量
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// (now - _start_tick) / cycle 得到进度，乘以 2PI 传给 sin
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float phase = (float)((now - _start_tick) % _breath_cycle_ms) / _breath_cycle_ms;
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float sin_val = sinf(phase * 2.0f * M_PI);
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// 计算当前偏移
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int current_offset = static_cast<int>(sin_val * _amplitude);
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// 应用增量偏移
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apply_relative_offset(stackchan.avatar(), current_offset);
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}
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private:
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void apply_relative_offset(avatar::Avatar& avatar, int new_offset)
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{
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// 计算本次需要移动的差值
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int delta = new_offset - _last_applied_offset;
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if (delta == 0) return;
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// 批量移动五官
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move_component(avatar.leftEye(), delta);
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move_component(avatar.rightEye(), delta);
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move_component(avatar.mouth(), delta);
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_last_applied_offset = new_offset;
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}
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void move_component(avatar::Feature& comp, int delta_y)
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{
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auto pos = comp.getPosition();
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pos.y += delta_y;
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comp.setPosition(pos);
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}
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void reset_position(avatar::Avatar& avatar)
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{
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// 将偏移归零
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apply_relative_offset(avatar, 0);
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}
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int _amplitude;
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uint32_t _breath_cycle_ms;
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uint32_t _update_interval_ms;
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uint32_t _start_tick = 0;
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uint32_t _last_update_tick = 0;
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uint32_t _destroy_at = 0;
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bool _has_lifetime = false;
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int _last_applied_offset = 0; // 记录上一次应用的偏移量，用于增量更新
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};
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} // namespace stackchan
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