Max Gramser
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
#pragma once
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#include <algorithm>
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#include <cmath>
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#include <cstdint>
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namespace cyd {
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// Work in tenths of a degree and always clamp AFTER rounding.
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inline int quantize_temperature(int value, int minimum, int maximum, int step) {
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step = std::max(1, step);
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value = std::clamp(value, minimum, maximum);
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const int snapped = minimum + static_cast<int>(std::lround(
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static_cast<double>(value - minimum) / step)) * step;
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return std::clamp(snapped, minimum, maximum);
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}
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class TouchGuard {
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public:
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void begin(uint32_t now, int x = 0, int y = 0) {
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started_ = now;
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accepted_ = false;
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moved_ = false;
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start_x_ = x;
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start_y_ = y;
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}
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void update(int x, int y) {
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// A contact that jumps to another target must never become a tile tap.
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if (std::abs(x - start_x_) > 18 || std::abs(y - start_y_) > 18) moved_ = true;
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}
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bool accept(uint32_t now, int tile) {
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if (accepted_ || moved_ || now - started_ < 60) return false;
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if (has_previous_ && tile == previous_tile_ && now - previous_ < 600) return false;
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accepted_ = true;
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has_previous_ = true;
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previous_tile_ = tile;
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previous_ = now;
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return true;
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}
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private:
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uint32_t started_{0}, previous_{0};
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int previous_tile_{-1};
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int start_x_{0}, start_y_{0};
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bool moved_{false};
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bool accepted_{false}, has_previous_{false};
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};
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inline TouchGuard touch_guard;
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} // namespace cyd
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