36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
#include <catch2/catch_test_macros.hpp>
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#include <fmt/core.h>
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#include "systems.hpp"
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#include <cmath>
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#include <numbers>
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TEST_CASE("figure out best rotation direction", "[systems-rotate]") {
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Matrix map = matrix::make(3, 3);
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Point player_at{1, 1};
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map[player_at.y][player_at.x] = 2;
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for(matrix::box target{map, player_at.x, player_at.y, 1}; target.next();) {
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for(matrix::box aiming_at{map, player_at.x, player_at.y, 1}; aiming_at.next();) {
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map[aiming_at.y][aiming_at.x] = 10;
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float target_dx = float(player_at.x) - float(target.x);
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float target_dy = float(player_at.y) - float(target.y);
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float aiming_dx = float(player_at.x) - float(aiming_at.x);
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float aiming_dy = float(player_at.y) - float(aiming_at.y);
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float target_angle = atan2(-target_dy, target_dx) * (180.0 / std::numbers::pi);
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float aiming_angle = atan2(-aiming_dy, aiming_dx) * (180.0 / std::numbers::pi);
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float diff = target_angle - aiming_angle;
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double normalized = fmod(diff + 360.0, 360.0);
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REQUIRE(normalized >= 0);
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REQUIRE(normalized <= 360);
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map[aiming_at.y][aiming_at.x] = 0;
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}
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}
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}
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