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| author | Kelly Rauchenberger <fefferburbia@gmail.com> | 2021-02-06 21:16:27 -0500 |
|---|---|---|
| committer | Kelly Rauchenberger <fefferburbia@gmail.com> | 2021-02-06 21:16:27 -0500 |
| commit | 7ff951c90b0db3cbd66b9cc2fbb9c58941c953b4 (patch) | |
| tree | d9816133f455ae66691de9b7c977dd99aa87bf59 /src | |
| parent | 0e1e97da9e8937d19b0101dcc1f3a16e3db495b6 (diff) | |
| download | tanetane-7ff951c90b0db3cbd66b9cc2fbb9c58941c953b4.tar.gz tanetane-7ff951c90b0db3cbd66b9cc2fbb9c58941c953b4.tar.bz2 tanetane-7ff951c90b0db3cbd66b9cc2fbb9c58941c953b4.zip | |
Added function to get Direction from one point to another
Diffstat (limited to 'src')
| -rw-r--r-- | src/direction.h | 26 |
1 files changed, 26 insertions, 0 deletions
| diff --git a/src/direction.h b/src/direction.h index e11b1f3..3dd95f9 100644 --- a/src/direction.h +++ b/src/direction.h | |||
| @@ -1,6 +1,7 @@ | |||
| 1 | #ifndef DIRECTION_H_AB66A90E | 1 | #ifndef DIRECTION_H_AB66A90E |
| 2 | #define DIRECTION_H_AB66A90E | 2 | #define DIRECTION_H_AB66A90E |
| 3 | 3 | ||
| 4 | #include <cmath> | ||
| 4 | #include <string> | 5 | #include <string> |
| 5 | #include <stdexcept> | 6 | #include <stdexcept> |
| 6 | #include "vector.h" | 7 | #include "vector.h" |
| @@ -64,4 +65,29 @@ inline Direction oppositeDirection(Direction value) { | |||
| 64 | } | 65 | } |
| 65 | } | 66 | } |
| 66 | 67 | ||
| 68 | inline Direction directionFacingPoint(vec2i point) { | ||
| 69 | double theta = atan2(point.y(), point.x()); | ||
| 70 | theta /= M_PI; | ||
| 71 | |||
| 72 | if (theta < -7.0/8.0) { | ||
| 73 | return Direction::left; | ||
| 74 | } else if (theta < -5.0/8.0) { | ||
| 75 | return Direction::down_left; | ||
| 76 | } else if (theta < -3.0/8.0) { | ||
| 77 | return Direction::down; | ||
| 78 | } else if (theta < -1.0/8.0) { | ||
| 79 | return Direction::down_right; | ||
| 80 | } else if (theta < 1.0/8.0) { | ||
| 81 | return Direction::right; | ||
| 82 | } else if (theta < 3.0/8.0) { | ||
| 83 | return Direction::up_right; | ||
| 84 | } else if (theta < 5.0/8.0) { | ||
| 85 | return Direction::up; | ||
| 86 | } else if (theta < 7.0/8.0) { | ||
| 87 | return Direction::up_left; | ||
| 88 | } else { | ||
| 89 | return Direction::left; | ||
| 90 | } | ||
| 91 | } | ||
| 92 | |||
| 67 | #endif /* end of include guard: DIRECTION_H_AB66A90E */ | 93 | #endif /* end of include guard: DIRECTION_H_AB66A90E */ |