diff options
Diffstat (limited to 'src/core/General.h')
| -rw-r--r-- | src/core/General.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/core/General.h b/src/core/General.h index 7c0c9562..8f9aa044 100644 --- a/src/core/General.h +++ b/src/core/General.h @@ -74,6 +74,7 @@ public: return result; } + // Returns an angle such that x2/y2 looks at x1/y1 with its forward vector if rotated by that angle static float GetRadianAngleBetweenPoints(float x1, float y1, float x2, float y2) { float x = x2 - x1; @@ -95,9 +96,26 @@ public: } } + // should return direction in 0-8 range. fits perfectly to peds' path directions. + static int CGeneral::GetNodeHeadingFromVector(float x, float y) + { + float angle = CGeneral::GetRadianAngleBetweenPoints(x, y, 0.0f, 0.0f); + if (angle < 0.0f) + angle += TWOPI; + + angle = DEGTORAD(22.5f) + TWOPI - angle; + + if (angle >= TWOPI) + angle -= TWOPI; + + return (int)floorf(angle / DEGTORAD(45.0f)); + } + // not too sure about all these... static uint16 GetRandomNumber(void) { return myrand() & MYRAND_MAX; } + static bool GetRandomTrueFalse(void) + { return GetRandomNumber() < MYRAND_MAX / 2; } // Probably don't want to ever reach high static float GetRandomNumberInRange(float low, float high) { return low + (high - low)*(GetRandomNumber()/float(MYRAND_MAX + 1)); } |