Some math functions...

Defines
#define	PA_Cos(angle)   PA_SIN[((angle) + 128)&511]
	Returns the Cos value for an angle. The value goes from -256 to 256... Watch out though : the angle is not in 360 degrees, but in 512 !
#define	PA_Sin(angle)   PA_SIN[((angle))&511]
	Returns the Sin value for an angle. The value goes from -256 to 256... Watch out though : the angle is not in 360 degrees, but in 256 !
Functions
void	PA_InitRand (void)
	Auto-seeds the Rand function based on the clock !
void	PA_SRand (s32 r)
	Set the random's seed. This is taken from Ham, I have no credit. I just made it a little shorter/faster (maybe)
u32	PA_Rand (void)
	Gives a random number, taken from Ham... This is taken from Ham, I have no credit.
u64	PA_Distance (s32 x1, s32 y1, s32 x2, s32 y2)
	Calculate the distance (squared) between 2 points
u16	PA_AdjustAngle (u16 angle, s16 anglerot, s32 startx, s32 starty, s32 targetx, s32 targety)
	Adjust an angle, for example to calculate in which direction an object shoudl turn
u16	PA_GetAngle (s32 startx, s32 starty, s32 targetx, s32 targety)
	Get the angle, from 0 to 511, formed between the horizontal and the line
Variables
u16	RandomValue

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Detailed Description

Adjust angles, get random values...

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Function Documentation

u16 PA_AdjustAngle (  u16  angle, s16  anglerot, s32  startx, s32  starty, s32  targetx, s32  targety )

Adjust an angle, for example to calculate in which direction an object shoudl turn Parameters: angle  Base angle, from 0 to 511 anglerot  For how much to turn... startx  Initial X position starty  Initial Y position targetx  Target X position targety  Target Y position

inline u32 PA_Distance (  s32  x1, s32  y1, s32  x2, s32  y2 )  [inline]

Calculate the distance (squared) between 2 points Parameters: x1  X coordinate of the fist point y1  Y coordinate of the first point x2  X coordinate of the second point y2  Y coordinate of the second point

inline u16 PA_GetAngle (  s32  startx, s32  starty, s32  targetx, s32  targety )  [inline]

Get the angle, from 0 to 511, formed between the horizontal and the line Parameters: startx  Initial X position starty  Initial Y position targetx  Target X position targety  Target Y position

void PA_SRand (  s32  r  )  [inline]

Set the random's seed. This is taken from Ham, I have no credit. I just made it a little shorter/faster (maybe) Parameters: r  Seed value

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