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 | |
u32 | PA_Rand (void) |
Gives a random number, taken from Ham... This is taken from Ham, I have no credit. | |
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_RandMax (u32 max) |
Gives a random number, between 0 and the given number (included). | |
u32 | PA_RandMinMax (u32 min, u32 max) |
Gives a random number, between the 2 given numbers (included). | |
u64 | PA_Distance (s32 x1, s32 y1, s32 x2, s32 y2) |
u64 | PA_TrueDistance (s32 x1, s32 y1, s32 x2, s32 y2) |
Calculate the real distance between 2 points. Much slower than PA_Distance. | |
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 | |
u32 | RandomValue |
#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 !
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.
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 |
u64 PA_Distance | ( | s32 | x1, | |
s32 | y1, | |||
s32 | x2, | |||
s32 | y2 | |||
) | [inline] |
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.
startx | Initial X position | |
starty | Initial Y position | |
targetx | Target X position | |
targety | Target Y position |
inline void PA_InitRand | ( | void | ) | [inline] |
Auto-seeds the Rand function based on the clock !
inline u32 PA_Rand | ( | void | ) | [inline] |
Gives a random number, taken from Ham... This is taken from Ham, I have no credit.
inline u32 PA_RandMax | ( | u32 | max | ) | [inline] |
Gives a random number, between 0 and the given number (included).
max | Maximum included value |
inline u32 PA_RandMinMax | ( | u32 | min, | |
u32 | max | |||
) | [inline] |
Gives a random number, between the 2 given numbers (included).
min | Minimum included value | |
max | Maximum included value |
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).
r | Seed value |
inline u32 PA_TrueDistance | ( | s32 | x1, | |
s32 | y1, | |||
s32 | x2, | |||
s32 | y2 | |||
) | [inline] |
Calculate the real distance between 2 points. Much slower than PA_Distance.
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 |
u32 RandomValue |