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- /*
- * cbzone_defs.h
- * -- Todd W Mummert, December 1990, CMU
- *
- * This file shouldn't need to be changed.
- */
-
- /* Generally useful information */
- #define PI 3.14159265358
- #define PI2 6.28318530716
-
- /* some tolerances for certain objects */
- #define BMT_TOL 14400 /* tank */
- #define BMC_TOL 6000 /* copter */
- #define BMS_TOL 14400 /* supertank */
-
- /*
- * the following types and attributes are defined
- *
- * The attributes are pretty self explanatory. The important
- * thing to remember is that an object should not be removed
- * if it is STILL_THERE. The components of STILL_THERE are
- * IS_ALIVE, IS_EXPLODING, ERASE, EXERASE. ERASE and EXERASE means
- * the object should be removed, but before reclaiming its space we
- * should check if we need to undraw it. ERASE and EXERASE are
- * typically used when removing an object prematurely, as in the
- * case of a missile run, though ERASE is also used while an
- * object moves from the IS_ALIVE state to IS_EXPLODING.
- */
- #define IS_PYRAMID 0x1
- #define IS_CUBE 0x2
- #define IS_ABLOCK 0x3
- #define IS_TANK 0x4
- #define IS_SUPER 0x8
- #define IS_MISSILE 0x10
- #define IS_COPTER 0x20
- #define IS_LANDER 0x40
- #define IS_SALVO 0x80
- #define IS_PLAYER 0x100
- #define IS_ENEMY 0x3c /* derived */
- #define IS_ANYTHING 0x1ff /* derived */
- #define IS_NOTBLOCK 0x1fc /* derived */
-
- #define LN_PYRAMID 0x0 /* the log base 2 of the above values */
- #define LN_CUBE 0x1 /* we use this number to index into an */
- #define LN_TANK 0x2 /* array in the drawobject stage */
- #define LN_SUPER 0x3
- #define LN_MISSILE 0x4
- #define LN_COPTER 0x5
- #define LN_LANDER 0x6
- #define LN_SALVO 0x7
-
- #define IS_ALIVE 0x1
- #define IS_NEW 0x2
- #define ERASE 0x8
- #define EXERASE 0x10
- #define CAN_SHOOT 0x20
- #define IS_PRESET 0x40
- #define IS_EVADING 0x80
- #define IS_EXPLODING 0x100
- #define BLOCKED_BY_ENEMY 0x200
- #define BLOCKED_BY_BLOCK 0x400
- #define LAST_BLOCKED 0x800
- #define HAS_DC 0x1000
- #define IS_BLOCKED 0x600 /* derived */
- #define STILL_THERE 0x119 /* derived */
- #define START_LIVING 0x3 /* derived */
- #define START_EXPLODING 0x10a /* derived */
-
- #define DIST(a,b) ((a->x-b->x)*(a->x-b->x)+(a->y-b->y)*(a->y-b->y))
- #define frand() ((random() & 0xffff) / 65535.0)
- #define ra(x) (x)*PI/180.0
- #define sign(v,c) ((c)<0.0?-(v):(v))
-