mirror of
https://github.com/OpenDriver2/REDRIVER2.git
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83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
#ifndef DR2MATH_H
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#define DR2MATH_H
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#include "ABS.H"
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// Driver 2 math definitions
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#define ONE 4096
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#define ONE_BITS 12
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#define PH_ONE 256
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#define PH_ONE_BITS 8
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// math constants
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#if 0
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// DO NOT USE IT unless you don't care about replays and chases
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#define FIXED(a) (int(a) / ONE)
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#define HFIXED(a) (int(a) / (ONE*2))
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#define PH_FIXED(a) (int(a) / (PH_ONE))
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#else
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#define FixHalfRound(x, bits) (((x) + (1 << (bits-1))) >> bits)
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#define FixFloorSigned(x, bits) ((x) / (1 << bits)) // in disassembly: ((int(x) < 0 ? int(x) + (1 << bits)-1 : int(x)) >> bits)
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#define FIXEDH(a) FixHalfRound(a, ONE_BITS) // Fixed Half Round number
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#define FIXED(a) ((a) >> ONE_BITS) // Fixed number (unsigned)
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#endif
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#define SetVec(_v, _x, _y, _z) \
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{ \
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(_v)->vx = _x; \
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(_v)->vy = _y; \
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(_v)->vz = _z; \
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}
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#define VecAdd(vecOut, vecLeft, vecRight) \
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{ \
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(vecOut)->vx = (vecLeft)->vx + (vecRight)->vx; \
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(vecOut)->vy = (vecLeft)->vy + (vecRight)->vy; \
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(vecOut)->vz = (vecLeft)->vz + (vecRight)->vz; \
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}
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#define VecSubtract(vecOut, vecLeft, vecRight) \
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{ \
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(vecOut)->vx = (vecLeft)->vx - (vecRight)->vx; \
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(vecOut)->vy = (vecLeft)->vy - (vecRight)->vy; \
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(vecOut)->vz = (vecLeft)->vz - (vecRight)->vz; \
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}
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#define VecAddEq(vecLeft, vecRight) \
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{ \
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(vecLeft)->vx += (vecRight)->vz; \
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(vecLeft)->vy += (vecRight)->vy; \
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(vecLeft)->vz += (vecRight)->vz; \
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}
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#define VecSubtractEq(vecLeft, vecRight) \
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{ \
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(vecLeft)->vx -= (vecRight)->vx; \
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(vecLeft)->vy -= (vecRight)->vy; \
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(vecLeft)->vz -= (vecRight)->vz; \
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}
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#define VecDivEq(vecLeft, vecRight) \
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{ \
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(vecLeft)->vx /= (vecRight)->vz; \
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(vecLeft)->vy /= (vecRight)->vy; \
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(vecLeft)->vz /= (vecRight)->vz; \
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}
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#define VecMulEq(vecLeft, vecRight) \
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{ \
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(vecLeft)->vx *= (vecRight)->vx; \
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(vecLeft)->vy *= (vecRight)->vy; \
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(vecLeft)->vz *= (vecRight)->vz; \
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}
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#define numberOf(sexToys) (sizeof(sexToys) / sizeof(sexToys[0]))
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#endif // DR2MATH_H
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