65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
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#ifndef __PHYSICS_H__
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#define __PHYSICS_H__
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// x = pounds to convert to newtons
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#define CALC_CONV_LB2NEWTON(x) ((x)*4.44822162)
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// x = ounces to convert to newtons
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#define CALC_CONV_OZ2NEWTON(x) (((x)*4.44822162)/16)
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// x = kilograms to convert to newtons
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#define CALC_CONV_KG2NEWTON(x) ((x)*9.81)
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// x = milligrams to convert to newtons
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#define CALC_CONV_MG2NEWTON(x) (((x)*9.81)/1000
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// W = weight in newtons, g = constant acceleration of gravity
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#define CALC_MASSFROMWEIGHT(W, g) ((W)/(g))
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// F = Force applied to object, a = acceleration of object
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#define CALC_MASSFROMFORCE(F, a) ((F)/(a))
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// v = linear velocity of object, r = radius of circular path
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#define CALC_ACCEL_CENTRIPETAL(v, r) (((v)*(v))/(r))
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// v1 = starting velocity, v2 = ending velocity, t = time elapsed between v1 and v2
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#define CALC_ACCEL_VELOCITYDELTA(v1, v2, t) (((v2)-(v1)) / (t))
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// F = force applied to object, m = mass of object
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#define CALC_ACCEL_FORCE(F, m) ((F)/(m))
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// d = distance object has traveled, t = time object has spent in motion
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#define CALC_VELOCITY_AVG(d, t) ((d)/(t))
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// W = Weight of object, H = Height of object above the ground plane
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#define CALC_ENERGY_POTENTIAL(W, H) ((W)*(H))
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// m = mass of object, v = velocity of object
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#define CALC_ENERGY_KINETIC(m, v) (((m)*(v))/2)
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#define PHYSICS_NOPHYSICS 0000000000000000b
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#define PHYSICS_FRICTIONLESS 0000000000000001b
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#define PHYSICS_NOGRAVITY 0000000000000010b
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#define PHYSICS_MATERIAL_LIQUID 0000000000000100b
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#define PHYSICS_MATERIAL_GAS 0000000000001000b
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#define PHYSICS_MATERIAL_SOLID 0000000000010000b
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struct WorldPhysics
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{
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float gravity;
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float airfriction;
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}
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struct StaticPhysics
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{
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float friction;
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float bouyancy;
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int flags;
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}
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struct ObjectPhysics : public StaticPhysics
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{
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float mass;
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float weight;
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float p1; // position 1, used for calculating velocity
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float p2; // position 2, "" " " "
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float v1; // velocity 1, used for calculation acceleration
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float v2; // velocity 2, " " " "
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float pe; // potential energy of an object at rest
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float ke; // kinetic energy of a moving object
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}
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#endif
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