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Linux Cubed Series 8: LINUX Games
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fly8111-.000
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olow.c
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C/C++ Source or Header
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1979-12-31
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2KB
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93 lines
/* --------------------------------- olow.c --------------------------------- */
/* This is part of the flight simulator 'fly8'.
* Author: Eyal Lebedinsky (eyal@ise.canberra.edu.au).
*/
/* Object description: ground at close range.
*/
#include "fly.h"
/* This is a small, simple x-y reference grid that follows the plane and
* only shows when it is very low.
*/
static SHAPE shape_low = {
0,
0,
0,
1L, /* weight */
0 /* drag */
};
#define GUNIT 100
#define HORIZON (1000L*VONE)
LOCAL_FUNC int FAR
init_low (BODY *b)
{
int i, last, g, h;
VERTEX *p, *vx_low;
i = (int)(HORIZON/VONE/GUNIT);
last = 2*i+1;
if (!(vx_low = (VERTEX *)memory_calloc (sizeof (*vx_low), 4*last+1)))
return (1);
shape_low.v = vx_low;
shape_low.flags |= SH_DYNVERTEX;
h = GUNIT*i;
for (g = -h, p = vx_low, i = 0; i < last; ++i, g += GUNIT) {
p->V[X] = g; p->V[Y] = -h; p->V[Z] = 0;
p->flags = V_MOVE; ++p;
p->V[X] = g; p->V[Y] = h; p->V[Z] = 0;
p->flags = V_DRAW; ++p;
p->V[X] = -h; p->V[Y] = g; p->V[Z] = 0;
p->flags = V_MOVE; ++p;
p->V[X] = h; p->V[Y] = g; p->V[Z] = 0;
p->flags = V_DRAW; ++p;
}
p->flags = 0;
return (0);
}
LOCAL_FUNC int FAR
create_low (OBJECT *p)
{
p->color = CC_LRED;
p->time = FOREVER;
Mident (p->T);
return (0);
}
LOCAL_FUNC void FAR
dynamics_low (OBJECT *p, int interval)
{
p->R[X] = (((CV->R[X]/VONE+GUNIT/2)/GUNIT)*GUNIT)*VONE;
p->R[Y] = (((CV->R[Y]/VONE+GUNIT/2)/GUNIT)*GUNIT)*VONE;
}
#undef GUNIT
#undef HORIZON
BODY FAR BoLow = {
0,
0,
"LOWLAND",
&shape_low,
init_low,
gen_term,
create_low,
gen_delete,
dynamics_low,
gen_hit
};