2021-10-26 22:22:54 +00:00
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#define DEMO_NPC_MOVE_SPEED 500
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#define DEMO_NPC_STEER_SPEED 300
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void DemoNPCMoveAround(ecs_iter_t *it) {
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Velocity *v = ecs_column(it, Velocity, 1);
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for (int i = 0; i < it->count; i++) {
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float d = zpl_quake_rsqrt(v[i].x*v[i].x + v[i].y*v[i].y);
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v[i].x += (v[i].x*d*DEMO_NPC_MOVE_SPEED*it->delta_time + zpl_cos(zpl_to_radians(rand()%360))*DEMO_NPC_STEER_SPEED*it->delta_time);
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v[i].y += (v[i].y*d*DEMO_NPC_MOVE_SPEED*it->delta_time + zpl_sin(zpl_to_radians(rand()%360))*DEMO_NPC_STEER_SPEED*it->delta_time);
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}
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}
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