joshua/beats-sim
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Removed recursion, rewriten in loop

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Joshua Moerman 2013-05-07 20:54:26 +02:00
parent 91ffbf1ee8
commit ad61354acd
1 changed files with 10 additions and 6 deletions
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16
Simulation.h
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@ -94,6 +94,7 @@ struct Simulation {
std::vector<collision_type> collisions_in_update;
Bounds bounds;
math::Vec2 gravity{0.0f, 50.0f};
float collision_timer{0.0};
int total_collisions{0};
@ -111,10 +112,13 @@ struct Simulation {
// move balls
for(auto& b : balls){
b.speed += dt * math::Vec2{0.0f, 50.0f};
b.speed += dt * gravity;
float rest_time = collide(b, lines, dt);
b.position += rest_time*b.speed;
auto rest_time = collide(b, lines, dt);
while(rest_time.second >= 0.0f && rest_time.first){
rest_time = collide(b, lines, rest_time.second, rest_time.first);
}
b.position += rest_time.second*b.speed;
}
// count collisions per second (per half second)
@ -166,7 +170,7 @@ struct Simulation {
}
}
float collide(ball_type& b, std::vector<line_type> const & lines, float dt, line_type const * ignore = nullptr){
std::pair<line_type const *, float> collide(ball_type& b, std::vector<line_type> const & lines, float dt, line_type const * ignore = nullptr){
line_type const * closest_line = nullptr;
math::Vec2 collision{0.0, 0.0};
float closeness = 100.0f;
@ -186,7 +190,7 @@ struct Simulation {
}
if(closest_line == nullptr){
return dt;
return std::make_pair(closest_line, dt);
} else {
++total_collisions;
++collisions;
@ -201,7 +205,7 @@ struct Simulation {
b.speed = 2.0*b1 + b.speed;
}
return collide(b, lines, dt - closeness, closest_line);
return std::make_pair(closest_line, dt - closeness);
}
}
};