diff options
Diffstat (limited to '2d/softbody/softbody_1/snippet2.cpp')
-rw-r--r-- | 2d/softbody/softbody_1/snippet2.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/2d/softbody/softbody_1/snippet2.cpp b/2d/softbody/softbody_1/snippet2.cpp new file mode 100644 index 0000000..0e8523e --- /dev/null +++ b/2d/softbody/softbody_1/snippet2.cpp @@ -0,0 +1,16 @@ + +struct Spring { + float mass = 1.f; // Mass of the weight on the end of the spring + float k = 4; // Spring Constant, in N / m + float c = 1; // Viscous damping constant, in N / m/s + float force = 0.f; + float velocity = 0.f; + float position = 0.f; +}; + +void updateSpring(Spring* spring, float dtSeconds) { + spring->force = spring->c * spring->velocity + spring->k * spring->position; + float acceleration = spring->force / spring->mass; // F = ma + spring->velocity = spring->velocity + acceleration * dtSeconds; + spring->position = spring->position + spring->velocity * dtSeconds; +} |