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applying velocity of ground the worst way possible

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MihailRis 2026-03-03 22:18:20 +03:00
parent 7f09c47ffb
commit 38354c42f9
8 changed files with 72 additions and 37 deletions
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26
src/physics/PhysicsSolver.cpp
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@ -208,7 +208,7 @@ static bool calc_collision_neg_y(
if (pos.y < newy && glm::abs(pos.y - newy) < 0.5f) {
pos.y = newy;
}
groundVelocty = box->velocity;
groundVelocty = (box->position - box->prevPosition) / box->delta;
if (vel.y < 0.0f) {
vel.y = 0.0f;
return true;
@ -362,8 +362,14 @@ void PhysicsSolver::calcSubstep(
glm::vec3& vel,
glm::vec3& pos,
bool prevGrounded,
float dt
float dt,
int substeps
) {
if (hitbox.grounded) {
pos.x += hitbox.groundVelocity.x * dt * substeps;
pos.z += hitbox.groundVelocity.z * dt * substeps;
}
auto initpos = pos;
auto half = hitbox.getHalfSize();
float gravityScale = hitbox.gravityScale;
@ -434,6 +440,10 @@ void PhysicsSolver::step(
uint substeps,
entityid_t entity
) {
hitbox.prevPosition = hitbox.position;
hitbox.substeps = substeps;
hitbox.delta = delta;
float dt = delta / static_cast<float>(substeps);
float linearDamping = hitbox.linearDamping * hitbox.friction;
@ -443,12 +453,7 @@ void PhysicsSolver::step(
bool prevGrounded = hitbox.grounded;
hitbox.grounded = false;
for (uint i = 0; i < substeps; i++) {
calcSubstep(chunks, hitbox, vel, pos, prevGrounded, dt);
}
if (prevGrounded && !hitbox.grounded) {
vel += hitbox.groundVelocity;
hitbox.groundVelocity = {};
calcSubstep(chunks, hitbox, vel, pos, prevGrounded, dt, substeps);
}
vel.x /= 1.0f + delta * linearDamping;
@ -456,6 +461,11 @@ void PhysicsSolver::step(
if (hitbox.verticalDamping > 0.0f) {
vel.y /= 1.0f + delta * linearDamping * hitbox.verticalDamping;
}
if (prevGrounded && !hitbox.grounded) {
auto appliedVelocity = hitbox.groundVelocity;
vel += appliedVelocity;
hitbox.groundVelocity = {};
}
AABB aabb;
aabb.a = pos - hitbox.getHalfSize();