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create contacts but skip solve based on wall direction

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jacob 2025-05-28 03:33:29 -05:00
parent 8aa9f1402b
commit 6926bdfa5a
2 changed files with 16 additions and 17 deletions
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30
src/phys.c
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@ -95,22 +95,8 @@ void phys_create_and_update_contacts(struct phys_step_ctx *ctx, f32 elapsed_dt,
CT_ASSERT(ARRAY_COUNT(constraint_ent->contact_constraint_data.points) == 2); CT_ASSERT(ARRAY_COUNT(constraint_ent->contact_constraint_data.points) == 2);
CT_ASSERT(ARRAY_COUNT(collider_res.points) == 2); CT_ASSERT(ARRAY_COUNT(collider_res.points) == 2);
b32 create_constraint = collider_res.num_points > 0;
if (create_constraint) {
struct v2 normal = collider_res.normal;
struct v2 dir0 = e0->collision_dir;
struct v2 dir1 = e1->collision_dir;
f32 threshold = 0.5;
if (create_constraint && !v2_is_zero(dir0)) {
create_constraint = v2_dot(dir0, normal) > threshold;
}
if (create_constraint && !v2_is_zero(dir1)) {
create_constraint = v2_dot(dir1, v2_neg(normal)) > threshold;
}
}
struct phys_contact_constraint *constraint = NULL; struct phys_contact_constraint *constraint = NULL;
if (create_constraint) { if (collider_res.num_points > 0) {
b32 is_start = false; b32 is_start = false;
if (!constraint_ent->valid) { if (!constraint_ent->valid) {
is_start = true; is_start = true;
@ -182,6 +168,20 @@ void phys_create_and_update_contacts(struct phys_step_ctx *ctx, f32 elapsed_dt,
#endif #endif
} }
/* Skip solve based on collision direction */
{
struct v2 normal = collider_res.normal;
struct v2 dir0 = e0->collision_dir;
struct v2 dir1 = e1->collision_dir;
f32 threshold = 0.5;
if (!v2_is_zero(dir0) && !constraint->skip_solve) {
constraint->skip_solve = v2_dot(dir0, normal) <= threshold;
}
if (!v2_is_zero(dir1) && !constraint->skip_solve) {
constraint->skip_solve = v2_dot(dir1, v2_neg(normal)) <= threshold;
}
}
/* Run collision callback */ /* Run collision callback */
if (collision_callback) { if (collision_callback) {
struct phys_collision_data data = ZI; struct phys_collision_data data = ZI;

3
src/user.c
View File

@ -1428,18 +1428,17 @@ INTERNAL void user_update(void)
{ {
f32 radius = 5; f32 radius = 5;
for (u32 i = 0; i < data->num_points; ++i) { for (u32 i = 0; i < data->num_points; ++i) {
u32 color = data->skip_solve ? ALPHA_F(COLOR_YELLOW, 0.3) : RGBA_F(0.8, 0.2, 0.2, 1);
struct phys_contact_point point = data->points[i]; struct phys_contact_point point = data->points[i];
struct v2 dbg_pt = point.dbg_pt; struct v2 dbg_pt = point.dbg_pt;
/* Draw point */ /* Draw point */
{ {
u32 color = ALPHA_F(COLOR_YELLOW, 0.50);
draw_circle(G.user_gpu_cmd_store, xform_mul_v2(G.world_to_user_xf, dbg_pt), radius, color, 10); draw_circle(G.user_gpu_cmd_store, xform_mul_v2(G.world_to_user_xf, dbg_pt), radius, color, 10);
} }
/* Draw normal */ /* Draw normal */
{ {
u32 color = COLOR_WHITE;
f32 len = 0.1f; f32 len = 0.1f;
f32 arrow_thickness = 2; f32 arrow_thickness = 2;
f32 arrow_height = 5; f32 arrow_height = 5;