diff options
Diffstat (limited to 'game/shared/entity/collision.cc')
| -rw-r--r-- | game/shared/entity/collision.cc | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/game/shared/entity/collision.cc b/game/shared/entity/collision.cc deleted file mode 100644 index d2bc0a9..0000000 --- a/game/shared/entity/collision.cc +++ /dev/null @@ -1,173 +0,0 @@ -#include "shared/pch.hh"
-
-#include "shared/entity/collision.hh"
-
-#include "core/math/constexpr.hh"
-
-#include "shared/entity/gravity.hh"
-#include "shared/entity/grounded.hh"
-#include "shared/entity/transform.hh"
-#include "shared/entity/velocity.hh"
-
-#include "shared/world/dimension.hh"
-#include "shared/world/voxel_registry.hh"
-
-#include "shared/coord.hh"
-#include "shared/globals.hh"
-
-static int vgrid_collide(const world::Dimension* dimension, int d, entity::Collision& collision, entity::Transform& transform,
- entity::Velocity& velocity, world::VoxelMaterial& touch_surface)
-{
- const auto move = globals::fixed_frametime * velocity.value[d];
- const auto move_sign = math::sign<int>(move);
-
- const auto& ref_aabb = collision.aabb;
- const auto current_aabb = ref_aabb.push(transform.local);
-
- auto next_aabb = math::AABBf(current_aabb);
- next_aabb.min[d] += move;
- next_aabb.max[d] += move;
-
- local_pos lpos_min;
- lpos_min.x = static_cast<local_pos::value_type>(glm::floor(next_aabb.min.x));
- lpos_min.y = static_cast<local_pos::value_type>(glm::floor(next_aabb.min.y));
- lpos_min.z = static_cast<local_pos::value_type>(glm::floor(next_aabb.min.z));
-
- local_pos lpos_max;
- lpos_max.x = static_cast<local_pos::value_type>(glm::ceil(next_aabb.max.x));
- lpos_max.y = static_cast<local_pos::value_type>(glm::ceil(next_aabb.max.y));
- lpos_max.z = static_cast<local_pos::value_type>(glm::ceil(next_aabb.max.z));
-
- // Other axes
- const int u = (d + 1) % 3;
- const int v = (d + 2) % 3;
-
- local_pos::value_type ddir;
- local_pos::value_type dmin;
- local_pos::value_type dmax;
-
- if(move < 0.0f) {
- ddir = local_pos::value_type(+1);
- dmin = lpos_min[d];
- dmax = lpos_max[d];
- }
- else {
- ddir = local_pos::value_type(-1);
- dmin = lpos_max[d];
- dmax = lpos_min[d];
- }
-
- world::VoxelTouch latch_touch = world::VTOUCH_NONE;
- glm::fvec3 latch_values = glm::fvec3(0.0f, 0.0f, 0.0f);
- world::VoxelMaterial latch_surface = world::VMAT_UNKNOWN;
- math::AABBf latch_vbox;
-
- for(auto i = dmin; i != dmax; i += ddir) {
- for(auto j = lpos_min[u]; j < lpos_max[u]; ++j)
- for(auto k = lpos_min[v]; k < lpos_max[v]; ++k) {
- local_pos lpos;
- lpos[d] = i;
- lpos[u] = j;
- lpos[v] = k;
-
- auto vpos = coord::to_voxel(transform.chunk, lpos);
- auto voxel = dimension->get_voxel(vpos);
-
- if(voxel == nullptr) {
- // Don't collide with something
- // that we assume to be nothing
- continue;
- }
-
- math::AABBf vbox(voxel->get_collision().push(lpos));
-
- if(!next_aabb.intersect(vbox)) {
- // No intersection between the voxel
- // and the entity's collision hull
- continue;
- }
-
- if(voxel->is_touch_type<world::VTOUCH_SOLID>()) {
- // Solid touch type makes a collision
- // response whenever it is encountered
- velocity.value[d] = 0.0f;
- touch_surface = voxel->get_surface_material();
- return move_sign;
- }
-
- // In case of other touch types, they
- // are latched and the last ever touch
- // type is then responded to
- if(voxel->get_touch_type() != world::VTOUCH_NONE) {
- latch_touch = voxel->get_touch_type();
- latch_values = voxel->get_touch_values();
- latch_surface = voxel->get_surface_material();
- latch_vbox = vbox;
- continue;
- }
- }
- }
-
- if(latch_touch != world::VTOUCH_NONE) {
- if(latch_touch == world::VTOUCH_BOUNCE) {
- const auto move_distance = glm::abs(current_aabb.min[d] - next_aabb.min[d]);
- const auto threshold = 2.0f * globals::fixed_frametime;
-
- if(move_distance > threshold) {
- velocity.value[d] *= -latch_values[d];
- }
- else {
- velocity.value[d] = 0.0f;
- }
-
- touch_surface = latch_surface;
-
- return move_sign;
- }
-
- if(latch_touch == world::VTOUCH_SINK) {
- velocity.value[d] *= latch_values[d];
- touch_surface = latch_surface;
- return move_sign;
- }
- }
-
- return 0;
-}
-
-void entity::Collision::fixed_update(world::Dimension* dimension)
-{
- // FIXME: this isn't particularly accurate considering
- // some voxels might be passable and some other voxels
- // might apply some slowing factor; what I might do in the
- // future is to add a specific value to the voxel registry
- // entries that would specify the amount of force we apply
- // to prevent player movement inside a specific voxel, plus
- // we shouldn't treat all voxels as full cubes if we want
- // to support slabs, stairs and non-full liquid voxels in the future
-
- auto group = dimension->entities.group<entity::Collision>(entt::get<entity::Transform, entity::Velocity>);
-
- for(auto [entity, collision, transform, velocity] : group.each()) {
- auto surface = world::VMAT_UNKNOWN;
- auto vertical_move = vgrid_collide(dimension, 1, collision, transform, velocity, surface);
-
- if(dimension->entities.any_of<entity::Gravity>(entity)) {
- if(vertical_move == math::sign<int>(dimension->get_gravity())) {
- dimension->entities.emplace_or_replace<entity::Grounded>(entity, entity::Grounded { surface });
- }
- else {
- dimension->entities.remove<entity::Grounded>(entity);
- }
- }
- else {
- // The entity cannot be grounded because the component
- // setup of said entity should not let it comprehend the
- // concept of resting on the ground (it flies around)
- dimension->entities.remove<entity::Grounded>(entity);
- }
-
- vgrid_collide(dimension, 0, collision, transform, velocity, surface);
- vgrid_collide(dimension, 2, collision, transform, velocity, surface);
- }
-}
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