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Physics improvements

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This commit is contained in:
Daniel Bross
2025-03-29 00:18:27 +01:00
parent b6b1371af5
commit 7428ee7fed
3 changed files with 53 additions and 22 deletions
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11
core/mesh_entity.jai
View File

@@ -9,6 +9,9 @@ Mesh_Entity :: struct {
init_entity :: (e: *Mesh_Entity) {
if e.model_path.count > 0 {
load_model_into_entity(e, get_or_load_model(e.model_path));
e.flags |= .COLLISION | .STATIC;
e.collider.type = .MESH;
e.collider.bake_mode = .FULL_MESH;
}
}
@@ -19,8 +22,8 @@ Mesh_Entity_Info :: struct {
}
mesh_entity_visitor :: (info : *File_Visit_Info, files: *[..] Mesh_Entity_Info) {
if info.is_directory
return;
if info.is_directory return;
path, basename, ext := path_decomp (info.full_name);
// Entity text files
@@ -35,8 +38,4 @@ find_all_mesh_entities :: () {
path := "../assets/models/level_design/";
visit_files(path, true, *mesh_entity_files, mesh_entity_visitor);
for mesh_entity_files {
print(it.full_path);
}
}

58
physics/physics.jai
View File

@@ -43,9 +43,19 @@ Collision_Layers :: enum_flags {
ALL :: .LAYER1 | LAYER2 | .LAYER3 | .LAYER4 | .LAYER5 | .LAYER6 | .LAYER7 | .LAYER8 | .LAYER9 | .LAYER10;
}
Collider_Bake_Mode :: enum {
AABB;
FULL_MESH;
ONLY_FACING_UP;
}
Collider :: struct {
type : Collider_Type;
bake_mode: Collider_Bake_Mode;
layer: Collision_Layers = .LAYER1;
collides_with_layers: Collision_Layers = .LAYER1;
@@ -78,19 +88,43 @@ Physics_Body :: struct {
}
update_mesh_collider :: (e: *Entity) {
if e.collider.mesh.vertices.count == 0 {
array_resize(*e.collider.mesh.vertices, 8);
}
if e.collider.bake_mode == {
case .AABB; {
if e.collider.mesh.vertices.count == 0 {
array_resize(*e.collider.mesh.vertices, 8);
}
m := e.transform.model_matrix;
e.collider.mesh.vertices[0] = transform_position(e.collider.aabb.min, m);
e.collider.mesh.vertices[1] = transform_position(e.collider.aabb.max, m);
e.collider.mesh.vertices[2] = transform_position(.{e.collider.aabb.min.x, e.collider.aabb.min.y, e.collider.aabb.max.z}, m);
e.collider.mesh.vertices[3] = transform_position(.{e.collider.aabb.max.x, e.collider.aabb.min.y, e.collider.aabb.max.z}, m);
e.collider.mesh.vertices[4] = transform_position(.{e.collider.aabb.max.x, e.collider.aabb.min.y, e.collider.aabb.min.z}, m);
e.collider.mesh.vertices[5] = transform_position(.{e.collider.aabb.min.x, e.collider.aabb.max.y, e.collider.aabb.max.z}, m);
e.collider.mesh.vertices[6] = transform_position(.{e.collider.aabb.max.x, e.collider.aabb.max.y, e.collider.aabb.min.z}, m);
e.collider.mesh.vertices[7] = transform_position(.{e.collider.aabb.min.x, e.collider.aabb.max.y, e.collider.aabb.min.z}, m);
m := e.transform.model_matrix;
e.collider.mesh.vertices[0] = transform_position(e.collider.aabb.min, m);
e.collider.mesh.vertices[1] = transform_position(e.collider.aabb.max, m);
e.collider.mesh.vertices[2] = transform_position(.{e.collider.aabb.min.x, e.collider.aabb.min.y, e.collider.aabb.max.z}, m);
e.collider.mesh.vertices[3] = transform_position(.{e.collider.aabb.max.x, e.collider.aabb.min.y, e.collider.aabb.max.z}, m);
e.collider.mesh.vertices[4] = transform_position(.{e.collider.aabb.max.x, e.collider.aabb.min.y, e.collider.aabb.min.z}, m);
e.collider.mesh.vertices[5] = transform_position(.{e.collider.aabb.min.x, e.collider.aabb.max.y, e.collider.aabb.max.z}, m);
e.collider.mesh.vertices[6] = transform_position(.{e.collider.aabb.max.x, e.collider.aabb.max.y, e.collider.aabb.min.z}, m);
e.collider.mesh.vertices[7] = transform_position(.{e.collider.aabb.min.x, e.collider.aabb.max.y, e.collider.aabb.min.z}, m);
}
case .FULL_MESH; {
//update_entity_transform(e);
model := get_model_by_handle(e.renderable.model);
if model {
for i: 0..e.renderable.num_nodes-1 {
render_node := e.renderable.nodes[i];
model_node := model.nodes[i];
for mesh_handle: model_node.meshes {
mesh := parray_get(*engine.renderer.meshes, mesh_handle);
for p: mesh.positions {
position := transform_position(p, render_node.transform.world_matrix);
array_add(*e.collider.mesh.vertices, position);
}
}
}
}
}
}
e.collider.mesh.is_baked = true;
}

6
renderer/model.jai
View File

@@ -384,9 +384,7 @@ parse_fbx_node :: (model: *Model, fbx_node: *ufbx_node) {
// }
//}
array_add(*node.meshes, parray_add(*engine.renderer.meshes, mesh));struct {
path: string;
}
array_add(*node.meshes, parray_add(*engine.renderer.meshes, mesh));
array_add(*node.material_defaults, model.materials[mesh_mat.material.typed_id]); // @Incomplete
}
}
@@ -673,7 +671,7 @@ load_fbx :: (path: string) -> Model_Handle, bool {
get_or_load_model :: (path: string) -> Model_Handle {
for * engine.renderer.model_lib {
if it.path == path {
return xx (it_index + 1);
return cast(Model_Handle)(it_index + 1);
}
}