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quakeforge/libs/scene/transform.c

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[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
/*
transform.c
General transform handling
Copyright (C) 2021 Bill Currke
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
[scene] Move transform getters into inline functions
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#define IMPLEMENT_TRANSFORM_Funcs
[scene] Rename libQFentity to libQFscene And start working on scene management.
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#include "QF/scene/hierarchy.h"
[scene] Make transforms owned by the scene This actually has at least two benefits: the transform id is managed by the scene and thus does not need separate management by the Ruamoko wrapper functions, and better memory handling of the transform objects. Another benefit that isn't realized yet is that this is a step towards breaking the renderers free of quake and quakeworld: although the clients don't actually use the scene yet, it will be a good place to store the rendering information (functions to run, etc).
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#include "QF/scene/scene.h"
[scene] Rename libQFentity to libQFscene And start working on scene management.
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#include "QF/scene/transform.h"
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
[scene] Make transforms owned by the scene This actually has at least two benefits: the transform id is managed by the scene and thus does not need separate management by the Ruamoko wrapper functions, and better memory handling of the transform objects. Another benefit that isn't realized yet is that this is a step towards breaking the renderers free of quake and quakeworld: although the clients don't actually use the scene yet, it will be a good place to store the rendering information (functions to run, etc).
2022-02-14 11:01:36 +00:00
#include "scn_internal.h"
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
transform_t *
[scene] Implement Hierarchy_Copy It copies an entire hierarchy (minus actual entities, but I'm as yet unsure how to proceed with them), even across scenes as the source scene is irrelevant and the destination scene is used for creating the new transforms.
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__transform_alloc (scene_t *scene)
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
{
[scene] Make transforms owned by the scene This actually has at least two benefits: the transform id is managed by the scene and thus does not need separate management by the Ruamoko wrapper functions, and better memory handling of the transform objects. Another benefit that isn't realized yet is that this is a step towards breaking the renderers free of quake and quakeworld: although the clients don't actually use the scene yet, it will be a good place to store the rendering information (functions to run, etc).
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scene_resources_t *res = scene->resources;
transform_t *transform = PR_RESNEW_NC (res->transforms);
transform->scene = scene;
transform->id = PR_RESINDEX (res->transforms, transform);
[scene] Implement Hierarchy_Copy It copies an entire hierarchy (minus actual entities, but I'm as yet unsure how to proceed with them), even across scenes as the source scene is irrelevant and the destination scene is used for creating the new transforms.
2022-05-08 02:14:00 +00:00
transform->hierarchy = 0;
transform->index = 0;
return transform;
}
transform_t *
Transform_New (scene_t *scene, transform_t *parent)
{
transform_t *transform = __transform_alloc (scene);
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
if (parent) {
transform->hierarchy = parent->hierarchy;
transform->index = Hierarchy_InsertHierarchy (parent->hierarchy, 0,
parent->index, 0);
} else {
[scene] Use scene resources for the main hierarchy block This will reduce the memory churn when creating hierarchies as transforms switch between being root and child.
2022-03-02 01:46:29 +00:00
transform->hierarchy = Hierarchy_New (scene, 1);
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
transform->index = 0;
}
transform->hierarchy->transform.a[transform->index] = transform;
Hierarchy_UpdateMatrices (transform->hierarchy);
return transform;
}
void
Transform_Delete (transform_t *transform)
{
if (transform->index != 0) {
// The transform is not the root, so pull it out of its current
// hierarchy so deleting it is easier
Transform_SetParent (transform, 0);
}
[scene] Use scene resources for the main hierarchy block This will reduce the memory churn when creating hierarchies as transforms switch between being root and child.
2022-03-02 01:46:29 +00:00
// Takes care of freeing the transforms
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
Hierarchy_Delete (transform->hierarchy);
}
transform_t *
[scene] Make transforms owned by the scene This actually has at least two benefits: the transform id is managed by the scene and thus does not need separate management by the Ruamoko wrapper functions, and better memory handling of the transform objects. Another benefit that isn't realized yet is that this is a step towards breaking the renderers free of quake and quakeworld: although the clients don't actually use the scene yet, it will be a good place to store the rendering information (functions to run, etc).
2022-02-14 11:01:36 +00:00
Transform_NewNamed (scene_t *scene, transform_t *parent, const char *name)
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
{
[scene] Make transforms owned by the scene This actually has at least two benefits: the transform id is managed by the scene and thus does not need separate management by the Ruamoko wrapper functions, and better memory handling of the transform objects. Another benefit that isn't realized yet is that this is a step towards breaking the renderers free of quake and quakeworld: although the clients don't actually use the scene yet, it will be a good place to store the rendering information (functions to run, etc).
2022-02-14 11:01:36 +00:00
transform_t *transform = Transform_New (scene, parent);
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
Transform_SetName (transform, name);
return transform;
}
void
Transform_SetParent (transform_t *transform, transform_t *parent)
{
if (parent) {
hierarchy_t *hierarchy = transform->hierarchy;
uint32_t index = transform->index;
Hierarchy_InsertHierarchy (parent->hierarchy, hierarchy,
parent->index, index);
Hierarchy_RemoveHierarchy (hierarchy, index);
if (!hierarchy->name.size) {
Hierarchy_Delete (hierarchy);
}
} else {
// null parent -> make transform root
if (!transform->index) {
// already root
return;
}
hierarchy_t *hierarchy = transform->hierarchy;
uint32_t index = transform->index;
[scene] Use scene resources for the main hierarchy block This will reduce the memory churn when creating hierarchies as transforms switch between being root and child.
2022-03-02 01:46:29 +00:00
hierarchy_t *new_hierarchy = Hierarchy_New (transform->scene, 0);
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
Hierarchy_InsertHierarchy (new_hierarchy, hierarchy, null_transform,
index);
Hierarchy_RemoveHierarchy (hierarchy, index);
}
}
void
Transform_SetName (transform_t *transform, const char *name)
{
hierarchy_t *h = transform->hierarchy;
//FIXME create a string pool (similar to qfcc's, or even move that to util)
if (h->name.a[transform->index]) {
free (h->name.a[transform->index]);
}
h->name.a[transform->index] = strdup (name);
}
void
Transform_SetTag (transform_t *transform, uint32_t tag)
{
hierarchy_t *h = transform->hierarchy;
h->tag.a[transform->index] = tag;
}
void
Transform_SetLocalPosition (transform_t *transform, vec4f_t position)
{
hierarchy_t *h = transform->hierarchy;
h->localMatrix.a[transform->index][3] = position;
h->modified.a[transform->index] = 1;
Hierarchy_UpdateMatrices (h);
}
void
Transform_SetLocalRotation (transform_t *transform, vec4f_t rotation)
{
hierarchy_t *h = transform->hierarchy;
vec4f_t scale = h->localScale.a[transform->index];
mat4f_t mat;
mat4fquat (mat, rotation);
[entity] Update local rotation and scale caches When setting local rotation/scale/transform, need to cache the rotation and scale, otherwise they can't be fetched easily later on (position is easy as it's just the fourth column of the matrix).
2021-07-24 02:31:00 +00:00
h->localRotation.a[transform->index] = rotation;
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
h->localMatrix.a[transform->index][0] = mat[0] * scale[0];
h->localMatrix.a[transform->index][1] = mat[1] * scale[1];
h->localMatrix.a[transform->index][2] = mat[2] * scale[2];
h->modified.a[transform->index] = 1;
Hierarchy_UpdateMatrices (h);
}
void
Transform_SetLocalScale (transform_t *transform, vec4f_t scale)
{
hierarchy_t *h = transform->hierarchy;
vec4f_t rotation = h->localRotation.a[transform->index];
mat4f_t mat;
mat4fquat (mat, rotation);
[entity] Update local rotation and scale caches When setting local rotation/scale/transform, need to cache the rotation and scale, otherwise they can't be fetched easily later on (position is easy as it's just the fourth column of the matrix).
2021-07-24 02:31:00 +00:00
h->localScale.a[transform->index] = scale;
[entity] Start work on a new entity library The plan is to have a fully component based entity system. This adds hierarchical transforms. Not particularly useful for quake itself at this stage, but it will allow for much more flexibility later on, especially when QuakeForge becomes more general-purpose.
2021-03-09 02:39:41 +00:00
h->localMatrix.a[transform->index][0] = mat[0] * scale[0];
h->localMatrix.a[transform->index][1] = mat[1] * scale[1];
h->localMatrix.a[transform->index][2] = mat[2] * scale[2];
h->modified.a[transform->index] = 1;
Hierarchy_UpdateMatrices (h);
}
void
Transform_SetWorldPosition (transform_t *transform, vec4f_t position)
{
if (transform->index) {
hierarchy_t *h = transform->hierarchy;
uint32_t parent = h->parentIndex.a[transform->index];
position = mvmulf (h->worldInverse.a[parent], position);
}
Transform_SetLocalPosition (transform, position);
}
void
Transform_SetWorldRotation (transform_t *transform, vec4f_t rotation)
{
if (transform->index) {
hierarchy_t *h = transform->hierarchy;
uint32_t parent = h->parentIndex.a[transform->index];
rotation = qmulf (qconjf (h->worldRotation.a[parent]), rotation);
}
Transform_SetLocalRotation (transform, rotation);
}
[renderer] Clean up entity_t to a certain extent This is the first step towards component-based entities. There's still some transform-related stuff in the struct that needs to be moved, but it's all entirely client related (rather than renderer) and will probably go into a "client" component. Also, the current components are directly included structs rather than references as I didn't want to deal with the object management at this stage. As part of the process (because transforms use simd) this also starts the process of moving QF to using simd for vectors and matrices. There's now a mess of simd and sisd code mixed together, but it works surprisingly well together.
2021-03-09 14:52:40 +00:00
void
Transform_SetLocalTransform (transform_t *transform, vec4f_t scale,
vec4f_t rotation, vec4f_t position)
{
hierarchy_t *h = transform->hierarchy;
mat4f_t mat;
mat4fquat (mat, rotation);
position[3] = 1;
[entity] Update local rotation and scale caches When setting local rotation/scale/transform, need to cache the rotation and scale, otherwise they can't be fetched easily later on (position is easy as it's just the fourth column of the matrix).
2021-07-24 02:31:00 +00:00
h->localRotation.a[transform->index] = rotation;
h->localScale.a[transform->index] = scale;
[renderer] Clean up entity_t to a certain extent This is the first step towards component-based entities. There's still some transform-related stuff in the struct that needs to be moved, but it's all entirely client related (rather than renderer) and will probably go into a "client" component. Also, the current components are directly included structs rather than references as I didn't want to deal with the object management at this stage. As part of the process (because transforms use simd) this also starts the process of moving QF to using simd for vectors and matrices. There's now a mess of simd and sisd code mixed together, but it works surprisingly well together.
2021-03-09 14:52:40 +00:00
h->localMatrix.a[transform->index][0] = mat[0] * scale[0];
h->localMatrix.a[transform->index][1] = mat[1] * scale[1];
h->localMatrix.a[transform->index][2] = mat[2] * scale[2];
h->localMatrix.a[transform->index][3] = position;
h->modified.a[transform->index] = 1;
Hierarchy_UpdateMatrices (h);
}
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