mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-20 17:26:01 +08:00
278 lines
8.9 KiB
C
278 lines
8.9 KiB
C
/******************************************************************************
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* Spine Runtimes License Agreement
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* Last updated April 5, 2025. Replaces all prior versions.
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*
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* Copyright (c) 2013-2025, Esoteric Software LLC
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*
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* Integration of the Spine Runtimes into software or otherwise creating
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* derivative works of the Spine Runtimes is permitted under the terms and
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* conditions of Section 2 of the Spine Editor License Agreement:
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* http://esotericsoftware.com/spine-editor-license
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*
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* Otherwise, it is permitted to integrate the Spine Runtimes into software
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* or otherwise create derivative works of the Spine Runtimes (collectively,
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* "Products"), provided that each user of the Products must obtain their own
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* Spine Editor license and redistribution of the Products in any form must
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* include this license and copyright notice.
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*
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* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
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* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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/*
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Implementation notes:
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- An OOP style is used where each "class" is made up of a struct and a number of functions prefixed with the struct name.
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- struct fields that are const are readonly. Either they are set in a create function and can never be changed, or they can only
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be changed by calling a function.
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- Inheritance is done using a struct field named "super" as the first field, allowing the struct to be cast to its "super class".
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This works because a pointer to a struct is guaranteed to be a pointer to the first struct field.
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- Classes intended for inheritance provide init/deinit functions which subclasses must call in their create/dispose functions.
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- Polymorphism is done by a base class providing function pointers in its init function. The public API delegates to these
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function pointers.
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- Subclasses do not provide a dispose function, instead the base class' dispose function should be used, which will delegate to
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a dispose function pointer.
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- Classes not designed for inheritance cannot be extended because they may use an internal subclass to hide private data and don't
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expose function pointers.
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- The public API hides implementation details, such as init/deinit functions. An internal API is exposed by extension.h to allow
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classes to be extended. Internal functions begin with underscore (_).
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- OOP in C tends to lose type safety. Macros for casting are provided in extension.h to give context for why a cast is being done.
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*/
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#ifndef SPINE_EXTENSION_H_
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#define SPINE_EXTENSION_H_
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#include <spine/dll.h>
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/* Required for sprintf and consorts on MSVC */
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#ifdef _MSC_VER
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#pragma warning(disable:4996)
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#endif
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/* All allocation uses these. */
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#define MALLOC(TYPE, COUNT) ((TYPE*)_spMalloc(sizeof(TYPE) * (COUNT), __FILE__, __LINE__))
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#define CALLOC(TYPE, COUNT) ((TYPE*)_spCalloc(COUNT, sizeof(TYPE), __FILE__, __LINE__))
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#define REALLOC(PTR, TYPE, COUNT) ((TYPE*)_spRealloc(PTR, sizeof(TYPE) * (COUNT)))
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#define NEW(TYPE) CALLOC(TYPE,1)
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/* Gets the direct super class. Type safe. */
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#define SUPER(VALUE) (&VALUE->super)
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/* Cast to a super class. Not type safe, use with care. Prefer SUPER() where possible. */
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#define SUPER_CAST(TYPE, VALUE) ((TYPE*)VALUE)
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/* Cast to a sub class. Not type safe, use with care. */
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#define SUB_CAST(TYPE, VALUE) ((TYPE*)VALUE)
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/* Gets the vtable for the specified type. Not type safe, use with care. */
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#define VTABLE(TYPE, VALUE) ((_##TYPE##Vtable*)((TYPE*)VALUE)->vtable)
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/* Frees memory. Can be used on const types. */
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#define FREE(VALUE) _spFree((void*)VALUE)
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/* Allocates a new char[], assigns it to TO, and copies FROM to it. Can be used on const types. */
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#define MALLOC_STR(TO, FROM) strcpy(TO = (char*)MALLOC(char, strlen(FROM) + 1), FROM)
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#define PI 3.1415926535897932385f
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#define PI2 (PI * 2)
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#define INV_PI2 (1 / PI2)
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#define DEG_RAD (PI / 180)
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#define RAD_DEG (180 / PI)
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#define ABS(A) ((A) < 0? -(A): (A))
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#define SIGNUM(A) ((A) < 0? -1.0f: (A) > 0 ? 1.0f : 0.0f)
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#define CEIL(a) ((float)ceil(a))
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#ifdef __STDC_VERSION__
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#define FMOD(A,B) fmodf(A, B)
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#define ATAN2(A,B) atan2f(A, B)
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#define SIN(A) sinf(A)
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#define COS(A) cosf(A)
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#define SQRT(A) sqrtf(A)
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#define ACOS(A) acosf(A)
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#define POW(A,B) pow(A, B)
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#define ISNAN(A) (int)isnan(A)
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#else
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#define FMOD(A, B) (float)fmod(A, B)
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#define ATAN2(A, B) (float)atan2(A, B)
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#define COS(A) (float)cos(A)
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#define SIN(A) (float)sin(A)
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#define SQRT(A) (float)sqrt(A)
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#define ACOS(A) (float)acos(A)
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#define POW(A, B) (float)pow(A, B)
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#define ISNAN(A) (int)isnan(A)
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#endif
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#define SIN_DEG(A) SIN((A) * DEG_RAD)
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#define COS_DEG(A) COS((A) * DEG_RAD)
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#define CLAMP(x, min, max) ((x) < (min) ? (min) : ((x) > (max) ? (max) : (x)))
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#ifndef MIN
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#define MIN(x, y) ((x) < (y) ? (x) : (y))
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#endif
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#ifndef MAX
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#define MAX(x, y) ((x) > (y) ? (x) : (y))
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#endif
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#define ATAN2DEG(A, B) ((float)ATAN2(A, B) * RAD_DEG)
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#define UNUSED(x) (void)(x)
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <spine/Skeleton.h>
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#include <spine/Animation.h>
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#include <spine/Atlas.h>
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#include <spine/AttachmentLoader.h>
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#include <spine/VertexAttachment.h>
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#include <spine/RegionAttachment.h>
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#include <spine/MeshAttachment.h>
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#include <spine/BoundingBoxAttachment.h>
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#include <spine/ClippingAttachment.h>
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#include <spine/PathAttachment.h>
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#include <spine/PointAttachment.h>
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#include <spine/AnimationState.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Functions that must be implemented:
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*/
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void _spAtlasPage_createTexture(spAtlasPage *self, const char *path);
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void _spAtlasPage_disposeTexture(spAtlasPage *self);
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char *_spUtil_readFile(const char *path, int *length);
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/*
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* Internal API available for extension:
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*/
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void *_spMalloc(size_t size, const char *file, int line);
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void *_spCalloc(size_t num, size_t size, const char *file, int line);
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void *_spRealloc(void *ptr, size_t size);
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void _spFree(void *ptr);
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float _spRandom(void);
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SP_API void _spSetMalloc(void *(*_malloc)(size_t size));
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SP_API void _spSetDebugMalloc(void *(*_malloc)(size_t size, const char *file, int line));
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SP_API void _spSetRealloc(void *(*_realloc)(void *ptr, size_t size));
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SP_API void _spSetFree(void (*_free)(void *ptr));
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SP_API void _spSetRandom(float (*_random)(void));
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char *_spReadFile(const char *path, int *length);
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/*
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* Math utilities
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*/
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float _spMath_random(float min, float max);
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float _spMath_randomTriangular(float min, float max);
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float _spMath_randomTriangularWith(float min, float max, float mode);
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float _spMath_interpolate(float (*apply)(float a), float start, float end, float a);
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float _spMath_pow2_apply(float a);
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float _spMath_pow2out_apply(float a);
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/**/
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typedef union _spEventQueueItem {
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int type;
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spTrackEntry *entry;
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spEvent *event;
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} _spEventQueueItem;
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typedef struct _spAnimationState _spAnimationState;
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typedef struct _spEventQueue {
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_spAnimationState *state;
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_spEventQueueItem *objects;
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int objectsCount;
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int objectsCapacity;
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int /*boolean*/ drainDisabled;
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} _spEventQueue;
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struct _spAnimationState {
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spAnimationState super;
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int eventsCount;
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spEvent **events;
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_spEventQueue *queue;
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spPropertyId *propertyIDs;
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int propertyIDsCount;
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int propertyIDsCapacity;
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int /*boolean*/ animationsChanged;
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};
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/**/
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/* configureAttachment and disposeAttachment may be 0. */
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void _spAttachmentLoader_init(spAttachmentLoader *self,
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void (*dispose)(spAttachmentLoader *self),
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spAttachment *(*createAttachment)(spAttachmentLoader *self, spSkin *skin,
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spAttachmentType type, const char *name,
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const char *path, spSequence *sequence),
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void (*configureAttachment)(spAttachmentLoader *self, spAttachment *),
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void (*disposeAttachment)(spAttachmentLoader *self, spAttachment *)
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);
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void _spAttachmentLoader_deinit(spAttachmentLoader *self);
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/* Can only be called from createAttachment. */
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void _spAttachmentLoader_setError(spAttachmentLoader *self, const char *error1, const char *error2);
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void _spAttachmentLoader_setUnknownTypeError(spAttachmentLoader *self, spAttachmentType type);
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/**/
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void _spAttachment_init(spAttachment *self, const char *name, spAttachmentType type,
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void (*dispose)(spAttachment *self), spAttachment *(*copy)(spAttachment *self));
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void _spAttachment_deinit(spAttachment *self);
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void _spVertexAttachment_init(spVertexAttachment *self);
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void _spVertexAttachment_deinit(spVertexAttachment *self);
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#ifdef __cplusplus
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}
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#endif
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#endif /* SPINE_EXTENSION_H_ */
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