api.h

// SPDX-FileCopyrightText: 2023 Erin Catto
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include <stdint.h>
 
#ifdef __cplusplus
#define BOX2D_CPP extern "C"
#else
#define BOX2D_CPP
#endif
 
#if defined(_WIN32) && defined(BOX2D_BUILD_DLL)
// Building Box2D as a DLL
#define BOX2D_API BOX2D_CPP __declspec(dllexport)
#elif defined(_WIN32) && defined(BOX2D_DLL)
// Using Box2D as a DLL
#define BOX2D_API BOX2D_CPP __declspec(dllimport)
#elif defined(__GNUC__) && defined(BOX2D_BUILD_DLL)
// Building Box2D as a shared library
#define BOX2D_API BOX2D_CPP __attribute__((visibility("default")))
#else
#define BOX2D_API BOX2D_CPP
#endif
 
typedef void* b2AllocFcn(uint32_t size, int32_t alignment);
 
typedef void b2FreeFcn(void* mem);
 
BOX2D_API void b2SetAllocator(b2AllocFcn* allocFcn, b2FreeFcn* freeFcn);
 
BOX2D_API uint32_t b2GetByteCount(void);
 
typedef int b2AssertFcn(const char* condition, const char* fileName, int lineNumber);
 
BOX2D_API void b2SetAssertFcn(b2AssertFcn* assertFcn);