Merge pull request #169 from skylicht-lab/features/add-bullet-physics…

…3-engine

#81 Add physics bullet3

CMakeLists.txt

@@ -144,23 +144,8 @@ if (BUILD_SDL)
 	add_definitions(-DSDL)
 endif()
 
-# skylicht bullet engine
-option(BUILD_BULLET_PHYSIC2_LIB "Build bullet physic 2" ON)
-
-if (BUILD_BULLET_PHYSIC2_LIB)
-	add_definitions(-DUSE_PHYSIC_ENGINE -DUSE_PHYSIC_RAGDOLL -DUSE_PHYSIC_VEHICLE -DUSE_BULLET_PHYSIC_ENGINE)
-
-	# sse on window
-	if (MSVC OR CYGWIN OR MINGW)
-		add_definitions(-DBT_USE_SSE)
-	endif()
-
-	if (MINGW)
-		add_definitions(-DBT_NO_SIMD_OPERATOR_OVERLOADS)
-		set(CMAKE_C_FLAGS " -mssse3 ${CMAKE_C_FLAGS}")
-		set(CMAKE_CXX_FLAGS " -mssse3 ${CMAKE_CXX_FLAGS}")
-	endif()
-endif()
+# bullet engine
+option(BUILD_BULLET_PHYSIC_LIB "Build bullet physic" ON)
 
 # skylicht recast navigation
 option(BUILD_RECAST_NAVIGATION_LIB "Build Recast Navigation" ON)
@@ -276,6 +261,10 @@ if (BUILD_IMGUI)
 subdirs (Projects/Imgui)
 endif()
 
+if (BUILD_BULLET_PHYSIC_LIB)
+subdirs (Projects/Bullet3)
+endif()
+
 # skylicht engine
 subdirs (Projects/Skylicht/System)
 subdirs (Projects/Skylicht/Engine)

Projects/Bullet3/CMakeLists.txt

@@ -0,0 +1,50 @@
+FILE (STRINGS "VERSION" BULLET_VERSION)
+
+set (BULLET_PHYSICS_SOURCE_DIR ${SKYLICHT_ENGINE_SOURCE_DIR}/Projects/Bullet3)
+
+OPTION(BUILD_SHARED_LIBS "Use shared libraries" OFF)
+
+OPTION(USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD "Use btSoftMultiBodyDynamicsWorld" ON)
+
+OPTION(USE_DOUBLE_PRECISION "Use double precision"	OFF)
+
+IF(NOT WIN32)
+	SET(DL ${CMAKE_DL_LIBS})
+	IF(CMAKE_SYSTEM_NAME MATCHES "Linux")
+		MESSAGE("Linux")
+		SET(OSDEF -D_LINUX)
+	ELSE(CMAKE_SYSTEM_NAME MATCHES "Linux")
+		IF(APPLE)
+			MESSAGE("Apple")
+			SET(OSDEF -D_DARWIN)
+		ELSE(APPLE)
+			MESSAGE("BSD?")
+			SET(OSDEF -D_BSD)
+		ENDIF(APPLE)
+	ENDIF(CMAKE_SYSTEM_NAME MATCHES "Linux")
+ENDIF(NOT WIN32)
+
+IF (USE_DOUBLE_PRECISION)
+ADD_DEFINITIONS( -DBT_USE_DOUBLE_PRECISION)
+SET( BULLET_DOUBLE_DEF "-DBT_USE_DOUBLE_PRECISION")
+ENDIF (USE_DOUBLE_PRECISION)
+
+IF (NOT USE_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD)
+ADD_DEFINITIONS(-DSKIP_SOFT_BODY_MULTI_BODY_DYNAMICS_WORLD)
+ENDIF ()
+
+OPTION(BUILD_BULLET3 "Set when you want to build Bullet 3" OFF)
+
+if (CMAKE_SYSTEM_NAME STREQUAL Android)
+SET(BUILD_BULLET3 OFF)
+endif()
+
+if (CMAKE_SYSTEM_NAME STREQUAL Emscripten)
+SET(BUILD_BULLET3 OFF)
+endif()
+
+if (CMAKE_SYSTEM_NAME STREQUAL WindowsStore)
+SET(BUILD_BULLET3 OFF)
+endif()
+
+SUBDIRS(src)

Projects/Bullet3/VERSION

@@ -0,0 +1 @@
+3.25

Projects/Bullet3/src/Bullet3Collision/BroadPhaseCollision/b3BroadphaseCallback.h

@@ -0,0 +1,38 @@
+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2013 Erwin Coumans  http://bulletphysics.org
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef B3_BROADPHASE_CALLBACK_H
+#define B3_BROADPHASE_CALLBACK_H
+
+#include "Bullet3Common/b3Vector3.h"
+struct b3BroadphaseProxy;
+
+struct b3BroadphaseAabbCallback
+{
+	virtual ~b3BroadphaseAabbCallback() {}
+	virtual bool process(const b3BroadphaseProxy* proxy) = 0;
+};
+
+struct b3BroadphaseRayCallback : public b3BroadphaseAabbCallback
+{
+	///added some cached data to accelerate ray-AABB tests
+	b3Vector3 m_rayDirectionInverse;
+	unsigned int m_signs[3];
+	b3Scalar m_lambda_max;
+
+	virtual ~b3BroadphaseRayCallback() {}
+};
+
+#endif  //B3_BROADPHASE_CALLBACK_H