我有以下课程：
typedef class object_struct
{
public:
u16 graph_node_type; /* 0x00 */
u16 graph_flags;
struct object_struct *prev; /* previous linked list object */
struct object_struct *next; /* next linked list object */
u32 graph_parent;
u32 graph_child; /* 0x10 */
u32 geo_layout_ptr; /* 0x14 */
u32 _0x18;
u32 _0x1c;
float _0x20; /* 0x20 */
float _0x24;
float _0x28;
float x_scaling; /* 0x2c */
float y_scaling; /* 0x30 */
float z_scaling;
u16 _0x38;
u16 _0x3a;
u32 animation; /* 0x3c - current animation */
u16 anim_current_frame; /* 0x40 */
u16 anim_timer; /* timer, animation related? */
u16 anim_current_frame_copy;
u16 _0x46;
u32 _0x48;
u32 _0x4c;
u32 matrix_ptr; /* 0x50 */
float float_0x54;
float float_0x58;
float float_0x5c;
struct object_struct *next_object_ptr; /* 0x60: re-check this */
u32 _0x64;
struct object_struct *next_object_ptr2; /* 0x68: re-check this (child_obj) */
u32 _0x6c;
u32 _0x70; /* 0x70 */
u16 active; /* 0x0000 = inactive, 0x0101 = active */
u16 _0x76; /* collision flag according to YE */
struct object_struct *collided_obj_ptr; /* according to YE, pointer to object collided with */
u32 _0x7c;
u32 _0x80; /* 0x80 */
u32 _0x84;
u32 _0x88;
u32 obj_flags;
u32 _0x90; /* 0x90 */
u32 _0x94;
u32 _0x98;
u32 _0x9c;
float x_pos; /* 0xa0 */
float y_pos;
float z_pos;
float x_speed; /* x increment? */
float y_speed; /* 0xb0 */
float z_speed; /* z_increment? */
float speed;
u32 _0xbc;
u32 _0xc0; /* 0xc0 */
u32 x_rotation; /* 0xc4 - rotation triplet */
u32 y_rotation; /* 0xc8 */
u32 z_rotation;
u32 x_rotation2; /* rotation copy (collision?) 0xd0 */
u32 y_rotation2; /* 0xd4 */
u32 z_rotation2;
u32 _0xd8;
u32 _0xe0; /* 0xe0 */
float _0xe4; /* gravity related? y_speed - 0xe4 ? */
u32 _0xe8;
u32 _0xec;
u32 _0xf0; /* 0xf0 */
u32 _0xf4; /* obj type for some behaviors (ie, ice bully), for AMPS, radius of rotation */
u32 _0xf8;
u32 _0xfc;
u32 _0x100; /* 0x100 */
u32 _0x104;
u32 _0x108;
u32 _0x10c;
u32 _0x110; /* 0x110 */
u32 _0x114;
u32 _0x118;
u32 _0x11c;
u32 animation_ptr; /* 0x120 = (set by 0x27 26 behavior command) entry for animation? */
u32 _0x124; /* in some behaviors, action related? */
float _0x128;
float _0x12c;
u32 interaction; /* 0x130
00 = Something Solid. Can't grab. Mario walks around, Can jump over.
01 = Crashed when jumping at it, Used by Hoot.
02 = Grabbing
04 = Going through door
08 = Knocks mario back and dissappears. No damage.
10 = Something Solid, Can't grab, Mario walks around, Can't jump over, Seems somewhat thin..
40 = Climbing
*/
u32 _0x134;
u32 _0x138;
u32 _0x13c;
u32 _0x140; /* 0x140 */
u32 behav_param; /* behav param */
u32 _0x148;
u32 action;
u32 _0x150; /* 0x150 = also reset when action changes */
u32 timer; /* always incremented. When action changes, it's set to 0 */
float _0x158;
float distance_from_mario;
u32 _0x160; /* 0x160 */
float _0x164_x;
float _0x168_y;
float _0x16c_z;
float _0x170; /* 0x170 */
float _0x174;
u32 _0x178;
u32 transparency;
u32 damage_to_mario; /* According to YE, "How many segments of damage to do to Mario for objects that cause him harm" */
u32 health; /* Health (ie, for King bob-omb and whomp */
u32 behav_param2; /* re-check */
u32 previous_action; /* used to reset the 0x154 timer */
u32 _0x190; /* 0x190 */
float collision_distance; /* NOTE: if collision_distance < disappear_distance then disappear_distance = collision_distance */
u32 _0x198;
float drawing_distance;
u32 _0x1a0; /* 0x1a0 */
u32 _0x1a4;
u32 _0x1a8;
u32 _0x1ac;
u32 _0x1b0; /* 0x1b0 */
u32 _0x1b4;
u32 _0x1b8;
u32 _0x1bc;
u32 _0x1c0; /* 0x1c0 */
u32 _0x1c4;
u32 _0x1c8;
u32 script_ptr;
u32 stack_index; /* 0x1d0 */
u32 stack;
u32 _0x1d8;
u32 _0x1dc;
u32 _0x1e0; /* 0x1e0 */
u32 _0x1e4;
u32 _0x1e8;
u32 _0x1ec;
u32 _0x1f0; /* 0x1f0 */
u16 _0x1f4;
u16 _0x1f6;
float col_sphere_x;
float col_sphere_y;
float _0x200; /* 0x200 */
float _0x204;
float _0x208;
u32 behavior_script_entry;
u32 _0x210; /* 0x210 */
u32 collide_obj_ptr; /* pointer to another object (collision happening)?.
Can be used to detect if Mario is on top of the object by comparing
value with Mario's pointer */
u32 collision_ptr; /* set by behavior script (0x2A command) */
u32 _0x21c;
u32 _0x220; /* 0x220 */
u32 _0x224;
u32 _0x228;
u32 _0x22c;
u32 _0x230; /* 0x230 */
u32 _0x234;
u32 _0x238;
u32 _0x23c;
u32 _0x240; /* 0x240 */
u32 _0x244;
u32 _0x248;
u32 _0x24c;
u32 _0x250; /* 0x250 */
u32 _0x254;
u32 _0x258;
u32 behav_param_copy_ptr;
} Object;
现在我的问题是，我想使用它的类指针指向包含这些成员的地址。
例：
#define M64_CURR_OBJ_PTR 0x80361160
Object **Obj = (void*)M64_CURR_OBJ_PTR;
(*Obj)->animation = 0x25; // changes animation to 0x25
现在，在我的示例中，它现在应该位于地址0x8033B1AC并将u32 = unsigned int更改为0x25。但是带有void的上述部分对我来说不起作用和错误。知道我怎么能做到这一点吗？
答案 0 :(得分：3)
我认为您想要使用的是reinterpret_cast：
Object **Obj = reinterpret_cast<Object**>(M64_CURR_OBJ_PTR);
转换为(void*)代替您可以在C中执行，但不能在C ++中执行。在C ++中，您必须更加明确。 void指针不会自动转换为另一种指针类型。
答案 1 :(得分：2)
我建议你这样做
static_assert(sizeof(Object)==0x25c);
验证编译器是否正确打包结构。当您混合使用不同大小的整数（uint16_t，uint32_t等）时，编译器可能会决定在此处插入填充字节。如果static_assert没有抱怨，那么你很高兴。否则，您将不得不查看各种非标准编译器#pragma，以便无间隙地打包结构。
此外，typedef class object_struct { ...} Object是旧学校C.将其更改为更简单的class Object{ }。