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oot/include/ichain.h
Anghelo Carvajal 2191c8b0a0
Use __builtin_offsetof for non IDO builds (#1140)
* Add offsetof macro

* Change old uses of OFFSETOF with offsetof
2022-02-13 00:05:11 -05:00

58 lines
2.4 KiB
C

#ifndef ICHAIN_H
#define ICHAIN_H
#include "libc/stddef.h"
typedef struct {
u32 cont: 1;
u32 type: 4;
u32 offset: 11;
s32 value: 16;
} InitChainEntry;
typedef enum {
/* 0x0 */ ICHAINTYPE_U8, // sets byte
/* 0x1 */ ICHAINTYPE_S8,
/* 0x2 */ ICHAINTYPE_U16, // sets short
/* 0x3 */ ICHAINTYPE_S16,
/* 0x4 */ ICHAINTYPE_U32, // sets word
/* 0x5 */ ICHAINTYPE_S32,
/* 0x6 */ ICHAINTYPE_F32, // sets float
/* 0x7 */ ICHAINTYPE_F32_DIV1000, // sets float divided by 1000
/* 0x8 */ ICHAINTYPE_VEC3F, // sets Vec3f members
/* 0x9 */ ICHAINTYPE_VEC3F_DIV1000, // sets Vec3f members divided by 1000
/* 0xA */ ICHAINTYPE_VEC3S // sets Vec3s members
} InitChainType;
/**
* ICHAIN macros generate an init chain entry of the following form:
* * (e >> 31) & 0x0001 == Continue Parsing after this entry
* * (e >> 27) & 0x000F == Type
* * (e >> 16) & 0x07FF == Offset from start of instance to write initial value
* * e & 0xFFFF == Initial Value
*
* Arguments:
* * type ----- value from enum `InitChainType`
* * member --- name of member inside `Actor` structure to use as the offset
* * value ---- s16 value to use
* * cont ----- ICHAIN_CONTINUE (or ICHAIN_STOP) to continue (or stop) parsing
*/
#define ICHAIN(type, member, value, cont) \
{ cont, type, offsetof(Actor, member), value }
#define ICHAIN_U8(member, val, cont) ICHAIN(ICHAINTYPE_U8, member, val, cont)
#define ICHAIN_S8(member, val, cont) ICHAIN(ICHAINTYPE_S8, member, val, cont)
#define ICHAIN_U16(member, val, cont) ICHAIN(ICHAINTYPE_U16, member, val, cont)
#define ICHAIN_S16(member, val, cont) ICHAIN(ICHAINTYPE_S16, member, val, cont)
#define ICHAIN_U32(member, val, cont) ICHAIN(ICHAINTYPE_U32, member, val, cont)
#define ICHAIN_S32(member, val, cont) ICHAIN(ICHAINTYPE_S32, member, val, cont)
#define ICHAIN_F32(member, val, cont) ICHAIN(ICHAINTYPE_F32, member, val, cont)
#define ICHAIN_F32_DIV1000(member, val, cont) ICHAIN(ICHAINTYPE_F32_DIV1000, member, val, cont)
#define ICHAIN_VEC3F(member, val, cont) ICHAIN(ICHAINTYPE_VEC3F, member, val, cont)
#define ICHAIN_VEC3F_DIV1000(member, val, cont) ICHAIN(ICHAINTYPE_VEC3F_DIV1000, member, val, cont)
#define ICHAIN_VEC3S(member, val, cont) ICHAIN(ICHAINTYPE_VEC3S, member, val, cont)
#define ICHAIN_CONTINUE 1
#define ICHAIN_STOP 0
#endif