From 2675036ce9413d0f1796f6fc338f4012c70c8a5a Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Fri, 25 Feb 2022 22:26:58 +1000
Subject: [PATCH] Attempt to decompile setupLoadBriefing

---
 src/game/game_00c490.c         | 87 +++++++++++++++++++++++++++++++++-
 src/game/mainmenu.c            |  2 +-
 src/include/constants.h        |  1 +
 src/include/game/game_00c490.h |  2 +-
 4 files changed, 88 insertions(+), 4 deletions(-)

diff --git a/src/game/game_00c490.c b/src/game/game_00c490.c
index 14e23fee5..bf48f295e 100644
--- a/src/game/game_00c490.c
+++ b/src/game/game_00c490.c
@@ -2664,7 +2664,7 @@ void setupHov(struct defaultobj *obj, struct hov *hov)
 
 #if VERSION >= VERSION_PAL_FINAL
 GLOBAL_ASM(
-glabel func0f00e980
+glabel setupLoadBriefing
 /*  f00e980:	27bdffc8 */ 	addiu	$sp,$sp,-56
 /*  f00e984:	afb5002c */ 	sw	$s5,0x2c($sp)
 /*  f00e988:	afb30024 */ 	sw	$s3,0x24($sp)
@@ -2799,7 +2799,7 @@ glabel func0f00e980
 );
 #else
 GLOBAL_ASM(
-glabel func0f00e980
+glabel setupLoadBriefing
 /*  f00e980:	27bdffc8 */ 	addiu	$sp,$sp,-56
 /*  f00e984:	afb5002c */ 	sw	$s5,0x2c($sp)
 /*  f00e988:	afb30024 */ 	sw	$s3,0x24($sp)
@@ -2934,6 +2934,89 @@ glabel func0f00e980
 );
 #endif
 
+// Mismatch: for loop is handled differently, as is obj->type
+//void setupLoadBriefing(s32 stagenum, u8 *buffer, s32 bufferlen, struct briefing *briefing)
+//{
+//	if (stagenum < STAGE_TITLE) {
+//		s32 stageindex = stageGetIndex(stagenum);
+//		struct defaultobj *obj;
+//		s32 setupfilenum;
+//		s32 setupfilesize;
+//		struct objective *objective;
+//		struct briefingobj *briefingobj;
+//		s32 i;
+//		u8 *langbuffer;
+//		s32 langbufferlen;
+//		struct stagesetup *setup;
+//
+//		if (stageindex < 0) {
+//			stageindex = 0;
+//		}
+//
+//		setupfilenum = g_Stages[stageindex].setupfileid;
+//		g_LoadType = LOADTYPE_LANG;
+//
+//		if (g_Stages[stageindex].setupfileid);
+//
+//		func0f167200(setupfilenum, 0x22, buffer, bufferlen);
+//
+//		setup = (struct stagesetup *)buffer;
+//		setupfilesize = fileGetSize(setupfilenum);
+//		langbuffer = &buffer[setupfilesize];
+//		langbufferlen = bufferlen - setupfilesize;
+//
+//		briefing->langbank = langGetLangBankIndexFromStagenum(stagenum);
+//
+//		langSetBank(briefing->langbank, langbuffer, langbufferlen);
+//
+//		obj = (struct defaultobj *)((u32)setup + (u32)setup->props);
+//
+//		if (obj != NULL) {
+//			s32 wanttype = BRIEFINGTYPE_TEXT_PA;
+//
+//			if (lvGetDifficulty() == DIFF_A) {
+//				wanttype = BRIEFINGTYPE_TEXT_A;
+//			}
+//
+//			if (lvGetDifficulty() == DIFF_SA) {
+//				wanttype = BRIEFINGTYPE_TEXT_SA;
+//			}
+//
+//			for (i = 0; i < 6; i++) {
+//				briefing->objectivenames[i] = 0;
+//			}
+//
+//			briefing->briefingtextnum = L_MISC_042; // "No briefing for this mission"
+//
+//			while (obj->type != OBJTYPE_END) {
+//				switch (obj->type) {
+//				case OBJTYPE_BRIEFING:
+//					briefingobj = (struct briefingobj *)obj;
+//
+//					if (briefingobj->type == BRIEFINGTYPE_TEXT_PA) {
+//						briefing->briefingtextnum = briefingobj->text;
+//					}
+//
+//					if (briefingobj->type == wanttype) {
+//						briefing->briefingtextnum = briefingobj->text;
+//					}
+//					break;
+//				case OBJTYPE_BEGINOBJECTIVE:
+//					objective = (struct objective *)obj;
+//
+//					if (objective->index < 7U) {
+//						briefing->objectivenames[objective->index] = objective->text;
+//						briefing->objectivedifficulties[objective->index] = objective->difficulties;
+//					}
+//					break;
+//				}
+//
+//				obj = (struct defaultobj *)((u32 *)obj + setupGetCommandLength((u32 *)obj));
+//			}
+//		}
+//	}
+//}
+
 void setupLoadFiles(s32 stagenum)
 {
 	s32 i;
diff --git a/src/game/mainmenu.c b/src/game/mainmenu.c
index a6fd51de3..769656b61 100644
--- a/src/game/mainmenu.c
+++ b/src/game/mainmenu.c
@@ -800,7 +800,7 @@ s32 menudialog00103608(s32 operation, struct menudialogdef *dialogdef, union han
 	case MENUOP_OPEN:
 		g_Menus[g_MpPlayerNum].unk840.unk010 = 0;
 
-		func0f00e980(g_MissionConfig.stagenum,
+		setupLoadBriefing(g_MissionConfig.stagenum,
 				g_Menus[g_MpPlayerNum].unk840.unk004,
 				g_Menus[g_MpPlayerNum].unk840.unk008, &g_Briefing);
 		break;
diff --git a/src/include/constants.h b/src/include/constants.h
index 9c8977d06..b13dc95bc 100644
--- a/src/include/constants.h
+++ b/src/include/constants.h
@@ -1337,6 +1337,7 @@
 #define LOADTYPE_NONE  0
 #define LOADTYPE_BG    1
 #define LOADTYPE_TILES 2
+#define LOADTYPE_LANG  3
 #define LOADTYPE_SETUP 4
 #define LOADTYPE_PADS  5
 #define LOADTYPE_MODEL 6
diff --git a/src/include/game/game_00c490.h b/src/include/game/game_00c490.h
index 2a63d150a..479b06e03 100644
--- a/src/include/game/game_00c490.h
+++ b/src/include/game/game_00c490.h
@@ -27,7 +27,7 @@ s32 func0f00e1f8(s32 padnum);
 s32 func0f00e2b0(s32 padnum);
 void setupDoor(struct doorobj *door, s32 cmdindex);
 void setupHov(struct defaultobj *obj, struct hov *hov);
-void func0f00e980(s32 stagenum, u8 *arg0, s32 arg1, struct briefing *briefing);
+void setupLoadBriefing(s32 stagenum, u8 *buffer, s32 bufferlen, struct briefing *briefing);
 void setupLoadFiles(s32 stagenum);
 void setupParseObjects(s32 stagenum);