From ce040a5d9c7649586b48835e187dfd69ce328173 Mon Sep 17 00:00:00 2001
From: Ryan Dwyer <ryandwyer1@gmail.com>
Date: Wed, 10 Feb 2021 22:04:40 +1000
Subject: [PATCH] Decompile shardsTick

---
 src/game/core.c                     |   6 +-
 src/game/data/data_0258c0.c         |   2 +-
 src/game/game_013550.c              |  18 +--
 src/game/game_015420.c              |   6 +-
 src/game/game_01de30.c              | 192 ++++++----------------------
 src/game/game_150820.c              |  48 +++----
 src/gvars/gvars.c                   |   4 +-
 src/include/game/data/data_020df0.h |   2 +-
 src/include/game/game_013550.h      |   2 +-
 src/include/game/game_015420.h      |   2 +-
 src/include/game/game_01de30.h      |   2 +-
 src/include/gvars/gvars.h           |   4 +-
 src/include/types.h                 |  20 +--
 13 files changed, 92 insertions(+), 216 deletions(-)

diff --git a/src/game/core.c b/src/game/core.c
index 41ea425b9..614e1ecab 100644
--- a/src/game/core.c
+++ b/src/game/core.c
@@ -393,7 +393,7 @@ void coreLoadStage(s32 stagenum)
 	func0f0147d0();
 	func0f0147f8();
 	stub0f013540();
-	func0f0139f0();
+	shardsInit();
 	frUnloadData();
 
 	if (g_Vars.stagenum == STAGE_TITLE) {
@@ -2179,7 +2179,7 @@ void coreTick(void)
 		func0f01d8c0();
 		func0f01d990();
 		casingsTick();
-		func0f01de30();
+		shardsTick();
 		sparksTick();
 		func0f13eb44();
 		func0f149864();
@@ -2267,7 +2267,7 @@ void coreUnloadStage(void)
 	smokeReset();
 	stub0f015400();
 	stub0f015410();
-	func0f015420();
+	shardsReset();
 	stub0f0153f0();
 	alarmReset();
 	func0f015010(); // props/setup related
diff --git a/src/game/data/data_0258c0.c b/src/game/data/data_0258c0.c
index 7526d8dbf..2ee90dc58 100644
--- a/src/game/data/data_0258c0.c
+++ b/src/game/data/data_0258c0.c
@@ -2157,7 +2157,7 @@ u32 var8007fa74 = 0x3f800000;
 u32 var8007fa78 = 0x3f800000;
 u32 var8007fa7c = 0x00000000;
 u32 var8007fa80 = 0x00000000;
-u32 var8007fa84 = 0x00000000;
+bool g_ShardsActive = false;
 u32 var8007fa88 = 0x00000000;
 u32 var8007fa8c = 0x00000000;
 u8 g_InGameSubtitles = 1;
diff --git a/src/game/game_013550.c b/src/game/game_013550.c
index 7931d0292..0d73ad81a 100644
--- a/src/game/game_013550.c
+++ b/src/game/game_013550.c
@@ -127,27 +127,27 @@ void func0f013550(void)
 	}
 }
 
-void func0f0139f0(void)
+void shardsInit(void)
 {
 	s32 i;
 
-	var800a45c0 = 200 / PLAYERCOUNT();
+	g_MaxShards = 200 / PLAYERCOUNT();
 
 	if (IS4MB()) {
-		var800a45c0 = var800a45c0 / 2;
+		g_MaxShards = g_MaxShards / 2;
 	}
 
 	if (g_Vars.stagenum >= STAGE_TITLE) {
-		var800a45c0 = 0;
+		g_MaxShards = 0;
 	}
 
-	if (var800a45c0 == 0) {
-		var800a45c4 = 0;
+	if (g_MaxShards == 0) {
+		g_Shards = NULL;
 	} else {
-		var800a45c4 = malloc(var800a45c0 * sizeof(struct var800a45c4) + 0xf & ~0xf, MEMPOOL_STAGE);
+		g_Shards = malloc(g_MaxShards * sizeof(struct shard) + 0xf & ~0xf, MEMPOOL_STAGE);
 
-		for (i = 0; i < var800a45c0; i++) {
-			var800a45c4[i].unk04 = 0;
+		for (i = 0; i < g_MaxShards; i++) {
+			g_Shards[i].age60 = 0;
 		}
 	}
 
diff --git a/src/game/game_015420.c b/src/game/game_015420.c
index 709539984..8fd759975 100644
--- a/src/game/game_015420.c
+++ b/src/game/game_015420.c
@@ -10,11 +10,11 @@
 #include "gvars/gvars.h"
 #include "types.h"
 
-void func0f015420(void)
+void shardsReset(void)
 {
 	s32 i;
 
-	for (i = 0; i < var800a45c0; i++) {
-		var800a45c4[i].unk04 = 0;
+	for (i = 0; i < g_MaxShards; i++) {
+		g_Shards[i].age60 = 0;
 	}
 }
diff --git a/src/game/game_01de30.c b/src/game/game_01de30.c
index f2ddb044e..c81b260cd 100644
--- a/src/game/game_01de30.c
+++ b/src/game/game_01de30.c
@@ -10,158 +10,42 @@
 #include "gvars/gvars.h"
 #include "types.h"
 
-const u32 var7f1a8670[] = {0x46ea6000};
-const u32 var7f1a8674[] = {0xc6ea6000};
-const u32 var7f1a8678[] = {0x3dcccccd};
-const u32 var7f1a867c[] = {0x00000000};
+void shardsTick(void)
+{
+	f32 lvupdate;
+	s32 i;
+	s32 j;
 
-GLOBAL_ASM(
-glabel func0f01de30
-/*  f01de30:	3c088008 */ 	lui	$t0,%hi(var8007fa84)
-/*  f01de34:	2508fa84 */ 	addiu	$t0,$t0,%lo(var8007fa84)
-/*  f01de38:	8d0e0000 */ 	lw	$t6,0x0($t0)
-/*  f01de3c:	3c09800a */ 	lui	$t1,%hi(var800a45c0)
-/*  f01de40:	252945c0 */ 	addiu	$t1,$t1,%lo(var800a45c0)
-/*  f01de44:	11c0007d */ 	beqz	$t6,.L0f01e03c
-/*  f01de48:	3c02800a */ 	lui	$v0,%hi(g_Vars+0x38)
-/*  f01de4c:	8c429ff8 */ 	lw	$v0,%lo(g_Vars+0x38)($v0)
-/*  f01de50:	00001825 */ 	or	$v1,$zero,$zero
-/*  f01de54:	240b0001 */ 	addiu	$t3,$zero,0x1
-/*  f01de58:	2841000f */ 	slti	$at,$v0,0xf
-/*  f01de5c:	10200004 */ 	beqz	$at,.L0f01de70
-/*  f01de60:	3c0a800a */ 	lui	$t2,%hi(var800a45c4)
-/*  f01de64:	44822000 */ 	mtc1	$v0,$f4
-/*  f01de68:	10000004 */ 	b	.L0f01de7c
-/*  f01de6c:	46802020 */ 	cvt.s.w	$f0,$f4
-.L0f01de70:
-/*  f01de70:	3c014170 */ 	lui	$at,0x4170
-/*  f01de74:	44810000 */ 	mtc1	$at,$f0
-/*  f01de78:	00000000 */ 	nop
-.L0f01de7c:
-/*  f01de7c:	8d2f0000 */ 	lw	$t7,0x0($t1)
-/*  f01de80:	00001025 */ 	or	$v0,$zero,$zero
-/*  f01de84:	3c017f1b */ 	lui	$at,%hi(var7f1a8670)
-/*  f01de88:	19e0006c */ 	blez	$t7,.L0f01e03c
-/*  f01de8c:	254a45c4 */ 	addiu	$t2,$t2,%lo(var800a45c4)
-/*  f01de90:	c4308670 */ 	lwc1	$f16,%lo(var7f1a8670)($at)
-/*  f01de94:	3c017f1b */ 	lui	$at,%hi(var7f1a8674)
-/*  f01de98:	c42e8674 */ 	lwc1	$f14,%lo(var7f1a8674)($at)
-/*  f01de9c:	3c017f1b */ 	lui	$at,%hi(var7f1a8678)
-/*  f01dea0:	c42c8678 */ 	lwc1	$f12,%lo(var7f1a8678)($at)
-/*  f01dea4:	8d580000 */ 	lw	$t8,0x0($t2)
-.L0f01dea8:
-/*  f01dea8:	03032021 */ 	addu	$a0,$t8,$v1
-/*  f01deac:	8c850004 */ 	lw	$a1,0x4($a0)
-/*  f01deb0:	58a0005d */ 	blezl	$a1,.L0f01e028
-/*  f01deb4:	8d2c0000 */ 	lw	$t4,0x0($t1)
-/*  f01deb8:	4600018d */ 	trunc.w.s	$f6,$f0
-/*  f01debc:	00003825 */ 	or	$a3,$zero,$zero
-/*  f01dec0:	44063000 */ 	mfc1	$a2,$f6
-/*  f01dec4:	00000000 */ 	nop
-/*  f01dec8:	00a66021 */ 	addu	$t4,$a1,$a2
-/*  f01decc:	ac8c0004 */ 	sw	$t4,0x4($a0)
-/*  f01ded0:	8d4d0000 */ 	lw	$t5,0x0($t2)
-/*  f01ded4:	01a32021 */ 	addu	$a0,$t5,$v1
-/*  f01ded8:	c48a002c */ 	lwc1	$f10,0x2c($a0)
-/*  f01dedc:	c4880014 */ 	lwc1	$f8,0x14($a0)
-/*  f01dee0:	46005482 */ 	mul.s	$f18,$f10,$f0
-/*  f01dee4:	46124100 */ 	add.s	$f4,$f8,$f18
-/*  f01dee8:	e4840014 */ 	swc1	$f4,0x14($a0)
-/*  f01deec:	8d4e0000 */ 	lw	$t6,0x0($t2)
-/*  f01def0:	01c32021 */ 	addu	$a0,$t6,$v1
-/*  f01def4:	c48a0030 */ 	lwc1	$f10,0x30($a0)
-/*  f01def8:	c4860018 */ 	lwc1	$f6,0x18($a0)
-/*  f01defc:	46005202 */ 	mul.s	$f8,$f10,$f0
-/*  f01df00:	46083480 */ 	add.s	$f18,$f6,$f8
-/*  f01df04:	e4920018 */ 	swc1	$f18,0x18($a0)
-/*  f01df08:	8d4f0000 */ 	lw	$t7,0x0($t2)
-/*  f01df0c:	01e32021 */ 	addu	$a0,$t7,$v1
-/*  f01df10:	c48a0034 */ 	lwc1	$f10,0x34($a0)
-/*  f01df14:	c484001c */ 	lwc1	$f4,0x1c($a0)
-/*  f01df18:	46005182 */ 	mul.s	$f6,$f10,$f0
-/*  f01df1c:	46062200 */ 	add.s	$f8,$f4,$f6
-/*  f01df20:	e488001c */ 	swc1	$f8,0x1c($a0)
-/*  f01df24:	8d580000 */ 	lw	$t8,0x0($t2)
-/*  f01df28:	03032021 */ 	addu	$a0,$t8,$v1
-/*  f01df2c:	c48a0020 */ 	lwc1	$f10,0x20($a0)
-/*  f01df30:	c4920008 */ 	lwc1	$f18,0x8($a0)
-/*  f01df34:	46005102 */ 	mul.s	$f4,$f10,$f0
-/*  f01df38:	46049180 */ 	add.s	$f6,$f18,$f4
-/*  f01df3c:	e4860008 */ 	swc1	$f6,0x8($a0)
-/*  f01df40:	8d590000 */ 	lw	$t9,0x0($t2)
-/*  f01df44:	03232021 */ 	addu	$a0,$t9,$v1
-/*  f01df48:	c48a0028 */ 	lwc1	$f10,0x28($a0)
-/*  f01df4c:	c4880010 */ 	lwc1	$f8,0x10($a0)
-/*  f01df50:	46005482 */ 	mul.s	$f18,$f10,$f0
-/*  f01df54:	46124100 */ 	add.s	$f4,$f8,$f18
-/*  f01df58:	18c0001b */ 	blez	$a2,.L0f01dfc8
-/*  f01df5c:	e4840010 */ 	swc1	$f4,0x10($a0)
-/*  f01df60:	24e70001 */ 	addiu	$a3,$a3,0x1
-/*  f01df64:	10e6000e */ 	beq	$a3,$a2,.L0f01dfa0
-/*  f01df68:	8d4c0000 */ 	lw	$t4,0x0($t2)
-.L0f01df6c:
-/*  f01df6c:	01832021 */ 	addu	$a0,$t4,$v1
-/*  f01df70:	c492000c */ 	lwc1	$f18,0xc($a0)
-/*  f01df74:	c48a0024 */ 	lwc1	$f10,0x24($a0)
-/*  f01df78:	24e70001 */ 	addiu	$a3,$a3,0x1
-/*  f01df7c:	460a9280 */ 	add.s	$f10,$f18,$f10
-/*  f01df80:	e48a000c */ 	swc1	$f10,0xc($a0)
-/*  f01df84:	8d4d0000 */ 	lw	$t5,0x0($t2)
-/*  f01df88:	01a32021 */ 	addu	$a0,$t5,$v1
-/*  f01df8c:	c48a0024 */ 	lwc1	$f10,0x24($a0)
-/*  f01df90:	460c5281 */ 	sub.s	$f10,$f10,$f12
-/*  f01df94:	e48a0024 */ 	swc1	$f10,0x24($a0)
-/*  f01df98:	14e6fff4 */ 	bne	$a3,$a2,.L0f01df6c
-/*  f01df9c:	8d4c0000 */ 	lw	$t4,0x0($t2)
-.L0f01dfa0:
-/*  f01dfa0:	01832021 */ 	addu	$a0,$t4,$v1
-/*  f01dfa4:	c492000c */ 	lwc1	$f18,0xc($a0)
-/*  f01dfa8:	c48a0024 */ 	lwc1	$f10,0x24($a0)
-/*  f01dfac:	460a9280 */ 	add.s	$f10,$f18,$f10
-/*  f01dfb0:	e48a000c */ 	swc1	$f10,0xc($a0)
-/*  f01dfb4:	8d4d0000 */ 	lw	$t5,0x0($t2)
-/*  f01dfb8:	01a32021 */ 	addu	$a0,$t5,$v1
-/*  f01dfbc:	c48a0024 */ 	lwc1	$f10,0x24($a0)
-/*  f01dfc0:	460c5281 */ 	sub.s	$f10,$f10,$f12
-/*  f01dfc4:	e48a0024 */ 	swc1	$f10,0x24($a0)
-.L0f01dfc8:
-/*  f01dfc8:	8d4e0000 */ 	lw	$t6,0x0($t2)
-/*  f01dfcc:	01c32021 */ 	addu	$a0,$t6,$v1
-/*  f01dfd0:	8c8f0004 */ 	lw	$t7,0x4($a0)
-/*  f01dfd4:	29e10096 */ 	slti	$at,$t7,0x96
-/*  f01dfd8:	54200005 */ 	bnezl	$at,.L0f01dff0
-/*  f01dfdc:	c482000c */ 	lwc1	$f2,0xc($a0)
-/*  f01dfe0:	ac800004 */ 	sw	$zero,0x4($a0)
-/*  f01dfe4:	8d580000 */ 	lw	$t8,0x0($t2)
-/*  f01dfe8:	03032021 */ 	addu	$a0,$t8,$v1
-/*  f01dfec:	c482000c */ 	lwc1	$f2,0xc($a0)
-.L0f01dff0:
-/*  f01dff0:	460e103c */ 	c.lt.s	$f2,$f14
-/*  f01dff4:	00000000 */ 	nop
-/*  f01dff8:	45030006 */ 	bc1tl	.L0f01e014
-/*  f01dffc:	ac800004 */ 	sw	$zero,0x4($a0)
-/*  f01e000:	4602803c */ 	c.lt.s	$f16,$f2
-/*  f01e004:	00000000 */ 	nop
-/*  f01e008:	45020003 */ 	bc1fl	.L0f01e018
-/*  f01e00c:	8d190000 */ 	lw	$t9,0x0($t0)
-/*  f01e010:	ac800004 */ 	sw	$zero,0x4($a0)
-.L0f01e014:
-/*  f01e014:	8d190000 */ 	lw	$t9,0x0($t0)
-.L0f01e018:
-/*  f01e018:	57200003 */ 	bnezl	$t9,.L0f01e028
-/*  f01e01c:	8d2c0000 */ 	lw	$t4,0x0($t1)
-/*  f01e020:	ad0b0000 */ 	sw	$t3,0x0($t0)
-/*  f01e024:	8d2c0000 */ 	lw	$t4,0x0($t1)
-.L0f01e028:
-/*  f01e028:	24420001 */ 	addiu	$v0,$v0,0x1
-/*  f01e02c:	2463006c */ 	addiu	$v1,$v1,0x6c
-/*  f01e030:	004c082a */ 	slt	$at,$v0,$t4
-/*  f01e034:	5420ff9c */ 	bnezl	$at,.L0f01dea8
-/*  f01e038:	8d580000 */ 	lw	$t8,0x0($t2)
-.L0f01e03c:
-/*  f01e03c:	03e00008 */ 	jr	$ra
-/*  f01e040:	00000000 */ 	nop
-/*  f01e044:	00000000 */ 	nop
-/*  f01e048:	00000000 */ 	nop
-/*  f01e04c:	00000000 */ 	nop
-);
+	if (g_ShardsActive) {
+		lvupdate = (g_Vars.lvupdate240_60 < 15) ? g_Vars.lvupdate240_60 : 15;
+
+		for (i = 0; i < g_MaxShards; i++) {
+			if (g_Shards[i].age60 > 0) {
+				g_Shards[i].age60 += (s32)lvupdate;
+
+				g_Shards[i].rot.x += g_Shards[i].rotspeed.x * lvupdate;
+				g_Shards[i].rot.y += g_Shards[i].rotspeed.y * lvupdate;
+				g_Shards[i].rot.z += g_Shards[i].rotspeed.z * lvupdate;
+				g_Shards[i].pos.x += g_Shards[i].vel.x * lvupdate;
+				g_Shards[i].pos.z += g_Shards[i].vel.z * lvupdate;
+
+				for (j = 0; j < (s32)lvupdate; j++) {
+					g_Shards[i].pos.y += g_Shards[i].vel.y;
+					g_Shards[i].vel.y -= 0.1f;
+				}
+
+				if (g_Shards[i].age60 >= 150) {
+					g_Shards[i].age60 = 0;
+				}
+
+				if (g_Shards[i].pos.y < -30000 || g_Shards[i].pos.y > 30000) {
+					g_Shards[i].age60 = 0;
+				}
+
+				if (!g_ShardsActive) {
+					g_ShardsActive = true;
+				}
+			}
+		}
+	}
+}
diff --git a/src/game/game_150820.c b/src/game/game_150820.c
index 37c39cf23..31435289d 100644
--- a/src/game/game_150820.c
+++ b/src/game/game_150820.c
@@ -120,8 +120,8 @@ glabel func0f150820
 /*  f15096c:	c64e0008 */ 	lwc1	$f14,0x8($s2)
 /*  f150970:	0fc259d4 */ 	jal	atan2f
 /*  f150974:	c64c0000 */ 	lwc1	$f12,0x0($s2)
-/*  f150978:	3c0e800a */ 	lui	$t6,%hi(var800a45c0)
-/*  f15097c:	8dce45c0 */ 	lw	$t6,%lo(var800a45c0)($t6)
+/*  f150978:	3c0e800a */ 	lui	$t6,%hi(g_MaxShards)
+/*  f15097c:	8dce45c0 */ 	lw	$t6,%lo(g_MaxShards)($t6)
 /*  f150980:	4616d501 */ 	sub.s	$f20,$f26,$f22
 /*  f150984:	46000786 */ 	mov.s	$f30,$f0
 /*  f150988:	4618e081 */ 	sub.s	$f2,$f28,$f24
@@ -430,9 +430,9 @@ glabel func0f150d38
 /*  f150e04:	2694fa80 */ 	addiu	$s4,$s4,%lo(var8007fa80)
 /*  f150e08:	8e980000 */ 	lw	$t8,0x0($s4)
 /*  f150e0c:	2416006c */ 	addiu	$s6,$zero,0x6c
-/*  f150e10:	3c15800a */ 	lui	$s5,%hi(var800a45c4)
+/*  f150e10:	3c15800a */ 	lui	$s5,%hi(g_Shards)
 /*  f150e14:	03160019 */ 	multu	$t8,$s6
-/*  f150e18:	26b545c4 */ 	addiu	$s5,$s5,%lo(var800a45c4)
+/*  f150e18:	26b545c4 */ 	addiu	$s5,$s5,%lo(g_Shards)
 /*  f150e1c:	8eaf0000 */ 	lw	$t7,0x0($s5)
 /*  f150e20:	8fb20078 */ 	lw	$s2,0x78($sp)
 /*  f150e24:	240d0001 */ 	addiu	$t5,$zero,0x1
@@ -1022,10 +1022,10 @@ glabel func0f150d38
 /*  f1516f8:	01960019 */ 	multu	$t4,$s6
 /*  f1516fc:	c42a738c */ 	lwc1	$f10,%lo(var7f1b738c)($at)
 /*  f151700:	8ea90000 */ 	lw	$t1,0x0($s5)
-/*  f151704:	3c0d800a */ 	lui	$t5,%hi(var800a45c0)
-/*  f151708:	3c028008 */ 	lui	$v0,%hi(var8007fa84)
+/*  f151704:	3c0d800a */ 	lui	$t5,%hi(g_MaxShards)
+/*  f151708:	3c028008 */ 	lui	$v0,%hi(g_ShardsActive)
 /*  f15170c:	460a3402 */ 	mul.s	$f16,$f6,$f10
-/*  f151710:	2442fa84 */ 	addiu	$v0,$v0,%lo(var8007fa84)
+/*  f151710:	2442fa84 */ 	addiu	$v0,$v0,%lo(g_ShardsActive)
 /*  f151714:	240a0001 */ 	addiu	$t2,$zero,0x1
 /*  f151718:	0000c812 */ 	mflo	$t9
 /*  f15171c:	01397821 */ 	addu	$t7,$t1,$t9
@@ -1033,7 +1033,7 @@ glabel func0f150d38
 /*  f151724:	8e8b0000 */ 	lw	$t3,0x0($s4)
 /*  f151728:	256e0001 */ 	addiu	$t6,$t3,0x1
 /*  f15172c:	ae8e0000 */ 	sw	$t6,0x0($s4)
-/*  f151730:	8dad45c0 */ 	lw	$t5,%lo(var800a45c0)($t5)
+/*  f151730:	8dad45c0 */ 	lw	$t5,%lo(g_MaxShards)($t5)
 /*  f151734:	01cd082a */ 	slt	$at,$t6,$t5
 /*  f151738:	54200003 */ 	bnezl	$at,.L0f151748
 /*  f15173c:	8c580000 */ 	lw	$t8,0x0($v0)
@@ -1060,8 +1060,8 @@ glabel func0f150d38
 GLOBAL_ASM(
 glabel func0f151780
 /*  f151780:	27bdfed0 */ 	addiu	$sp,$sp,-304
-/*  f151784:	3c0e8008 */ 	lui	$t6,%hi(var8007fa84)
-/*  f151788:	8dcefa84 */ 	lw	$t6,%lo(var8007fa84)($t6)
+/*  f151784:	3c0e8008 */ 	lui	$t6,%hi(g_ShardsActive)
+/*  f151788:	8dcefa84 */ 	lw	$t6,%lo(g_ShardsActive)($t6)
 /*  f15178c:	afb30054 */ 	sw	$s3,0x54($sp)
 /*  f151790:	00809825 */ 	or	$s3,$a0,$zero
 /*  f151794:	afbf006c */ 	sw	$ra,0x6c($sp)
@@ -1132,8 +1132,8 @@ glabel func0f151780
 /*  f151898:	0c012d20 */ 	jal	osVirtualToPhysical
 /*  f15189c:	00402025 */ 	or	$a0,$v0,$zero
 /*  f1518a0:	ae020004 */ 	sw	$v0,0x4($s0)
-/*  f1518a4:	3c08800a */ 	lui	$t0,%hi(var800a45c0)
-/*  f1518a8:	8d0845c0 */ 	lw	$t0,%lo(var800a45c0)($t0)
+/*  f1518a4:	3c08800a */ 	lui	$t0,%hi(g_MaxShards)
+/*  f1518a8:	8d0845c0 */ 	lw	$t0,%lo(g_MaxShards)($t0)
 /*  f1518ac:	0000f025 */ 	or	$s8,$zero,$zero
 /*  f1518b0:	0000a025 */ 	or	$s4,$zero,$zero
 /*  f1518b4:	19000159 */ 	blez	$t0,.L0f151e1c
@@ -1145,9 +1145,9 @@ glabel func0f151780
 /*  f1518cc:	c43a7394 */ 	lwc1	$f26,%lo(var7f1b7394)($at)
 /*  f1518d0:	3c013f80 */ 	lui	$at,0x3f80
 /*  f1518d4:	3c158008 */ 	lui	$s5,%hi(var8007fa80)
-/*  f1518d8:	3c12800a */ 	lui	$s2,%hi(var800a45c4)
+/*  f1518d8:	3c12800a */ 	lui	$s2,%hi(g_Shards)
 /*  f1518dc:	4481c000 */ 	mtc1	$at,$f24
-/*  f1518e0:	265245c4 */ 	addiu	$s2,$s2,%lo(var800a45c4)
+/*  f1518e0:	265245c4 */ 	addiu	$s2,$s2,%lo(g_Shards)
 /*  f1518e4:	26b5fa80 */ 	addiu	$s5,$s5,%lo(var8007fa80)
 /*  f1518e8:	c7b600bc */ 	lwc1	$f22,0xbc($sp)
 /*  f1518ec:	2416000c */ 	addiu	$s6,$zero,0xc
@@ -1495,8 +1495,8 @@ glabel func0f151780
 /*  f151df4:	ac6c0000 */ 	sw	$t4,0x0($v1)
 /*  f151df8:	26730008 */ 	addiu	$s3,$s3,0x8
 .L0f151dfc:
-/*  f151dfc:	3c0d800a */ 	lui	$t5,%hi(var800a45c0)
-/*  f151e00:	8dad45c0 */ 	lw	$t5,%lo(var800a45c0)($t5)
+/*  f151dfc:	3c0d800a */ 	lui	$t5,%hi(g_MaxShards)
+/*  f151e00:	8dad45c0 */ 	lw	$t5,%lo(g_MaxShards)($t5)
 /*  f151e04:	27de0001 */ 	addiu	$s8,$s8,0x1
 /*  f151e08:	2694006c */ 	addiu	$s4,$s4,0x6c
 /*  f151e0c:	03cd082a */ 	slt	$at,$s8,$t5
@@ -1556,8 +1556,8 @@ glabel func0f151780
 GLOBAL_ASM(
 glabel func0f151ed0
 /*  f151ed0:	27bdfec0 */ 	addiu	$sp,$sp,-320
-/*  f151ed4:	3c0e8008 */ 	lui	$t6,%hi(var8007fa84)
-/*  f151ed8:	8dcefa84 */ 	lw	$t6,%lo(var8007fa84)($t6)
+/*  f151ed4:	3c0e8008 */ 	lui	$t6,%hi(g_ShardsActive)
+/*  f151ed8:	8dcefa84 */ 	lw	$t6,%lo(g_ShardsActive)($t6)
 /*  f151edc:	afbf007c */ 	sw	$ra,0x7c($sp)
 /*  f151ee0:	afbe0078 */ 	sw	$s8,0x78($sp)
 /*  f151ee4:	afb70074 */ 	sw	$s7,0x74($sp)
@@ -1671,8 +1671,8 @@ glabel func0f151ed0
 /*  f152088:	0c012d20 */ 	jal	osVirtualToPhysical
 /*  f15208c:	00402025 */ 	or	$a0,$v0,$zero
 /*  f152090:	ae020004 */ 	sw	$v0,0x4($s0)
-/*  f152094:	3c0a800a */ 	lui	$t2,%hi(var800a45c0)
-/*  f152098:	8d4a45c0 */ 	lw	$t2,%lo(var800a45c0)($t2)
+/*  f152094:	3c0a800a */ 	lui	$t2,%hi(g_MaxShards)
+/*  f152098:	8d4a45c0 */ 	lw	$t2,%lo(g_MaxShards)($t2)
 /*  f15209c:	0000b825 */ 	or	$s7,$zero,$zero
 /*  f1520a0:	00009825 */ 	or	$s3,$zero,$zero
 /*  f1520a4:	1940015f */ 	blez	$t2,.L0f152624
@@ -1684,9 +1684,9 @@ glabel func0f151ed0
 /*  f1520bc:	c43a739c */ 	lwc1	$f26,%lo(var7f1b739c)($at)
 /*  f1520c0:	3c013f80 */ 	lui	$at,0x3f80
 /*  f1520c4:	3c148008 */ 	lui	$s4,%hi(var8007fa80)
-/*  f1520c8:	3c12800a */ 	lui	$s2,%hi(var800a45c4)
+/*  f1520c8:	3c12800a */ 	lui	$s2,%hi(g_Shards)
 /*  f1520cc:	4481c000 */ 	mtc1	$at,$f24
-/*  f1520d0:	265245c4 */ 	addiu	$s2,$s2,%lo(var800a45c4)
+/*  f1520d0:	265245c4 */ 	addiu	$s2,$s2,%lo(g_Shards)
 /*  f1520d4:	2694fa80 */ 	addiu	$s4,$s4,%lo(var8007fa80)
 /*  f1520d8:	c7b600cc */ 	lwc1	$f22,0xcc($sp)
 /*  f1520dc:	27be00f8 */ 	addiu	$s8,$sp,0xf8
@@ -2040,8 +2040,8 @@ glabel func0f151ed0
 /*  f1525fc:	ad8f0004 */ 	sw	$t7,0x4($t4)
 /*  f152600:	ad8e0000 */ 	sw	$t6,0x0($t4)
 .L0f152604:
-/*  f152604:	3c18800a */ 	lui	$t8,%hi(var800a45c0)
-/*  f152608:	8f1845c0 */ 	lw	$t8,%lo(var800a45c0)($t8)
+/*  f152604:	3c18800a */ 	lui	$t8,%hi(g_MaxShards)
+/*  f152608:	8f1845c0 */ 	lw	$t8,%lo(g_MaxShards)($t8)
 /*  f15260c:	26f70001 */ 	addiu	$s7,$s7,0x1
 /*  f152610:	2673006c */ 	addiu	$s3,$s3,0x6c
 /*  f152614:	02f8082a */ 	slt	$at,$s7,$t8
diff --git a/src/gvars/gvars.c b/src/gvars/gvars.c
index d34b29aae..64c3bd8c3 100644
--- a/src/gvars/gvars.c
+++ b/src/gvars/gvars.c
@@ -14969,8 +14969,8 @@ u32 var800a45b0 = 0;
 u32 var800a45b4 = 0;
 u32 var800a45b8 = 0;
 u32 var800a45bc = 0;
-s32 var800a45c0 = 0;
-struct var800a45c4 *var800a45c4 = NULL;
+s32 g_MaxShards = 0;
+struct shard *g_Shards = NULL;
 u32 var800a45c8 = 0;
 u32 var800a45cc = 0;
 struct var800a45d0 var800a45d0 = {0};
diff --git a/src/include/game/data/data_020df0.h b/src/include/game/data/data_020df0.h
index 74022b3a9..78a824d54 100644
--- a/src/include/game/data/data_020df0.h
+++ b/src/include/game/data/data_020df0.h
@@ -203,7 +203,7 @@ extern u32 var8007f9d8;
 extern u32 var8007f9fc;
 extern u32 var8007fa60;
 extern u32 var8007fa80;
-extern u32 var8007fa84;
+extern bool g_ShardsActive;
 extern u8 g_InGameSubtitles;
 extern u8 g_CutsceneSubtitles;
 extern s32 g_ScreenSize;
diff --git a/src/include/game/game_013550.h b/src/include/game/game_013550.h
index f1e65e0e6..bea040205 100644
--- a/src/include/game/game_013550.h
+++ b/src/include/game/game_013550.h
@@ -4,7 +4,7 @@
 #include "types.h"
 
 u32 func0f013550(void);
-void func0f0139f0(void);
+void shardsInit(void);
 void func0f013b80(void);
 void func0f013ba0(void);
 
diff --git a/src/include/game/game_015420.h b/src/include/game/game_015420.h
index 27e0a8960..8160315e8 100644
--- a/src/include/game/game_015420.h
+++ b/src/include/game/game_015420.h
@@ -3,6 +3,6 @@
 #include <ultra64.h>
 #include "types.h"
 
-u32 func0f015420(void);
+u32 shardsReset(void);
 
 #endif
diff --git a/src/include/game/game_01de30.h b/src/include/game/game_01de30.h
index 2ddf5337d..f81096379 100644
--- a/src/include/game/game_01de30.h
+++ b/src/include/game/game_01de30.h
@@ -3,6 +3,6 @@
 #include <ultra64.h>
 #include "types.h"
 
-void func0f01de30(void);
+void shardsTick(void);
 
 #endif
diff --git a/src/include/gvars/gvars.h b/src/include/gvars/gvars.h
index 307372a2e..b792fa227 100644
--- a/src/include/gvars/gvars.h
+++ b/src/include/gvars/gvars.h
@@ -694,8 +694,8 @@ extern char var800a41c0[];
 extern u32 var800a41d8;
 extern u32 var800a45a0;
 extern u32 var800a45a8;
-extern s32 var800a45c0; // count of var800a45c4
-extern struct var800a45c4 *var800a45c4;
+extern s32 g_MaxShards; // count of g_Shards
+extern struct shard *g_Shards;
 extern struct var800a45d0 var800a45d0;
 extern Gfx *var800a4634;
 extern struct var800a4640 var800a4640;
diff --git a/src/include/types.h b/src/include/types.h
index aef96ef42..d60dea56a 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -6687,21 +6687,13 @@ struct gfxvtx {
 	/*0x0a*/ s16 unk0a;
 };
 
-struct var800a45c4 {
+struct shard {
 	/*0x00*/ u32 unk00;
-	/*0x04*/ u32 unk04;
-	/*0x08*/ u32 unk08;
-	/*0x0c*/ u32 unk0c;
-	/*0x10*/ u32 unk10;
-	/*0x14*/ u32 unk14;
-	/*0x18*/ u32 unk18;
-	/*0x1c*/ u32 unk1c;
-	/*0x20*/ u32 unk20;
-	/*0x24*/ u32 unk24;
-	/*0x28*/ u32 unk28;
-	/*0x2c*/ u32 unk2c;
-	/*0x30*/ u32 unk30;
-	/*0x34*/ u32 unk34;
+	/*0x04*/ s32 age60;
+	/*0x08*/ struct coord pos;
+	/*0x14*/ struct coord rot;
+	/*0x20*/ struct coord vel;
+	/*0x2c*/ struct coord rotspeed;
 	/*0x38*/ u32 unk38;
 	/*0x3c*/ u32 unk3c;
 	/*0x40*/ u32 unk40;