diff --git a/ld/gamefiles.inc b/ld/gamefiles.inc
index 2f4928c91..cf91839c6 100644
--- a/ld/gamefiles.inc
+++ b/ld/gamefiles.inc
@@ -130,7 +130,7 @@
 	build/ROMID/game/game_127910.o (section); \
 	build/ROMID/game/game_128f30.o (section); \
 	build/ROMID/game/game_129210.o (section); \
-	build/ROMID/game/game_129900.o (section); \
+	build/ROMID/game/explosion.o (section); \
 	build/ROMID/game/game_12d3f0.o (section); \
 	build/ROMID/game/game_12f6c0.o (section); \
 	build/ROMID/game/weather.o (section); \
diff --git a/src/game/chr/chr.c b/src/game/chr/chr.c
index e19b4f82b..86f2dfb5f 100644
--- a/src/game/chr/chr.c
+++ b/src/game/chr/chr.c
@@ -26,7 +26,7 @@
 #include "game/game_127910.h"
 #include "game/game_128f30.h"
 #include "game/game_129210.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12d3f0.h"
 #include "game/game_12f6c0.h"
 #include "game/game_157db0.h"
diff --git a/src/game/chr/chraction.c b/src/game/chr/chraction.c
index 0a5037939..e9d34fa46 100644
--- a/src/game/chr/chraction.c
+++ b/src/game/chr/chraction.c
@@ -28,7 +28,7 @@
 #include "game/game_0b63b0.h"
 #include "game/game_111600.h"
 #include "game/game_127910.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12f6c0.h"
 #include "game/game_157db0.h"
 #include "game/game_1655c0.h"
@@ -3821,7 +3821,7 @@ glabel var7f1a8d44
 /*  f031bf4:	8da40000 */ 	lw	$a0,0x0($t5)
 /*  f031bf8:	afa00010 */ 	sw	$zero,0x10($sp)
 /*  f031bfc:	24850008 */ 	addiu	$a1,$a0,0x8
-/*  f031c00:	0fc4a640 */ 	jal	func0f129900
+/*  f031c00:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f031c04:	24860028 */ 	addiu	$a2,$a0,0x28
 /*  f031c08:	0fc447a9 */ 	jal	currentPlayerRemoveWeapon
 /*  f031c0c:	2404002e */ 	addiu	$a0,$zero,0x2e
@@ -15318,7 +15318,7 @@ void chrTickDie(struct chrdata *chr)
 	if (race == RACE_ROBOT) {
 		struct prop *prop = chr->prop;
 		func0f0926bc(prop, 1, 0xffff);
-		func0f129900(prop, &prop->pos, prop->rooms, 8, g_Vars.currentplayernum);
+		explosionCreateSimple(prop, &prop->pos, prop->rooms, EXPLOSIONTYPE_8, g_Vars.currentplayernum);
 		chr->hidden |= CHRHFLAG_00000020;
 		return;
 	}
@@ -15344,7 +15344,7 @@ void chrTickDie(struct chrdata *chr)
 
 		if (var8006807c > 310) {
 			func0f0926bc(prop, 1, 0xffff);
-			func0f129900(prop, &prop->pos, prop->rooms, 8, g_Vars.currentplayernum);
+			explosionCreateSimple(prop, &prop->pos, prop->rooms, EXPLOSIONTYPE_8, g_Vars.currentplayernum);
 			func0f03119c(chr);
 		} else if (chr->soundtimer > (s32)var80068080) {
 			chr->soundtimer = 0;
@@ -19871,7 +19871,7 @@ glabel var7f1a9184
 /*  f041948:	27a50228 */ 	addiu	$a1,$sp,0x228
 /*  f04194c:	27a60214 */ 	addiu	$a2,$sp,0x214
 /*  f041950:	24070016 */ 	addiu	$a3,$zero,0x16
-/*  f041954:	0fc4a640 */ 	jal	func0f129900
+/*  f041954:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f041958:	afa30010 */ 	sw	$v1,0x10($sp)
 .L0f04195c:
 /*  f04195c:	8fae01c0 */ 	lw	$t6,0x1c0($sp)
diff --git a/src/game/chr/chraicommands.c b/src/game/chr/chraicommands.c
index aa7d65563..aef696ae9 100644
--- a/src/game/chr/chraicommands.c
+++ b/src/game/chr/chraicommands.c
@@ -31,7 +31,7 @@
 #include "game/game_0dcdb0.h"
 #include "game/game_111600.h"
 #include "game/game_127910.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12d3f0.h"
 #include "game/weather.h"
 #include "game/game_157db0.h"
@@ -2351,7 +2351,7 @@ bool aiDestroyObject(void)
 
 		if (entity->modelnum == MODEL_ELVIS_SAUCER) {
 			obj->flags = (obj->flags & ~OBJFLAG_00010000) | OBJFLAG_INVINCIBLE;
-			func0f129900(entity->prop, &entity->prop->pos, entity->prop->rooms, 3, 0);
+			explosionCreateSimple(entity->prop, &entity->prop->pos, entity->prop->rooms, EXPLOSIONTYPE_3, 0);
 			func0f12e714(entity->prop, 0x16);
 		} else {
 			f32 damage = ((obj->maxdamage - obj->damage) + 1) / 250.0f;
diff --git a/src/game/game_129900.c b/src/game/explosion.c
similarity index 96%
rename from src/game/game_129900.c
rename to src/game/explosion.c
index ef207cd0b..94e6786f1 100644
--- a/src/game/game_129900.c
+++ b/src/game/explosion.c
@@ -14,7 +14,7 @@
 #include "game/game_091e10.h"
 #include "game/game_092610.h"
 #include "game/game_0b3350.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12d3f0.h"
 #include "game/game_157db0.h"
 #include "game/game_1668e0.h"
@@ -55,134 +55,46 @@ const char var7f1b5568[] = "";
 const char var7f1b556c[] = "";
 const char var7f1b5570[] = "ecol";
 
-bool func0f129900(struct prop *prop, struct coord *pos, s16 *room, s16 arg3, s32 playernum)
+bool explosionCreateSimple(struct prop *prop, struct coord *pos, s16 *rooms, s16 type, s32 playernum)
 {
-	return explosionCreate(prop, pos, room, arg3, playernum, 0, 0, 0, 0);
+	return explosionCreate(prop, pos, rooms, type, playernum, false, NULL, 0, NULL);
 }
 
-GLOBAL_ASM(
-glabel func0f129940
-/*  f129940:	27bdff90 */ 	addiu	$sp,$sp,-112
-/*  f129944:	afa7007c */ 	sw	$a3,0x7c($sp)
-/*  f129948:	87ae007e */ 	lh	$t6,0x7e($sp)
-/*  f12994c:	afb10030 */ 	sw	$s1,0x30($sp)
-/*  f129950:	afb0002c */ 	sw	$s0,0x2c($sp)
-/*  f129954:	00808025 */ 	or	$s0,$a0,$zero
-/*  f129958:	00a08825 */ 	or	$s1,$a1,$zero
-/*  f12995c:	afbf0034 */ 	sw	$ra,0x34($sp)
-/*  f129960:	afa60078 */ 	sw	$a2,0x78($sp)
-/*  f129964:	15c00003 */ 	bnez	$t6,.L0f129974
-/*  f129968:	24080001 */ 	addiu	$t0,$zero,0x1
-/*  f12996c:	10000061 */ 	beqz	$zero,.L0f129af4
-/*  f129970:	00001025 */ 	or	$v0,$zero,$zero
-.L0f129974:
-/*  f129974:	12000016 */ 	beqz	$s0,.L0f1299d0
-/*  f129978:	02202025 */ 	or	$a0,$s1,$zero
-/*  f12997c:	27af0058 */ 	addiu	$t7,$sp,0x58
-/*  f129980:	27b80044 */ 	addiu	$t8,$sp,0x44
-/*  f129984:	afb80014 */ 	sw	$t8,0x14($sp)
-/*  f129988:	afaf0010 */ 	sw	$t7,0x10($sp)
-/*  f12998c:	26040008 */ 	addiu	$a0,$s0,0x8
-/*  f129990:	26050028 */ 	addiu	$a1,$s0,0x28
-/*  f129994:	27a60048 */ 	addiu	$a2,$sp,0x48
-/*  f129998:	00003825 */ 	or	$a3,$zero,$zero
-/*  f12999c:	0c00a959 */ 	jal	func0002a564
-/*  f1299a0:	afa80050 */ 	sw	$t0,0x50($sp)
-/*  f1299a4:	c6040008 */ 	lwc1	$f4,0x8($s0)
-/*  f1299a8:	c7a60048 */ 	lwc1	$f6,0x48($sp)
-/*  f1299ac:	00021c00 */ 	sll	$v1,$v0,0x10
-/*  f1299b0:	e7a40064 */ 	swc1	$f4,0x64($sp)
-/*  f1299b4:	e7a60068 */ 	swc1	$f6,0x68($sp)
-/*  f1299b8:	c6080010 */ 	lwc1	$f8,0x10($s0)
-/*  f1299bc:	0003cc03 */ 	sra	$t9,$v1,0x10
-/*  f1299c0:	03201825 */ 	or	$v1,$t9,$zero
-/*  f1299c4:	8fa80050 */ 	lw	$t0,0x50($sp)
-/*  f1299c8:	10000014 */ 	beqz	$zero,.L0f129a1c
-/*  f1299cc:	e7a8006c */ 	swc1	$f8,0x6c($sp)
-.L0f1299d0:
-/*  f1299d0:	27a90058 */ 	addiu	$t1,$sp,0x58
-/*  f1299d4:	27aa0044 */ 	addiu	$t2,$sp,0x44
-/*  f1299d8:	afaa0014 */ 	sw	$t2,0x14($sp)
-/*  f1299dc:	afa90010 */ 	sw	$t1,0x10($sp)
-/*  f1299e0:	8fa50078 */ 	lw	$a1,0x78($sp)
-/*  f1299e4:	27a60048 */ 	addiu	$a2,$sp,0x48
-/*  f1299e8:	00003825 */ 	or	$a3,$zero,$zero
-/*  f1299ec:	0c00a959 */ 	jal	func0002a564
-/*  f1299f0:	afa80050 */ 	sw	$t0,0x50($sp)
-/*  f1299f4:	c62a0000 */ 	lwc1	$f10,0x0($s1)
-/*  f1299f8:	c7b00048 */ 	lwc1	$f16,0x48($sp)
-/*  f1299fc:	00021c00 */ 	sll	$v1,$v0,0x10
-/*  f129a00:	e7aa0064 */ 	swc1	$f10,0x64($sp)
-/*  f129a04:	e7b00068 */ 	swc1	$f16,0x68($sp)
-/*  f129a08:	c6320008 */ 	lwc1	$f18,0x8($s1)
-/*  f129a0c:	00035c03 */ 	sra	$t3,$v1,0x10
-/*  f129a10:	01601825 */ 	or	$v1,$t3,$zero
-/*  f129a14:	8fa80050 */ 	lw	$t0,0x50($sp)
-/*  f129a18:	e7b2006c */ 	swc1	$f18,0x6c($sp)
-.L0f129a1c:
-/*  f129a1c:	8fac0044 */ 	lw	$t4,0x44($sp)
-/*  f129a20:	02002025 */ 	or	$a0,$s0,$zero
-/*  f129a24:	02202825 */ 	or	$a1,$s1,$zero
-/*  f129a28:	15800027 */ 	bnez	$t4,.L0f129ac8
-/*  f129a2c:	8fa60078 */ 	lw	$a2,0x78($sp)
-/*  f129a30:	00026c00 */ 	sll	$t5,$v0,0x10
-/*  f129a34:	000d7403 */ 	sra	$t6,$t5,0x10
-/*  f129a38:	19c00023 */ 	blez	$t6,.L0f129ac8
-/*  f129a3c:	87af007e */ 	lh	$t7,0x7e($sp)
-/*  f129a40:	000fc080 */ 	sll	$t8,$t7,0x2
-/*  f129a44:	030fc023 */ 	subu	$t8,$t8,$t7
-/*  f129a48:	0018c080 */ 	sll	$t8,$t8,0x2
-/*  f129a4c:	030fc023 */ 	subu	$t8,$t8,$t7
-/*  f129a50:	3c198008 */ 	lui	$t9,%hi(g_ExplosionTypes)
-/*  f129a54:	2739e4b8 */ 	addiu	$t9,$t9,%lo(g_ExplosionTypes)
-/*  f129a58:	0018c080 */ 	sll	$t8,$t8,0x2
-/*  f129a5c:	03191021 */ 	addu	$v0,$t8,$t9
-/*  f129a60:	8449001c */ 	lh	$t1,0x1c($v0)
-/*  f129a64:	c448000c */ 	lwc1	$f8,0xc($v0)
-/*  f129a68:	c6240004 */ 	lwc1	$f4,0x4($s1)
-/*  f129a6c:	44895000 */ 	mtc1	$t1,$f10
-/*  f129a70:	c7a60048 */ 	lwc1	$f6,0x48($sp)
-/*  f129a74:	3c013f00 */ 	lui	$at,0x3f00
-/*  f129a78:	46805420 */ 	cvt.s.w	$f16,$f10
-/*  f129a7c:	c44a0010 */ 	lwc1	$f10,0x10($v0)
-/*  f129a80:	46062001 */ 	sub.s	$f0,$f4,$f6
-/*  f129a84:	46104482 */ 	mul.s	$f18,$f8,$f16
-/*  f129a88:	c4440004 */ 	lwc1	$f4,0x4($v0)
-/*  f129a8c:	44818000 */ 	mtc1	$at,$f16
-/*  f129a90:	3c014296 */ 	lui	$at,0x4296
-/*  f129a94:	46122180 */ 	add.s	$f6,$f4,$f18
-/*  f129a98:	460a3200 */ 	add.s	$f8,$f6,$f10
-/*  f129a9c:	46104102 */ 	mul.s	$f4,$f8,$f16
-/*  f129aa0:	4604003e */ 	c.le.s	$f0,$f4
-/*  f129aa4:	00000000 */ 	sll	$zero,$zero,0x0
-/*  f129aa8:	45030009 */ 	bc1tl	.L0f129ad0
-/*  f129aac:	8faa0080 */ 	lw	$t2,0x80($sp)
-/*  f129ab0:	44819000 */ 	mtc1	$at,$f18
-/*  f129ab4:	00000000 */ 	sll	$zero,$zero,0x0
-/*  f129ab8:	4612003e */ 	c.le.s	$f0,$f18
-/*  f129abc:	00000000 */ 	sll	$zero,$zero,0x0
-/*  f129ac0:	45030003 */ 	bc1tl	.L0f129ad0
-/*  f129ac4:	8faa0080 */ 	lw	$t2,0x80($sp)
-.L0f129ac8:
-/*  f129ac8:	00004025 */ 	or	$t0,$zero,$zero
-/*  f129acc:	8faa0080 */ 	lw	$t2,0x80($sp)
-.L0f129ad0:
-/*  f129ad0:	27ab0064 */ 	addiu	$t3,$sp,0x64
-/*  f129ad4:	27ac0058 */ 	addiu	$t4,$sp,0x58
-/*  f129ad8:	afac0020 */ 	sw	$t4,0x20($sp)
-/*  f129adc:	afab0018 */ 	sw	$t3,0x18($sp)
-/*  f129ae0:	87a7007e */ 	lh	$a3,0x7e($sp)
-/*  f129ae4:	afa80014 */ 	sw	$t0,0x14($sp)
-/*  f129ae8:	afa3001c */ 	sw	$v1,0x1c($sp)
-/*  f129aec:	0fc4a7d5 */ 	jal	explosionCreate
-/*  f129af0:	afaa0010 */ 	sw	$t2,0x10($sp)
-.L0f129af4:
-/*  f129af4:	8fbf0034 */ 	lw	$ra,0x34($sp)
-/*  f129af8:	8fb0002c */ 	lw	$s0,0x2c($sp)
-/*  f129afc:	8fb10030 */ 	lw	$s1,0x30($sp)
-/*  f129b00:	03e00008 */ 	jr	$ra
-/*  f129b04:	27bd0070 */ 	addiu	$sp,$sp,0x70
-);
+bool explosionCreateComplex(struct prop *prop, struct coord *pos, s16 *rooms, s16 type, s32 playernum)
+{
+	struct coord sp100;
+	struct coord sp88;
+	struct explosiontype *etype;
+	bool sp80 = true;
+	s16 ret;
+	f32 y;
+	bool sp68;
+
+	if (type == EXPLOSIONTYPE_0) {
+		return false;
+	}
+
+	if (prop) {
+		ret = func0002a564(&prop->pos, prop->rooms, &y, 0, &sp88, &sp68);
+		sp100.x = prop->pos.x;
+		sp100.y = y;
+		sp100.z = prop->pos.z;
+	} else {
+		ret = func0002a564(pos, rooms, &y, 0, &sp88, &sp68);
+		sp100.x = pos->x;
+		sp100.y = y;
+		sp100.z = pos->z;
+	}
+
+	etype = &g_ExplosionTypes[type];
+
+	if (sp68 || ret <= 0
+			|| !(pos->y - y <= (etype->rangev + etype->changeratev * etype->duration + etype->innersize) * 0.5f || pos->y - y <= 75)) {
+		sp80 = false;
+	}
+
+	return explosionCreate(prop, pos, rooms, type, playernum, sp80, &sp100, ret, &sp88);
+}
 
 GLOBAL_ASM(
 glabel func0f129b08
diff --git a/src/game/game_0601b0.c b/src/game/game_0601b0.c
index 931c6d2ba..e3e67b940 100644
--- a/src/game/game_0601b0.c
+++ b/src/game/game_0601b0.c
@@ -22,7 +22,7 @@
 #include "game/game_0b3350.h"
 #include "game/game_0b63b0.h"
 #include "game/game_127910.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12d3f0.h"
 #include "game/game_12f6c0.h"
 #include "game/game_157db0.h"
@@ -1540,7 +1540,7 @@ glabel var7f1a9eb8
 /*  f0616a0:	27a5008c */ 	addiu	$a1,$sp,0x8c
 /*  f0616a4:	27a6007c */ 	addiu	$a2,$sp,0x7c
 /*  f0616a8:	24070016 */ 	addiu	$a3,$zero,0x16
-/*  f0616ac:	0fc4a640 */ 	jal	func0f129900
+/*  f0616ac:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f0616b0:	afaf0010 */ 	sw	$t7,0x10($sp)
 /*  f0616b4:	8fa806d0 */ 	lw	$t0,0x6d0($sp)
 /*  f0616b8:	26100068 */ 	addiu	$s0,$s0,0x68
@@ -1669,7 +1669,7 @@ glabel var7f1a9eb8
 /*  f06187c:	8defa24c */ 	lw	$t7,%lo(g_Vars+0x28c)($t7)
 /*  f061880:	02003025 */ 	or	$a2,$s0,$zero
 /*  f061884:	24070016 */ 	addiu	$a3,$zero,0x16
-/*  f061888:	0fc4a640 */ 	jal	func0f129900
+/*  f061888:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f06188c:	afaf0010 */ 	sw	$t7,0x10($sp)
 /*  f061890:	100000b0 */ 	beqz	$zero,.L0f061b54
 /*  f061894:	00000000 */ 	sll	$zero,$zero,0x0
@@ -1734,7 +1734,7 @@ glabel var7f1a9eb8
 /*  f061964:	27a50694 */ 	addiu	$a1,$sp,0x694
 /*  f061968:	02003025 */ 	or	$a2,$s0,$zero
 /*  f06196c:	24070001 */ 	addiu	$a3,$zero,0x1
-/*  f061970:	0fc4a640 */ 	jal	func0f129900
+/*  f061970:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f061974:	afa90010 */ 	sw	$t1,0x10($sp)
 .L0f061978:
 /*  f061978:	3c0c800a */ 	lui	$t4,%hi(g_Vars+0x6c)
diff --git a/src/game/game_0b63b0.c b/src/game/game_0b63b0.c
index 02e377f19..a91f6d744 100644
--- a/src/game/game_0b63b0.c
+++ b/src/game/game_0b63b0.c
@@ -33,7 +33,7 @@
 #include "game/game_107fb0.h"
 #include "game/game_111600.h"
 #include "game/game_127910.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_141820.h"
 #include "game/game_1531a0.h"
 #include "game/game_157db0.h"
@@ -6688,7 +6688,7 @@ glabel func0f0bc120
 /*  f0bc3a0:	e7a80038 */ 	swc1	$f8,0x38($sp)
 /*  f0bc3a4:	8dc600bc */ 	lw	$a2,0xbc($t6)
 /*  f0bc3a8:	afaf0010 */ 	sw	$t7,0x10($sp)
-/*  f0bc3ac:	0fc4a640 */ 	jal	func0f129900
+/*  f0bc3ac:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f0bc3b0:	24c60028 */ 	addiu	$a2,$a2,0x28
 /*  f0bc3b4:	0c004b70 */ 	jal	random
 /*  f0bc3b8:	00000000 */ 	sll	$zero,$zero,0x0
diff --git a/src/game/game_167ae0.c b/src/game/game_167ae0.c
index 350b95ace..d103117fc 100644
--- a/src/game/game_167ae0.c
+++ b/src/game/game_167ae0.c
@@ -71,7 +71,7 @@
 #include "game/game_11f000.h"
 #include "game/game_127910.h"
 #include "game/game_129210.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12f6c0.h"
 #include "game/weather.h"
 #include "game/game_135c70.h"
@@ -2531,7 +2531,7 @@ glabel var7f1b7868
 /*  f16a1cc:	8da40000 */ 	lw	$a0,0x0($t5)
 /*  f16a1d0:	afa00010 */ 	sw	$zero,0x10($sp)
 /*  f16a1d4:	24850008 */ 	addiu	$a1,$a0,0x8
-/*  f16a1d8:	0fc4a640 */ 	jal	func0f129900
+/*  f16a1d8:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f16a1dc:	24860028 */ 	addiu	$a2,$a0,0x28
 /*  f16a1e0:	8e6f0284 */ 	lw	$t7,0x284($s3)
 /*  f16a1e4:	27aa00d0 */ 	addiu	$t2,$sp,0xd0
diff --git a/src/game/game_19c990.c b/src/game/game_19c990.c
index 6a15068e0..10bcacdfa 100644
--- a/src/game/game_19c990.c
+++ b/src/game/game_19c990.c
@@ -21,7 +21,7 @@
 #include "game/game_0f09f0.h"
 #include "game/game_107fb0.h"
 #include "game/game_111600.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_150820.h"
 #include "game/game_1531a0.h"
 #include "game/game_157db0.h"
@@ -3625,7 +3625,7 @@ glabel var7f1b94e4
 /*  f1a01fc:	240a0001 */ 	addiu	$t2,$zero,0x1
 /*  f1a0200:	afaa0010 */ 	sw	$t2,0x10($sp)
 /*  f1a0204:	24850008 */ 	addiu	$a1,$a0,0x8
-/*  f1a0208:	0fc4a640 */ 	jal	func0f129900
+/*  f1a0208:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f1a020c:	24860028 */ 	addiu	$a2,$a0,0x28
 /*  f1a0210:	920b0010 */ 	lbu	$t3,0x10($s0)
 .L0f1a0214:
diff --git a/src/game/propobj.c b/src/game/propobj.c
index 0f15f9577..0209d79af 100644
--- a/src/game/propobj.c
+++ b/src/game/propobj.c
@@ -42,7 +42,7 @@
 #include "game/game_127910.h"
 #include "game/game_128f30.h"
 #include "game/game_129210.h"
-#include "game/game_129900.h"
+#include "game/explosion.h"
 #include "game/game_12d3f0.h"
 #include "game/game_12f6c0.h"
 #include "game/game_150820.h"
@@ -10862,7 +10862,7 @@ glabel func0f06f314
 /*  f06f3fc:	02002825 */ 	or	$a1,$s0,$zero
 /*  f06f400:	27a6006c */ 	addiu	$a2,$sp,0x6c
 /*  f06f404:	87a7009e */ 	lh	$a3,0x9e($sp)
-/*  f06f408:	0fc4a650 */ 	jal	func0f129940
+/*  f06f408:	0fc4a650 */ 	jal	explosionCreateComplex
 /*  f06f40c:	afa90010 */ 	sw	$t1,0x10($sp)
 /*  f06f410:	10000037 */ 	beqz	$zero,.L0f06f4f0
 /*  f06f414:	00401825 */ 	or	$v1,$v0,$zero
@@ -10919,7 +10919,7 @@ glabel func0f06f314
 /*  f06f4d8:	26050008 */ 	addiu	$a1,$s0,0x8
 /*  f06f4dc:	26060028 */ 	addiu	$a2,$s0,0x28
 /*  f06f4e0:	87a7009e */ 	lh	$a3,0x9e($sp)
-/*  f06f4e4:	0fc4a650 */ 	jal	func0f129940
+/*  f06f4e4:	0fc4a650 */ 	jal	explosionCreateComplex
 /*  f06f4e8:	afaf0010 */ 	sw	$t7,0x10($sp)
 /*  f06f4ec:	00401825 */ 	or	$v1,$v0,$zero
 .L0f06f4f0:
@@ -34094,7 +34094,7 @@ glabel func0f0841dc
 /*  f0842c4:	8fa50074 */ 	lw	$a1,0x74($sp)
 /*  f0842c8:	27a60054 */ 	addiu	$a2,$sp,0x54
 /*  f0842cc:	87a70066 */ 	lh	$a3,0x66($sp)
-/*  f0842d0:	0fc4a650 */ 	jal	func0f129940
+/*  f0842d0:	0fc4a650 */ 	jal	explosionCreateComplex
 /*  f0842d4:	afac0010 */ 	sw	$t4,0x10($sp)
 /*  f0842d8:	8e0d000c */ 	lw	$t5,0xc($s0)
 /*  f0842dc:	8fa30068 */ 	lw	$v1,0x68($sp)
@@ -34180,7 +34180,7 @@ glabel func0f0841dc
 /*  f084400:	87a70066 */ 	lh	$a3,0x66($sp)
 /*  f084404:	afa90010 */ 	sw	$t1,0x10($sp)
 /*  f084408:	24850008 */ 	addiu	$a1,$a0,0x8
-/*  f08440c:	0fc4a640 */ 	jal	func0f129900
+/*  f08440c:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f084410:	24860028 */ 	addiu	$a2,$a0,0x28
 /*  f084414:	0fc1c9bb */ 	jal	func0f0726ec
 /*  f084418:	02002025 */ 	or	$a0,$s0,$zero
@@ -34240,7 +34240,7 @@ glabel func0f0841dc
 /*  f0844e4:	27a60054 */ 	addiu	$a2,$sp,0x54
 /*  f0844e8:	8faf0078 */ 	lw	$t7,0x78($sp)
 /*  f0844ec:	24070006 */ 	addiu	$a3,$zero,0x6
-/*  f0844f0:	0fc4a640 */ 	jal	func0f129900
+/*  f0844f0:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f0844f4:	afaf0010 */ 	sw	$t7,0x10($sp)
 .L0f0844f8:
 /*  f0844f8:	0fc1a1ee */ 	jal	func0f0687b8
@@ -41792,7 +41792,7 @@ glabel var7f1aae98
 /*  f08b334:	10600007 */ 	beqz	$v1,.L0f08b354
 /*  f08b338:	24650008 */ 	addiu	$a1,$v1,0x8
 /*  f08b33c:	24660028 */ 	addiu	$a2,$v1,0x28
-/*  f08b340:	0fc4a640 */ 	jal	func0f129900
+/*  f08b340:	0fc4a640 */ 	jal	explosionCreateSimple
 /*  f08b344:	afaa0010 */ 	sw	$t2,0x10($sp)
 /*  f08b348:	02002025 */ 	or	$a0,$s0,$zero
 /*  f08b34c:	0fc1acd3 */ 	jal	setupParseObjectWithArg2False
diff --git a/src/include/constants.h b/src/include/constants.h
index 9cc989bc3..4ee347fb0 100644
--- a/src/include/constants.h
+++ b/src/include/constants.h
@@ -553,6 +553,10 @@
 #define ENTITYTYPE_DONTTURN  0x0040 // don't do a shooting animation that would change the chr's direction
 #define ENTITYTYPE_TARGET    0x0200 // aim/shoot at whatever is in the chr's `target` field
 
+#define EXPLOSIONTYPE_0 0
+#define EXPLOSIONTYPE_3 3
+#define EXPLOSIONTYPE_8 8
+
 #define EYESPYMODE_CAMSPY  0
 #define EYESPYMODE_DRUGSPY 1
 #define EYESPYMODE_BOMBSPY 2
diff --git a/src/include/game/game_129900.h b/src/include/game/explosion.h
similarity index 53%
rename from src/include/game/game_129900.h
rename to src/include/game/explosion.h
index a7a9daf3f..97664876a 100644
--- a/src/include/game/game_129900.h
+++ b/src/include/game/explosion.h
@@ -1,15 +1,15 @@
-#ifndef IN_GAME_GAME_129900_H
-#define IN_GAME_GAME_129900_H
+#ifndef IN_GAME_EXPLOSION_H
+#define IN_GAME_EXPLOSION_H
 #include <ultra64.h>
 #include "types.h"
 
-bool func0f129900(struct prop *prop, struct coord *pos, s16 *room, s16 arg3, s32 playernum);
-u32 func0f129940(void);
+bool explosionCreateSimple(struct prop *prop, struct coord *pos, s16 *rooms, s16 type, s32 playernum);
+bool explosionCreateComplex(struct prop *prop, struct coord *pos, s16 *rooms, s16 type, s32 playernum);
 u32 func0f129b08(void);
 u32 func0f129ba4(void);
 u32 func0f129c08(void);
 void alertNearbyChrsToNoise(f32 *radius, struct coord *noisepos);
-bool explosionCreate(struct prop *prop, struct coord *pos, s16 *room, s16 arg3, s32 playernum, u32 arg5, u32 arg6, u32 arg7, u32 arg8);
+bool explosionCreate(struct prop *prop, struct coord *pos, s16 *rooms, s16 type, s32 playernum, bool arg5, struct coord *arg6, s16 arg7, struct coord *arg8);
 u32 func0f12acec(void);
 u32 func0f12af5c(void);
 u32 func0f12b0e0(void);
diff --git a/src/include/lib/lib_233c0.h b/src/include/lib/lib_233c0.h
index e73811d5b..8071dc505 100644
--- a/src/include/lib/lib_233c0.h
+++ b/src/include/lib/lib_233c0.h
@@ -83,7 +83,7 @@ f32 func0002a36c(struct coord *coord, s16 *rooms, u16 *floorcol, s32 arg3);
 u32 func0002a400(void);
 u32 func0002a440(void);
 u32 func0002a4d0(void);
-u32 func0002a564(void);
+s32 func0002a564(struct coord *pos, s16 *rooms, f32 *arg2, u32 arg3, struct coord *arg4, bool *arg5);
 u32 func0002a5e4(void);
 bool func0002a684(struct coord *pos, f32 width, s16 *rooms, s32 arg3, s32 arg4, f32 arg5, f32 arg6);
 u32 func0002a6fc(void);
diff --git a/src/include/types.h b/src/include/types.h
index e8dc89554..e350c0e2e 100644
--- a/src/include/types.h
+++ b/src/include/types.h
@@ -4514,19 +4514,19 @@ struct mppreset {
 };
 
 struct explosiontype {
-	f32 rangeh;
-	f32 rangev;
-	f32 changerateh;
-	f32 changeratev;
-	f32 innersize;
-	f32 blastradius;
-	f32 damageradius;
-	u16 duration;
-	u16 propagationrate;
-	f32 flarespeed;
-	u8 smoketype;
-	u16 sound;
-	f32 damage;
+	/*0x00*/ f32 rangeh;
+	/*0x04*/ f32 rangev;
+	/*0x08*/ f32 changerateh;
+	/*0x0c*/ f32 changeratev;
+	/*0x10*/ f32 innersize;
+	/*0x14*/ f32 blastradius;
+	/*0x18*/ f32 damageradius;
+	/*0x1c*/ s16 duration;
+	/*0x1e*/ u16 propagationrate;
+	/*0x20*/ f32 flarespeed;
+	/*0x24*/ u8 smoketype;
+	/*0x26*/ u16 sound;
+	/*0x28*/ f32 damage;
 };
 
 struct smoketype {