diff --git a/src/game/chr/chr.c b/src/game/chr/chr.c
index 99a415386..366324469 100644
--- a/src/game/chr/chr.c
+++ b/src/game/chr/chr.c
@@ -32060,7 +32060,7 @@ glabel func0f039a18
 
 bool chrIsDead(struct chrdata *chr)
 {
-	if (!chr || chr->actiontype == 4 || chr->actiontype == 5) {
+	if (!chr || chr->actiontype == ACT_DIE || chr->actiontype == ACT_DEAD) {
 		return true;
 	}
 
@@ -35437,14 +35437,14 @@ glabel func0f03cb74
 
 void func0f03ccdc(struct chrdata *chr)
 {
-	if (chr->actiontype == 5 || chr->actiontype == 0x1f) {
+	if (chr->actiontype == ACT_DEAD || chr->actiontype == ACT_31) {
 		chr->unk02c = 1;
 	}
 }
 
 void func0f03cd04(struct chrdata *chr)
 {
-	if (chr->actiontype == 5) {
+	if (chr->actiontype == ACT_DEAD) {
 		chr->unk030 = 1;
 	}
 }
diff --git a/src/game/chr/chrai.c b/src/game/chr/chrai.c
index b6b59f0d1..18a2eb578 100644
--- a/src/game/chr/chrai.c
+++ b/src/game/chr/chrai.c
@@ -114,13 +114,13 @@ void chraiExecute(void *entity, s32 entity_type)
 					&& chrHasFlag(g_Vars.chrdata, 0x00000400, BANK_1) == 0
 					&& chrHasFlag(g_Vars.chrdata, 0x00010000, BANK_0) == 0
 					&& ailistFindById(g_Vars.chrdata->aishootingatmelist) != g_Vars.chrdata->ailist
-					&& g_Vars.chrdata->actiontype != 8
-					&& g_Vars.chrdata->actiontype != 9
-					&& g_Vars.chrdata->actiontype != 4
-					&& g_Vars.chrdata->actiontype != 5
-					&& g_Vars.chrdata->actiontype != 6
-					&& g_Vars.chrdata->actiontype != 7
-					&& g_Vars.chrdata->actiontype != 10) {
+					&& g_Vars.chrdata->actiontype != ACT_ATTACK
+					&& g_Vars.chrdata->actiontype != ACT_ATTACKWALK
+					&& g_Vars.chrdata->actiontype != ACT_DIE
+					&& g_Vars.chrdata->actiontype != ACT_DEAD
+					&& g_Vars.chrdata->actiontype != ACT_ARGH
+					&& g_Vars.chrdata->actiontype != ACT_PREARGH
+					&& g_Vars.chrdata->actiontype != ACT_ATTACKROLL) {
 				// Set shooting at me list
 				g_Vars.ailist = ailistFindById(g_Vars.chrdata->aishootingatmelist);
 				g_Vars.aioffset = 0;
@@ -141,9 +141,9 @@ void chraiExecute(void *entity, s32 entity_type)
 			g_Vars.chrdata->darkroomthing = 0;
 
 			if (g_Vars.chrdata->aidarkroomlist >= 0
-					&& g_Vars.chrdata->actiontype != 4
-					&& g_Vars.chrdata->actiontype != 5
-					&& g_Vars.chrdata->actiontype != 6) {
+					&& g_Vars.chrdata->actiontype != ACT_DIE
+					&& g_Vars.chrdata->actiontype != ACT_DEAD
+					&& g_Vars.chrdata->actiontype != ACT_ARGH) {
 				// Set darkroom list
 				chrSetFlags(g_Vars.chrdata, 0x00000400, BANK_1);
 				chrSetFlags(g_Vars.chrdata, 0x10000000, BANK_1);
diff --git a/src/game/chr/chraicommands.c b/src/game/chr/chraicommands.c
index f1eeec77b..5129f98ee 100644
--- a/src/game/chr/chraicommands.c
+++ b/src/game/chr/chraicommands.c
@@ -630,7 +630,7 @@ glabel ai000b
  */
 bool aiIfIdle(void)
 {
-	if (g_Vars.chrdata->actiontype == 3) {
+	if (g_Vars.chrdata->actiontype == ACT_ANIM) {
 		u8 *cmd = g_Vars.ailist + g_Vars.aioffset;
 		g_Vars.aioffset = chraiGoToLabel(g_Vars.ailist, g_Vars.aioffset, cmd[2]);
 	} else {
@@ -715,7 +715,7 @@ bool aiIfChrDeathAnimationFinished(void)
 			u32 playernum = posGetPlayerNum(chr->pos);
 			pass = g_Vars.players[playernum]->isdead;
 		} else {
-			pass = (chr->actiontype == 5);
+			pass = (chr->actiontype == ACT_DEAD);
 		}
 	}
 
@@ -737,7 +737,7 @@ bool aiIfChrUnloaded(void)
 	struct chrdata *chr = chrFindById(g_Vars.chrdata, cmd[2]);
 
 	if ((!chr || !chr->pos || chr->pos->type != POSITIONTYPE_PLAYER) &&
-			(!chr || !chr->unk020 || chr->actiontype == 0x1f || chr->actiontype == 0x1e || chr->actiontype == 0x20)) {
+			(!chr || !chr->unk020 || chr->actiontype == ACT_31 || chr->actiontype == ACT_30 || chr->actiontype == ACT_32)) {
 		g_Vars.aioffset = chraiGoToLabel(g_Vars.ailist, g_Vars.aioffset, cmd[3]);
 	} else {
 		g_Vars.aioffset += 4;
@@ -912,7 +912,7 @@ bool ai00f0(void)
 {
 	u8 *cmd = g_Vars.ailist + g_Vars.aioffset;
 
-	if (g_Vars.chrdata->actiontype == 8 && !g_Vars.chrdata->unk058 && g_Vars.chrdata->unk04c & 0x40) {
+	if (g_Vars.chrdata->actiontype == ACT_ATTACK && !g_Vars.chrdata->unk058 && g_Vars.chrdata->unk04c & 0x40) {
 		g_Vars.aioffset = chraiGoToLabel(g_Vars.ailist, g_Vars.aioffset, cmd[2]);
 	} else {
 		g_Vars.aioffset += 3;
@@ -928,7 +928,7 @@ bool ai00f1(void)
 {
 	u8 *cmd = g_Vars.ailist + g_Vars.aioffset;
 
-	if (g_Vars.chrdata->actiontype == 8) {
+	if (g_Vars.chrdata->actiontype == ACT_ATTACK) {
 		g_Vars.aioffset = chraiGoToLabel(g_Vars.ailist, g_Vars.aioffset, cmd[2]);
 	} else {
 		g_Vars.aioffset += 3;
@@ -1566,7 +1566,7 @@ bool aiIfPathStarted(void)
 {
 	u8 *cmd = g_Vars.ailist + g_Vars.aioffset;
 
-	if (g_Vars.chrdata->actiontype == 0x0e || (g_Vars.chrdata->actiontype == 0x0f && (g_Vars.chrdata->unk065 & 8))) {
+	if (g_Vars.chrdata->actiontype == ACT_PATROL || (g_Vars.chrdata->actiontype == ACT_GOPOS && (g_Vars.chrdata->unk065 & 8))) {
 		g_Vars.aioffset = chraiGoToLabel(g_Vars.ailist, g_Vars.aioffset, cmd[2]);
 	} else {
 		g_Vars.aioffset += 3;
@@ -11049,7 +11049,7 @@ glabel ai0137
 //			struct chrdata *chr = chrFindByLiteralId(*chrnums);
 //
 //			if (chr && chr->unk020 && chrIsDead(chr) == false &&
-//					chr->actiontype != 5 &&
+//					chr->actiontype != ACT_DEAD &&
 //					func0f04aa8c(g_Vars.chrdata, chr, 1) &&
 //					g_Vars.chrdata->chrnum != chr->chrnum &&
 //					chrGetDistanceToChr(g_Vars.chrdata, chr->chrnum) < 3500 &&
@@ -11104,11 +11104,11 @@ bool aiSetChrPresetToUnalertedTeammate(void)
 
 		if (cmd[3] == 0 && chr && chr->unk020 &&
 				chrIsDead(chr) == false &&
-				chr->actiontype != 5 &&
-				chr->actiontype != 4 &&
-				chr->actiontype != 0x1f &&
-				chr->actiontype != 0x1e &&
-				chr->actiontype != 0x20 &&
+				chr->actiontype != ACT_DEAD &&
+				chr->actiontype != ACT_DIE &&
+				chr->actiontype != ACT_31 &&
+				chr->actiontype != ACT_30 &&
+				chr->actiontype != ACT_32 &&
 				chr->alertness < 100 &&
 				(g_Vars.chrdata->squadron == chr->squadron || g_Vars.chrdata->squadron == 0xff) &&
 				g_Vars.chrdata->chrnum != chr->chrnum) {
@@ -14837,7 +14837,7 @@ bool aiChrKill(void)
 	struct chrdata *chr = chrFindById(g_Vars.chrdata, cmd[2]);
 
 	if (chr) {
-		chr->actiontype = 5;
+		chr->actiontype = ACT_DEAD;
 		chr->unk038 = -1;
 		chr->unk02c = 0;
 		chr->unk030 = 0;
diff --git a/src/include/constants.h b/src/include/constants.h
index c07325a38..c2124dcdb 100644
--- a/src/include/constants.h
+++ b/src/include/constants.h
@@ -4,6 +4,68 @@
 #define false 0
 #define true  1
 
+// These actions are assigned to chr->actiontype
+#define ACT_STAND      1
+#define ACT_KNEEL      2
+#define ACT_ANIM       3
+#define ACT_DIE        4
+#define ACT_DEAD       5
+#define ACT_ARGH       6
+#define ACT_PREARGH    7
+#define ACT_ATTACK     8
+#define ACT_ATTACKWALK 9
+#define ACT_ATTACKROLL 10
+#define ACT_11         11
+#define ACT_12         12
+#define ACT_13         13
+#define ACT_PATROL     14
+#define ACT_GOPOS      15
+#define ACT_SURRENDER  16
+#define ACT_17         17
+#define ACT_18         18
+#define ACT_19         19
+#define ACT_20         20
+#define ACT_21         21
+#define ACT_22         22
+#define ACT_23         23
+#define ACT_24         24
+#define ACT_25         25
+#define ACT_26         26
+#define ACT_27         27
+#define ACT_28         28
+#define ACT_29         29
+#define ACT_30         30
+#define ACT_31         31
+#define ACT_32         32
+#define ACT_33         33
+
+// These numbers aren't right, but the names are here for reference
+// and the order of them might be useful too.
+//#define ACT_RUNPOS           11
+//#define ACT_PATROL           12
+//#define ACT_GOPOS            13
+//#define ACT_SURRENDER        14
+//#define ACT_LOOKATTARGET     15
+//#define ACT_SURPRISED        16
+//#define ACT_STARTALARM       17
+//#define ACT_THROWGRENADE     18
+//#define ACT_TURNDIR          19
+//#define ACT_TEST             20
+//#define ACT_BONDINTRO        21
+//#define ACT_BONDDIE          22
+//#define ACT_BONDMULTI        23
+//#define ACT_NULL             24
+//#define ACT_BOT_ATTACKSTAND  25
+//#define ACT_BOT_ATTACKKNEEL  26
+//#define ACT_BOT_ATTACKSTRAFE 27
+//#define ACT_DRUGGEDDROP      28
+//#define ACT_DRUGGEDKO        29
+//#define ACT_DRUGGEDCOMINGUP  30
+//#define ACT_ATTACKAMOUNT     31
+//#define ACT_ROBOTATTACK      32
+//#define ACT_SKJUMP           33
+
+// These actions are assigned to chr->myaction
 #define ACTION_SCAN               0x01
 #define ACTION_UNDER_COVER        0x02
 #define ACTION_GRENADE_STOP       0x03