From: Lukas Krickl <lukas@krickl.dev>
Date: Sat, 17 Jan 2026 15:44:02 +0000 (+0100)
Subject: attr: added hp calculation
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=d5f2cb9d688f43de7f8981522464b5482705895b;p=gbrg%2F.git

attr: added hp calculation
---

diff --git a/src/attributes.s b/src/attributes.s
index 335e788..bf753fc 100644
--- a/src/attributes.s
+++ b/src/attributes.s
@@ -1,10 +1,58 @@
 
+	; generall attributes are either returned
+	; in a (8 bit stats) or bc (16 bit stats)
+
 attr_null:
 attrdef 0, 0, 0, 0, 0
 
 attr_bat:
 attrdef 1, 0, 0, 0, 0
 
+	; gets the max hp for an actor
+	; hp formula:
+	;		4*stam
+	; inputs:
+	;		de: actor
+	;	returns:
+	;		bc: max hp
+act_attr_get_max_hp:
+	ld a, [de]
+	cp a, ACT_T_PLAYER
+	jp nz, @npc ; not a player
+	
+	
+
+@npc:
+	call act_attr_get_stam
+	ld hl, 0
+	ld de, 4
+@mul:
+		add hl, de
+		dec a
+		jr nz, @mul REL
+
+	push hl
+	pop bc ; bc = hp max
+	
+	ret
+
+	; get actor stamina
+	; inputs:
+	;		de: actor
+	;	returns:
+	;		a: stamina
+act_attr_get_stam:
+	ld a, [de]
+	cp a, ACT_T_PLAYER
+	jp nz, @npc ; not a player
+	
+@npc:	
+	call act_load_attr_table
+	ld hl, attr_stam
+	add hl, bc
+	ld a, [hl] ; a = stamina
+	ret
+
 	; gets strength attribute
 	; of a given actor
 	; inputs:
diff --git a/src/defs.s b/src/defs.s
index 61ae288..1f9e0d9 100644
--- a/src/defs.s
+++ b/src/defs.s
@@ -64,6 +64,7 @@
 .de act_p0, 1
 	; state parameter
 .de act_state, 1
+	; hp/mp stored in BE
 .de act_hp, 2
 .de act_mp, 2
 	; currently active buff id
diff --git a/src/player.s b/src/player.s
index 97eafe4..1202ccd 100644
--- a/src/player.s
+++ b/src/player.s
@@ -49,6 +49,15 @@ player_init:
 	; set default view
 	ld a, 3
 	ld [player_viewradius], a
+
+	; set current hp
+	ld de, player
+	call act_attr_get_max_hp
+	ld a, b
+	ld [player+act_hp], a
+	ld a, c
+	ld [player+act_hp+1], a
+
 	
 	ret