From: Lukas Krickl <lukas@krickl.dev>
Date: Fri, 15 Aug 2025 04:20:50 +0000 (+0200)
Subject: unit: Added unit fine at
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=81745e84197f7433bdced6268ee21ce95bdcef48;p=gbrg%2F.git

unit: Added unit fine at
---

diff --git a/src/unit.s b/src/unit.s
index 7fc1d74..d3b8f48 100644
--- a/src/unit.s
+++ b/src/unit.s
@@ -797,6 +797,43 @@ unit_set_draw:
 	;	returns:
 	;		hl: unit ptr or NULL if not found
 unit_find_at:
+	ld hl, p0_units
+
+	; a = loop counter
+	ld a, UNITS_MAX
+
+@loop:
+		push af
+		push hl
+
+		ld de, act_pos_y
+		add hl, de 
+		; hl = y pos
+
+		; check if positions match	
+		ld a, [hl+]
+		cp a, b ; does y match?
+		jr nz, @no_match REL
+
+		ld a, [hl]
+		cp a, c ; does x match?
+		jp z, @found 
+
+@no_match:
+		pop hl ; back to start
+		pop af ; restore loop counter
+		; next unit
+		ld de, act_size
+		add hl, de
+		dec a
+	jp nz, @loop
+	
+	ldnull hl 
+	ret
+
+@found:
+	pop hl ; hl = start of found act
+	pop af ; af was also saved so we need to pop 
 	ret
 
 st_unit_idle: