From e5087f0757418c8b221cfde0364f0c3d031bdc73 Mon Sep 17 00:00:00 2001
From: kichikuou <KichikuouChrome@gmail.com>
Date: Fri, 20 Mar 2026 11:30:37 +0900
Subject: [PATCH] PartsEngine: Implement PartsFunc 103 (GetPartsCGSurfaceArea)

---
 include/parts.h       |  1 +
 src/hll/PartsEngine.c |  4 ++++
 src/parts/parts.c     | 12 ++++++++++++
 3 files changed, 17 insertions(+)

diff --git a/include/parts.h b/include/parts.h
index bb5ff93..06618b0 100644
--- a/include/parts.h
+++ b/include/parts.h
@@ -37,6 +37,7 @@ bool PE_SetPartsCG_by_string_index(int parts_no, struct string *cg_no,
 		int sprite_deform, int state);
 void PE_GetPartsCGName(int parts_no, struct string **cg_name, int state);
 bool PE_SetPartsCGSurfaceArea(int parts_no, int x, int y, int w, int h, int state);
+void PE_GetPartsCGSurfaceArea(int parts_no, int *x, int *y, int *w, int *h, int state);
 int PE_GetPartsCGNumber(int parts_no, int state);
 bool PE_SetLoopCG_by_index(int parts_no, int cg_no, int nr_frames, int frame_time, int state);
 bool PE_SetLoopCG(int parts_no, struct string *cg_name, int start_no, int nr_frames,
diff --git a/src/hll/PartsEngine.c b/src/hll/PartsEngine.c
index 8ee99b1..53e5ffa 100644
--- a/src/hll/PartsEngine.c
+++ b/src/hll/PartsEngine.c
@@ -127,6 +127,10 @@ static int PartsEngine_PartsFunc(int func_id, struct page **array_int,
 		REQUIRE_INTS(1);
 		ints[0].i = PE_get_system_controller();
 		return 1;
+	case 103:  // void GetPartsCGSurfaceArea(int parts_no, int *x, int *y, int *w, int *h, int state)
+		REQUIRE_INTS(6);
+		PE_GetPartsCGSurfaceArea(ints[0].i, &ints[1].i, &ints[2].i, &ints[3].i, &ints[4].i, ints[5].i);
+		return 1;
 	case 162:  // bool InitPartsMovie(int parts_no, int width, int height, int bg_r, int bg_g, int bg_b, int state)
 		REQUIRE_INTS(8);
 		ints[7].i = PE_init_parts_movie(ints[0].i, ints[1].i, ints[2].i, ints[3].i, ints[4].i, ints[5].i, ints[6].i);
diff --git a/src/parts/parts.c b/src/parts/parts.c
index 0a8805d..c2b179d 100644
--- a/src/parts/parts.c
+++ b/src/parts/parts.c
@@ -1227,6 +1227,18 @@ bool PE_SetPartsCGSurfaceArea(int parts_no, int x, int y, int w, int h, int stat
 	return true;
 }
 
+void PE_GetPartsCGSurfaceArea(int parts_no, int *x, int *y, int *w, int *h, int state)
+{
+	if (!parts_state_valid(--state))
+		return;
+
+	struct parts_cg *cg = parts_get_cg(parts_get(parts_no), state);
+	*x = cg->common.surface_area.x;
+	*y = cg->common.surface_area.y;
+	*w = cg->common.surface_area.w;
+	*h = cg->common.surface_area.h;
+}
+
 int PE_GetPartsCGNumber(int parts_no, int state)
 {
 	if (!parts_state_valid(--state)) {