parts: Implement PartsFunc 112 (GetText)

include/parts.h

@@ -254,6 +254,7 @@ void PE_PauseMotion(bool pause);
 
 // text.c
 bool PE_SetText(int parts_no, struct string *text, int state);
+struct string *PE_GetText(int parts_no, int state);
 bool PE_AddPartsText(int parts_no, struct string *text, int state);
 bool PE_SetPartsTextSurfaceArea(int parts_no, int x, int y, int w, int h, int state);
 bool PE_SetFont(int parts_no, int type, int size, int r, int g, int b, float bold_weight, int edge_r, int edge_g, int edge_b, float edge_weight, int state);

src/hll/PartsEngine.c

@@ -17,6 +17,7 @@
 #include <assert.h>
 
 #include "system4/ain.h"
+#include "system4/string.h"
 
 #include "vm/heap.h"
 #include "vm/page.h"
@@ -338,6 +339,16 @@ static int PartsEngine_PartsFunc(int func_id, struct page **array_int,
 		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 112: {  // string GetText(int parts_no, int state)
+		REQUIRE_INTS(2);
+		REQUIRE_STRINGS(1);
+		struct string *text = PE_GetText(ints[0].i, ints[1].i);
+		if (text) {
+			heap_string_assign(strings[0].i, text);
+			free_string(text);
+		}
+		return 1;
+	}
 	case 162:  // AddConstructProcess(ArrayInt[32], ArrayFloat[2], ArrayString[2])
 		REQUIRE_INTS(32);
 		REQUIRE_FLOATS(2);

src/parts/text.c

@@ -169,6 +169,14 @@ bool PE_SetText(int parts_no, struct string *text, int state)
 	return true;
 }
 
+struct string *PE_GetText(int parts_no, int state)
+{
+	if (!parts_state_valid(--state))
+		return NULL;
+
+	return parts_text_get(parts_get_text(parts_get(parts_no), state));
+}
+
 bool PE_AddPartsText(int parts_no, struct string *text, int state)
 {
 	if (!parts_state_valid(--state))