[Maintenance] [th04/th05] Demo Play: Move OP return code into the header

Part of P0258, funded by [Anonymous] and Blue Bolt.

th04/main/demo.cpp

@@ -17,7 +17,9 @@
 
 void near DemoPlay(void)
 {
-	extern const char DEMO_OP[];
+	#undef BINARY_OP
+	#define BINARY_OP DEMOPLAY_BINARY_OP
+	extern const char BINARY_OP[];
 
 	#if (GAME == 5)
 		size_t shift_offset = (resident->demo_num <= 4) ? DEMO_N : DEMO_N_EXTRA;
@@ -40,16 +42,5 @@ void near DemoPlay(void)
 			return;
 		}
 	}
-	HMem<uint8_t>::free(DemoBuf);
-	palette_black_out((GAME == 5) ? 8 : 10);
-	/* TODO: Replace with the decompiled call
-	 * 	GameExecl(DEMO_OP);
-	 * once that function is part of the same segment */
-	_asm {
-		push	ds;
-		push	offset DEMO_OP;
-		nop;
-		push 	cs;
-		call	near ptr GameExecl;
-	}
+	demo_end();
 }

th04/main/demo.hpp

@@ -15,5 +15,20 @@
 // buffer.
 extern uint8_t *DemoBuf; /* ZUN symbol [MAGNet2010] */
 
+#define demo_end() { \
+	HMem<uint8_t>::free(DemoBuf); \
+	palette_black_out((GAME == 5) ? 8 : 10); \
+	/* TODO: Replace with the decompiled call \
+	 * 	GameExecl(BINARY_OP); \
+	 * once that function is only called from the same segment */ \
+	_asm { \
+		push	ds; \
+		push	offset BINARY_OP; \
+		nop; \
+		push 	cs; \
+		call	near ptr GameExecl; \
+	} \
+}
+
 // Assigns the next frame out of [DemoBuf] to [key_det] and [shiftkey].
 void near DemoPlay();

th04/main/demo[data].asm

@@ -1,2 +1,2 @@
-public _DEMO_OP
-_DEMO_OP db 'op',0
+public _DEMOPLAY_BINARY_OP
+_DEMOPLAY_BINARY_OP db 'op',0

th04/shiftjis/fns.hpp

@@ -1,3 +1,5 @@
+#define BINARY_OP	"op"
+
 #define EYECATCH_FN_FORMAT	"eye0.cdg"
 
 #define FACESET_REIMU_FN 	"KAO0.cd2"