Set up the Write Gather Pipe as a union

Author: Zephiles

ttyd-tools/rel/include/gc/ppc.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <cstdint>
+
+namespace gc::ppc {
+
+extern "C" {
+
+typedef union WriteGatherPipe
+{
+	int8_t 		s8;
+	int16_t 	s16;
+	int32_t 	s32;
+	int64_t 	s64;
+	uint8_t 	u8;
+	uint16_t 	u16;
+	uint32_t 	u32;
+	uint64_t 	u64;
+	float 		f32;
+	double 		f64;
+} WriteGatherPipe;
+
+extern volatile WriteGatherPipe writeGatherPipe;
+
+}
+
+}

ttyd-tools/rel/include/ttyd.eu.lst

@@ -2005,4 +2005,8 @@
 
 // item_data.o
 // data
-8031C638:itemDataTable
+8031C638:itemDataTable
+
+// ppc
+// data
+CC008000:writeGatherPipe

ttyd-tools/rel/include/ttyd.jp.lst

@@ -2001,4 +2001,8 @@
 
 // item_data.o
 // data
-8030EE58:itemDataTable
+8030EE58:itemDataTable
+
+// ppc
+// data
+CC008000:writeGatherPipe

ttyd-tools/rel/include/ttyd.us.lst

@@ -2002,4 +2002,8 @@
 
 // item_data.o
 // data
-803108A8:itemDataTable
+803108A8:itemDataTable
+
+// ppc
+// data
+CC008000:writeGatherPipe

ttyd-tools/rel/source/draw.cpp

@@ -7,6 +7,7 @@
 #include "memorywatch.h"
 
 #include <gc/gx.h>
+#include <gc/ppc.h>
 #include <ttyd/battle_unit.h>
 #include <ttyd/fontmgr.h>
 #include <ttyd/battle_disp.h>
@@ -42,9 +43,6 @@ void drawArtAttackHitboxes()
 	uint8_t HSVA[4];
 	*reinterpret_cast<uint32_t *>(&HSVA) = 0x00FFCCFF; // RGBA value is 0xCC0000FF
 
-	// Get the address of the write gather pipe, and handle the value at the address as a float
-	volatile float *WriteGatherPipe = reinterpret_cast<float *>(0xCC008000);
-	
 	for (uint32_t Slot = 0; Slot < 64; Slot++)
 	{
 		void *BattleUnitPtr = getActorPointer(Slot);
@@ -193,13 +191,13 @@ void drawArtAttackHitboxes()
 			// Draw the line from corner 1 to corner 2
 			gc::gx::GXBegin(gc::gx::GXPrimitive::GX_LINES, gc::gx::GXVtxFmt::GX_VTXFMT0, 2);
 
-			*WriteGatherPipe = ScreenPointOutLineStart[0];
-			*WriteGatherPipe = ScreenPointOutLineStart[1];
-			*WriteGatherPipe = 0;
+			gc::ppc::writeGatherPipe.f32 = ScreenPointOutLineStart[0];
+			gc::ppc::writeGatherPipe.f32 = ScreenPointOutLineStart[1];
+			gc::ppc::writeGatherPipe.f32 = 0;
 
-			*WriteGatherPipe = ScreenPointOutLineEnd[0];
-			*WriteGatherPipe = ScreenPointOutLineEnd[1];
-			*WriteGatherPipe = 0;
+			gc::ppc::writeGatherPipe.f32 = ScreenPointOutLineEnd[0];
+			gc::ppc::writeGatherPipe.f32 = ScreenPointOutLineEnd[1];
+			gc::ppc::writeGatherPipe.f32 = 0;
 		}
 	}
 }