Added rotation

1 files changed, 82 insertions, 0 deletions

diff --git a/source/toolbox.c b/source/toolbox.c
new file mode 100644
index 0000000..32042a0
--- /dev/null
+++ b/source/toolbox.c
@@ -0,0 +1,82 @@
+//
+// toolbox.c
+//
+// Tools source for obj_demo
+//
+// (20060922-20060924, cearn)
+//
+// === NOTES ===
+// * This is a _small_ set of typedefs, #defines and inlines that can
+//   be found in tonclib, and might not represent the
+//   final forms.
+
+#include "../include/toolbox.h"
+
+// === (tonc_core.c) ==================================================
+
+u16 __key_curr= 0, __key_prev= 0;
+
+// === (tonc_oam.c) ===================================================
+
+void oam_init(OBJ_ATTR *obj, u32 count)
+{
+	u32 nn= count;
+	u32 *dst= (u32*)obj;
+
+	// Hide each object
+	while(nn--)
+	{
+		*dst++= ATTR0_HIDE;
+		*dst++= 0;
+	}
+	// init oam
+	oam_copy(oam_mem, obj, count);
+}
+
+void oam_copy(OBJ_ATTR *dst, const OBJ_ATTR *src, u32 count)
+{
+
+// NOTE: while struct-copying is the Right Thing to do here,
+//   there's a strange bug in DKP that sometimes makes it not work
+//   If you see problems, just use the word-copy version.
+#if 1
+	while(count--)
+		*dst++ = *src++;
+#else
+	u32 *dstw= (u32*)dst, *srcw= (u32*)src;
+	while(count--)
+	{
+		*dstw++ = *srcw++;
+		*dstw++ = *srcw++;
+	}
+#endif
+
+}
+
+void obj_copy(OBJ_ATTR *dst, const OBJ_ATTR *src, u32 count)
+{
+	int ii;
+	for(ii=0; ii<count; ii++)
+	{
+		dst[ii].attr0= src[ii].attr0;
+		dst[ii].attr1= src[ii].attr1;
+		dst[ii].attr2= src[ii].attr2;
+	}
+}
+
+void obj_affine_copy (OBJ_AFFINE *dst, const OBJ_AFFINE *src, u32 count) {
+	// Copy affine attributes from one pointer to another
+	for (int i = 0; i < count; i++) {
+		dst->pa = src->pa; dst->pb = src->pb;
+		dst->pc = src->pc; dst->pd = src->pd;
+
+		dst++;
+		src++;
+	}
+}
+
+void obj_affine_identity(OBJ_AFFINE *aff) {
+	// Make a pointer point to a identity affine matrix
+	aff->pa = 1 << 8; aff->pb =      0;
+	aff->pc = 0     ; aff->pd = 1 << 8; 
+}