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