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//
// toolbox.h:
//
// Tools header for obj_demo
//
// (20060211-20060924, 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.
#ifndef TOOLBOX_H
#define TOOLBOX_H
#include "types.h" // (tonc_types.h)
#include "memmap.h" // (tonc_memmap.h)
#include "memdef.h" // (tonc_memdef.h)
#include "input.h" // (tonc_input.h)
// === (tonc_core.h) ==================================================
// tribool: 1 if {plus} on, -1 if {minus} on, 0 if {plus}=={minus}
INLINE int bit_tribool(u32 x, int plus, int minus);
extern COLOR *vid_page;
extern u16 __key_curr, __key_prev;
// === (tonc_video.h) =================================================
// --- sizes ---
#define SCREEN_WIDTH 240
#define SCREEN_HEIGHT 160
#define M3_WIDTH SCREEN_WIDTH
#define M3_HEIGHT SCREEN_HEIGHT
#define M4_WIDTH SCREEN_WIDTH
#define M4_HEIGHT SCREEN_HEIGHT
#define M5_WIDTH 160
#define M5_HEIGHT 128
// --- colors ---
#define CLR_BLACK 0x0000
#define CLR_RED 0x001F
#define CLR_LIME 0x03E0
#define CLR_YELLOW 0x03FF
#define CLR_BLUE 0x7C00
#define CLR_MAG 0x7C1F
#define CLR_CYAN 0x7FE0
#define CLR_WHITE 0x7FFF
INLINE COLOR RGB15(u32 red, u32 green, u32 blue);
INLINE void vid_vsync();
u16 *vid_flip();
// --- Objects ---
void oam_init(OBJ_ATTR *obj, u32 count);
void oam_copy(OBJ_ATTR *dst, const OBJ_ATTR *src, u32 count);
INLINE OBJ_ATTR *obj_set_attr(OBJ_ATTR *obj, u16 a0, u16 a1, u16 a2);
INLINE void obj_set_pos(OBJ_ATTR *obj, int x, int y);
INLINE void obj_hide(OBJ_ATTR *oatr);
INLINE void obj_unhide(OBJ_ATTR *obj, u16 mode);
void obj_copy(OBJ_ATTR *dst, const OBJ_ATTR *src, u32 count);
void obj_affine_copy(OBJ_AFFINE *dst, const OBJ_AFFINE *src, u32 count);
void obj_affine_identity(OBJ_AFFINE *aff);
// === INLINES ========================================================
// --- (tonc_core.h) --------------------------------------------------
// --- Simple bit macros ---
#define BIT(n) ( 1<<(n) )
#define BIT_SHIFT(a, n) ( (a)<<(n) )
#define BIT_SET(word, flag) ( word |= (flag) )
#define BIT_CLEAR(word, flag) ( word &= ~(flag) )
#define BIT_FLIP(word, flag) ( word ^= (flag) )
#define BIT_EQ(word, flag) ( ((word)&(flag)) == (flag) )
// some EVIL bit-field operations, >:)
// _x needs shifting
#define BFN_PREP(x, name) ( ((x)<<name##_SHIFT) & name##_MASK )
#define BFN_GET(y, name) ( ((y) & name##_MASK)>>name##_SHIFT )
#define BFN_SET(y, x, name) (y = ((y)&~name##_MASK) | BFN_PREP(x,name) )
// x already shifted
#define BFN_PREP2(x, name) ( (x) & name##_MASK )
#define BFN_GET2(y, name) ( (y) & name##_MASK )
#define BFN_SET2(y, x, name) (y = ((y)&~name##_MASK) | BFN_PREP2(x,name) )
//! Gives a tribool (-1, 0, or +1) depending on the state of some bits.
/*! Looks at the \a plus and \a minus bits of \a flags, and subtracts
* their status to give a +1, -1 or 0 result. Useful for direction flags.
* \param plus Bit number for positive result
* \param minus Bit number for negative result
* \return <b>+1</b> if \a plus bit is set but \a minus bit isn't<br>
* <b>-1</b> if \a minus bit is set and \a plus bit isn't</br>
* <b>0</b> if neither or both are set.
*/
INLINE int bit_tribool(u32 flags, int plus, int minus)
{ return ((flags>>plus)&1) - ((flags>>minus)&1); }
// --- (tonc_video.h) -------------------------------------------------
//! Wait for next VBlank
INLINE void vid_vsync()
{
while(REG_VCOUNT >= 160); // wait till VDraw
while(REG_VCOUNT < 160); // wait till VBlank
}
//! Create a 15bit BGR color.
INLINE COLOR RGB15(u32 red, u32 green, u32 blue)
{ return red | (green<<5) | (blue<<10); }
// --- Objects ---
//! Set the attributes of an object.
INLINE OBJ_ATTR *obj_set_attr(OBJ_ATTR *obj, u16 a0, u16 a1, u16 a2)
{
obj->attr0= a0; obj->attr1= a1; obj->attr2= a2;
return obj;
}
//! Set the position of \a obj
INLINE void obj_set_pos(OBJ_ATTR *obj, int x, int y)
{
BFN_SET(obj->attr0, y, ATTR0_Y);
BFN_SET(obj->attr1, x, ATTR1_X);
}
//! Hide an object.
INLINE void obj_hide(OBJ_ATTR *obj)
{ BFN_SET2(obj->attr0, ATTR0_HIDE, ATTR0_MODE); }
//! Unhide an object.
/*! \param obj Object to unhide.
* \param mode Object mode to unhide to. Necessary because this affects
* the affine-ness of the object.
*/
INLINE void obj_unhide(OBJ_ATTR *obj, u16 mode)
{ BFN_SET2(obj->attr0, mode, ATTR0_MODE); }
#endif // TOOLBOX_H
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