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#include "global.h"
#include "input.h"
#include "bg.h"
extern u16 gRawKeyInput;
extern struct BGControlStruct gBG0Control;
extern struct BGControlStruct gBG1Control;
extern struct BGControlStruct gBG2Control;
extern struct BGControlStruct gBG3Control;
extern u8 gBldAlpha_CoeffA;
extern u8 gBldAlpha_CoeffB;
extern u16 gBldAlpha;
extern u8 gUnknown_202D7FE;
void ReadKeyInput(struct Inputs *r0)
{
u16 keyInput = REG_KEYINPUT ^ KEYS_MASK;
r0->held = 0;
if((keyInput & DPAD_UP) != 0)
r0->held = DPAD_UP;
if((keyInput & DPAD_DOWN) != 0)
r0->held |= DPAD_DOWN;
if((keyInput & DPAD_LEFT) != 0)
r0->held |= DPAD_LEFT;
if((keyInput & DPAD_RIGHT) != 0)
r0->held |= DPAD_RIGHT;
if((keyInput & A_BUTTON) != 0)
r0->held |= A_BUTTON;
if((keyInput & B_BUTTON) != 0)
r0->held |= B_BUTTON;
if((keyInput & START_BUTTON) != 0)
r0->held |= START_BUTTON;
if((keyInput & SELECT_BUTTON) != 0)
r0->held |= SELECT_BUTTON;
if((keyInput & R_BUTTON) != 0)
r0->held |= R_BUTTON;
if((keyInput & L_BUTTON) != 0)
r0->held |= L_BUTTON;
gRawKeyInput = keyInput;
}
void SetBldAlphaReg(s32 lowAlpha, s32 highAlpha)
{
if(lowAlpha < 0)
{
lowAlpha = 0;
}
else if(lowAlpha > 16)
{
lowAlpha = 16;
}
if(highAlpha < 0)
{
highAlpha = 0;
}
else if(highAlpha > 16)
{
highAlpha = 16;
}
gBldAlpha_CoeffA = lowAlpha;
gBldAlpha_CoeffB = highAlpha;
gBldAlpha = BLDALPHA_BLEND1(gBldAlpha_CoeffA, gBldAlpha_CoeffB);
}
void SetBG0RegOffsets(s32 xoffset, s32 yoffset)
{
gBG0Control.hofs = xoffset;
gBG0Control.vofs = yoffset;
}
void SetBG1RegOffsets(s32 xoffset, s32 yoffset)
{
gBG1Control.hofs = xoffset;
gBG1Control.vofs = yoffset;
}
void SetBG2RegOffsets(s32 xoffset, s32 yoffset)
{
gBG2Control.hofs = xoffset;
gBG2Control.vofs = yoffset;
}
void SetBG3RegOffsets(s32 xoffset, s32 yoffset)
{
gBG3Control.hofs = xoffset;
gBG3Control.vofs = yoffset;
}
void SetBGRegOffsets(s32 reg, u32 xoffset, s32 yoffset)
{
switch (reg) {
default:
case 0: return SetBG0RegOffsets(xoffset, yoffset);
case 1: return SetBG1RegOffsets(xoffset, yoffset);
case 2: return SetBG2RegOffsets(xoffset, yoffset);
case 3: return SetBG3RegOffsets(xoffset, yoffset);
}
}
void SetBGRegXOffset(s32 reg, s32 offset)
{
switch (reg) {
default:
case 0:
gBG0Control.hofs = offset;
break;
case 1:
gBG1Control.hofs = offset;
break;
case 2:
gBG2Control.hofs = offset;
break;
case 3:
gBG3Control.hofs = offset;
break;
}
}
void SetBGRegYOffset(s32 reg, s32 offset)
{
switch (reg) {
default:
case 0:
gBG0Control.vofs = offset;
break;
case 1:
gBG1Control.vofs = offset;
break;
case 2:
gBG2Control.vofs = offset;
break;
case 3:
gBG3Control.vofs = offset;
break;
}
}
void sub_800CD64(s32 r0, u8 r1)
{
gUnknown_202D7FE = r1;
gBG2Control.unk2 = r0 ? 0x8000 : 0;
}
void SetBGOBJEnableFlags(u32 mask)
{
REG_DISPCNT = (REG_DISPCNT & 0xe0ff) | (~(mask << 8) & (DISPCNT_BG_ALL_ON | DISPCNT_OBJ_ON));
}
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