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#include "egg/core/eggColorFader.h"
EGG::ColorFader::ColorFader(
float startX, float startY, float lengthX, float lengthY, nw4r::ut::Color color, Fader::EStatus initialStatus
)
: mStartX(startX),
mStartY(startY),
mEndX(startX + lengthX),
mEndY(startY + lengthY),
mFrame(0x14),
mFadeTimer(0),
mFlags(0) {
setColor(color);
setStatus(initialStatus);
mFlags.setBit(1);
}
void EGG::ColorFader::setFrame(u16 frames) {
mFrame = frames;
}
void EGG::ColorFader::setColor(nw4r::ut::Color color) {
mColor.r = color.r;
mColor.g = color.g;
mColor.b = color.b;
// Don't set alpha
}
void EGG::ColorFader::setStatus(Fader::EStatus status) {
if (status == STATUS_PREPARE_IN) {
mStatus = STATUS_PREPARE_IN;
mColor.a = 255;
} else if (status == STATUS_PREPARE_OUT) {
mStatus = STATUS_PREPARE_OUT;
mColor.a = 0;
}
}
bool EGG::ColorFader::fadeIn() {
bool doFadeIn = mStatus == STATUS_PREPARE_IN;
if (doFadeIn) {
mStatus = STATUS_FADE_IN;
mFadeTimer = 0;
}
return doFadeIn;
}
bool EGG::ColorFader::fadeOut() {
bool doFadeOut = mStatus == STATUS_PREPARE_OUT;
if (doFadeOut) {
mStatus = STATUS_FADE_OUT;
mFadeTimer = 0;
}
return doFadeOut;
}
bool EGG::ColorFader::calc() {
bool result = false;
if (mStatus == STATUS_PREPARE_OUT) {
mColor.a = 0;
} else if (mStatus == STATUS_PREPARE_IN) {
mColor.a = 255;
} else if (mStatus == STATUS_FADE_IN) {
u16 endFrame = mFrame;
u16 currFrame = mFadeTimer++;
if (currFrame > endFrame) {
mStatus = STATUS_PREPARE_OUT;
result = mFlags.onBit(0);
currFrame = mFrame;
}
mColor.a = 255 - (currFrame * 255 / mFrame);
} else if (mStatus == STATUS_FADE_OUT) {
u16 endFrame = mFrame;
u16 currFrame = mFadeTimer++;
if (currFrame > endFrame) {
if (currFrame > endFrame + 1) {
mStatus = STATUS_PREPARE_IN;
result = mFlags.onBit(1);
}
endFrame = mFrame;
currFrame = endFrame;
}
mColor.a = currFrame * 255 / endFrame;
}
return result;
}
void EGG::ColorFader::draw() {
if (mColor.a == 0) {
return;
}
Mtx44 projMtx;
C_MTXOrtho(projMtx, mStartY, mEndY, mStartX, mEndX, 0.0f, 1.0f);
GXSetProjection(projMtx, GX_ORTHOGRAPHIC);
GXSetViewport(mStartX, mStartY, getWidth(), getHeight(), 0.0f, 1.0f);
GXSetScissor(mStartX, mStartY, getWidth(), getHeight());
Mtx posMtx;
MTXIdentity(posMtx);
GXLoadPosMtxImm(posMtx, 0);
GXSetCurrentMtx(0);
GXClearVtxDesc();
GXInvalidateVtxCache();
GXSetVtxDesc(GX_VA_POS, GX_DIRECT);
GXSetVtxAttrFmt(GX_VTXFMT0, GX_VA_POS, GX_CLR_RGBA, GX_F32, 0);
GXSetNumChans(1);
GXSetChanMatColor(GX_COLOR0A0, mColor);
GXSetChanCtrl(GX_COLOR0A0, 0, GX_SRC_REG, GX_SRC_REG, GX_LIGHT_NULL, GX_DF_NONE, GX_AF_NONE);
GXSetNumTexGens(0);
GXSetNumIndStages(0);
__GXSetIndirectMask(0);
GXSetNumTevStages(1);
GXSetTevOp(GX_TEVSTAGE0, 4);
GXSetTevOrder(GX_TEVSTAGE0, GX_TEXCOORD_NULL, GX_TEXMAP_NULL, GX_COLOR0A0);
if (mColor.a == 255) {
GXSetBlendMode(GX_BM_NONE, GX_BL_ONE, GX_BL_ZERO, GX_LO_SET);
} else {
GXSetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_SET);
}
GXSetColorUpdate(1);
GXSetAlphaUpdate(1);
GXSetZMode(0, GX_NEVER, 0);
GXSetCullMode(GX_CULL_BACK);
GXBegin(GX_QUADS, GX_VTXFMT0, 4);
GXPosition3f32(mStartX, mStartY, 0.0f);
GXPosition3f32(mEndX, mStartY, 0.0f);
GXPosition3f32(mEndX, mEndY, 0.0f);
GXPosition3f32(mStartX, mEndY, 0.0f);
// GXEnd();
}
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