m_faders

1 files changed, 68 insertions, 0 deletions

diff --git a/src/m/m_fader_base.cpp b/src/m/m_fader_base.cpp
new file mode 100644
index 00000000..ae5c182b
--- /dev/null
+++ b/src/m/m_fader_base.cpp
@@ -0,0 +1,68 @@
+#include <m/m_fader_base.h>
+
+mFaderBase_c::mFaderBase_c(const mColor &color, EStatus status) : mFlag(0), mFrame(20), mElapsed(0) {
+    setColor(color);
+    mFlag |= FLAG_2;
+
+    switch (status) {
+    case FADED_OUT:
+        mStatus = FADED_OUT;
+        break;
+    case FADED_IN:
+        mStatus = FADED_IN;
+        break;
+    }
+}
+
+mFaderBase_c::~mFaderBase_c() {}
+
+void mFaderBase_c::setFrame(u16 frame) {
+    mFrame = frame;
+}
+
+void mFaderBase_c::setColor(const mColor &newColor) {
+    mFaderColor.r = newColor.r;
+    mFaderColor.g = newColor.g;
+    mFaderColor.b = newColor.b;
+}
+
+mFaderBase_c::EStatus mFaderBase_c::getStatus() const {
+    return mStatus;
+}
+
+bool mFaderBase_c::fadeIn() {
+    bool canFadeIn = mStatus == FADED_OUT;
+    if (canFadeIn) {
+        mStatus = FADING_IN;
+        mElapsed = 0;
+    }
+
+    return canFadeIn;
+}
+
+bool mFaderBase_c::fadeOut() {
+    bool canFadeOut = mStatus == FADED_IN;
+    if (canFadeOut) {
+        mStatus = FADING_OUT;
+        mElapsed = 0;
+    }
+
+    return canFadeOut;
+}
+
+u8 mFaderBase_c::calc() {
+    u8 result = 0;
+    if (mStatus == FADING_IN) {
+        if (mElapsed++ > mFrame) {
+            mStatus = FADED_IN;
+            result = (mFlag & FLAG_1) != 0;
+        }
+    } else if (mStatus == FADING_OUT) {
+        if (++mElapsed > mFrame + 1) {
+            mStatus = FADED_OUT;
+            result = (mFlag & FLAG_2) != 0;
+        }
+    }
+
+    return result;
+}