1 files changed, 66 insertions, 0 deletions

diff --git a/src/Simulator/IncrementalRedstoneSimulator/DaylightSensorHandler.h b/src/Simulator/IncrementalRedstoneSimulator/DaylightSensorHandler.h
new file mode 100644
index 000000000..160486d29
--- /dev/null
+++ b/src/Simulator/IncrementalRedstoneSimulator/DaylightSensorHandler.h
@@ -0,0 +1,66 @@
+
+#pragma once
+
+#include "World.h"
+
+
+
+
+
+namespace DaylightSensorHandler
+{
+	inline PowerLevel GetPowerLevel(const cChunk & a_Chunk, const Vector3i a_Position)
+	{
+		if (a_Chunk.GetBlock(a_Position) == E_BLOCK_INVERTED_DAYLIGHT_SENSOR)
+		{
+			// Inverted sensor directly returns darkened skylight, no fancy tricks:
+			return 15 - a_Chunk.GetSkyLightAltered(a_Position);
+		}
+
+		// The [0, 1) proportion of the current day that has elapsed.
+		const auto ProportionOfDay = a_Chunk.GetWorld()->GetTimeOfDay() * (static_cast<float>(M_PI) / 12000.f);
+
+		// The curved value of darkened skylight, with outputs somewhat similar to Vanilla.
+		const auto RawOutput = a_Chunk.GetSkyLightAltered(a_Position) * (0.6f * std::sin(ProportionOfDay) + 0.5f);
+
+		// Saturate the amplified sine curve at 0 and 15:
+		return static_cast<PowerLevel>(std::clamp(RawOutput, 0.f, 15.f));
+	}
+
+	inline PowerLevel GetPowerDeliveredToPosition(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, Vector3i a_QueryPosition, BLOCKTYPE a_QueryBlockType, bool IsLinked)
+	{
+		UNUSED(a_Chunk);
+		UNUSED(a_BlockType);
+		UNUSED(a_QueryPosition);
+
+		// Daylight sensors only output to immediately surrounding blocks:
+		return IsLinked ? 0 : a_Chunk.GetMeta(a_Position);
+	}
+
+	inline void Update(cChunk & a_Chunk, cChunk & CurrentlyTicking, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, const PowerLevel Power)
+	{
+		// LOGD("Evaluating Darryl the daylight sensor (%d %d %d)", a_Position.x, a_Position.y, a_Position.z);
+
+		// We don't need to update the daylight sensor often:
+		DataForChunk(a_Chunk).m_MechanismDelays[a_Position] = std::make_pair(10, bool());
+
+		// What the sensor should output according to the time-power function.
+		const auto PowerLevel = GetPowerLevel(a_Chunk, a_Position);
+
+		// Only update the output if the power level has changed:
+		if (PowerLevel != a_Meta)
+		{
+			a_Chunk.SetMeta(a_Position, PowerLevel);
+			UpdateAdjustedRelatives(a_Chunk, CurrentlyTicking, a_Position, RelativeAdjacents);
+		}
+	}
+
+	inline void ForValidSourcePositions(const cChunk & a_Chunk, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, ForEachSourceCallback & Callback)
+	{
+		UNUSED(a_Chunk);
+		UNUSED(a_Position);
+		UNUSED(a_BlockType);
+		UNUSED(a_Meta);
+		UNUSED(Callback);
+	}
+};