feat: Smooth-ish interpolation of breaking progress

src/compat/jade/java/moe/nea/firmament/compat/jade/CustomMiningHardnessProvider.kt

@@ -4,11 +4,15 @@ import snownee.jade.api.BlockAccessor
 import snownee.jade.api.IBlockComponentProvider
 import snownee.jade.api.ITooltip
 import snownee.jade.api.config.IPluginConfig
+import kotlin.time.DurationUnit
 import net.minecraft.block.BlockState
 import net.minecraft.util.Identifier
 import net.minecraft.util.math.BlockPos
 import moe.nea.firmament.Firmament
+import moe.nea.firmament.annotations.Subscribe
+import moe.nea.firmament.events.TickEvent
 import moe.nea.firmament.util.MC
+import moe.nea.firmament.util.TimeMark
 import moe.nea.firmament.util.tr
 
 object CustomMiningHardnessProvider : IBlockComponentProvider {
@@ -29,13 +33,35 @@ object CustomMiningHardnessProvider : IBlockComponentProvider {
 	data class BreakingInfo(
 		val blockPos: BlockPos, val stage: Int,
 		val state: BlockState?,
+		val ts: TimeMark = TimeMark.now()
 	)
 
+	var previousBreakingInfo: BreakingInfo? = null
 	var currentBreakingInfo: BreakingInfo? = null
 
+	@Subscribe
+	fun clearInfoOnStopBreaking(event: TickEvent) {
+		val isBreakingBlock = MC.interactionManager?.isBreakingBlock ?: false
+		if (!isBreakingBlock) {
+			previousBreakingInfo = null
+			currentBreakingInfo = null
+		}
+	}
+
 	@JvmStatic
 	fun setBreakingInfo(blockPos: BlockPos, stage: Int) {
-		currentBreakingInfo = BreakingInfo(blockPos.toImmutable(), stage, MC.world?.getBlockState(blockPos))
+		previousBreakingInfo = currentBreakingInfo
+		val state = MC.world?.getBlockState(blockPos)
+		if (previousBreakingInfo?.let { it.state != state || it.blockPos != blockPos } ?: false)
+			previousBreakingInfo == null
+		currentBreakingInfo = BreakingInfo(blockPos.toImmutable(), stage, state)
+		// For some reason hypixel initially sends a stage 10 packet, and then fixes it up with a stage 0 packet.
+		// Ignore the stage 10 packet if we dont have any previous packets for this block.
+		// This could in theory still have issues if someone perfectly stops breaking a block the tick it finishes and then does not break another block until it respawns, but i deem that to be too much of an edge case.
+		if (stage == 10 && previousBreakingInfo == null) {
+			previousBreakingInfo = null
+			currentBreakingInfo = null
+		}
 	}
 
 	@JvmStatic
@@ -45,10 +71,26 @@ object CustomMiningHardnessProvider : IBlockComponentProvider {
 		val info = currentBreakingInfo
 		if (info?.blockPos != pos || info.state != MC.world?.getBlockState(pos)) {
 			currentBreakingInfo = null
-			return 0F
+			previousBreakingInfo = null
+			return original
 		}
-		// TODO: use linear extrapolation to guess how quickly this progresses between stages.
+		// TODO: improve this interpolation to work across all stages, to alleviate some of the jittery bar.
-		// This would only be possible after one stage, but should make the remaining stages a bit smoother
+		// Maybe introduce a proper mining API that tracks the actual progress with some sort of FSM
-		return info.stage / 10F
+		val interpolatedStage = previousBreakingInfo?.let { prev ->
+			val timeBetweenTicks = (info.ts - prev.ts).toDouble(DurationUnit.SECONDS)
+			val stagesPerUpdate = (info.stage - prev.stage).toDouble()
+			if (stagesPerUpdate < 1) return@let null
+			val stagesPerSecond = stagesPerUpdate / timeBetweenTicks
+			info.stage + (info.ts.passedTime().toDouble(DurationUnit.SECONDS) * stagesPerSecond)
+				.coerceAtMost(stagesPerUpdate)
+		}?.toFloat()
+		val stage = interpolatedStage ?: info.stage.toFloat()
+		return stage / 10F
+	}
+
+	@JvmStatic
+	fun replaceBlockBreakSpeed(original: Float): Float {
+		if (isOnMiningIsland()) return 0F
+		return original
 	}
 }

src/compat/jade/java/moe/nea/firmament/mixins/compat/jade/PatchBreakingBarSpeedJade.java

@@ -16,5 +16,10 @@ public class PatchBreakingBarSpeedJade {
 	private static float replaceBlockBreakingProgress(float original) {
 		return CustomMiningHardnessProvider.replaceBreakProgress(original);
 	}
-	// TODO: given the inherent roughness of the server provided stages, i don't feel the need to also patch the accesses to the delta provided by the block state. if i ever get around to adding the linear extrapolation, i should also patch that extrapolation to use the better one provided by the server stages.
+
+	@ModifyExpressionValue(method = "drawBreakingProgress",
+		at = @At(value = "INVOKE", target = "Lnet/minecraft/block/BlockState;calcBlockBreakingDelta(Lnet/minecraft/entity/player/PlayerEntity;Lnet/minecraft/world/BlockView;Lnet/minecraft/util/math/BlockPos;)F"))
+	private static float replacePlayerSpecificBreakingProgress(float original) {
+		return CustomMiningHardnessProvider.replaceBlockBreakSpeed(original);
+	}
 }