From 97457ab0279a2273e382ecd52cc95b7df4bd6a88 Mon Sep 17 00:00:00 2001
From: DBotThePony <dbotthepony@yandex.ru>
Date: Sat, 17 Sep 2022 14:42:39 +0700
Subject: [PATCH] Make matter gauge panel more fun to interact with Fixes #16
 Fixes #20

---
 .../client/screen/widget/MatterGaugePanel.kt  | 76 +++++++++++++------
 1 file changed, 51 insertions(+), 25 deletions(-)

diff --git a/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/widget/MatterGaugePanel.kt b/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/widget/MatterGaugePanel.kt
index a2c403ca0..076705614 100644
--- a/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/widget/MatterGaugePanel.kt
+++ b/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/widget/MatterGaugePanel.kt
@@ -16,7 +16,9 @@ import ru.dbotthepony.mc.otm.client.screen.panels.EditablePanel
 import ru.dbotthepony.mc.otm.core.TranslatableComponent
 import ru.dbotthepony.mc.otm.core.formatMatterLevel
 import ru.dbotthepony.mc.otm.menu.widget.LevelGaugeWidget
+import kotlin.math.absoluteValue
 import kotlin.math.cos
+import kotlin.math.pow
 import kotlin.math.sin
 
 open class MatterGaugePanel<S : Screen> @JvmOverloads constructor(
@@ -30,6 +32,12 @@ open class MatterGaugePanel<S : Screen> @JvmOverloads constructor(
 		scissor = true
 	}
 
+	private var wavesStrength = 0.5f
+	private var lastAbsoluteX = 0f
+	private var lastAbsoluteY = 0f
+	private var lastDraw = System.nanoTime()
+	private var lastLevel = 0f
+
 	protected open fun makeTooltip(): MutableList<Component> {
 		return mutableListOf(
 			TranslatableComponent(
@@ -41,43 +49,61 @@ open class MatterGaugePanel<S : Screen> @JvmOverloads constructor(
 	}
 
 	override fun innerRender(stack: PoseStack, mouseX: Float, mouseY: Float, partialTick: Float) {
+		if (lastAbsoluteX == 0f && lastAbsoluteY == 0f) {
+			lastAbsoluteX = absoluteX
+			lastAbsoluteY = absoluteY
+			lastDraw = System.nanoTime()
+			lastLevel = widget.percentage()
+		} else {
+			val diff = ((lastAbsoluteX - absoluteX).pow(2f) + (lastAbsoluteY - absoluteY).pow(2f)).pow(0.5f) / 10f + (lastLevel - widget.percentage()).absoluteValue * 1.5f
+
+			lastAbsoluteX = absoluteX
+			lastAbsoluteY = absoluteY
+
+			wavesStrength = (wavesStrength + diff - (System.nanoTime() - lastDraw) / 400_000_000f).coerceAtLeast(0.5f).coerceAtMost(16f)
+			lastDraw = System.nanoTime()
+			lastLevel = widget.percentage()
+		}
+
 		GAUGE_BACKGROUND.render(stack)
 		val height = this.height * (1f - widget.percentage())
 
-		RenderSystem.setShader(GameRenderer::getPositionTexShader)
-		RenderSystem.enableTexture()
-		RenderSystem.enableBlend()
-		RenderSystem.defaultBlendFunc()
-		RenderSystem.depthFunc(GL11.GL_ALWAYS)
+		if (widget.percentage() > 0.01f) {
+			RenderSystem.setShader(GameRenderer::getPositionTexShader)
+			RenderSystem.enableTexture()
+			RenderSystem.enableBlend()
+			RenderSystem.defaultBlendFunc()
+			RenderSystem.depthFunc(GL11.GL_ALWAYS)
 
-		RenderSystem.setShaderColor(1f, 1f, 1f, 1f)
+			RenderSystem.setShaderColor(1f, 1f, 1f, 1f)
 
-		val u0 = GAUGE_FOREGROUND.x / GAUGE_FOREGROUND.imageWidth
-		val u1 = (GAUGE_FOREGROUND.x + GAUGE_FOREGROUND.width) / GAUGE_FOREGROUND.imageWidth
-		val v1 = (GAUGE_FOREGROUND.y + GAUGE_FOREGROUND.height) / GAUGE_FOREGROUND.imageHeight
+			val u0 = GAUGE_FOREGROUND.x / GAUGE_FOREGROUND.imageWidth
+			val u1 = (GAUGE_FOREGROUND.x + GAUGE_FOREGROUND.width) / GAUGE_FOREGROUND.imageWidth
+			val v1 = (GAUGE_FOREGROUND.y + GAUGE_FOREGROUND.height) / GAUGE_FOREGROUND.imageHeight
 
-		val matrix = stack.last().pose()
-		val builder = tesselator.builder
+			val matrix = stack.last().pose()
+			val builder = tesselator.builder
 
-		builder.begin(VertexFormat.Mode.TRIANGLE_FAN, DefaultVertexFormat.POSITION_TEX)
+			builder.begin(VertexFormat.Mode.TRIANGLE_FAN, DefaultVertexFormat.POSITION_TEX)
 
-		builder.vertex(matrix, 0f, this.height, 0f).uv(u0, v1).endVertex()
-		builder.vertex(matrix, width, this.height, 0f).uv(u1, v1).endVertex()
+			builder.vertex(matrix, 0f, this.height, 0f).uv(u0, v1).endVertex()
+			builder.vertex(matrix, width, this.height, 0f).uv(u1, v1).endVertex()
 
-		for (i in 4 downTo 0) {
-			val sin = sin((System.currentTimeMillis() / 50L + i * 2L).toDouble() / 4.0).toFloat()
-			val cos = cos((System.currentTimeMillis() / 50L + i * 3L + 27L).toDouble() / 4.0).toFloat()
+			for (i in 4 downTo 0) {
+				val sin = sin((System.currentTimeMillis() / 50L + i * 2L).toDouble() / 4.0).toFloat() * wavesStrength.coerceAtMost(4f)
+				val cos = cos((System.currentTimeMillis() / 50L + i * 3L + 27L).toDouble() / 4.0).toFloat() * wavesStrength.coerceAtMost(4f)
 
-			val thisX = (width * (i / 4f))
-			val thisY = (height + sin + cos).coerceAtLeast(0f)
+				val thisX = (width * (i / 4f))
+				val thisY = (height + sin + cos).coerceAtLeast(0f)
 
-			builder.vertex(matrix, thisX, thisY, 0f).uv(
-				(GAUGE_FOREGROUND.x + (i / 4f) * GAUGE_FOREGROUND.width) / GAUGE_FOREGROUND.imageWidth,
-				(GAUGE_FOREGROUND.y + thisY) / GAUGE_FOREGROUND.imageHeight,
-			).endVertex()
+				builder.vertex(matrix, thisX, thisY, 0f).uv(
+					(GAUGE_FOREGROUND.x + (i / 4f) * GAUGE_FOREGROUND.width) / GAUGE_FOREGROUND.imageWidth,
+					(GAUGE_FOREGROUND.y + thisY) / GAUGE_FOREGROUND.imageHeight,
+				).endVertex()
+			}
+
+			BufferUploader.drawWithShader(builder.end())
 		}
-
-		BufferUploader.drawWithShader(builder.end())
 	}
 
 	override fun innerRenderTooltips(stack: PoseStack, mouseX: Float, mouseY: Float, partialTick: Float): Boolean {