Highlight paths in research tree

src/main/kotlin/ru/dbotthepony/mc/otm/client/render/RenderHelper.kt

@@ -374,12 +374,12 @@ fun drawLine(
 	val y3 = -width
 
 	builder.vertex(matrix,
-		startX + y0 * sin,
+		startX - y0 * sin,
 		startY + y0 * cos,
 		zLevel).color(drawColor).endVertex()
 
 	builder.vertex(matrix,
-		startX + y1 * sin,
+		startX - y1 * sin,
 		startY + y1 * cos,
 		zLevel).color(drawColor).endVertex()
 

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/AndroidStationScreen.kt

@@ -79,6 +79,8 @@ private fun isTree(root: AndroidResearchType<*>): Boolean {
 	return true
 }
 
+typealias LinePos = Pair<Pair<Float, Float>, Pair<Float, Float>>
+
 private class Tree(val node: AndroidResearchType<*>) : Iterable<Tree> {
 	val subtrees = ArrayList<Tree>()
 
@@ -159,37 +161,25 @@ private class Tree(val node: AndroidResearchType<*>) : Iterable<Tree> {
 	): Pair<AndroidResearchButton, Float> {
 		val totalWidth = width * 24f
 
-		val lines = ArrayList<Pair<Pair<Float, Float>, Pair<Float, Float>>>()
-
-		val button = object : AndroidResearchButton(rows[node.researchTreeDepth], capability.getResearch(node)) {
-			override fun innerRender(stack: PoseStack, mouse_x: Float, mouse_y: Float, flag: Float) {
-				super.innerRender(stack, mouse_x, mouse_y, flag)
-
-				drawColor = RGBAColor.WHITE
-				RGBAColor.WHITE.setShaderColor()
-
-				for (line in lines) {
-					val (pos1, pos2) = line
-					val (x1, y1) = pos1
-					val (x2, y2) = pos2
-
-					drawLine(stack, x1, y1, x2, y2, 0.5f)
-				}
-			}
-		}
+		val lines = ArrayList<LinePos>()
+		val linesToResearch = IdentityHashMap<AndroidResearchType<*>, ArrayList<LinePos>>()
 
+		val button = AndroidResearchButton(rows[node.researchTreeDepth], capability.getResearch(node), lines, linesToResearch)
 		button.x = left + totalWidth / 2f - button.width / 2f
 
 		@Suppress("name_shadowing")
 		var left = left
 
-		val widths = FloatArrayList()
+		var busLine: LinePos? = null
 
 		if (subtrees.size > 1) {
-			lines.add(
-				((button.width / 2f) to button.y + button.height) to
-				((button.width / 2f) to button.y + button.height + 3f)
-			)
+			val x = button.width / 2f
+			val y = button.y + button.height
+
+			busLine = (x to y) to
+					(x to y + 3f)
+
+			lines.add(busLine)
 		}
 
 		var minX = Float.MAX_VALUE
@@ -197,25 +187,51 @@ private class Tree(val node: AndroidResearchType<*>) : Iterable<Tree> {
 
 		for (subtree in this) {
 			val (btn, move) = subtree.put(rows, left, capability)
-			widths.add(move)
 			left += move
 
+			val line: LinePos
+
 			if (subtrees.size == 1) {
-				lines.add(
-					((button.width / 2f) to button.y + button.height) to
-					((btn.width / 2f) to button.y + button.height + 6f)
-				)
+				val x = (button.width / 2f)
+				val y = button.y + button.height
+
+				line = (x to y) to
+						(x to y + 6f)
 			} else {
 				val x = btn.x + btn.width / 2f - button.x
 				val y = button.y + button.height + 3f
 
-				lines.add(
-					(x to y) to
+				line = (x to y) to
 						(x to y + 3f)
-				)
 
 				minX = minX.coerceAtMost(x)
 				maxX = maxX.coerceAtLeast(x)
+
+				val highlightLine =
+					((button.width / 2f) to y) to
+					(x to y)
+
+				linesToResearch.computeIfAbsent(subtree.node) { ArrayList() }.add(highlightLine)
+
+				for (children in subtree.node.allUnlocks) {
+					linesToResearch.computeIfAbsent(children) { ArrayList() }.add(highlightLine)
+				}
+			}
+
+			lines.add(line)
+
+			linesToResearch.computeIfAbsent(subtree.node) { ArrayList() }.add(line)
+
+			for (children in subtree.node.allUnlocks) {
+				linesToResearch.computeIfAbsent(children) { ArrayList() }.add(line)
+			}
+
+			if (busLine != null) {
+				linesToResearch.computeIfAbsent(subtree.node) { ArrayList() }.add(busLine)
+
+				for (children in subtree.node.allUnlocks) {
+					linesToResearch.computeIfAbsent(children) { ArrayList() }.add(busLine)
+				}
 			}
 		}
 
@@ -232,8 +248,12 @@ private class Tree(val node: AndroidResearchType<*>) : Iterable<Tree> {
 	}
 }
 
-private open class AndroidResearchButton(parent: EditablePanel, private val node: AndroidResearch) :
-	EditablePanel(
+private open class AndroidResearchButton(
+	parent: EditablePanel,
+	private val node: AndroidResearch,
+	private val lines: List<LinePos>,
+	private val highlightLines: Map<AndroidResearchType<*>, List<LinePos>>
+) :EditablePanel(
 	parent.screen,
 	parent,
 	0f,
@@ -241,10 +261,25 @@ private open class AndroidResearchButton(parent: EditablePanel, private val node
 	AndroidStationScreen.BUTTON_SIZE.toFloat(),
 	AndroidStationScreen.BUTTON_SIZE.toFloat()
 ) {
+
 	init {
 		setDockMargin(2f, 2f, 2f, 2f)
 	}
 
+	override fun onHovered() {
+		super.onHovered()
+
+		(screen as AndroidStationScreen).hoveredResearch = node
+	}
+
+	override fun onUnHovered() {
+		super.onUnHovered()
+
+		if ((screen as AndroidStationScreen).hoveredResearch == node) {
+			screen.hoveredResearch = null
+		}
+	}
+
 	override fun innerRender(stack: PoseStack, mouse_x: Float, mouse_y: Float, flag: Float) {
 		minecraft.player?.getCapability(MatteryCapability.ANDROID)?.ifPresentK {
 			if (node.isResearched) {
@@ -269,6 +304,30 @@ private open class AndroidResearchButton(parent: EditablePanel, private val node
 				font.drawShadow(stack, text, width - font.width(text), height - font.lineHeight, -0x1)
 			}
 		}
+
+		drawColor = RGBAColor.WHITE
+		RGBAColor.WHITE.setShaderColor()
+
+		for (line in lines) {
+			val (pos1, pos2) = line
+			val (x1, y1) = pos1
+			val (x2, y2) = pos2
+
+			drawLine(stack, x1, y1, x2, y2, 0.5f)
+		}
+
+		val hovered = (screen as AndroidStationScreen).hoveredResearch ?: return
+		val lines = highlightLines[hovered.type] ?: return
+
+		drawColor = RGBAColor.LIGHT_GREEN
+
+		for (line in lines) {
+			val (pos1, pos2) = line
+			val (x1, y1) = pos1
+			val (x2, y2) = pos2
+
+			drawLine(stack, x1, y1, x2, y2, 0.5f)
+		}
 	}
 
 	override fun mouseClickedInner(mouse_x: Double, mouse_y: Double, mouse_click_type: Int): Boolean {
@@ -307,6 +366,7 @@ class AndroidStationScreen constructor(p_97741_: AndroidStationMenu, p_97742_: I
 
 	private var canvas: DraggableCanvasPanel? = null
 	private var research: FramePanel? = null
+	var hoveredResearch: AndroidResearch? = null
 
 	private fun openResearchTree() {
 		val window = minecraft!!.window
@@ -352,7 +412,7 @@ class AndroidStationScreen constructor(p_97741_: AndroidStationMenu, p_97742_: I
 							}
 						})
 
-						val button = AndroidResearchButton(row, it.getResearch(research))
+						val button = AndroidResearchButton(row, it.getResearch(research), emptyList(), emptyMap())
 						val width = rowWidths[research.researchTreeDepth]
 						button.setPos(totalWidth + width, 0f)
 						rowWidths[research.researchTreeDepth] += 22f

src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/EditablePanel.kt

@@ -23,7 +23,7 @@ enum class Dock {
 }
 
 open class EditablePanel @JvmOverloads constructor(
-	@JvmField val screen: MatteryScreen<*>,
+	val screen: MatteryScreen<*>,
 	parent: EditablePanel?,
 
 	// относительно родителя
@@ -176,12 +176,27 @@ open class EditablePanel @JvmOverloads constructor(
 		private set
 
 	var isHovered = false
-		private set
+		private set(value) {
+			if (value == field) {
+				return
+			}
+
+			field = value
+
+			if (value) {
+				onHovered()
+			} else {
+				onUnHovered()
+			}
+		}
 
 	fun unsetHovered() {
 		isHovered = false
 	}
 
+	open fun onHovered() {}
+	open fun onUnHovered() {}
+
 	var isFocused = false
 		set(value) {
 			if (field != value) {

src/main/kotlin/ru/dbotthepony/mc/otm/core/RGBAColor.kt

@@ -5,6 +5,7 @@ import com.mojang.blaze3d.systems.RenderSystem
 data class RGBAColor(val red: Float, val green: Float, val blue: Float, val alpha: Float = 1f) {
 	constructor(r: Int, g: Int, b: Int) : this((r / 255f), (g / 255f), (b / 255f), 1f)
 	constructor(r: Int, g: Int, b: Int, a: Int) : this((r / 255f), (g / 255f), (b / 255f), (a / 255f))
+	constructor(r: Int, g: Int, b: Int, a: Float) : this((r / 255f), (g / 255f), (b / 255f), a)
 
 	constructor(color: Long) : this(
 		(((color and -0x1000000) ushr 24) / 255f),
@@ -52,6 +53,8 @@ data class RGBAColor(val red: Float, val green: Float, val blue: Float, val alph
 	companion object {
 		val BLACK = RGBAColor(0f, 0f, 0f, 1f)
 		val WHITE = RGBAColor(1f, 1f, 1f, 1f)
+		val GREEN = RGBAColor(0f, 1f, 0f, 1f)
+		val LIGHT_GREEN = RGBAColor(136, 255, 124)
 		val SLATE_GRAY = RGBAColor(64, 64, 64)
 		val GRAY = RGBAColor(0x2C2C2CFFL)