src/main/kotlin/net/shadowfacts/asmr/manager/ManagerBlockEntity.kt

@@ -25,17 +25,17 @@ class ManagerBlockEntity: BlockEntity(ASMR.managerEntityType) {
 			it.position = Point(0.0, 120.0)
 		}
 		val divide = program.addBlock(BinaryOperatorBlock(INT, DIVIDE)) {
-			it.left.link(from = left.output)
-			it.right.link(from = right.output)
+			it.left.source = left.output
+			it.right.source = right.output
 			it.position = Point(120.0, 0.0)
 		}
 		val print = program.addBlock(PrintBlock(INT)) {
-			it.input.link(from = divide.output)
+			it.input.source = divide.output
 			it.position = Point(240.0, 0.0)
 		}
 
-		program.startBlock.executionFlow.link(divide)
-		divide.executionFlow.link(print)
+		program.startBlock.nextExecutableBlock = divide
+		divide.nextExecutableBlock = print
 	}
 
 	fun activate() {

src/main/kotlin/net/shadowfacts/asmr/program/ExecutableBlock.kt

@@ -1,11 +1,13 @@
 package net.shadowfacts.asmr.program
 
+import net.shadowfacts.cacao.geometry.Point
+
 /**
  * @author shadowfacts
  */
 abstract class ExecutableBlock: ProgramBlock() {
 
-	open val executionFlow = ExecutionFlow(this)
+	var nextExecutableBlock: ExecutableBlock? = null
 
 	abstract fun execute()
 

src/main/kotlin/net/shadowfacts/asmr/program/ExecutionFlow.kt

@@ -1,16 +0,0 @@
-package net.shadowfacts.asmr.program
-
-/**
- * @author shadowfacts
- */
-open class ExecutionFlow(val block: ExecutableBlock) {
-
-	open var next: ExecutableBlock? = null
-	open var prev: ExecutableBlock? = null
-
-	fun link(next: ExecutableBlock) {
-		this.next = next
-		next.executionFlow.prev = block
-	}
-
-}

src/main/kotlin/net/shadowfacts/asmr/program/Program.kt

@@ -11,14 +11,14 @@ class Program {
 	var startBlock = StartBlock().apply {
 		position = Point.ORIGIN
 	}
-	val blocks = mutableListOf<ProgramBlock>(startBlock)
+	val blocks = mutableListOf<ProgramBlock>()
 
 	fun execute() {
-		var currentBlock: ExecutableBlock? = startBlock.executionFlow.next
+		var currentBlock: ExecutableBlock? = startBlock.nextExecutableBlock
 		while (currentBlock != null) {
 			currentBlock.execute()
 
-			currentBlock = currentBlock.executionFlow.next
+			currentBlock = currentBlock.nextExecutableBlock
 		}
 	}
 

src/main/kotlin/net/shadowfacts/asmr/program/ProgramBlockInput.kt

@@ -1,29 +1,15 @@
 package net.shadowfacts.asmr.program
 
-import net.minecraft.util.Identifier
-
 /**
  * @author shadowfacts
  */
 class ProgramBlockInput<Type: Any>(
-		val identifier: Identifier,
 		val type: ProgramType<Type>,
 		val block: ProgramBlock,
-		source: ProgramBlockOutput<Type>? = null
+		var source: ProgramBlockOutput<Type>? = null
 ) {
 
-	var source: ProgramBlockOutput<Type>? = source
-		internal set
-
 	val value: Type?
 		get() = source?.value
 
-	fun link(from: ProgramBlockOutput<Type>) {
-		from.link(to = this)
-	}
-
-	fun unlink() {
-		source?.unlink(to = this)
-	}
-
 }

src/main/kotlin/net/shadowfacts/asmr/program/ProgramBlockOutput.kt

@@ -1,29 +1,13 @@
 package net.shadowfacts.asmr.program
 
-import net.minecraft.util.Identifier
-
 /**
  * @author shadowfacts
  */
 class ProgramBlockOutput<Type: Any>(
-		val identifier: Identifier,
 		val type: ProgramType<Type>,
 		val block: ProgramBlock
 ) {
 
 	lateinit var value: Type
 
-	private val _destinations = mutableListOf<ProgramBlockInput<Type>>()
-	val destinations: List<ProgramBlockInput<Type>> = _destinations
-
-	fun link(to: ProgramBlockInput<Type>) {
-		to.source = this
-		_destinations.add(to)
-	}
-
-	fun unlink(to: ProgramBlockInput<Type>) {
-		to.source = null
-		_destinations.remove(to)
-	}
-
 }

src/main/kotlin/net/shadowfacts/asmr/program/blocks/ConstantBlock.kt

@@ -1,7 +1,5 @@
 package net.shadowfacts.asmr.program.blocks
 
-import net.minecraft.util.Identifier
-import net.shadowfacts.asmr.ASMR
 import net.shadowfacts.asmr.program.ProgramBlock
 import net.shadowfacts.asmr.program.ProgramBlockInput
 import net.shadowfacts.asmr.program.ProgramBlockOutput
@@ -15,7 +13,7 @@ class ConstantBlock<Type: Any>(
 		val value: Type
 ): ProgramBlock() {
 
-	val output = ProgramBlockOutput(Identifier(ASMR.modid, "constant_output"), type, this).apply {
+	val output = ProgramBlockOutput(type, this).apply {
 		value = this@ConstantBlock.value
 	}
 

src/main/kotlin/net/shadowfacts/asmr/program/blocks/PrintBlock.kt

@@ -1,8 +1,9 @@
 package net.shadowfacts.asmr.program.blocks
 
-import net.minecraft.util.Identifier
-import net.shadowfacts.asmr.ASMR
-import net.shadowfacts.asmr.program.*
+import net.shadowfacts.asmr.program.ExecutableBlock
+import net.shadowfacts.asmr.program.ProgramBlockInput
+import net.shadowfacts.asmr.program.ProgramBlockOutput
+import net.shadowfacts.asmr.program.ProgramType
 import net.shadowfacts.cacao.geometry.Point
 
 /**
@@ -12,7 +13,7 @@ class PrintBlock<Type: Any>(
 		val type: ProgramType<Type>
 ): ExecutableBlock() {
 
-	val input = ProgramBlockInput(Identifier(ASMR.modid, "print_input"), type, this)
+	val input = ProgramBlockInput(type, this)
 
 	override val inputs: Array<ProgramBlockInput<*>> = arrayOf(input)
 	override val outputs: Array<ProgramBlockOutput<*>> = arrayOf()

src/main/kotlin/net/shadowfacts/asmr/program/blocks/StartBlock.kt

@@ -1,18 +1,18 @@
 package net.shadowfacts.asmr.program.blocks
 
 import net.shadowfacts.asmr.program.ExecutableBlock
+import net.shadowfacts.asmr.program.ProgramBlock
 import net.shadowfacts.asmr.program.ProgramBlockInput
 import net.shadowfacts.asmr.program.ProgramBlockOutput
 
 /**
  * @author shadowfacts
  */
-class StartBlock: ExecutableBlock() {
+class StartBlock: ProgramBlock() {
 
 	override val inputs: Array<ProgramBlockInput<*>> = arrayOf()
 	override val outputs: Array<ProgramBlockOutput<*>> = arrayOf()
 
-	override fun execute() {
-	}
+	var nextExecutableBlock: ExecutableBlock? = null
 
 }

src/main/kotlin/net/shadowfacts/asmr/program/blocks/math/BinaryOperatorBlock.kt

@@ -1,7 +1,5 @@
 package net.shadowfacts.asmr.program.blocks.math
 
-import net.minecraft.util.Identifier
-import net.shadowfacts.asmr.ASMR
 import net.shadowfacts.asmr.program.ExecutableBlock
 import net.shadowfacts.asmr.program.ProgramBlockInput
 import net.shadowfacts.asmr.program.ProgramBlockOutput
@@ -22,10 +20,10 @@ class BinaryOperatorBlock<Type: Any>(
 		}
 	}
 
-	val left = ProgramBlockInput(Identifier(ASMR.modid, "left_operand"), type, this)
-	val right = ProgramBlockInput(Identifier(ASMR.modid, "right_operand"), type, this)
+	val left = ProgramBlockInput(type, this)
+	val right = ProgramBlockInput(type, this)
 
-	val output = ProgramBlockOutput(Identifier(ASMR.modid, "result"), type, this)
+	val output = ProgramBlockOutput(type, this)
 
 	override val inputs: Array<ProgramBlockInput<*>> = arrayOf(left, right)
 	override val outputs: Array<ProgramBlockOutput<*>> = arrayOf(output)

src/main/kotlin/net/shadowfacts/asmr/ui/ProgramBlockView.kt

@@ -1,40 +1,18 @@
 package net.shadowfacts.asmr.ui
 
-import net.minecraft.util.Identifier
-import net.shadowfacts.asmr.ASMR
-import net.shadowfacts.asmr.program.ExecutableBlock
 import net.shadowfacts.asmr.program.ProgramBlock
-import net.shadowfacts.asmr.program.ProgramBlockInput
-import net.shadowfacts.asmr.program.ProgramBlockOutput
-import net.shadowfacts.cacao.geometry.Axis
 import net.shadowfacts.cacao.geometry.Point
 import net.shadowfacts.cacao.util.Color
 import net.shadowfacts.cacao.util.MouseButton
-import net.shadowfacts.cacao.util.texture.Texture
 import net.shadowfacts.cacao.view.Label
-import net.shadowfacts.cacao.view.StackView
-import net.shadowfacts.cacao.view.TextureView
 import net.shadowfacts.cacao.view.View
 import net.shadowfacts.kiwidsl.dsl
 import no.birkett.kiwi.Constraint
-import kotlin.math.max
 
 /**
  * @author shadowfacts
  */
-class ProgramBlockView(val block: ProgramBlock): StackView(Axis.VERTICAL, Distribution.CENTER, spacing = 4.0) {
-
-	companion object {
-		val emptyConnection = Texture(Identifier(ASMR.modid, "textures/gui/programmer/program_connections.png"), u = 0, v = 0)
-		val executionConnection = Texture(Identifier(ASMR.modid, "textures/gui/programmer/program_connections.png"), u = 7, v = 0)
-		val parameterConnection = Texture(Identifier(ASMR.modid, "textures/gui/programmer/program_connections.png"), u = 14, v = 0)
-	}
-
-	var incomingExecution: View? = null
-	var outgoingExeuction: View? = null
-
-	val inputViews = mutableMapOf<ProgramBlockInput<*>, View>()
-	val outputViews = mutableMapOf<ProgramBlockOutput<*>, View>()
+class ProgramBlockView(val block: ProgramBlock): View() {
 
 	var xConstraint: Constraint? = null
 	var yConstraint: Constraint? = null
@@ -47,103 +25,15 @@ class ProgramBlockView(val block: ProgramBlock): StackView(Axis.VERTICAL, Distri
 		backgroundColor = Color.BLACK
 		zIndex = 10.0
 
-		val titleStack = addArrangedSubview(StackView(Axis.HORIZONTAL, Distribution.CENTER))
-		val title = titleStack.addArrangedSubview(Label(block.javaClass.simpleName))
-		if (block is ExecutableBlock) {
-			val incomingTexture = if (block.executionFlow.prev == null) emptyConnection else executionConnection
-			incomingExecution = titleStack.addArrangedSubview(TextureView(incomingTexture), index = 0)
-			val outgoingTexture = if (block.executionFlow.next == null) emptyConnection else executionConnection
-			outgoingExeuction = titleStack.addArrangedSubview(TextureView(outgoingTexture))
-		}
+		val title = addSubview(Label(block.javaClass.simpleName))
 
 		solver.dsl {
-			// we have to constrain the titleStack height, because it's distribution is set to CENTER, so it doesn't do it itself
-			titleStack.heightAnchor equalTo title.heightAnchor
-			widthAnchor greaterThanOrEqualTo titleStack.widthAnchor
-
-			if (block is ExecutableBlock) {
-				incomingExecution!!.widthAnchor equalTo incomingExecution!!.heightAnchor
-				incomingExecution!!.widthAnchor equalTo 7
-				outgoingExeuction!!.widthAnchor equalTo outgoingExeuction!!.heightAnchor
-				outgoingExeuction!!.widthAnchor equalTo 7
+			widthAnchor equalTo (title.widthAnchor + 8)
+			heightAnchor equalTo (title.heightAnchor + 8)
+			title.centerXAnchor equalTo centerXAnchor
+			title.centerYAnchor equalTo centerYAnchor
 		}
 
-
-//			for (paramView in inputViews.values) {
-//				paramView.widthAnchor equalTo paramView.heightAnchor
-//				paramView.widthAnchor equalTo 7
-//			}
-		}
-
-		for (i in 0 until max(block.inputs.size, block.outputs.size)) {
-			val hStack = addArrangedSubview(StackView(Axis.HORIZONTAL, Distribution.CENTER))
-
-			block.inputs.getOrNull(i)?.let { input ->
-				val inputView = hStack.addArrangedSubview(TextureView(if (input.source == null) emptyConnection else parameterConnection))
-				inputViews[input] = inputView
-				val inputLabel = hStack.addArrangedSubview(Label(input.identifier.toString()))
-				solver.dsl {
-					hStack.heightAnchor equalTo inputLabel.heightAnchor
-
-					inputView.widthAnchor equalTo inputView.heightAnchor
-					inputView.widthAnchor equalTo 7
-				}
-			}
-
-			val spacingView = hStack.addArrangedSubview(View())
-			solver.dsl {
-				spacingView.widthAnchor equalTo 8
-			}
-
-			block.outputs.getOrNull(i)?.let { output ->
-				val outputLabel = hStack.addArrangedSubview(Label(output.identifier.toString(), textAlignment = Label.TextAlignment.RIGHT))
-				val outputView = hStack.addArrangedSubview(TextureView(if (output.destinations.isEmpty()) emptyConnection else parameterConnection))
-				outputViews[output] = outputView
-				solver.dsl {
-					hStack.heightAnchor equalTo outputLabel.heightAnchor
-
-					outputView.widthAnchor equalTo outputView.heightAnchor
-					outputView.widthAnchor equalTo 7
-				}
-			}
-		}
-
-//		val pairs = block.inputs.zip(block.outputs)
-//		val remainingInputs = if (block.inputs.size > block.outputs.size) block.inputs.drop(block.outputs.size) else listOf()
-//		val remainingOutputs = if (block.outputs.size > block.inputs.size) block.outputs.drop(block.inputs.size) else listOf()
-//		for ((input, output) in pairs) {
-//			val hStack = addArrangedSubview(StackView(Axis.HORIZONTAL, Distribution.CENTER))
-//			val inputView = hStack.addArrangedSubview(TextureView(if (input.source == null) emptyConnection else parameterConnection))
-//			inputViews[input] = inputView
-//			val inputLabel = hStack.addArrangedSubview(Label(input.identifier.toString()))
-//			val spacingView = hStack.addArrangedSubview(View())
-//			hStack.addArrangedSubview(Label(output.identifier.toString()))
-////			outputViews[output] = hStack.addArrangedSubview(TextureView(if (output.destinations.isEmpty) emptyConnection else parameterConnection))
-//
-//			solver.dsl {
-//				hStack.heightAnchor equalTo inputLabel.heightAnchor
-//
-//				inputView.widthAnchor equalTo inputView.heightAnchor
-//				inputView.widthAnchor equalTo 7
-//
-//				spacingView.widthAnchor equalTo 8
-//			}
-//		}
-
-//		for (input in remainingInputs) {
-//			addArrangedSubview(Label(input.identifier.toString()))
-//		}
-//		for (output in remainingOutputs) {
-//			addArrangedSubview(Label(output.identifier.toString(), textAlignment = Label.TextAlignment.RIGHT))
-//		}
-
-		solver.dsl {
-			for (view in arrangedSubviews.drop(1)) {
-				widthAnchor.equalTo(view.widthAnchor, strength = STRONG)
-			}
-		}
-
-
 		updateDraggingConstraints()
 	}
 
@@ -163,8 +53,4 @@ class ProgramBlockView(val block: ProgramBlock): StackView(Axis.VERTICAL, Distri
 		window!!.layout()
 	}
 
-	override fun drawContent(mouse: Point, delta: Float) {
-		super.drawContent(mouse, delta)
-	}
-
 }

src/main/kotlin/net/shadowfacts/asmr/ui/ProgramCanvasView.kt

@@ -1,6 +1,5 @@
 package net.shadowfacts.asmr.ui
 
-import net.shadowfacts.asmr.program.ExecutableBlock
 import net.shadowfacts.asmr.program.Program
 import net.shadowfacts.asmr.program.ProgramBlock
 import net.shadowfacts.cacao.geometry.Point
@@ -29,43 +28,16 @@ class ProgramCanvasView(val program: Program): View() {
 	override fun drawContent(mouse: Point, delta: Float) {
 		super.drawContent(mouse, delta)
 
-
-		for ((block, view) in blocks) {
-			(block as? ExecutableBlock)?.executionFlow?.next?.let { next ->
-				blocks[next]?.let { nextView ->
-					val outgoing = view.outgoingExeuction!!
-					val incoming = nextView.incomingExecution!!
-
-					val start = outgoing.convert(outgoing.bounds.center, to = this)
-					val end = incoming.convert(outgoing.bounds.center, to = this)
-
-					RenderHelper.drawLine(start, end, zIndex, 5f, Color.GREEN)
-				}
-			}
-
-			for (input in block.inputs) {
-				if (input.source == null) continue
+		blocks.keys.forEach { block ->
+			block.inputs
+					.filter { it.source != null }
+					.forEach { input ->
+						val start = block.position
 						val source = input.source!!
+						val sourcePosition = source.block.position
+						val end = Point(sourcePosition.x + blocks[source.block]!!.bounds.width, sourcePosition.y)
 
-				blocks[source.block]?.let { sourceView ->
-					view.inputViews[input]?.let { inputView ->
-						sourceView.outputViews[source]?.let { outputView ->
-							val start = inputView.convert(inputView.bounds.center, to = this)
-							val end = outputView.convert(outputView.bounds.center, to = this)
-
-							RenderHelper.drawLine(start, end, zIndex, 5f, Color.RED)
-						}
-					}
-				}
-
-//				val start = block.position
-//				val sourcePosition = source.block.position
-//				val end = Point(sourcePosition.x + blocks[source.block]!!.bounds.width, sourcePosition.y)
-
-//				val inputView = view.inputViews[input]
-//				val outputView =
-//
-//				RenderHelper.drawLine(start, end, zIndex, 5f, Color.RED)
+						RenderHelper.drawLine(start, end, zIndex, 5f, Color.WHITE)
 					}
 		}
 	}

src/main/kotlin/net/shadowfacts/cacao/Window.kt

@@ -186,13 +186,14 @@ class Window(
 			return currentlyDraggedView.mouseDragged(startPoint, delta, mouseButton)
 		} else if (startPoint in viewController.view.frame) {
 			val startInView = Point(startPoint.x - viewController.view.frame.left, startPoint.y - viewController.view.frame.top)
-			var prevView: View? = null
+			lateinit var prevView: View
 			var view = viewController.view.subviewsAtPoint(startInView).maxBy(View::zIndex)
 			while (view != null && !view.respondsToDragging) {
 				prevView = view
 				val pointInView = viewController.view.convert(startInView, to = view)
 				view = view.subviewsAtPoint(pointInView).maxBy(View::zIndex)
 			}
+//			this.currentlyDraggedView = viewController.view.subviewsAtPoint(startInView).maxBy(View::zIndex)
 			this.currentDragReceiver = view ?: prevView
 			return this.currentDragReceiver?.mouseDragged(startPoint, delta, mouseButton) ?: false
 		}

src/main/kotlin/net/shadowfacts/cacao/util/Color.kt

@@ -26,9 +26,6 @@ data class Color(val red: Int, val green: Int, val blue: Int, val alpha: Int = 2
 		val CLEAR = Color(0, alpha = 0)
 		val WHITE = Color(0xffffff)
 		val BLACK = Color(0)
-		val RED = Color(0xff0000)
-		val GREEN = Color(0x00ff00)
-		val BLUE = Color(0x0000ff)
 	}
 
 }

src/main/kotlin/net/shadowfacts/cacao/util/RenderHelper.kt

@@ -117,7 +117,7 @@ object RenderHelper {
 	}
 
 	private fun BufferBuilder.color(color: Color): BufferBuilder {
-		color(color.red, color.green, color.blue, color.alpha)
+		color(color.alpha, color.red, color.green, color.blue)
 		return this
 	}
 

src/main/kotlin/net/shadowfacts/cacao/view/StackView.kt

@@ -19,7 +19,7 @@ import java.util.*
  * @param distribution The mode by which this stack lays out its children along the axis perpendicular to the
  * 						primary [axis].
  */
-open class StackView(
+class StackView(
 		val axis: Axis,
 		val distribution: Distribution = Distribution.FILL,
 		val spacing: Double = 0.0

src/test/kotlin/net/shadowfacts/asmr/program/ProgramTests.kt

@@ -16,11 +16,11 @@ class ProgramTests {
 		val one = program.addBlock(ConstantBlock(ProgramType.INT, 3))
 		val two = program.addBlock(ConstantBlock(ProgramType.INT, 7))
 		val multiply = program.addBlock(BinaryOperatorBlock(ProgramType.INT, BinaryOperatorBlock.Operation.MULTIPLY)) {
-			it.left.link(from = one.output)
-			it.right.link(from = two.output)
+			it.left.source = one.output
+			it.right.source = two.output
 		}
 
-		program.startBlock.executionFlow.link(multiply)
+		program.startBlock.nextExecutableBlock = multiply
 
 		program.execute()