partially working conveyor

assets/mods/basegame/items/itemid.csv

@@ -134,6 +134,7 @@ id;classname;tags
 # industrial
 2048;net.torvald.terrarum.modulebasegame.gameitems.ItemInductionMotor;FIXTURE,POWER,KINETIC
 2049;net.torvald.terrarum.modulebasegame.gameitems.ItemGearbox;FIXTURE,POWER,KINETIC
+2050;net.torvald.terrarum.modulebasegame.gameitems.ItemConveyorBelt;FIXTURE,KINETIC
 
 # data storage (pre-composed discs; 256)
 # 32768 is a reserved number for a BASEOBJECT disc (players can't produce own recordings... yet)

src/net/torvald/terrarum/modulebasegame/gameactors/ActorConveyors.kt

@@ -1,9 +1,14 @@
-package net.torvald.terrarum.gameactors
+package net.torvald.terrarum.modulebasegame.gameactors
 
+import com.badlogic.gdx.graphics.Color
 import com.badlogic.gdx.graphics.g2d.SpriteBatch
 import net.torvald.terrarum.App
+import net.torvald.terrarum.INGAME
 import net.torvald.terrarum.TerrarumAppConfiguration.TILE_SIZED
+import net.torvald.terrarum.gameactors.ActorWithBody
+import net.torvald.terrarum.inUse
 import net.torvald.terrarum.worlddrawer.WorldCamera
+import java.util.*
 import kotlin.math.*
 
 /**
@@ -29,6 +34,7 @@ class ActorConveyors : ActorWithBody {
         cy2 = 0.0
 
         r = 0.5 * TILE_SIZED.minus(2)
+        c = 0
 
         btx1 = 0.0
         bty1 = 0.0
@@ -47,6 +53,7 @@ class ActorConveyors : ActorWithBody {
     val y2: Int
 
     private val s: Double // belt length
+    private val c: Int // segment counts
 
     private val di: Double // inclination deg
     private val dd: Double // declination deg
@@ -89,6 +96,7 @@ class ActorConveyors : ActorWithBody {
         cy2 = (this.y2 + 0.5) * TILE_SIZED
 
         r = 0.5 * TILE_SIZED.minus(2)
+        c = (s / 8).roundToInt() * 2 // 4px segments rounded towards nearest even number
 
         btx1 = cx1 + r * sin(di)
         bty1 = cy1 + r * cos(di)
@@ -107,6 +115,8 @@ class ActorConveyors : ActorWithBody {
 
     override fun drawBody(frameDelta: Float, batch: SpriteBatch) {
 
+        App.shapeRender.inUse {
+            it.color = Color.RED
 
             // belt top
             drawLineOnWorld(btx1, bty1, btx2, bty2)
@@ -117,6 +127,7 @@ class ActorConveyors : ActorWithBody {
             // right arc
             drawArcOnWorld(cx2, cy2, r, di, Math.PI)
         }
+    }
 
     private fun drawLineOnWorld(x1: Double, y1: Double, x2: Double, y2: Double) {
         val w = 2.0f
@@ -128,11 +139,11 @@ class ActorConveyors : ActorWithBody {
     }
 
     private fun drawArcOnWorld(xc: Double, yc: Double, r: Double, arcStart: Double, arcDeg: Double) {
-        val w = 2.0f
         // dissect the circle
-        val pathLen = arcDeg * r
+//        val pathLen = arcDeg * r
         //// estimated number of segments. pathLen divided by sqrt(2)
-        val segments = Math.round(pathLen / Double.fromBits(0x3FF6A09E667F3BCDL)).coerceAtLeast(1L).toInt()
+//        val segments = Math.round(pathLen / Double.fromBits(0x3FF6A09E667F3BCDL)).coerceAtLeast(1L).toInt()
+        val segments = 12 * 8
 
         for (i in 0 until segments) {
             val degStart = (i.toDouble() / segments) * arcDeg + arcStart
@@ -146,4 +157,40 @@ class ActorConveyors : ActorWithBody {
             drawLineOnWorld(x1, y1, x2, y2)
         }
     }
+
+    /** Real time, in nanoseconds */
+    @Transient var spawnRequestedTime: Long = 0L
+        protected set
+
+    internal var actorThatInstalledThisFixture: UUID? = null
+
+    open fun spawn(installerUUID: UUID?): Boolean {
+        this.isVisible = true
+
+        val posXtl = minOf(x1, x2).toDouble()
+        val posYtl = minOf(y1, y2).toDouble()
+        val posXbr = maxOf(x1, x2).toDouble()
+        val posYbr = maxOf(y1, y2).toDouble()
+
+        this.hitbox.setFromTwoPoints(posXtl * TILE_SIZED, posYtl * TILE_SIZED, (posXbr+1) * TILE_SIZED, (posYbr+1) * TILE_SIZED)
+        this.setHitboxDimension(this.hitbox.width.toInt(), this.hitbox.height.toInt(), 0, 1)
+        this.intTilewiseHitbox.setFromTwoPoints(posXtl, posYtl, posXbr, posYbr)
+
+        // actually add this actor into the world
+        INGAME.queueActorAddition(this)
+        spawnRequestedTime = System.nanoTime()
+
+        actorThatInstalledThisFixture = installerUUID
+
+        //makeNoiseAndDust(posXtl, posYtl)
+
+        onSpawn()
+
+        return true
+    }
+
+    /**
+     * Callend whenever the fixture was spawned successfully.
+     */
+    open fun onSpawn() {}
 }

src/net/torvald/terrarum/modulebasegame/gameitems/FixtureItemBase.kt

@@ -104,10 +104,7 @@ open class FixtureItemBase(originalID: ItemID, val fixtureClassName: String) : G
         // return true when placed, false when cannot be placed
     }
 
-    override fun startSecondaryUse(actor: ActorWithBody, delta: Float) = mouseInInteractableRange(actor) { mwx, mwy, mtx, mty ->
-        (INGAME as TerrarumIngame).pickupFixtureOrDroppedItem(actor, delta, mwx, mwy, mtx, mty, false)
-        -1
-    }
+    override fun startSecondaryUse(actor: ActorWithBody, delta: Float) = fixturePickupFun(actor, delta)
 
     /**
      * Also see: [net.torvald.terrarum.modulebasegame.gameactors.FixtureBase.Companion]
@@ -128,5 +125,10 @@ open class FixtureItemBase(originalID: ItemID, val fixtureClassName: String) : G
                 TextureRegion(Texture(ModMgr.getGdxFile(module, path)))
             } as TextureRegion
         }
+
+        fun fixturePickupFun(actor: ActorWithBody, delta: Float) = mouseInInteractableRange(actor) { mwx, mwy, mtx, mty ->
+            (INGAME as TerrarumIngame).pickupFixtureOrDroppedItem(actor, delta, mwx, mwy, mtx, mty, false)
+            -1
+        }
     }
 }

src/net/torvald/terrarum/modulebasegame/gameitems/ItemConveyorBelt.kt

@@ -0,0 +1,95 @@
+package net.torvald.terrarum.modulebasegame.gameitems
+
+import net.torvald.terrarum.INGAME
+import net.torvald.terrarum.Point2i
+import net.torvald.terrarum.gameactors.ActorWithBody
+import net.torvald.terrarum.gameitems.GameItem
+import net.torvald.terrarum.gameitems.ItemID
+import net.torvald.terrarum.gameitems.mouseInInteractableRange
+import net.torvald.terrarum.modulebasegame.gameactors.ActorConveyors
+import net.torvald.terrarum.modulebasegame.gameactors.IngamePlayer
+
+/**
+ * Created by minjaesong on 2025-03-15.
+ */
+open class ItemConveyorBelt(originalID: ItemID) : GameItem(originalID) {
+    override var baseMass = 10.0
+    override var baseToolSize: Double? = null
+    override var inventoryCategory = Category.FIXTURE
+    override val canBeDynamic = false
+    override val materialId = ""
+    override var equipPosition = EquipPosition.HAND_GRIP
+
+    override var originalName = "CONVEYOR_BELT"
+
+
+    protected val AXLE_COUNT = 2
+
+
+    private var currentStatus = 0 // 0: initial, 1+: place n-th axle
+
+    private val occupiedPoints = HashSet<Point2i>()
+
+    override fun startPrimaryUse(actor: ActorWithBody, delta: Float) = mouseInInteractableRange(actor) { _, _, mtx, mty ->
+        val ret = when (currentStatus) {
+            0 -> placeFirstAxle(mtx, mty)
+            1 -> placeSecondAxleAndFinalise(mtx, mty)
+            else -> {
+                currentStatus = 0
+                -1L
+            }
+        }
+
+        currentStatus += 1
+
+        ret
+    }
+
+    override fun startSecondaryUse(actor: ActorWithBody, delta: Float): Long {
+        return when (currentStatus) {
+            0 -> FixtureItemBase.fixturePickupFun(actor, delta)
+            else -> {
+                currentStatus = -1
+                -1L
+            }
+        }
+    }
+
+
+    private fun placeFirstAxle(mx: Int, my: Int): Long {
+        occupiedPoints.add(Point2i(mx, my))
+        return 0L
+    }
+
+    private fun placeSecondAxleAndFinalise(mx: Int, my: Int): Long {
+        Point2i(mx, my).let { p2 ->
+            if (!occupiedPoints.contains(p2)) {
+                occupiedPoints.add(p2)
+            }
+            else {
+                currentStatus = -1
+                return 0L
+            }
+
+            // sort occupiedPoints by its x value
+            val points = occupiedPoints.toMutableList().also { it.sortBy { it.x } }.also { list ->
+                // check for ROUNDWORLD
+                val xMin = list[0].x
+                val xMax = list[1].x
+                // normalise it by making the x value for left spindle to negative
+                if (xMin >= 0 && xMin < INGAME.world.width / 2 && xMax >= INGAME.world.width / 2) {
+                    list[0].x -= INGAME.world.width
+                }
+            }
+
+            val conveyors = ActorConveyors(points[0].x, points[0].y, points[1].x, points[1].y)
+            conveyors.spawn((INGAME.actorNowPlaying as? IngamePlayer)?.uuid)
+        }
+
+        occupiedPoints.clear()
+        currentStatus = -1
+
+        return 1L
+    }
+}
+