pressure plates

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

@@ -2,6 +2,7 @@ package net.torvald.terrarum.modulebasegame.gameactors
 
 import net.torvald.spriteanimation.SheetSpriteAnimation
 import net.torvald.terrarum.INGAME
+import net.torvald.terrarum.Point2d
 import net.torvald.terrarum.TerrarumAppConfiguration
 import net.torvald.terrarum.gameactors.AVKey
 import net.torvald.terrarum.langpack.Lang
@@ -130,4 +131,82 @@ class FixtureLogicSignalPushbutton : Electric {
     override fun onInteract(mx: Double, my: Double) {
         triggeredTime = INGAME.world.worldTime.TIME_T
     }
+}
+
+class FixtureLogicSignalPressurePlate : Electric {
+
+    @Transient override val spawnNeedsFloor = true
+    @Transient override val spawnNeedsWall = false
+
+    constructor() : super(
+        BlockBox(BlockBox.NO_COLLISION, 2, 1),
+        nameFun = { Lang["ITEM_LOGIC_SIGNAL_PRESSURE_PLATE"] }
+    )
+
+    @Transient open val minMass = 2.0 // different types of switches can have different minimal mass?
+    @Transient open val holdTime = 30 // ticks
+
+
+    private var triggeredTime: Long? = null // null = off; number: TIME_T that the button was held down
+
+    private val state: Int
+        get() = (triggeredTime != null).toInt()
+
+    init {
+        val itemImage = FixtureItemBase.getItemImageFromSingleImage("basegame", "sprites/fixtures/signal_pressure_plate.tga")
+        val itemImage2 = FixtureItemBase.getItemImageFromSingleImage("basegame", "sprites/fixtures/signal_pressure_plate_emsv.tga")
+
+        density = 1400.0
+        setHitboxDimension(2*TerrarumAppConfiguration.TILE_SIZE, TerrarumAppConfiguration.TILE_SIZE, 0, 1)
+
+        makeNewSprite(TextureRegionPack(itemImage.texture, 2*TerrarumAppConfiguration.TILE_SIZE, TerrarumAppConfiguration.TILE_SIZE)).let {
+            it.setRowsAndFrames(2,1)
+            it.delays = floatArrayOf(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY)
+        }
+        makeNewSpriteEmissive(TextureRegionPack(itemImage2.texture, 2*TerrarumAppConfiguration.TILE_SIZE, TerrarumAppConfiguration.TILE_SIZE)).let {
+            it.setRowsAndFrames(2,1)
+            it.delays = floatArrayOf(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY)
+        }
+
+        actorValue[AVKey.BASEMASS] = FixtureLogicSignalEmitter.MASS
+
+
+        setWireEmitterAt(0, 0, "digital_bit")
+        // right side of the plate can be used to route signal wire
+    }
+
+    private fun updateState() {
+        val pointStart = Point2d(hitbox.startX + 5, hitbox.endY - 6)
+        val pointEnd = Point2d(hitbox.startX + 5 + 22, hitbox.endY)
+
+        val massSum = INGAME.getActorsAt(pointStart, pointEnd).filter {
+            it.physProp.usePhysics
+        }.sumOf { it.mass }
+
+        if (massSum >= minMass)
+            triggeredTime = INGAME.world.worldTime.TIME_T
+
+    }
+
+    override fun updateSignal() {
+        // detect and measure weight of actors
+        updateState()
+
+        // decide when to un-trigger
+        if (INGAME.world.worldTime.TIME_T - (triggeredTime ?: 0L) >= holdTime) {
+            triggeredTime = null
+        }
+
+        (sprite as SheetSpriteAnimation).currentRow = state
+        (spriteEmissive as SheetSpriteAnimation).currentRow = state
+        setWireEmissionAt(0, 0, Vector2(state.toDouble(), 0.0))
+    }
+
+    override fun reload() {
+        super.reload()
+
+        (sprite as SheetSpriteAnimation).currentRow = state
+        (spriteEmissive as SheetSpriteAnimation).currentRow = state
+        setWireEmissionAt(0, 0, Vector2(state.toDouble(), 0.0))
+    }
 }

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

@@ -61,4 +61,29 @@ class ItemLogicSignalPushbutton(originalID: ItemID) : FixtureItemBase(originalID
         (Terrarum.ingame!! as TerrarumIngame).selectedWireRenderClass = ""
     }
 
+}
+
+class ItemLogicSignalPressurePlate(originalID: ItemID) : FixtureItemBase(originalID, "net.torvald.terrarum.modulebasegame.gameactors.FixtureLogicSignalPressurePlate") {
+
+    override var dynamicID: ItemID = originalID
+    override var baseMass = FixtureLogicSignalEmitter.MASS
+    override val canBeDynamic = false
+    override val materialId = ""
+    init {
+        itemImage = CommonResourcePool.getAsItemSheet("basegame.items").get(9, 2)
+    }
+
+    override var baseToolSize: Double? = baseMass
+    override var originalName = "ITEM_LOGIC_SIGNAL_PRESSURE_PLATE"
+
+    override fun effectWhileEquipped(actor: ActorWithBody, delta: Float) {
+        super.effectWhileEquipped(actor, delta)
+        (Terrarum.ingame!! as TerrarumIngame).selectedWireRenderClass = "signal"
+    }
+
+    override fun effectOnUnequip(actor: ActorWithBody) {
+        super.effectOnUnequip(actor)
+        (Terrarum.ingame!! as TerrarumIngame).selectedWireRenderClass = ""
+    }
+
 }