feat: 掉落物类

app/src/main/java/net/imshit/aircraftwar/element/prop/BloodProp.kt

@@ -0,0 +1,14 @@
+package net.imshit.aircraftwar.element.prop
+
+import net.imshit.aircraftwar.logic.Games
+
+class BloodProp(
+    game: Games, initialX: Float, initialY: Float, speedX: Float, speedY: Float
+) : Props(
+    game = game, initialX = initialX, initialY = initialY, speedX = speedX, speedY = speedY
+) {
+    override val image = game.images.propBlood
+    override fun activate() {
+        game.heroAircraft.increaseHp(100)
+    }
+}

app/src/main/java/net/imshit/aircraftwar/element/prop/BombProp.kt

@@ -0,0 +1,15 @@
+package net.imshit.aircraftwar.element.prop
+
+import net.imshit.aircraftwar.logic.GameEvents
+import net.imshit.aircraftwar.logic.Games
+
+class BombProp(
+    game: Games, initialX: Float, initialY: Float, speedX: Float, speedY: Float
+) : Props(
+    game = game, initialX = initialX, initialY = initialY, speedX = speedX, speedY = speedY
+) {
+    override val image = game.images.propBomb
+    override fun activate() {
+        game.notify(GameEvents.BOMB_ACTIVATE)
+    }
+}

app/src/main/java/net/imshit/aircraftwar/element/prop/BulletProp.kt

@@ -0,0 +1,31 @@
+package net.imshit.aircraftwar.element.prop
+
+import net.imshit.aircraftwar.logic.Games
+import java.util.Timer
+import java.util.TimerTask
+import java.util.concurrent.atomic.AtomicInteger
+
+class BulletProp(
+    game: Games, initialX: Float, initialY: Float, speedX: Float, speedY: Float
+) : Props(
+    game = game, initialX = initialX, initialY = initialY, speedX = speedX, speedY = speedY
+) {
+    companion object {
+        private val usedCount = AtomicInteger(0)
+    }
+
+    override val image = game.images.propBullet
+
+    override fun activate() {
+        usedCount.getAndIncrement()
+        val heroAircraft = game.heroAircraft
+        heroAircraft.setShootNum(3)
+        Timer().schedule(object : TimerTask() {
+            override fun run() {
+                if (usedCount.decrementAndGet() <= 0) {
+                    heroAircraft.setShootNum(1)
+                }
+            }
+        }, 10000)
+    }
+}

app/src/main/java/net/imshit/aircraftwar/element/prop/Props.kt

@@ -0,0 +1,12 @@
+package net.imshit.aircraftwar.element.prop
+
+import net.imshit.aircraftwar.element.AbstractFlyingObject
+import net.imshit.aircraftwar.logic.Games
+
+sealed class Props(
+    game: Games, initialX: Float, initialY: Float, speedX: Float, speedY: Float
+) : AbstractFlyingObject(
+    game = game, initialX = initialX, initialY = initialY, speedX = speedX, speedY = speedY
+) {
+    abstract fun activate()
+}