feat: 添加英雄机射击策略

app/src/main/java/net/imshit/aircraftwar/element/shoot/hero/HeroDirectShootStrategy.kt

@@ -0,0 +1,15 @@
+package net.imshit.aircraftwar.element.shoot.hero
+
+import net.imshit.aircraftwar.element.bullet.HeroBullet
+import net.imshit.aircraftwar.logic.Games
+
+class HeroDirectShootStrategy : HeroShootStrategy {
+    override fun shoot(
+        game: Games, x: Float, y: Float, speedY: Float, power: Int
+    ): List<HeroBullet> {
+        val direction = -1
+        val bulletY = y + direction * 2
+        val bulletSpeedY = speedY + direction * 0.2f
+        return listOf(HeroBullet(game, x, bulletY, 0f, bulletSpeedY, power))
+    }
+}

app/src/main/java/net/imshit/aircraftwar/element/shoot/hero/HeroScatterShootStrategy.kt

@@ -0,0 +1,30 @@
+package net.imshit.aircraftwar.element.shoot.hero
+
+import net.imshit.aircraftwar.element.bullet.HeroBullet
+import net.imshit.aircraftwar.logic.Games
+
+class HeroScatterShootStrategy : HeroShootStrategy {
+    override fun shoot(
+        game: Games, x: Float, y: Float, speedY: Float, power: Int
+    ): List<HeroBullet> {
+        val direction = -1
+        val shootNum = 3
+        val bulletY = y + direction * 2
+        val bulletCenterSpeedX = 0f
+        val bulletCenterSpeedY = speedY + direction * 0.2f
+        return mutableListOf<HeroBullet>().apply {
+            for (i in 0 until shootNum) {
+                add(
+                    HeroBullet(
+                        game,
+                        x + (i * 2 - shootNum + 1) * 10,
+                        bulletY,
+                        bulletCenterSpeedX + (i * 2 - shootNum + 1) * 0.01f,
+                        bulletCenterSpeedY,
+                        power
+                    )
+                )
+            }
+        }.toList()
+    }
+}

app/src/main/java/net/imshit/aircraftwar/element/shoot/hero/HeroShootStrategy.kt

@@ -0,0 +1,9 @@
+package net.imshit.aircraftwar.element.shoot.hero
+
+import net.imshit.aircraftwar.element.bullet.HeroBullet
+import net.imshit.aircraftwar.element.shoot.ShootStrategy
+import net.imshit.aircraftwar.logic.Games
+
+interface HeroShootStrategy : ShootStrategy {
+    override fun shoot(game: Games, x: Float, y: Float, speedY: Float, power: Int): List<HeroBullet>
+}

app/src/main/java/net/imshit/aircraftwar/element/shoot/hero/HeroShootStrategyFactory.kt

@@ -0,0 +1,13 @@
+package net.imshit.aircraftwar.element.shoot.hero
+
+import net.imshit.aircraftwar.element.shoot.AbstractShootStrategyFactory
+
+class HeroShootStrategyFactory : AbstractShootStrategyFactory() {
+    override fun getStrategy(shootNum: Int): HeroShootStrategy {
+        return when (shootNum) {
+            1 -> HeroDirectShootStrategy()
+            3 -> HeroScatterShootStrategy()
+            else -> HeroDirectShootStrategy()
+        }
+    }
+}