mouse latch class

src/net/torvald/terrarum/DefaultConfig.kt

@@ -21,7 +21,7 @@ object DefaultConfig {
             "screenheight" to TerrarumScreenSize.defaultH,
             "fullscreen" to false,
             "atlastexsize" to 2048,
-            "savegamecomp" to "zstd",
+            "savegamecomp" to "snappy",
 
             "audio_buffer_size" to 512,
             "audio_dynamic_source_max" to 128,

src/net/torvald/terrarum/MouseLatch.kt

@@ -1,7 +0,0 @@
-package net.torvald.terrarum
-
-/**
- * Created by minjaesong on 2024-01-10.
- */
-class MouseLatch {
-}

src/net/torvald/terrarum/ui/MouseLatch.kt

@@ -0,0 +1,56 @@
+package net.torvald.terrarum.ui
+
+import com.badlogic.gdx.Gdx
+import net.torvald.terrarum.App
+import java.util.concurrent.atomic.AtomicBoolean
+
+/**
+ * Created by minjaesong on 2024-01-10.
+ */
+class MouseLatch(val button: List<Int> = listOf(App.getConfigInt("config_mouseprimary"))) {
+
+    private val status = AtomicBoolean()
+
+    /**
+     * Performs the `action` when the mouse-latch is unlatched and any of the specified buttons are down. After the `action` has run, the unlatch check will be done immediately.
+     *
+     * @param action what to do when the mouse is clicked. The latch will be latched right before the action runs.
+     * Return `false` to unlatch the mouse-latch. Returning null WILL latch it.
+     */
+    fun latchSelectively(action: () -> Boolean?) {
+        if (isNotLatched() && button.any { Gdx.input.isButtonPressed(it) }) {
+            status.set(true)
+            status.set(action() ?: true)
+        }
+
+        if (isLatched() && button.none { Gdx.input.isButtonPressed(it) }) {
+            status.set(false)
+        }
+    }
+
+    /**
+     * Performs the `action` when the mouse-latch is unlatched and any of the specified buttons are down. After the `action` has run, the unlatch check will be done immediately.
+     *
+     * @param action what to do when the mouse is clicked. The mouse-latch will be latched right before the action runs
+     */
+    fun latch(action: () -> Unit) {
+        if (isNotLatched() && button.any { Gdx.input.isButtonPressed(it) }) {
+            status.set(true)
+            action()
+        }
+
+        if (isLatched() && button.none { Gdx.input.isButtonPressed(it) }) {
+            status.set(false)
+        }
+    }
+
+    fun unlatch() {
+        if (button.none { Gdx.input.isButtonPressed(it) }) {
+            status.set(false)
+        }
+    }
+
+    fun isLatched() = status.get()
+    fun isNotLatched() = !status.get()
+
+}