[Project] Friend Code

A Minecraft mod which adds friend codes, an easy way to play in the same
world with remote friends.

1 files changed, 111 insertions, 0 deletions

diff --git a/src/main/java/ganarchy/friendcode/client/FriendConnectScreen.java b/src/main/java/ganarchy/friendcode/client/FriendConnectScreen.java
new file mode 100644
index 0000000..53282d7
--- /dev/null
+++ b/src/main/java/ganarchy/friendcode/client/FriendConnectScreen.java
@@ -0,0 +1,111 @@
+package ganarchy.friendcode.client;
+
+import it.unimi.dsi.fastutil.booleans.BooleanConsumer;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.gui.screen.DirectConnectScreen;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.widget.ButtonWidget;
+import net.minecraft.client.gui.widget.TextFieldWidget;
+import net.minecraft.client.network.ServerInfo;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.screen.ScreenTexts;
+import net.minecraft.text.Text;
+import org.lwjgl.glfw.GLFW;
+
+import java.util.regex.Pattern;
+
+public class FriendConnectScreen extends Screen {
+    private static final Text ENTER_CODE_TEXT = Text.translatable("friendcode.enter_code");
+    /**
+     * Pattern for old-style b32 addresses.
+     */
+    // FIXME? maybe add support for b33 addresses?
+    private static final Pattern B32_PATTERN = Pattern.compile("^[A-Za-z2-7]{52}\\.b32\\.i2p$");
+    private final Screen parent;
+    private final ServerInfo serverEntry;
+    private final BooleanConsumer callback;
+    private TextFieldWidget addressField;
+    private ButtonWidget selectServerButton;
+
+    public FriendConnectScreen(Screen parent, BooleanConsumer callback, ServerInfo server) {
+        super(Text.translatable("friendcode.connect"));
+        this.parent = parent;
+        this.serverEntry = server;
+        this.callback = callback;
+    }
+
+    @Override
+    public void tick() {
+        this.addressField.tick();
+    }
+
+    @Override
+    public boolean keyPressed(int keyCode, int scanCode, int modifiers) {
+        if (this.selectServerButton.active && this.getFocused() == this.addressField && (keyCode == GLFW.GLFW_KEY_ENTER || keyCode == GLFW.GLFW_KEY_KP_ENTER)) {
+            this.saveAndClose();
+            return true;
+        }
+        return super.keyPressed(keyCode, scanCode, modifiers);
+    }
+
+    @Override
+    protected void init() {
+        this.addDrawableChild(new ButtonWidget(
+                this.width / 2 - 100,
+                20,
+                200,
+                20,
+                this.title,
+                button -> this.client.setScreen(new DirectConnectScreen(this.parent, this.callback, this.serverEntry))
+        ));
+        this.client.keyboard.setRepeatEvents(true);
+        this.selectServerButton = this.addDrawableChild(new ButtonWidget(this.width / 2 - 100, this.height / 4 + 96 + 12, 200, 20, Text.translatable("friendcode.select"), button -> this.saveAndClose()));
+        this.addDrawableChild(new ButtonWidget(this.width / 2 - 100, this.height / 4 + 120 + 12, 200, 20, ScreenTexts.CANCEL, button -> this.callback.accept(false)));
+        this.addressField = new TextFieldWidget(this.textRenderer, this.width / 2 - 100, 116, 200, 20, ENTER_CODE_TEXT);
+        this.addressField.setMaxLength(128);
+        this.addressField.setTextFieldFocused(true);
+        //this.addressField.setText(this.client.options.lastServer);
+        this.addressField.setChangedListener(text -> this.onAddressFieldChanged());
+        this.addSelectableChild(this.addressField);
+        this.setInitialFocus(this.addressField);
+        this.onAddressFieldChanged();
+    }
+
+    @Override
+    public void resize(MinecraftClient client, int width, int height) {
+        String string = this.addressField.getText();
+        this.init(client, width, height);
+        this.addressField.setText(string);
+    }
+
+    private void saveAndClose() {
+        this.client.setScreen(new FriendConnectingScreen(this.serverEntry, this.callback, this.addressField.getText()));
+//        this.serverEntry.address = this.addressField.getText();
+//        this.callback.accept(true);
+    }
+
+    @Override
+    public void close() {
+        this.client.setScreen(this.parent);
+    }
+
+    @Override
+    public void removed() {
+        this.client.keyboard.setRepeatEvents(false);
+        // FIXME store this.addressField.getText() somewhere.
+//        this.client.options.lastServer = this.addressField.getText();
+//        this.client.options.write();
+    }
+
+    private void onAddressFieldChanged() {
+        this.selectServerButton.active = B32_PATTERN.matcher(this.addressField.getText()).matches();
+    }
+
+    @Override
+    public void render(MatrixStack matrices, int mouseX, int mouseY, float delta) {
+        this.renderBackground(matrices);
+        FriendConnectScreen.drawTextWithShadow(matrices, this.textRenderer, ENTER_CODE_TEXT, this.width / 2 - 100, 100, 0xA0A0A0);
+        this.addressField.render(matrices, mouseX, mouseY, delta);
+        super.render(matrices, mouseX, mouseY, delta);
+    }
+}