Click Buttons On Mouse Down

docs/CHANGELOG.md

@@ -45,6 +45,7 @@
     * `Use Updated Title` (Enabled By Default)
     * `Hide Block Outline When GUI Is Hidden` (Enabled By Default)
     * `Fix Crash When Generating Certain Seed` (Enabled By Default)
+    * `Click Buttons On Mouse Down` (Enabled By Default)
   * Existing Functionality (All Enabled By Default)
     * `Fix Screen Rendering When Hiding HUD`
     * `Sanitize Usernames`

launcher/src/client/available-feature-flags

@@ -108,3 +108,4 @@ TRUE Improved Classic Title Positioning
 TRUE Use Updated Title
 TRUE Hide Block Outline When GUI Is Hidden
 TRUE Fix Crash When Generating Certain Seed
+TRUE Click Buttons On Mouse Down

mods/src/misc/ui.cpp

@@ -199,6 +199,41 @@ static void PauseScreen_init_injection(PauseScreen_init_t original, PauseScreen
     }
 }
 
+// Click Buttons On Mouse Down
+static void Screen_mouseClicked_injection(__attribute__((unused)) Screen_mouseClicked_t original, Screen *self,  int x, int y, const int param_1) {
+    if (param_1 == 1) {
+        for (Button *button : self->rendered_buttons) {
+            if (button->clicked(self->minecraft, x, y)) {
+                // Click
+                button->setPressed();
+                self->clicked_button = button;
+                self->buttonClicked(button);
+                // Play Sound
+                self->minecraft->sound_engine->playUI("random.click", 1, 1);
+            }
+        }
+    }
+}
+static void Screen_mouseReleased_injection(__attribute__((unused)) Screen_mouseReleased_t original, Screen *self,  int x, int y, const int param_1) {
+    if (param_1 == 1 && self->clicked_button) {
+        self->clicked_button->released(x, y);
+        self->clicked_button = nullptr;
+    }
+}
+// Fix Exiting Pause Screen
+static void Minecraft_grabMouse_injection(Minecraft_grabMouse_t original, Minecraft *self) {
+    original(self);
+    self->miss_time = 10000;
+}
+static void Minecraft_handleMouseDown_injection(Minecraft_handleMouseDown_t original, Minecraft *self, int param_1, bool can_destroy) {
+    // Call Original Method
+    original(self, param_1, can_destroy);
+    // Reset Miss Time
+    if (!can_destroy) {
+        self->miss_time = 0;
+    }
+}
+
 // Init
 void _init_misc_ui() {
     // Food Overlay
@@ -288,4 +323,12 @@ void _init_misc_ui() {
         uchar set_true_patch[] = {0x01, 0x30, 0xa0, 0x03}; // "moveq r3, #0x1"
         patch((void *) 0x4b93c, set_true_patch);
     }
+
+    // Click Buttons On Mouse Down
+    if (feature_has("Click Buttons On Mouse Down", server_disabled)) {
+        overwrite_calls(Screen_mouseClicked, Screen_mouseClicked_injection);
+        overwrite_calls(Screen_mouseReleased, Screen_mouseReleased_injection);
+        overwrite_calls(Minecraft_grabMouse, Minecraft_grabMouse_injection);
+        overwrite_calls(Minecraft_handleMouseDown, Minecraft_handleMouseDown_injection);
+    }
 }

symbols/src/game/Minecraft.def

@@ -26,8 +26,8 @@ virtual-method void selectLevel(const std::string &level_dir, const std::string
 property int screen_width = 0x20;
 property int screen_height = 0x24;
 property Options options = 0x3c;
-property LevelRenderer *levelrenderer = 0x150;
+property LevelRenderer *level_renderer = 0x150;
-property GameRenderer *gamerenderer = 0x154;
+property GameRenderer *game_renderer = 0x154;
 property GameMode *game_mode = 0x160;
 property Textures *textures = 0x164;
 property ScreenChooser screen_chooser = 0x168;
@@ -45,6 +45,8 @@ property int ticks_per_update = 0xc70;
 property bool is_creative_mode = 0xcb5;
 property PerfRenderer *perf_renderer = 0xcbc;
 property CommandServer *command_server = 0xcc0;
+property SoundEngine *sound_engine = 0x15c;
+property int miss_time = 0xca0;
 
 // Smooth Lighting
 static-property bool useAmbientOcclusion = 0x136b90;

symbols/src/gui/components/Button.def

@@ -5,6 +5,10 @@ constructor (int id, const std::string &text) = 0x1bc54;
 
 method int hovered(Minecraft *minecraft, int click_x, int click_y) = 0x1be2c;
 
+virtual-method bool clicked(Minecraft *minecraft, int click_x, int click_y) = 0x20;
+virtual-method void setPressed() = 0x28;
+virtual-method bool released(int click_x, int click_y) = 0x24;
+
 property int width = 0x14;
 property int height = 0x18;
 property int x = 0xc;

symbols/src/gui/screens/Screen.def

@@ -16,6 +16,7 @@ virtual-method void removed() = 0x2c;
 virtual-method void renderBackground() = 0x30;
 virtual-method void buttonClicked(Button *button) = 0x60;
 virtual-method void mouseClicked(int x, int y, int param_1) = 0x64;
+virtual-method void mouseReleased(int x, int y, int param_1) = 0x68;
 virtual-method void keyPressed(int key) = 0x6c;
 virtual-method void keyboardNewChar(char key) = 0x70;
 
@@ -26,3 +27,4 @@ property Minecraft *minecraft = 0x14;
 property std::vector<Button *> rendered_buttons = 0x18;
 property std::vector<Button *> selectable_buttons = 0x30;
 property Font *font = 0x40;
+property Button *clicked_button = 0x44;