Add whatever I was working on for the last month

1 files changed, 176 insertions, 0 deletions

diff --git a/game/client/hotbar.cc b/game/client/hotbar.cc
new file mode 100644
index 0000000..a5f976c
--- /dev/null
+++ b/game/client/hotbar.cc
@@ -0,0 +1,176 @@
+#include "client/pch.hh"
+#include "client/hotbar.hh"
+
+#include "core/config.hh"
+#include "core/resource.hh"
+
+#include "shared/item_registry.hh"
+
+#include "client/glfw.hh"
+#include "client/globals.hh"
+#include "client/keybind.hh"
+#include "client/settings.hh"
+#include "client/status_lines.hh"
+#include "client/texture_gui.hh"
+
+constexpr static float ITEM_SIZE = 20.0f;
+constexpr static float ITEM_PADDING = 2.0f;
+constexpr static float SELECTOR_PADDING = 1.0f;
+constexpr static float HOTBAR_PADDING = 2.0f;
+
+unsigned int hotbar::active_slot = 0U;
+item_id hotbar::slots[HOTBAR_SIZE];
+
+static ConfigKeyBind hotbar_keys[HOTBAR_SIZE];
+
+static resource_ptr<TextureGUI> hotbar_background;
+static resource_ptr<TextureGUI> hotbar_selector;
+
+static ImU32 get_color_alpha(ImGuiCol style_color, float alpha)
+{
+    const auto &color = ImGui::GetStyleColorVec4(style_color);
+    return ImGui::GetColorU32(ImVec4(color.x, color.y, color.z, alpha));
+}
+
+static void update_hotbar_item(void)
+{
+    if(hotbar::slots[hotbar::active_slot] == NULL_ITEM_ID) {
+        status_lines::unset(STATUS_HOTBAR);
+        return;
+    }
+
+    if(auto info = item_registry::find(hotbar::slots[hotbar::active_slot])) {
+        status_lines::set(STATUS_HOTBAR, info->name, ImVec4(1.0f, 1.0f, 1.0f, 1.0f), 5.0f);
+        return;
+    }
+}
+
+static void on_glfw_key(const GlfwKeyEvent &event)
+{
+    if((event.action == GLFW_PRESS) && !globals::gui_screen) {
+        for(unsigned int i = 0U; i < HOTBAR_SIZE; ++i) {
+            if(hotbar_keys[i].equals(event.key)) {
+                hotbar::active_slot = i;
+                update_hotbar_item();
+                break;
+            }
+        }
+    }
+}
+
+static void on_glfw_scroll(const GlfwScrollEvent &event)
+{
+    if(!globals::gui_screen) {
+        if(event.dy < 0.0) {
+            hotbar::next_slot();
+            return;
+        }
+
+        if(event.dy > 0.0) {
+            hotbar::prev_slot();
+            return;
+        }
+    }
+}
+
+void hotbar::init(void)
+{
+    hotbar_keys[0].set_key(GLFW_KEY_1);
+    hotbar_keys[1].set_key(GLFW_KEY_2);
+    hotbar_keys[2].set_key(GLFW_KEY_3);
+    hotbar_keys[3].set_key(GLFW_KEY_4);
+    hotbar_keys[4].set_key(GLFW_KEY_5);
+    hotbar_keys[5].set_key(GLFW_KEY_6);
+    hotbar_keys[6].set_key(GLFW_KEY_7);
+    hotbar_keys[7].set_key(GLFW_KEY_8);
+    hotbar_keys[8].set_key(GLFW_KEY_9);
+
+    globals::client_config.add_value("hotbar.key.0", hotbar_keys[0]);
+    globals::client_config.add_value("hotbar.key.1", hotbar_keys[1]);
+    globals::client_config.add_value("hotbar.key.3", hotbar_keys[2]);
+    globals::client_config.add_value("hotbar.key.4", hotbar_keys[3]);
+    globals::client_config.add_value("hotbar.key.5", hotbar_keys[4]);
+    globals::client_config.add_value("hotbar.key.6", hotbar_keys[5]);
+    globals::client_config.add_value("hotbar.key.7", hotbar_keys[6]);
+    globals::client_config.add_value("hotbar.key.8", hotbar_keys[7]);
+    globals::client_config.add_value("hotbar.key.9", hotbar_keys[8]);
+
+    settings::add_keybind(10, hotbar_keys[0], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.0");
+    settings::add_keybind(11, hotbar_keys[1], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.1");
+    settings::add_keybind(12, hotbar_keys[2], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.2");
+    settings::add_keybind(13, hotbar_keys[3], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.3");
+    settings::add_keybind(14, hotbar_keys[4], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.4");
+    settings::add_keybind(15, hotbar_keys[5], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.5");
+    settings::add_keybind(16, hotbar_keys[6], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.6");
+    settings::add_keybind(17, hotbar_keys[7], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.7");
+    settings::add_keybind(18, hotbar_keys[8], settings_location::KEYBOARD_GAMEPLAY, "hotbar.slot.8");
+
+    hotbar_background = resource::load<TextureGUI>("textures/gui/hud_hotbar.png", TEXTURE_GUI_LOAD_CLAMP_S | TEXTURE_GUI_LOAD_CLAMP_T);
+    hotbar_selector = resource::load<TextureGUI>("textures/gui/hud_selector.png", TEXTURE_GUI_LOAD_CLAMP_S | TEXTURE_GUI_LOAD_CLAMP_T);
+
+    globals::dispatcher.sink<GlfwKeyEvent>().connect<&on_glfw_key>();
+    globals::dispatcher.sink<GlfwScrollEvent>().connect<&on_glfw_scroll>();
+}
+
+void hotbar::deinit(void)
+{
+    hotbar_background = nullptr;
+    hotbar_selector = nullptr;
+}
+
+void hotbar::layout(void)
+{
+    auto &style = ImGui::GetStyle();
+
+    auto item_size = ITEM_SIZE * globals::gui_scale;
+    auto hotbar_width = HOTBAR_SIZE * item_size;
+    auto hotbar_padding = HOTBAR_PADDING * globals::gui_scale;
+
+    auto viewport = ImGui::GetMainViewport();
+    auto draw_list = ImGui::GetForegroundDrawList();
+
+    // Draw the hotbar background image
+    auto background_start = ImVec2(0.5f * viewport->Size.x - 0.5f * hotbar_width, viewport->Size.y - item_size - hotbar_padding);
+    auto background_end = ImVec2(background_start.x + hotbar_width, background_start.y + item_size);
+    draw_list->AddImage(hotbar_background->handle, background_start, background_end);
+
+    // Draw the hotbar selector image
+    auto selector_padding_a = SELECTOR_PADDING * globals::gui_scale;
+    auto selector_padding_b = SELECTOR_PADDING * globals::gui_scale * 2.0f;
+    auto selector_start = ImVec2(background_start.x + hotbar::active_slot * item_size - selector_padding_a, background_start.y - selector_padding_a);
+    auto selector_end = ImVec2(selector_start.x + item_size + selector_padding_b, selector_start.y + item_size + selector_padding_b);
+    draw_list->AddImage(hotbar_selector->handle, selector_start, selector_end);
+
+    // Figure out item texture padding values
+    auto item_padding_a = ITEM_PADDING * globals::gui_scale;
+    auto item_padding_b = ITEM_PADDING * globals::gui_scale * 2.0f;
+
+    // Draw individual item textures in the hotbar
+    for(std::size_t i = 0; i < HOTBAR_SIZE; ++i) {
+        const auto info = item_registry::find(hotbar::slots[i]);
+
+        if((info == nullptr) || (info->cached_texture == nullptr)) {
+            // There's either no item in the slot
+            // or the item doesn't have a texture
+            continue;
+        }
+
+        const auto item_start = ImVec2(background_start.x + i * item_size + item_padding_a, background_start.y + item_padding_a);
+        const auto item_end = ImVec2(item_start.x + item_size - item_padding_b, item_start.y + item_size - item_padding_b);
+        draw_list->AddImage(info->cached_texture->handle, item_start, item_end);
+    }
+}
+
+void hotbar::next_slot(void)
+{
+    hotbar::active_slot += 1U;
+    hotbar::active_slot %= HOTBAR_SIZE;
+    update_hotbar_item();
+}
+
+void hotbar::prev_slot(void)
+{
+    hotbar::active_slot += HOTBAR_SIZE - 1U;
+    hotbar::active_slot %= HOTBAR_SIZE;
+    update_hotbar_item();
+}