Rendered some menu options

#7

6 files changed, 88 insertions, 1 deletions

@@ -47,6 +47,7 @@ add_executable(tanetane
   src/map.cpp
   src/font.cpp
   src/interpolation.cpp
+  src/menu.cpp
   src/transform_system.cpp
   src/camera_system.cpp
   src/animation_system.cpp
@@ -0,0 +1,12 @@
+#include "menu.h"
+
+std::vector<MenuItem> CreateMenu(const std::vector<MenuBuilder>& builders) {
+  std::vector<MenuItem> result;
+  result.reserve(builders.size());
+
+  for (const MenuBuilder& builder : builders) {
+    result.push_back(builder.Build());
+  }
+
+  return result;
+}
@@ -0,0 +1,37 @@
+#ifndef MENU_H_3F6E62B3
+#define MENU_H_3F6E62B3
+
+#include <memory>
+#include <string>
+#include <vector>
+
+enum class MenuType {
+  Command
+};
+
+struct MenuItem {
+  MenuType type = MenuType::Command;
+  std::string text;
+};
+
+class MenuBuilder {
+public:
+
+  MenuBuilder& Command(std::string text) {
+    result_.type = MenuType::Command;
+    result_.text = std::move(text);
+    return *this;
+  }
+
+  MenuItem Build() const {
+    return result_;
+  }
+
+private:
+
+  MenuItem result_;
+};
+
+std::vector<MenuItem> CreateMenu(const std::vector<MenuBuilder>& builders);
+
+#endif /* end of include guard: MENU_H_3F6E62B3 */
@@ -20,6 +20,12 @@ void MenuSystem::openPauseMenu() {
   openState_ = OpenState::Animating;
 
   game_.pauseGameplay();
+
+  menu_ = CreateMenu({
+    MenuBuilder().Command("Settings"),
+    MenuBuilder().Command("Return to Main Menu"),
+    MenuBuilder().Command("Resume Game")
+  });
 }
 
 void MenuSystem::closePauseMenu() {
@@ -1,8 +1,10 @@
 #ifndef MENU_SYSTEM_H_205861EC
 #define MENU_SYSTEM_H_205861EC
 
-#include "system.h"
+#include <vector>
 #include "interpolation.h"
+#include "menu.h"
+#include "system.h"
 
 class Game;
 
@@ -27,6 +29,8 @@ public:
 
   bool isMenuOpen() const { return openState_ == OpenState::Open; }
 
+  const std::vector<MenuItem>& getMenu() const { return menu_; }
+
 private:
 
   enum class OpenState {
@@ -38,6 +42,7 @@ private:
   Game& game_;
   Interpolation pauseAnimation_;
   OpenState openState_ = OpenState::Closed;
+  std::vector<MenuItem> menu_;
 };
 
 #endif /* end of include guard: MENU_SYSTEM_H_205861EC */
@@ -500,6 +500,32 @@ void Renderer::render(Game& game) {
     SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_NONE);
     SDL_SetRenderDrawColor(ren_.get(), 0, 0, 0, 255);
     SDL_RenderFillRect(ren_.get(), nullptr);
+
+    const int lineHeight = 16;
+    int totalHeight = menus.getMenu().size() * lineHeight;
+
+    int index = 0;
+    for (const MenuItem& menuItem : menus.getMenu()) {
+      switch (menuItem.type) {
+        case MenuType::Command: {
+          MessageCache output;
+          renderMessageLine(output, menuItem.text, game);
+
+          SDL_Rect dest {
+            (CANVAS_WIDTH - output.charIndexToWidth.back()) / 2,
+            (CANVAS_HEIGHT - totalHeight) / 2 + lineHeight * index,
+            MESSAGE_TEXT_WIDTH,
+            game.getFont().getCharacterHeight()
+          };
+
+          SDL_SetRenderTarget(ren_.get(), cameraTex.get());
+          SDL_RenderCopy(ren_.get(), output.renderedTex.get(), nullptr, &dest);
+
+          break;
+        }
+      }
+      index++;
+    }
   } else if (menus.getPauseAnimationProgress() > 0.0) {
     SDL_SetRenderTarget(ren_.get(), cameraTex.get());
     SDL_SetRenderDrawBlendMode(ren_.get(), SDL_BLENDMODE_NONE);