Initial commit

1 files changed, 179 insertions, 0 deletions

diff --git a/menu.c b/menu.c
new file mode 100644
index 0000000..4aae11f
--- /dev/null
+++ b/menu.c
@@ -0,0 +1,179 @@
+#include "game.h"
+
+struct Widget *
+add_button(unsigned char layer, const char *label, int x, int y,
+	   void (*callback)(struct Widget *))
+{
+  SDL_Surface *surface;
+  SDL_Color c = {255, 255, 255, 255};
+
+  struct Resources *res = &game->resources;
+  struct Layer *l = &game->layers[layer];
+  struct Widget *w;
+
+  w = &l->widgets[l->num_widgets ++];
+
+  w->callback = callback;
+  w->is_blended = true;
+
+  surface = TTF_RenderText_Solid(res->font, label, c);
+  TTF_SizeText(res->font, label, &w->rect.w, &w->rect.h);
+  w->texture = SDL_CreateTextureFromSurface(game->renderer, surface);
+  res->textures[res->num_textures ++] = w->texture;
+  SDL_FreeSurface(surface);
+
+  if(x == POSITION_CENTERED)
+    w->rect.x = (game->width / 2) - (w->rect.w / 2);
+  else
+    w->rect.x = x;
+
+  if(y == POSITION_CENTERED)
+    w->rect.y = (game->height / 2) - (w->rect.h / 2);
+  else
+    w->rect.y = y;
+
+  return w;
+}
+
+void set_color(struct Widget *w, struct Color color)
+{
+  w->color = color;
+  w->on_hover_color = color;
+  w->default_color = color;
+}
+
+struct Widget *add_image(unsigned char layer, SDL_Texture *image,
+			 int x, int y, int w, int h)
+{
+  struct Layer *l = &game->layers[layer];
+  struct Widget *widget;
+
+  widget = &l->widgets[l->num_widgets ++];
+
+  widget->callback = NULL;
+  widget->texture = image;
+
+  widget->is_blended = false;
+
+  widget->rect.w = w;
+  widget->rect.h = h;
+
+  widget->color = (struct Color){255, 255, 255};
+  widget->default_color = widget->color;
+
+  if(x == POSITION_CENTERED)
+    widget->rect.x = (game->width / 2) - (widget->rect.w / 2);
+  else
+    widget->rect.x = x;
+
+  if(y == POSITION_CENTERED)
+    widget->rect.y = (game->height / 2) - (widget->rect.h / 2);
+  else
+    widget->rect.y = y;
+
+  return widget;
+}
+
+void process_widget_events(unsigned char type, int x, int y)
+{
+  int i;
+  struct Layer *layer = &game->layers[game->current_layer];
+  struct Widget *widget;
+
+  for(i = 0; i < layer->num_widgets; i ++)
+    {
+      widget = &layer->widgets[i];
+
+      if(x > widget->rect.x && x < widget->rect.x + widget->rect.w
+	 && y > widget->rect.y && y < widget->rect.y + widget->rect.h)
+	{
+	  widget->is_hover = true;
+	  widget->color = widget->on_hover_color;
+
+	  if(widget->callback != NULL && type == MOUSE_BUTTON)
+	    widget->callback(widget);
+	}
+      else
+	{
+	  widget->is_hover = false;
+	  widget->color = widget->default_color;
+	}
+    }
+}
+
+struct Widget *add_label(unsigned char layer,
+			 const char *text,
+			 struct Color color,
+			 int x, int y)
+{
+  SDL_Surface *surface;
+  SDL_Color c = (SDL_Color){color.r, color.g, color.b, 255};
+
+  struct Resources *res = &game->resources;
+  struct Layer *l = &game->layers[layer];
+  struct Widget *w;
+
+  w = &l->widgets[l->num_widgets ++];
+
+  w->callback = NULL;
+  w->is_blended = true;
+
+  w->initial_x = x;
+  w->initial_y = y;
+  w->default_color = color;
+  w->color = color;
+  w->on_hover_color = color;
+
+  surface = TTF_RenderText_Solid(res->font, text, c);
+  TTF_SizeText(res->font, text, &w->rect.w, &w->rect.h);
+
+  w->texture = SDL_CreateTextureFromSurface(game->renderer, surface);
+  res->textures[res->num_textures ++] = w->texture;
+
+  SDL_FreeSurface(surface);
+
+  if(x == POSITION_CENTERED)
+    w->rect.x = (game->width / 2) - (w->rect.w / 2);
+  else
+    w->rect.x = x;
+
+  if(y == POSITION_CENTERED)
+    w->rect.y = (game->height / 2) - (w->rect.h / 2);
+  else
+    w->rect.y = y;
+
+  return w;
+}
+
+void set_text(struct Widget *w, const char *text)
+{
+  int i;
+  SDL_Surface *surface;
+  SDL_Texture *texture;
+  SDL_Color c = (SDL_Color){w->default_color.r,
+			    w->default_color.g,
+			    w->default_color.b,
+			    255};
+
+  surface = TTF_RenderText_Solid(game->resources.font, text, c);
+  TTF_SizeText(game->resources.font, text, &w->rect.w, &w->rect.h);
+  texture = SDL_CreateTextureFromSurface(game->renderer, surface);
+  SDL_FreeSurface(surface);
+
+  for(i = 0; i < game->resources.num_textures; i ++)
+    {
+      if(game->resources.textures[i] == w->texture)
+	{
+	  SDL_DestroyTexture(w->texture);
+	  game->resources.textures[i] = texture;
+	}
+    }
+
+  w->texture = texture;
+
+  if(w->initial_x == POSITION_CENTERED)
+    w->rect.x = (game->width / 2) - (w->rect.w / 2);
+
+  if(w->initial_y == POSITION_CENTERED)
+    w->rect.y = (game->height / 2) - (w->rect.h / 2);
+}