Left some important files out of the repo

sdlrenderer.cpp

@@ -0,0 +1,87 @@
+#include "sdlrenderer.h"
+#include "drawutils.h"
+#include "debug.h"
+
+SDLRenderer::SDLRenderer()
+{
+    display = NULL;
+    background = NULL;
+}
+
+
+bool SDLRenderer::init()
+{
+    display = SDL_SetVideoMode(1024,768,32, SDL_HWSURFACE | SDL_DOUBLEBUF);
+    if (display == NULL)
+    {
+#ifdef DEBUG
+	std::cerr << "SDLRenderer::init(): error: Couldn't create main surface\n";
+#endif
+	return false;
+    }
+
+    background = DrawUtils::load("background.bmp");
+
+    if (background == NULL)
+    {
+#ifdef DEBUG
+	std::cerr << "SDLRenderer::init(): error: Couldn't load background image\n";
+#endif
+	return false;
+    }
+
+    return true;
+}
+
+
+void SDLRenderer::render(GameData& data)
+{
+    int range = data.get_range();
+    int range_colour = 0x888888;
+
+    switch(data.get_mode())
+    {
+    case MODE_MOVE:
+	range_colour = 0x0000ff;
+	break;
+    case MODE_ATTACK:
+	range_colour = 0xff0000;
+	break;
+    }
+
+    DrawUtils::draw(display, background, 0, 0);
+
+    list<Vertex*> vertices = data.get_vertices();
+    list<Edge> edges = data.get_edges();
+
+    if (data.get_current_vertex() != NULL)
+    {
+	Vertex* v = data.get_current_vertex();
+	DrawUtils::draw_circle_filled(display, v->x, v->y, range, range_colour);
+    }
+
+    for (list<Vertex*>::iterator cursor = vertices.begin();
+	 cursor != vertices.end(); cursor++)
+    {
+	Vertex v = *(*cursor);
+	DrawUtils::draw_circle_filled(display, v.x, v.y, v.r,
+				      v.colour);
+    }
+
+    for (list<Edge>::iterator cursor = edges.begin();
+	 cursor != edges.end(); cursor++)
+    {
+	Edge e = *cursor;
+	DrawUtils::draw_line(display, e.a->x, e.a->y, e.b->x, e.b->y, 2,
+			     e.a->colour);
+    }
+
+    SDL_Flip(display);
+}
+
+
+void SDLRenderer::cleanup()
+{
+    SDL_FreeSurface(background);
+    SDL_FreeSurface(display);
+}

sdlrenderer.h

@@ -0,0 +1,36 @@
+/* This class handles all of the messy details of SDL rendering
+ * We typically want to call init() when we start up, and 
+ * render() when we want to render a frame
+ *
+ * Note that this class does NOT call SDL_init() - that should be
+ * done before init()ing here
+ *
+ * cleanup() does the SDL destructor work - call it explicitly in case
+ * we want to keep the object around and re-init it...
+ */
+
+#ifndef _SDLRENDERER_H_
+#define _SDLRENDERER_H_
+
+#include "gamedata.h"
+#include <SDL.h>
+
+class SDLRenderer
+{
+ public:
+    SDLRenderer();
+
+    bool init();
+    void render(GameData& data);
+    void cleanup();
+
+ private:
+    // Main surface - our window
+    SDL_Surface* display;
+
+    // surfaces containing textures to draw
+    SDL_Surface* background;
+
+};
+
+#endif