treewars/sdlrenderer.cpp

#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;
    }

    // Background image first
    DrawUtils::draw(display, background, 0, 0);

    list<Vertex*> vertices = data.get_vertices();

    // Now paint on the targeting circle
    if (data.get_current_vertex() != NULL)
    {
	Vertex* v = data.get_current_vertex();
	DrawUtils::draw_circle_filled(display, v->x, v->y, range,
				      range_colour);
    }

    // Now paint each vertex, and any edges that it needs
    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<Vertex*>::iterator subcursor = v->neighbors.begin();
	     subcursor != v->neighbors.end(); subcursor++)
	{
	    Vertex* v1 = *subcursor;
	    DrawUtils::draw_line(display, v->x, v->y, v1->x, v1->y, 2,
				 v->colour);
	}
    }

    SDL_Flip(display);
}


void SDLRenderer::cleanup()
{
    SDL_FreeSurface(background);
    SDL_FreeSurface(display);
}