src/gworm.cpp

   1 #include "app/Application.h"
   2 #include "app/SDL.h"
   3 #include "graphics/const.h"
   4 #include "graphics/Canvas.h"
   5 #include "graphics/Window.h"
   6 #include "world/Entity.h"
   7 #include "world/World.h"
   8
   9 #include <iostream>
  10
  11 using namespace gworm;
  12 using namespace std;
  13
  14
  15 namespace {
  16
  17 void make_planet(World &world, Vector<int> center, int radius) {
  18         const Vector<int> begin(0, 0);
  19         const Vector<int> end(world.Size());
  20         const int sqrad = radius * radius;
  21
  22         for (Vector<int> pos(begin); pos.y < end.y; ++pos.y) {
  23                 for (pos.x = 0; pos.x < end.x; ++pos.x) {
  24                         Vector<int> diff(center - pos);
  25                         int sqdist = Dot(diff, diff);
  26                         if (sqdist <= sqrad) {
  27                                 world.SetMass(pos, 1e10);
  28                                 world.SetColor(pos, Color(0x00, 0x00, 0xA0));
  29                         } else {
  30                                 world.SetMass(pos, 0);
  31                                 world.SetColor(pos, Color(0x00, 0x00, 0x00, 0x00));
  32                         }
  33                 }
  34         }
  35 }
  36
  37 }
  38
  39
  40 int main(int argc, const char *argv[]) {
  41         SDL sdl(SDL_INIT_VIDEO);
  42         Window win(
  43                 "gworm",
  44                 Window::POS_UNDEF,
  45                 Vector<int>(800, 600),
  46                 SDL_WINDOW_RESIZABLE
  47         );
  48         Canvas canv(win.CreateCanvas(
  49                 0
  50         ));
  51
  52         World world(Vector<int>(500, 500));
  53         make_planet(world, Vector<int>(250, 250), 220);
  54
  55         Entity orb;
  56         orb.vel = Vector<float>(-19, 19);
  57         orb.mass = 1;
  58         world.AddEntity(orb);
  59
  60         Entity coll;
  61         coll.pos = Vector<float>(250, -25);
  62         coll.vel = Vector<float>(-10, 0);
  63         coll.mass = 2;
  64         world.AddEntity(coll);
  65
  66         cout << "normal at top: " << world.NormalAt(Vector<float>(250, 30)) << endl;
  67         cout << "normal at left: " << world.NormalAt(Vector<float>(30, 250)) << endl;
  68
  69         Application app(canv, world);
  70         app.Run();
  71
  72         return 0;
  73 }