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use fmt;
use sdl2;
use math;
use net;
use net::dial;
def CHUNKSIZE = 512;
def NCHUNKS = 4;
export fn main() void = {
sdl2::SDL_Init(sdl2::SDL_INIT_VIDEO)!;
defer sdl2::SDL_Quit();
const win = sdl2::SDL_CreateWindow("hi", sdl2::SDL_WINDOWPOS_UNDEFINED, sdl2::SDL_WINDOWPOS_UNDEFINED, 640, 480, sdl2::SDL_WindowFlags::NONE)!;
defer sdl2::SDL_DestroyWindow(win);
const wsurf = sdl2::SDL_GetWindowSurface(win)!;
const offs: [_]pos = [
(0,0), (0,CHUNKSIZE), (CHUNKSIZE,0), (CHUNKSIZE,CHUNKSIZE),
];
let pictures: []picture = alloc([],NCHUNKS);
for (let i = 0z; i < NCHUNKS; i +=1){
const surf = sdl2::SDL_CreateRGBSurface(0,
CHUNKSIZE, CHUNKSIZE, 32, 0xff0000, 0xff00, 0xff, 0)!;
append(pictures, picture_from_surface(surf, offs[i]));
};
const conn = match(dial::dial("tcp","localhost","41460")) {
case let c: net::socket => yield c;
case let err: net::error =>
fmt::fatal("couldn't connect to server:",net::strerror(err));
};
let dstate = drawing_state {
drawing = false,
pos = (0,0),
pictures = pictures,
conn = conn,
};
let camera_pos: pos = (25, 50);
for (let i = 0z; i < 4; i += 1) {
const p = &dstate.pictures[i];
clear_picture(p, 0xffffff);
};
let quit = false;
let n = 0;
let lasttime = sdl2::SDL_GetTicks();
for (!quit) {
let ev = sdl2::event { ... };
for (sdl2::SDL_PollEvent(&ev)! == 1) switch (ev.event_type) {
case sdl2::SDL_EventType::QUIT => quit = true;
case sdl2::SDL_EventType::KEYDOWN =>
const keysym = ev.key.keysym.sym;
if (keysym == sdl2::SDL_Keycode::ESCAPE) quit = true;
case sdl2::SDL_EventType::MOUSEBUTTONDOWN,
sdl2::SDL_EventType::MOUSEBUTTONUP =>
const edata = ev.button;
dstate.pos = (edata.x + camera_pos.0, edata.y + camera_pos.1);
if (edata.button == 1)
dstate.drawing = (edata.state == 1);
case sdl2::SDL_EventType::MOUSEMOTION =>
const edata = ev.motion;
dstate.pos = (edata.x + camera_pos.0, edata.y + camera_pos.1);
case => void;
};
movement(&camera_pos);
do_drawing(&dstate);
for (let i = 0z; i < len(dstate.pictures); i+=1)
render_picture(&dstate.pictures[i], wsurf, camera_pos);
sdl2::SDL_UpdateWindowSurface(win)!;
n += 1;
sdl2::SDL_Delay(1000/60);
};
};
fn render_picture(pic: *picture, winsurf: *sdl2::SDL_Surface, camera_pos: pos) void = {
sdl2::SDL_BlitSurface(pic.surf, null, winsurf, &sdl2::SDL_Rect{
x = pic.pos.0 - camera_pos.0, y = pic.pos.1 - camera_pos.1, ...
})!;
};
def SPEED = 17;
def DIAG_SPEED = 12; // thereabouts
fn movement(pos: *pos) void = {
const kb = sdl2::SDL_GetKeyboardState();
let dx = 0;
let dy = 0;
if (kb[sdl2::SDL_Scancode::W]) dy -= 1;
if (kb[sdl2::SDL_Scancode::S]) dy += 1;
if (kb[sdl2::SDL_Scancode::A]) dx -= 1;
if (kb[sdl2::SDL_Scancode::D]) dx += 1;
let speed = SPEED;
if (dx != 0 && dy != 0) speed = DIAG_SPEED;
pos.0 += dx * speed;
pos.1 += dy * speed;
};
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