diff options
Diffstat (limited to 'main.ha')
| -rw-r--r-- | main.ha | 44 |
1 files changed, 31 insertions, 13 deletions
@@ -2,6 +2,9 @@ use fmt; use sdl2; use math; +def CHUNKSIZE = 512; +def NCHUNKS = 4; + export fn main() void = { sdl2::SDL_Init(sdl2::SDL_INIT_VIDEO)!; defer sdl2::SDL_Quit(); @@ -11,19 +14,30 @@ export fn main() void = { const wsurf = sdl2::SDL_GetWindowSurface(win)!; - const xsurf = sdl2::SDL_CreateRGBSurface(0, - 512, 512, 32, 0xff0000, 0xff00, 0xff, 0)!; + 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])); + }; let dstate = drawing_state { drawing = false, pos = (0,0), - picture = &picture_from_surface(xsurf) + pictures = pictures, }; let camera_pos: pos = (25, 50); - clear_picture(dstate.picture, 0xffffff); - outline_picture(dstate.picture); + for (let i = 0z; i < 4; i += 1) { + const p = &dstate.pictures[i]; + clear_picture(p, 0xffffff); + outline_picture(p); + }; let quit = false; let n = 0; @@ -38,22 +52,20 @@ export fn main() void = { case sdl2::SDL_EventType::MOUSEBUTTONDOWN, sdl2::SDL_EventType::MOUSEBUTTONUP => const edata = ev.button; - dstate.pos = (edata.x, edata.y); + 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, edata.y); + dstate.pos = (edata.x + camera_pos.0, edata.y + camera_pos.1); case => void; }; movement(&camera_pos); - do_drawing(&dstate); - - sdl2::SDL_BlitSurface(xsurf, null, wsurf, &sdl2::SDL_Rect { - x = camera_pos.0, y = camera_pos.1, ... - })!; + + for (let i = 0z; i < len(dstate.pictures); i+=1) + render_picture(&dstate.pictures[i], wsurf, camera_pos); sdl2::SDL_UpdateWindowSurface(win)!; n += 1; @@ -61,6 +73,13 @@ export fn main() void = { }; }; +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 @@ -80,4 +99,3 @@ fn movement(pos: *pos) void = { pos.1 += dy * speed; }; - |