3 files changed, 29 insertions(+), 22 deletions(-)

M README.md
M chr6.c
A export.chr

@@ 10,21 10,27 @@ To build chr6, you must have [SDL2](https://wiki.libsdl.org/).
 sudo apt-get install libsdl2-dev
 ```
 
+## I/O
+
+To resume working on a tileset:
+
+```
+./chr6 export.chr
+```
+
 ## Controls
 
 ### General
 
-- `E` Export
+- `E` Export(export.chr)
+- `R` Render(render.bmp)
 - `H` Toggle Guides
 
 ### Select
 
-- `1` Color1
-- `2` Color2
-- `3` Color3
-- `4` Color4
+- `TAB` Cycle between colors
 
 ### Paint
 
 - `mouse1` Paint
-- `mouse2` Erase
+- `mouse1+mouse2` Erase

@@ 252,7 252,7 @@ create(void)
 void
 save(Brush* b)
 {
-	FILE* f = fopen("output.chr", "wb");
+	FILE* f = fopen("export.chr", "wb");
 	if(!fwrite(buffer, sizeof(buffer), 1, f))
 		error("Save", "Invalid output file");
 	fclose(f);


@@ 267,7 267,7 @@ load(char* path)
 	if(f == NULL)
 		error("Load", "Invalid input file");
 	if(!fread(buffer, sizeof(buffer), 1, f))
-		error("Load", "Invalid file size");
+		error("Load", "Invalid input size");
 	fclose(f);
 	redraw(pixels);
 }


@@ 276,6 276,8 @@ void
 render()
 {
 	SDL_Surface* surface = SDL_GetWindowSurface(gWindow);
+	GUIDES = 0;
+	redraw(pixels);
 	SDL_RenderReadPixels(gRenderer, NULL, SDL_PIXELFORMAT_ARGB8888, surface->pixels, surface->pitch);
 	SDL_SaveBMP(surface, "render.bmp");
 	SDL_FreeSurface(surface);


@@ 300,32 302,32 @@ domouse(SDL_Event* event, Brush* b)
 {
 	switch(event->type) {
 	case SDL_MOUSEBUTTONUP:
-		if(event->button.button == SDL_BUTTON_LEFT)
+		if(event->button.button == SDL_BUTTON_LEFT) {
 			b->down = 0;
+			setpt(&b->prev, 0, 0);
+		}
 		if(event->button.button == SDL_BUTTON_RIGHT)
 			b->erase = 0;
-		setpt(&b->prev, 0, 0);
 		break;
 	case SDL_MOUSEBUTTONDOWN:
-		if(event->button.button == SDL_BUTTON_LEFT)
+		if(event->button.button == SDL_BUTTON_LEFT) {
 			b->down = 1;
+			setpt(&b->prev,
+			      (event->motion.x - PAD) / ZOOM,
+			      (event->motion.y - PAD) / ZOOM);
+		}
 		if(event->button.button == SDL_BUTTON_RIGHT)
 			b->erase = 1;
-		setpt(&b->prev,
-		      (event->motion.x - PAD) / ZOOM,
-		      (event->motion.y - PAD) / ZOOM);
 	case SDL_MOUSEMOTION:
 		if(b->down) {
 			setpt(&b->pos,
 			      (event->motion.x - PAD) / ZOOM,
 			      (event->motion.y - PAD) / ZOOM);
-			if(dispt(&b->pos, &b->prev) > ZOOM * 2) {
-				if(b->mode == 0)
-					line(&b->prev, &b->pos, b->erase ? 0 : b->color);
-				else
-					fill(b, b->mode, b->size, b->pos, b->erase ? 0 : b->color);
-				setpt(&b->prev, b->pos.x, b->pos.y);
-			}
+			if(b->mode == 0)
+				line(&b->prev, &b->pos, b->erase ? 0 : b->color);
+			else
+				fill(b, b->mode, b->size, b->pos, b->erase ? 0 : b->color);
+			setpt(&b->prev, b->pos.x, b->pos.y);
 		}
 		break;
 	}


@@ 411,7 413,6 @@ int
 main(int argc, char** argv)
 {
 	int ticknext = 0;
-	Point a, b;
 	Brush brush;
 	brush.down = 0;
 	brush.color = 1;