Added export

.gitignore

@@ -2,4 +2,5 @@
 *jpg~
 *png~
 *gif~
-nasu6
+nasu6
+output.chr

build.sh

@@ -1,8 +1,14 @@
-
+# format code
 clang-format -i nasu6.c
 
+# remove old
 rm ./nasu6
 
-cc -std=c89 -DDEBUG -Wall -Wpedantic -Wshadow -Wextra -Werror=implicit-int -Werror=incompatible-pointer-types -Werror=int-conversion -Wvla -g -Og -fsanitize=address -fsanitize=undefined nasu6.c -I/usr/local/include -L/usr/local/lib -lSDL2 -o nasu6
+# debug
+# cc -std=c89 -DDEBUG -Wall -Wpedantic -Wshadow -Wextra -Werror=implicit-int -Werror=incompatible-pointer-types -Werror=int-conversion -Wvla -g -Og -fsanitize=address -fsanitize=undefined nasu6.c -I/usr/local/include -L/usr/local/lib -lSDL2 -o nasu6
+
+# build
+cc -std=c89 -Wall nasu6.c -I/usr/local/include -L/usr/local/lib -lSDL2 -o nasu6
 
+# run
 ./nasu6 sprite.chr

nasu6.c

@@ -55,10 +55,11 @@ draw(uint32_t* dst, int id, int color)
 	int px = (ti / 256) * 128;
 	int tx = (ti % 16) * 8;
 	int ty = ((ti / 16) * 8) % 128;
+	int odd = (ti + (ti / 16 + 2)) % 2 == 0;
 	Point p;
 	p.x = px + tx + (id % 8);
 	p.y = ty + ((id % 64) / 8);
-	pixel(dst, p, colors[color]);
+	pixel(dst, p, colors[odd && color == 0 ? 3 : color]);
 }
 
 void
@@ -111,6 +112,7 @@ edit(Brush* b)
 	    (p1.x / ZOOM) % 8,
 	    (p1.y / ZOOM) % 8,
 	    b->color);
+	SDL_SetWindowTitle(gWindow, "nasu*");
 	redraw();
 }
 
@@ -127,12 +129,16 @@ erase(Brush* b)
 		buffer[(id * 16) + i] = 0x00;
 		buffer[(id * 16) + i + 8] = 0x00;
 	}
+	SDL_SetWindowTitle(gWindow, "nasu*");
 	redraw();
 }
 
-void export(uint32_t* dst)
+void
+save(void)
 {
-	/* TODO: chr file export */
+	fwrite(buffer, sizeof(buffer), 1,
+	       fopen("output.chr", "wb"));
+	SDL_SetWindowTitle(gWindow, "nasu");
 }
 
 int
@@ -157,7 +163,7 @@ quit(void)
 }
 
 void
-handle_mouse(SDL_Event* event, Brush* b)
+mousehandler(SDL_Event* event, Brush* b)
 {
 	switch(event->type) {
 	case SDL_MOUSEBUTTONUP:
@@ -179,14 +185,14 @@ handle_mouse(SDL_Event* event, Brush* b)
 }
 
 void
-handle_keypress(SDL_Event* event, Brush* b)
+keyhandler(SDL_Event* event, Brush* b)
 {
 	switch(event->key.keysym.sym) {
 	case SDLK_ESCAPE:
 		quit();
 		break;
 	case SDLK_e:
-		export(pixels);
+		save();
 		break;
 	case SDLK_1:
 		b->color = 0;
@@ -204,14 +210,26 @@ handle_keypress(SDL_Event* event, Brush* b)
 }
 
 int
-load(FILE* f)
+load(char* path)
 {
+	FILE* f = fopen(path, "rb");
+	if(f == NULL)
+		return error("Load", "Invalid input file");
 	if(!fread(buffer, sizeof(buffer), 1, f))
-		return error("Invalid size file", "");
+		return error("Load", "Invalid file size");
 	redraw();
 	return 1;
 }
 
+void
+create(void)
+{
+	int i;
+	for(i = 0; i < 4096; ++i)
+		buffer[i] = 0x00;
+	redraw();
+}
+
 int
 init(void)
 {
@@ -250,20 +268,17 @@ main(int argc, char** argv)
 {
 	int ticknext = 0;
 	Brush brush;
-	FILE* f;
+	brush.color = 1;
 
 	if(!init())
 		return error("SDL", "failure");
 
-	if(argc < 2)
-		return error("Missing input file", "");
-
-	f = fopen(argv[1], "rb");
-
-	if(f == NULL)
-		return error("Invalid input file.", "");
+	/* IO */
 
-	load(f);
+	if(argc > 1)
+		load(argv[1]);
+	else
+		create();
 
 	/* main loop */
 
@@ -281,9 +296,9 @@ main(int argc, char** argv)
 			if(event.type == SDL_MOUSEBUTTONUP ||
 			   event.type == SDL_MOUSEBUTTONDOWN ||
 			   event.type == SDL_MOUSEMOTION) {
-				handle_mouse(&event, &brush);
+				mousehandler(&event, &brush);
 			} else if(event.type == SDL_KEYDOWN)
-				handle_keypress(&event, &brush);
+				keyhandler(&event, &brush);
 		}
 		SDL_RenderClear(gRenderer);
 		SDL_RenderCopy(gRenderer, gTexture, NULL, NULL);