more efficient rendering

Signed-off-by: Lizzy Fleckenstein <lizzy@vlhl.dev>

1 files changed, 20 insertions, 6 deletions

diff --git a/src/client.c b/src/client.c
index 964e91f..593e9ac 100644
--- a/src/client.c
+++ b/src/client.c
@@ -49,9 +49,13 @@ void gfx_clear_effects(client *c)
 	fprintf(c->termbuf, "\e[0m");
 }
 
-void gfx_set_color(client *c, color col, bool bg)
+void gfx_set_color(client *c, color col, bool bg, bool *has_old, color *old)
 {
+	if (*has_old && old->r == col.r && old->g == col.g && old->b == col.b)
+		return;
 	fprintf(c->termbuf, "\e[%u;2;%u;%u;%um", bg ? 48 : 38, col.r, col.g, col.b);
+	*has_old = true;
+	*old = col;
 }
 
 void gfx_clear(client *c)
@@ -143,28 +147,38 @@ void gfx_render(client *c, uint64_t dtime)
 	fprintf(c->termbuf, "%.*s\n", PSTR(c->server_motd));
 	for (size_t i = 0; i < c->players.len; i++)
 		fprintf(c->termbuf, "%.*s\n", PSTR(c->players.data[i].name));
+
+	bool has_bg = false;
+	bool has_fg = false;
+	color bg;
+	color fg;
+
 	for (size_t y = 0; y < c->map.bounds.size.y; y++) {
 		for (size_t x = 0; x < c->map.bounds.size.y; x++) {
 			uvec2 off = UVEC2(x, y);
 			vec2 pos = vec2_add(c->map.bounds.pos, CVEC2(off));
 
 			node_display dis = gfx_render_node(c, pos, chunk_index(c->map, off));
-			gfx_set_color(c, dis.bg, true);
+			gfx_set_color(c, dis.bg, true, &has_bg, &bg);
 			if (vec2_eq(pos, c->player_pos)) {
 				fprintf(c->termbuf, "🙂");
 			} else if (dis.texture) {
-				gfx_set_color(c, dis.fg, false);
+				gfx_set_color(c, dis.fg, false, &has_fg, &fg);
 				fprintf(c->termbuf, "%s", dis.texture);
 			} else {
 				fprintf(c->termbuf, "  ");
 			}
 		}
 		gfx_clear_effects(c);
+		has_bg = false;
+		has_fg = false;
 		fprintf(c->termbuf, "\n");
 	}
 	fflush(c->termbuf);
-	fwrite(c->termbuf_buf, 1, ftell(c->termbuf), stdout);
-	fflush(stdout);
+	fprintf(stderr, "size: %ld\n", ftell(c->termbuf));
+	write(STDOUT_FILENO, c->termbuf_buf, ftell(c->termbuf));
+	//fwrite(c->termbuf_buf, 1, ftell(c->termbuf), stdout);
+	//fflush(stdout);
 }
 
 void free_players(client *c)
@@ -189,7 +203,7 @@ void client_exit(client *c, int ret)
 	peer_free(&c->conn);
 	tcsetattr(STDIN_FILENO, TCSANOW, &c->oldtio);
 
-	fclose(c->termbuf);
+	if (c->termbuf) fclose(c->termbuf);
 	free(c->termbuf_buf);
 	gfx_alt_buffer(false);