From: John Tsiombikas <nuclear@mutantstargoat.com>
Date: Mon, 3 Sep 2018 10:52:31 +0000 (+0300)
Subject: mouse cursor drawing part2
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosrtxon;a=commitdiff_plain;h=d6acf0b82bd026565f6b26bb00e42b4c126598dd

mouse cursor drawing part2
---

diff --git a/src/demo.c b/src/demo.c
index 7d927ea..06b33f3 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -111,41 +111,55 @@ void demo_draw(void)
 void draw_mouse_pointer(uint16_t *fb)
 {
 	uint16_t *dest = fb + mouse_y * FB_WIDTH + mouse_x;
-
-	DEST(0, 0) = 0xffff;
-	DEST(1, 1) = 0xffff;
-	DEST(2, 2) = 0xffff;
-	DEST(3, 3) = 0xffff;
-	DEST(4, 4) = 0xffff;
-	DEST(5, 5) = 0xffff;
-	DEST(6, 6) = 0xffff;
-	DEST(0, 1) = 0xffff;
-	DEST(0, 2) = 0xffff;
-	DEST(0, 3) = 0xffff;
-	DEST(0, 4) = 0xffff;
-	DEST(0, 5) = 0xffff;
-	DEST(0, 6) = 0xffff;
-	DEST(0, 7) = 0xffff;
-	DEST(0, 8) = 0xffff;
-	DEST(0, 9) = 0xffff;
-	DEST(1, 8) = 0xffff;
-	DEST(2, 7) = 0xffff;
-	DEST(3, 6) = 0xffff;
-	DEST(4, 6) = 0xffff;
-	DEST(5, 6) = 0xffff;
-	DEST(1, 2) = 0;
-	DEST(1, 3) = 0;
-	DEST(2, 3) = 0;
-	DEST(1, 4) = 0;
-	DEST(2, 4) = 0;
-	DEST(3, 4) = 0;
-	DEST(1, 5) = 0;
-	DEST(2, 5) = 0;
-	DEST(3, 5) = 0;
-	DEST(4, 5) = 0;
-	DEST(1, 6) = 0;
-	DEST(2, 6) = 0;
-	DEST(1, 7) = 0;
+	int ylines = FB_HEIGHT - mouse_y;
+
+	switch(ylines) {
+	default:
+	case 10:
+		DEST(0, 9) = 0xffff;
+	case 9:
+		DEST(0, 8) = 0xffff;
+		DEST(1, 8) = 0xffff;
+	case 8:
+		DEST(0, 7) = 0xffff;
+		DEST(2, 7) = 0xffff;
+		DEST(1, 7) = 0;
+	case 7:
+		DEST(6, 6) = 0xffff;
+		DEST(0, 6) = 0xffff;
+		DEST(3, 6) = 0xffff;
+		DEST(4, 6) = 0xffff;
+		DEST(5, 6) = 0xffff;
+		DEST(1, 6) = 0;
+		DEST(2, 6) = 0;
+	case 6:
+		DEST(5, 5) = 0xffff;
+		DEST(0, 5) = 0xffff;
+		DEST(1, 5) = 0;
+		DEST(2, 5) = 0;
+		DEST(3, 5) = 0;
+		DEST(4, 5) = 0;
+	case 5:
+		DEST(4, 4) = 0xffff;
+		DEST(0, 4) = 0xffff;
+		DEST(1, 4) = 0;
+		DEST(2, 4) = 0;
+		DEST(3, 4) = 0;
+	case 4:
+		DEST(3, 3) = 0xffff;
+		DEST(0, 3) = 0xffff;
+		DEST(1, 3) = 0;
+		DEST(2, 3) = 0;
+	case 3:
+		DEST(2, 2) = 0xffff;
+		DEST(0, 2) = 0xffff;
+		DEST(1, 2) = 0;
+	case 2:
+		DEST(1, 1) = 0xffff;
+		DEST(0, 1) = 0xffff;
+	case 1:
+		DEST(0, 0) = 0xffff;
+	}
 }
 
 static void change_screen(int idx)