From 808e021c2cf261ad01cd42c9f5617b4e00c80753 Mon Sep 17 00:00:00 2001
From: John Tsiombikas <nuclear@member.fsf.org>
Date: Sat, 17 Jun 2023 02:01:46 +0300
Subject: [PATCH] fixed simple draw_cursor

---
 src/app.c         |    2 --
 src/dos/main.c    |   38 +++++++++++++++++++++++++++++++++++++-
 src/modern/main.c |   26 +++++++++++++++++++++++++-
 3 files changed, 62 insertions(+), 4 deletions(-)

diff --git a/src/app.c b/src/app.c
index 8676218..6f7e250 100644
--- a/src/app.c
+++ b/src/app.c
@@ -154,8 +154,6 @@ void app_display(void)
 	time_msec = app_getmsec();
 
 	cur_scr->display();
-
-	app_swap_buffers();
 }
 
 void app_reshape(int x, int y)
diff --git a/src/dos/main.c b/src/dos/main.c
index a11de39..e167a21 100644
--- a/src/dos/main.c
+++ b/src/dos/main.c
@@ -28,6 +28,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include "options.h"
 #include "cpuid.h"
 
+static void draw_cursor(int x, int y);
+
 static uint32_t *vmem;
 static int quit, disp_pending;
 
@@ -55,7 +57,9 @@ int main(int argc, char **argv)
 		return 1;
 	}
 	set_mouse_limits(0, 0, 639, 479);
-	set_mouse(320, 240);
+	mx = 320;
+	my = 240;
+	set_mouse(mx, my);
 
 	add_log_file("retroray.log");
 
@@ -80,16 +84,31 @@ int main(int argc, char **argv)
 	disp_pending = 1;
 
 	app_reshape(win_width, win_height);
+	read_mouse(&mx, &my);
 
 	for(;;) {
 		int key;
+
+		if(kb_isdown(KEY_ALT)) {
+			modkeys |= KEY_MOD_ALT;
+		}
+		if(kb_isdown(KEY_CTRL)) {
+			modkeys |= KEY_MOD_CTRL;
+		}
+		if(kb_isdown(KEY_SHIFT)) {
+			modkeys |= KEY_MOD_SHIFT;
+		}
+
 		while((key = kb_getkey()) != -1) {
 			app_keyboard(key, 1);
 			if(quit) goto break_evloop;
 		}
 
+		draw_cursor(mx, my);
+
 		bnstate = read_mouse(&mx, &my);
 		bndiff = bnstate ^ prev_bnstate;
+		prev_bnstate = bnstate;
 
 		if(bndiff & 1) app_mouse(0, bnstate & 1, mx, my);
 		if(bndiff & 2) app_mouse(1, bnstate & 2, mx, my);
@@ -99,6 +118,9 @@ int main(int argc, char **argv)
 			disp_pending = 0;
 			app_display();
 		}
+
+		draw_cursor(mx, my);
+		app_swap_buffers();
 	}
 
 break_evloop:
@@ -140,3 +162,17 @@ void app_fullscreen(int fs)
 void app_vsync(int vsync)
 {
 }
+
+static void draw_cursor(int x, int y)
+{
+	int i;
+	uint32_t *fbptr = framebuf + y * win_width + x;
+
+	for(i=0; i<3; i++) {
+		int offs = i + 1;
+		if(y > offs) fbptr[-win_width * offs] ^= 0xffffff;
+		if(y < win_height - offs - 1) fbptr[win_width * offs] ^= 0xffffff;
+		if(x > offs) fbptr[-offs] ^= 0xffffff;
+		if(x < win_width - offs - 1) fbptr[offs] ^= 0xffffff;
+	}
+}
diff --git a/src/modern/main.c b/src/modern/main.c
index 65b5eed..e60329f 100644
--- a/src/modern/main.c
+++ b/src/modern/main.c
@@ -22,6 +22,7 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include "app.h"
 #include "logger.h"
 
+static void display(void);
 static void reshape(int x, int y);
 static void keydown(unsigned char key, int x, int y);
 static void keyup(unsigned char key, int x, int y);
@@ -30,6 +31,7 @@ static void skeyup(int key, int x, int y);
 static void mouse(int bn, int st, int x, int y);
 static void motion(int x, int y);
 static int translate_skey(int key);
+static void draw_cursor(int x, int y);
 
 #if defined(__unix__) || defined(unix)
 #include <GL/glx.h>
@@ -53,7 +55,7 @@ int main(int argc, char **argv)
 	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
 	glutCreateWindow("RetroRay");
 
-	glutDisplayFunc(app_display);
+	glutDisplayFunc(display);
 	glutReshapeFunc(reshape);
 	glutKeyboardFunc(keydown);
 	glutKeyboardUpFunc(keyup);
@@ -178,6 +180,14 @@ void app_vsync(int vsync)
 #endif
 
 
+static void display(void)
+{
+	app_display();
+
+	draw_cursor(mouse_x, mouse_y);
+
+	app_swap_buffers();
+}
 
 static void reshape(int x, int y)
 {
@@ -252,3 +262,17 @@ static int translate_skey(int key)
 
 	return -1;
 }
+
+static void draw_cursor(int x, int y)
+{
+	int i;
+	uint32_t *fbptr = framebuf + y * win_width + x;
+
+	for(i=0; i<3; i++) {
+		int offs = i + 1;
+		if(y > offs) fbptr[-win_width * offs] ^= 0xffffff;
+		if(y < win_height - offs - 1) fbptr[win_width * offs] ^= 0xffffff;
+		if(x > offs) fbptr[-offs] ^= 0xffffff;
+		if(x < win_width - offs - 1) fbptr[offs] ^= 0xffffff;
+	}
+}
-- 
1.7.10.4