1 files changed, 57 insertions, 0 deletions
diff --git a/apps/chess.c b/apps/chess.c
new file mode 100644
index 0000000..d339534
--- /dev/null
+++ b/apps/chess.c
@@ -0,0 +1,57 @@
+// MIT License, Copyright (c) 2021 Marvin Borner
+
+#include <assert.h>
+#include <libgui/gui.h>
+#include <print.h>
+
+#define SIZE 8
+#define TILE 24
+#define WHITE_STARTS 1
+
+typedef u32 board[SIZE][SIZE];
+
+static u32 win = 0; // Window
+static board tiles = { 0 }; // Matrix
+
+static void mouseclick(u32 widget_id, vec2 pos)
+{
+	UNUSED(pos);
+	/* log("%d: %d %d\n", widget_id, pos.x, pos.y); */
+
+	u32 x = widget_id / SIZE;
+	u32 y = (widget_id % SIZE) - 1;
+	u32 widget = tiles[x][y];
+	assert(gui_fill(win, widget, COLOR_MAGENTA) == EOK);
+	gui_redraw_widget(win, widget);
+}
+
+static void create_board(void)
+{
+	u32 widget;
+	for (u8 x = 0; x < 8; x++) {
+		for (u8 y = 0; y < 8; y++) {
+			widget = gui_new_widget(win, vec2(TILE, TILE), vec2(TILE * x, TILE * y));
+			assert(widget > 0);
+			tiles[x][y] = widget;
+
+			u8 colored = (x + y + 1) % 2 == 0;
+#if !WHITE_STARTS
+			colored = !colored;
+#endif
+
+			assert(gui_fill(win, widget, colored ? COLOR_BLACK : COLOR_WHITE) == EOK);
+			assert(gui_listen_widget(win, widget, GUI_LISTEN_MOUSECLICK,
+						 (u32)mouseclick) == EOK);
+		}
+	}
+
+	assert(gui_redraw_window(win) == EOK);
+}
+
+int main(void)
+{
+	assert((win = gui_new_window()) > 0);
+	create_board();
+	gui_loop();
+	return 0;
+}