rectangles work

2025-06-11 15:50:22 +01:00
parent be7943320d
commit 4d71868ac6
17 changed files with 321 additions and 48 deletions
--- a/source/features/graphics.asm
+++ b/source/features/graphics.asm
@@ -0,0 +1,48 @@
+os_set_graphics_mode:
+	pusha
+
+	mov ah, 00h
+	mov al, 13h
+	int 10h
+
+	popa
+	ret
+
+; --------------------------------------
+
+; x_end
+; y_end
+; x_start
+; y_start
+; colour
+os_draw_graphical_rectangle:
+	pusha
+
+	; Tell BIOS we're changing 'da pixels!
+	mov ah, 0Ch
+
+	mov al, 1100b
+
+	mov cx, [x_start]
+	mov dx, [y_start]
+
+	jmp .x_loop
+
+	.x_loop:
+		int 10h
+		cmp cx, [x_end]
+		je .next_row
+		inc cx
+		call .x_loop
+
+	.next_row:
+		mov cx, [x_start]
+		cmp dx, [y_end]
+		je .finish
+		inc dx					; Increase Row
+		call .x_loop
+
+	.finish:
+		popa
+		Iret
+