fox32rom: Add EVENT_TYPE_KEY_DOWN and EVENT_TYPE_KEY_UP

event.asm

@@ -3,9 +3,11 @@
 ; event types
 const EVENT_TYPE_MOUSE_CLICK:    0x00000000
 const EVENT_TYPE_MOUSE_RELEASE:  0x00000001
-const EVENT_TYPE_MENU_BAR_CLICK: 0x00000002
-const EVENT_TYPE_MENU_UPDATE:    0x00000003
-const EVENT_TYPE_MENU_CLICK:     0x00000004
+const EVENT_TYPE_KEY_DOWN:       0x00000002
+const EVENT_TYPE_KEY_UP:         0x00000003
+const EVENT_TYPE_MENU_BAR_CLICK: 0x00000004
+const EVENT_TYPE_MENU_UPDATE:    0x00000005
+const EVENT_TYPE_MENU_CLICK:     0x00000006
 const EVENT_TYPE_EMPTY:          0xFFFFFFFF
 
 ; block until an event is available

fox32rom.def

@@ -64,7 +64,9 @@ compare_memory_words:                     jmp [0xF004600C]
 ; event types
 const EVENT_TYPE_MOUSE_CLICK:    0x00000000
 const EVENT_TYPE_MOUSE_RELEASE:  0x00000001
-const EVENT_TYPE_MENU_BAR_CLICK: 0x00000002
-const EVENT_TYPE_MENU_UPDATE:    0x00000003
-const EVENT_TYPE_MENU_CLICK:     0x00000004
+const EVENT_TYPE_KEY_DOWN:       0x00000002
+const EVENT_TYPE_KEY_UP:         0x00000003
+const EVENT_TYPE_MENU_BAR_CLICK: 0x00000004
+const EVENT_TYPE_MENU_UPDATE:    0x00000005
+const EVENT_TYPE_MENU_CLICK:     0x00000006
 const EVENT_TYPE_EMPTY:          0xFFFFFFFF

keyboard.asm

@@ -0,0 +1,37 @@
+; keyboard routines
+
+; add events to the event queue if a key was pressed or released
+; this should only be called by system_vsync_handler
+keyboard_update:
+    ; pop a key from the keyboard queue
+    in r0, 0x80000500
+    cmp r0, 0
+    ifz jmp keyboard_update_end
+
+    ; check if this is a make or break scancode
+    bts r0, 7
+    ifnz jmp keyboard_update_break_scancode
+
+    mov r1, r0
+    mov r0, EVENT_TYPE_KEY_DOWN
+    mov r2, 0
+    mov r3, 0
+    mov r4, 0
+    mov r5, 0
+    mov r6, 0
+    mov r7, 0
+    call new_event
+    jmp keyboard_update_end
+keyboard_update_break_scancode:
+    and r0, 0x7F
+    mov r1, r0
+    mov r0, EVENT_TYPE_KEY_UP
+    mov r2, 0
+    mov r3, 0
+    mov r4, 0
+    mov r5, 0
+    mov r6, 0
+    mov r7, 0
+    call new_event
+keyboard_update_end:
+    ret

main.asm

@@ -146,6 +146,7 @@ get_rom_version:
     #include "draw_rectangle.asm"
     #include "draw_text.asm"
     #include "event.asm"
+    #include "keyboard.asm"
     #include "memory.asm"
     #include "menu.asm"
     #include "menu_bar.asm"

mouse.asm

@@ -28,15 +28,6 @@ get_mouse_button:
 ; updates the cursor position and adds a event_type_mouse_click event to the event queue if the mouse button was clicked
 ; this should only be called by system_vsync_handler
 mouse_update:
-    push r0
-    push r1
-    push r2
-    push r3
-    push r4
-    push r5
-    push r6
-    push r7
-
     mov r0, 0x8000001F            ; overlay 31: position
     in r2, 0x80000401             ; mouse position
     out r0, r2
@@ -125,12 +116,4 @@ mouse_update_menu_was_clicked:
     call new_event
     ret
 mouse_update_end:
-    pop r7
-    pop r6
-    pop r5
-    pop r4
-    pop r3
-    pop r2
-    pop r1
-    pop r0
     ret

vsync.asm

@@ -1,5 +1,24 @@
 ; vsync interrupt routine
 
 system_vsync_handler:
+    push r0
+    push r1
+    push r2
+    push r3
+    push r4
+    push r5
+    push r6
+    push r7
+
     call mouse_update
+    call keyboard_update
+
+    pop r7
+    pop r6
+    pop r5
+    pop r4
+    pop r3
+    pop r2
+    pop r1
+    pop r0
     reti