Playground

Potential example game.

1 files changed, 48 insertions, 0 deletions

diff --git a/game/player.asm b/game/player.asm
new file mode 100644
index 0000000..4a6537f
--- /dev/null
+++ b/game/player.asm
@@ -0,0 +1,48 @@
+;
+; player update code
+;
+
+player_update:
+    ld x, [sp + 2]
+    ld a, [sp + 3]
+
+    ; read controller 1
+    ld b, 0xf0
+    port b, b
+
+    inc x
+    bo
+    inc a
+    ; x coord
+    ld y, [a : x]
+
+    ; left
+    bit b, 4
+    bz
+    dec y
+    ; right
+    bit b, 5
+    bz
+    inc y
+
+    ld [a : x], y
+
+    inc x
+    bo
+    inc a
+    ; y coord
+    ld y, [a : x]
+
+    ; up
+    bit b, 2
+    bz
+    dec y
+    ; down
+    bit b, 3
+    bz
+    inc y
+
+    ld [a : x], y
+
+    ret
+