Update devices to match new specifications

1 files changed, 25 insertions, 0 deletions

diff --git a/src/devices/screen/draw_sprite.rs b/src/devices/screen/draw_sprite.rs
new file mode 100644
index 0000000..9b0658c
--- /dev/null
+++ b/src/devices/screen/draw_sprite.rs
@@ -0,0 +1,25 @@
+use super::*;
+
+impl ScreenDevice {
+    pub fn draw_sprite_1bit(&mut self, params: u8, layer: ScreenLayer) {
+        let sprite = self.sprite_buffer.get_1bit_sprite(params);
+        self.draw_sprite(sprite, layer);
+    }
+
+    pub fn draw_sprite_2bit(&mut self, params: u8, layer: ScreenLayer) {
+        let sprite = self.sprite_buffer.get_2bit_sprite(params);
+        self.draw_sprite(sprite, layer);
+    }
+
+    fn draw_sprite(&mut self, sprite: Sprite, layer: ScreenLayer) {
+        let mut pos = self.cursor;
+        for row in sprite {
+            for colour in row {
+                self.draw_pixel(colour, layer, pos);
+                pos.x = pos.x.wrapping_add(1);
+            }
+            pos.x = pos.x.wrapping_sub(8);
+            pos.y = pos.x.wrapping_add(1);
+        }
+    }
+}