From 0c0d2fd7c950b3eaa04b01e5a3f1644839e5318a Mon Sep 17 00:00:00 2001
From: Lukas Krickl <lukas@krickl.dev>
Date: Fri, 4 Oct 2024 06:41:47 +0200
Subject: [PATCH] Added basic ui drawing code

---
 src/main.s         |  1 +
 src/map.s          |  2 --
 src/strings.s      |  7 +++++++
 src/ui.s           | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/video.s        |  5 +----
 tiles/tileset1.inc | 46 +++++++++++++++++++++++-----------------------
 6 files changed, 74 insertions(+), 29 deletions(-)
 create mode 100644 src/ui.s

diff --git a/src/main.s b/src/main.s
index fbe653d..2a059a3 100644
--- a/src/main.s
+++ b/src/main.s
@@ -39,6 +39,7 @@ main:
 #include "player.s"
 #include "update.s"
 #include "map.s"
+#include "ui.s"
 
 #include "tiles.inc"
 
diff --git a/src/map.s b/src/map.s
index d66eead..9d2bf7f 100644
--- a/src/map.s
+++ b/src/map.s
@@ -119,8 +119,6 @@ room_draw:
   ld a, b
   cp a, 0
   jp nz, @loop
-   
-
 
   ret
 
diff --git a/src/strings.s b/src/strings.s
index e2691bd..5bd025a 100644
--- a/src/strings.s
+++ b/src/strings.s
@@ -10,6 +10,13 @@
 
 STR_TITLE:
 .str "game"
+.db 0
+
+STR_HP:
+.str "hp"
+.db 0
+STR_MP:
+.str "MP"
 .db 0
 
   ; print a string 0-terminated to the screen 
diff --git a/src/ui.s b/src/ui.s
new file mode 100644
index 0000000..4a36d2d
--- /dev/null
+++ b/src/ui.s
@@ -0,0 +1,42 @@
+#define THP_ICON 0x33
+#define TMP_ICON 0x37
+
+  ; update the UI 
+  ; this should only be called 
+  ; during blanking 
+ui_draw:
+  ; draw hp string
+  ld hl, STR_HP
+  ld de, SCRN0_UI
+  call puts
+ 
+  ; draw mp string 
+  ld hl, STR_MP
+  ld de, SCRN0_UI+10
+  call puts
+  
+  ; draw hp UI
+  ld a, THP_ICON
+  ld hl, SCRN0_UI+SCRN_W
+  ld [hl+], a
+  inc a
+  ld [hl+], a
+  inc a
+  ld [hl+], a
+  inc a
+  ld [hl+], a
+  
+  ; draw mp UI 
+  ld a, TMP_ICON
+  ld hl, SCRN0_UI+SCRN_W+10
+  ld [hl+], a
+  
+  ld a, THP_ICON+1 ; the bar
+
+  ld [hl+], a
+  inc a
+  ld [hl+], a
+  inc a
+  ld [hl+], a
+
+  ret
diff --git a/src/video.s b/src/video.s
index 7889b80..e315321 100644
--- a/src/video.s
+++ b/src/video.s
@@ -6,10 +6,7 @@ vblank:
   ; get inputs 
   call poll_inputs
 
-  ; test puts 
-  ld hl, STR_TITLE
-  ld de, SCRN0_UI
-  call puts
+  call ui_draw
 
   ld a, 1
   ld [frame_ready], a
diff --git a/tiles/tileset1.inc b/tiles/tileset1.inc
index 552865d..1f4e41f 100644
--- a/tiles/tileset1.inc
+++ b/tiles/tileset1.inc
@@ -494,39 +494,39 @@
 .chr 00000000
 .chr 00000000
 ; tile 55
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
+.chr 00333300
+.chr 00311300
+.chr 03322330
+.chr 32222223
+.chr 32222223
+.chr 30000003
+.chr 32222223
+.chr 03333330
 ; tile 56
 .chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
+.chr 00333333
+.chr 03000000
+.chr 03000000
+.chr 03000000
+.chr 00333333
 .chr 00000000
 .chr 00000000
 ; tile 57
 .chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
+.chr 33333333
+.chr 20000002
+.chr 20000002
+.chr 20000002
+.chr 33333333
 .chr 00000000
 .chr 00000000
 ; tile 58
 .chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
-.chr 00000000
+.chr 33333300
+.chr 00000030
+.chr 00000030
+.chr 00000030
+.chr 33333300
 .chr 00000000
 .chr 00000000
 ; tile 59
-- 
2.30.2