From 07e829e591394fa182e75ecab86051f1fb850ce7 Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Thu, 15 Jun 2023 22:35:39 +0100
Subject: Started with the game

Added hud (WIP)
---
 TODO.md    | 17 +++++--------
 src/game.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/game.h | 16 ++++++++++++
 src/main.c | 10 ++------
 4 files changed, 109 insertions(+), 19 deletions(-)
 create mode 100644 src/game.c
 create mode 100644 src/game.h

diff --git a/TODO.md b/TODO.md
index 61a5fc5..4da9e0b 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,19 +1,12 @@
 # TODO
 
-- map
-  - collision detection
-  - deadly blocks
 - entity system
   - free/used lists
   - player
-- hud
-  - lives
-  - score
-  - time
-  - stage
-  - hi-score
-  - gold left?
-  - pickaxe?
+- timer
+  - clock
+- map
+  - entities
 - pick ups
   - gold
   - extra time
@@ -38,4 +31,6 @@
 
 # REVIEW
 
+- hud
+  - pickaxe?
 - use dosemu instead of dosbox?
diff --git a/src/game.c b/src/game.c
new file mode 100644
index 0000000..70c3235
--- /dev/null
+++ b/src/game.c
@@ -0,0 +1,85 @@
+#include <stdint.h>
+#include <stdio.h>
+
+#include "keyb.h"
+#include "vga.h"
+#include "text.h"
+#include "map.h"
+#include "data.h"
+
+#include "game.h"
+
+static uint32_t hiscore = 15000;
+
+static uint8_t hud;
+
+/* game variables */
+static uint8_t lives;
+static uint32_t score;
+static uint8_t stage;
+static uint8_t gold;
+
+void hud_render()
+{
+    char b[32];
+
+    if (hud & HUD_ALL)
+    {
+        Rect src = { 128, 32, 144, 144};
+        Rect dst = { 0, 0, 16, 16};
+
+        /* lives */
+        blitrc(binary_sprites_start, &src, &dst);
+
+        put_text(132, 4, "TIME");
+        put_text(256, 4, "STAGE");
+    }
+
+    if (hud & HUD_LIVES)
+    {
+        sprintf(b, "%d", lives);
+        put_text(14, 4, b);
+    }
+
+    if (hud & HUD_SCORE)
+    {
+        sprintf(b, "%06li", score);
+        put_text(30, 4, b);
+    }
+
+    if (hud & HUD_TIME)
+    {
+        sprintf(b, "%02d", 0);
+        put_text(172, 4, b);
+    }
+
+    if (hud & HUD_STAGE)
+    {
+        sprintf(b, "%02d", stage);
+        put_text(304, 4, b);
+    }
+
+    hud = HUD_CLEAN;
+}
+
+void run_game()
+{
+    lives = GAME_LIVES_START;
+    score = 0;
+    stage = 0;
+    gold = 30;
+
+    hud = HUD_ALL;
+
+    map_init(binary_stage_start);
+    map_render();
+
+    while (!keys[KEY_ESC])
+    {
+        if (hud)
+            hud_render();
+
+        wait_vsync();
+        blit_update();
+    }
+}
diff --git a/src/game.h b/src/game.h
new file mode 100644
index 0000000..e8c270e
--- /dev/null
+++ b/src/game.h
@@ -0,0 +1,16 @@
+#ifndef _GAME_H
+#define _GAME_H
+
+#define GAME_LIVES_START 3
+#define GAME_LIVES_MAX 9
+
+#define HUD_CLEAN   0
+#define HUD_LIVES   1
+#define HUD_SCORE   2
+#define HUD_STAGE   4
+#define HUD_TIME    8
+#define HUD_ALL     255
+
+void run_game();
+
+#endif /* _GAME_H */
diff --git a/src/main.c b/src/main.c
index 9985159..306f5f1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,9 +6,8 @@
 
 #include "keyb.h"
 #include "vga.h"
-#include "text.h"
-#include "map.h"
 #include "data.h"
+#include "game.h"
 
 /* disable paging because our int handlers are written in C */
 int _crt0_startup_flags = _CRT0_FLAG_LOCK_MEMORY;
@@ -36,14 +35,9 @@ int main(int argc, char *argv[])
 
     blit_erase(0);
     wait_vsync();
-
-    map_init(binary_stage_start);
-    map_render();
-
     blit_update();
 
-    while (!keys[KEY_ESC])
-        wait_vsync();
+    run_game();
 
     set_mode(3);
     close_framebuffer();
-- 
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