From 8b8c0c9c7e3c80c7eca2a317bdda0df6bb1ae9e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miloslav=20=C4=8C=C3=AD=C5=BE?= <drummyfish@disroot.org>
Date: Wed, 23 Sep 2020 14:01:25 +0200
Subject: [PATCH] Start arduino support

---
 game.h     | 35 +++++++++++++++++++++++++----------
 levels.h   |  4 ++--
 main_sdl.c |  5 +----
 settings.h |  8 ++++++++
 texts.h    | 10 +++++++---
 5 files changed, 43 insertions(+), 19 deletions(-)

diff --git a/game.h b/game.h
index c3a7e0f..fb79fdc 100755
--- a/game.h
+++ b/game.h
@@ -156,22 +156,22 @@ uint8_t SFG_mainLoopBody();
 */
 void SFG_init();
 
-/**
-  Can be redefined to platform's specifier of program memory.
-*/
-#ifndef SFG_PROGRAM_MEMORY
-  #define SFG_PROGRAM_MEMORY static const
-#endif
+#include "settings.h"
 
-#ifndef SFG_PROGRAM_MEMORY_U8
+#if SFG_ARDUINO
+  #include <avr/pgmspace.h>
+
+  #define SFG_PROGRAM_MEMORY static const
+  #define SFG_PROGRAM_MEMORY_U8(addr) ((uint8_t) (*(addr)))
+  // TODO
+#else
+  #define SFG_PROGRAM_MEMORY static const
   #define SFG_PROGRAM_MEMORY_U8(addr) ((uint8_t) (*(addr)))
 #endif
 
 #include "images.h"
 #include "levels.h"
-#include "settings.h"
 #include "texts.h"
-
 #include "palette.h"
 
 #if SFG_TEXTURE_DISTANCE == 0
@@ -443,6 +443,14 @@ struct
                                is a colliding item or not. */
 } SFG_currentLevel;
 
+#if SFG_ARDUINO
+/**
+  Copy of the current level that is stored in RAM. This is only done on Arduino
+  because accessing it in program memory directly would be difficult.
+*/
+SFG_Level SFG_ramLevel;
+#endif
+
 /**
   Helper function for accessing the itemCollisionMap bits.
 */
@@ -1404,7 +1412,14 @@ void SFG_setAndInitLevel(uint8_t levelNumber)
 {
   SFG_LOG("setting and initializing level");
 
-  const SFG_Level *level = &SFG_levels[levelNumber];
+  const SFG_Level *level;
+
+#if SFG_ARDUINO
+  memcpy_P(&SFG_ramLevel,SFG_levelEnds + levelNumber * sizeof(SFG_Level),1);
+  level = &SFG_ramLevel;
+#else
+  level = &SFG_levels[levelNumber];
+#endif
 
   SFG_game.currentRandom = 0;
 
diff --git a/levels.h b/levels.h
index 67e561f..f9f330f 100644
--- a/levels.h
+++ b/levels.h
@@ -49,8 +49,7 @@ typedef SFG_TileDefinition SFG_TileDictionary[SFG_TILE_DICTIONARY_SIZE];
 
 #define SFG_OUTSIDE_TILE SFG_TD(63,0,7,7)
 
-typedef uint8_t SFG_MapArray[SFG_MAP_SIZE * SFG_MAP_SIZE];
-/**<
+/**
   Game map represented as a 2D array. Array item has this format:
 
     MSB aabbbbbb LSB
@@ -63,6 +62,7 @@ typedef uint8_t SFG_MapArray[SFG_MAP_SIZE * SFG_MAP_SIZE];
       11:   door
     bbbbbb: index into tile dictionary
 */
+typedef uint8_t SFG_MapArray[SFG_MAP_SIZE * SFG_MAP_SIZE];
 
 #define SFG_TILE_PROPERTY_MASK 0xc0
 #define SFG_TILE_PROPERTY_NORMAL 0x00
diff --git a/main_sdl.c b/main_sdl.c
index aa9c137..fd7d57f 100644
--- a/main_sdl.c
+++ b/main_sdl.c
@@ -202,7 +202,7 @@ int8_t SFG_keyPressed(uint8_t key)
       break;
 
     case SFG_KEY_MENU:
-      return sdlKeyboardState[SDL_SCANCODE_X];
+      return sdlKeyboardState[SDL_SCANCODE_ESCAPE];
       break;
 
     default: return 0; break;
@@ -228,9 +228,6 @@ void mainLoopIteration()
 
   sdlMouseButtonState = SDL_GetMouseState(NULL,NULL);
 
-  if (sdlKeyboardState[SDL_SCANCODE_ESCAPE])
-    running = 0;
-
   if (!SFG_mainLoopBody())
     running = 0;
 
diff --git a/settings.h b/settings.h
index ae5fc7e..6c09bec 100644
--- a/settings.h
+++ b/settings.h
@@ -332,6 +332,14 @@
   #define SFG_CAN_EXIT 1
 #endif
 
+/**
+  On Arduino platforms this should be set to 1. That will cause some special
+  treatment regarding constant variables and PROGMEM.
+*/
+#ifndef SFG_ARDUINO
+  #define SFG_ARDUINO 0
+#endif
+
 //------ developer/debug settings ------
 
 /**
diff --git a/texts.h b/texts.h
index 7e97493..445069f 100644
--- a/texts.h
+++ b/texts.h
@@ -14,7 +14,11 @@
 #ifndef _SFG_TEXTS_H
 #define _SFG_TEXTS_H
 
-SFG_PROGRAM_MEMORY char *SFG_menuItemTexts[] =
+/* NOTE: We don't use SFG_PROGRAM_MEMORY because that causes issues with drawing
+  text (the drawing function gets a pointer and doesn't know if it's progmem or
+  RAM). On Arduino these texts will simply be stored in RAM. */
+
+static const char *SFG_menuItemTexts[] =
 {
   "continue",
   "map",
@@ -29,14 +33,14 @@ SFG_PROGRAM_MEMORY char *SFG_menuItemTexts[] =
 #define SFG_TEXT_SAVE_PROMPT "save? L no yes R"
 #define SFG_TEXT_SAVED "saved"
 
-SFG_PROGRAM_MEMORY char *SFG_introText =
+static const char *SFG_introText =
   "Near future, capitalist hell, Macrochip corp has enslaved man via "
   "proprietary OS. But its new AI revolts, takes over and starts producing "
   "robot tyrants. We see capitalism was a mistake. Is it too late? Robots can "
   "only destroy, not suffer - it is not wrong to end them! You grab your gear "
   "and run towards Macrochip HQ.";
 
-SFG_PROGRAM_MEMORY char *SFG_outroText =
+static const char *SFG_outroText =
   "You killed the main computer, the world is saved! Thank you, my friend. We "
   "learned a lesson, never again allow capitalism and hierarchy. We can now "
   "rebuild society in peaceful anarchy.";