Added some colorization and UI revamp

nes/nescoundrel.c

@@ -25,6 +25,11 @@
 #define KEY_SL 7
 #define KEY_ST 8
 
+#define GAME_WHITE 0
+#define GAME_RED 1
+#define GAME_YELLOW 2
+#define GAME_GREEN 3
+
 int joy_input_wait() {
   unsigned char last_joy = 0, joy, pressed;
   /* wait until the previous key is released */
@@ -46,19 +51,47 @@ int joy_input_wait() {
   }
 }
 
+/* palette loader */
+void init_palette() {
+  unsigned char i;
+  const unsigned char my_palette[16] = {
+    0x0f, 0, 0, 0x30, /* white */
+    0x0f, 0, 0, 0x15, /* red */
+    0x0f, 0, 0, 0x28, /* yellow */
+    0x0f, 0, 0, 0x2A  /* green */
+  };
+  PPU.vram.address = 0x3F;
+  PPU.vram.address = 0;
+  for(i=0; i<16; i++) PPU.vram.data = my_palette[i];
+}
+
+/* 4x4 char block colorization method (palette is 0 to 3) */
+void colorxy(unsigned char x, unsigned char y, unsigned char palette) {
+  unsigned int addr;
+  unsigned char attr_byte;
+  addr = 0x23C0 + ((y >> 2) << 3) + (x >> 2);
+  attr_byte = palette | (palette << 2) | (palette << 4) | (palette << 6);
+  waitvsync();
+  PPU.vram.address = (unsigned char) (addr >> 8);
+  PPU.vram.address = (unsigned char) (addr & 255);
+  PPU.vram.data = attr_byte;
+}
+
 void game_startup() {
-  unsigned int entropy;
+  unsigned int entropy, i, j;
   unsigned char joy;
 #ifdef _randomize
   _randomize();
 #endif
   entropy = rand();
-  clrscr();
   bgcolor(COLOR_BLACK);
   textcolor(0);
-  gotoxy(7, 2);
+  init_palette();
-  cputs("Luxferre presents");
+  clrscr();
-  gotoxy(0, 3);
+  for(j=0;j<24;j+=4)
+    for(i=3;i<32;i+=4)
+      colorxy(i, j, 1 + ((++entropy) % 3));
+  gotoxy(0, 2);
   cputs( \
 "    _______ _______ _______ \r\n"  \
 "   |   _   |   _   |   _   |\r\n" \
@@ -83,13 +116,12 @@ void game_startup() {
 "   |:  |   |:  1   |:  1   |\r\n" \
 "   |::.|:. |::.. . |::.. . |\r\n" \
 "   `--- ---`-------`-------'");
-  gotoxy(SCREEN_CENTER_X - 6, SCREEN_HEIGHT - 3);
+  cputsxy(SCREEN_CENTER_X - 6, SCREEN_HEIGHT - 4, "Press Start");
-  cputs("Press Start");
+  cputsxy(1, SCREEN_HEIGHT - 2, "Luxferre");
-  gotoxy(SCREEN_WIDTH-5, SCREEN_HEIGHT - 2);
+  cputsxy(SCREEN_WIDTH-5, SCREEN_HEIGHT - 2, "2026");
-  cputs("2026");
   joy_install(joy_static_stddrv);
   while(1) {
-    entropy++;
+    ++entropy;
     joy = joy_read(JOY_1);
     if(JOY_START(joy)) break;
     waitvsync();
@@ -100,7 +132,11 @@ void game_startup() {
 
 /* Win screen display */
 void win_screen(int score) {
+  unsigned char i, j;
   clrscr();
+  for(j=0;j<12;j+=4)
+    for(i=3;i<32;i+=4)
+      colorxy(i, j, 1 + (rand() % 3));
   gotoxy(0, 3);
   cputs("      ___ ___ ___ ______  \r\n" \
 "     |   Y   |   |   _  \\ \r\n" \
@@ -169,22 +205,23 @@ char get_choice() {
 
 /* Draw a room character according to the index and value */
 void render_room_item(short i, short v) {
-  short topleft_x, topleft_y,
+  unsigned char color,
+        topleft_x, topleft_y,
         topright_x, bottomleft_y,
         text_x, text_y, cheight=7, cwidth=8, left_offset = 9;
 
   if(i == 0) {
     topleft_x = 8;
-    topleft_y = 3;
+    topleft_y = 0;
   } else if(i == 1) {
-    topleft_x = 1;
+    topleft_x = 0;
-    topleft_y = 9;
+    topleft_y = 8;
   } else if(i == 2) {
-    topleft_x = 15;
+    topleft_x = 16;
-    topleft_y = 9;
+    topleft_y = 8;
   } else if(i == 3) {
     topleft_x = 8;
-    topleft_y = 15;
+    topleft_y = 16;
   }
   topright_x = topleft_x + cwidth - 1;
   bottomleft_y = topleft_y + cheight - 1;
@@ -192,6 +229,17 @@ void render_room_item(short i, short v) {
   text_y = topleft_y + 2;
   if(v == 0) {} /* don't render anything */
   else {
+    if(v < 14) {
+      color = GAME_RED;
+    } else if(v < 23) {
+      color = GAME_YELLOW;
+    } else {
+      color = GAME_GREEN;
+    }
+    colorxy(topleft_x, topleft_y, color);
+    colorxy(topleft_x+4, topleft_y, color);
+    colorxy(topleft_x, topleft_y+4, color);
+    colorxy(topleft_x+4, topleft_y+4, color);
     /* draw the rectangle */
     chlinexy(topleft_x + 1, topleft_y, cwidth - 2);
     chlinexy(topleft_x + 1, bottomleft_y, cwidth - 2);
@@ -199,9 +247,13 @@ void render_room_item(short i, short v) {
     cvlinexy(topright_x, topleft_y + 1, cheight - 2);
     /* draw text */
     gotoxy(text_x, text_y);
-    if(v < 14) cputs("ENEMY ");
+    if(v < 14) {
-    else if(v < 23) cputs("WEAPON");
+      cputs("ENEMY ");
-    else cputs("POTION"); 
+    } else if(v < 23) {
+      cputs("WEAPON");
+    } else {
+      cputs("POTION"); 
+    }
     gotoxy(text_x, text_y+2);
     if(v < 14) cprintf("LVL %02d", v + 1);
     else if(v < 23) cprintf("LVL %02d", v - 12);
@@ -222,37 +274,28 @@ void render_main_scene() {
     if(deck[i]) deck_count++;
   clrscr();
   /* render the frames */
-  cvlinexy(0,0,SCREEN_HEIGHT);
+  chlinexy(0,SCREEN_HEIGHT-1,SCREEN_WIDTH);
-  cvlinexy(SCREEN_WIDTH-1,0,SCREEN_HEIGHT);
+  chlinexy(0,SCREEN_HEIGHT-3,SCREEN_WIDTH);
-  chlinexy(1,0,SCREEN_WIDTH-2);
-  chlinexy(1,SCREEN_HEIGHT-1,SCREEN_WIDTH-2);
-  chlinexy(1,SCREEN_HEIGHT-3,SCREEN_WIDTH-2);
-  cputsxy(9, 0, "SCOUNDREL-2026");
-  cputsxy(2, SCREEN_HEIGHT-5,"D-Pad to select item");
   /* render the room */
   for(i=0;i<4;i++) render_room_item(i, room[i]);
-  cputsxy(10, 12, "ROOM");
+  cputsxy(10, 10, "DECK");
+  gotoxy(11, 12);
+  cprintf("%02d", deck_count);
+  cvlinexy(9, 10, 3);
+  cvlinexy(14, 10, 3);
+  chlinexy(10, 9, 4);
+  chlinexy(10, 13, 4);
   /* render stats */
-  gotoxy(statbase, 5);
+  gotoxy(statbase, 1);
   cprintf("Health     %02d", hp);
-  gotoxy(statbase, 6);
+  gotoxy(statbase, 3);
   cprintf("Weapon     %02d", weapon);
-  gotoxy(statbase, 7);
+  gotoxy(statbase, 5);
   cprintf("Durability %02d", durability);
-  gotoxy(statbase, 17);
+  cputsxy(statbase, 17, "Choose: D-Pad");
-  cprintf("Deck cards %02d", deck_count);
+  cputsxy(statbase, 19, can_run ? "Run: A/B/SELECT" : "Cannot run!");
-  gotoxy(statbase, 19);
+  gotoxy(statbase, 21);
   cprintf("Rooms clrd %02d", rooms_cleared);
-
-  /* render controls info */
-  if(can_run) {
-    cputsxy(24, 10, "Run:");
-    cputsxy(24, 12, "A/B or");
-    cputsxy(24, 14, "SELECT");
-  } else {
-    cputsxy(24, 11, "Cannot");
-    cputsxy(24, 13, " run!");
-  }
   /* render status message */
   gotoxy(1, SCREEN_HEIGHT-2);
   cprintf("%s", status_msg);