Added support for GBC Colorization for GB Games (#263)

* Started adding colorization

* Started adding more colors, everything working!

* Got the color palettes working, and setting up function to switch
between them all

* Finished GBC Colorization

Author: torch2424

core/config.ts

@@ -2,7 +2,7 @@ export class Config {
   // Boot Rom
   static enableBootRom: boolean = false;
 
-  // GBC Preference
+  // GBC Options
   static useGbcWhenAvailable: boolean = true;
 
   // Batch Processing

core/debug/debug-graphics.ts

@@ -6,6 +6,10 @@ import {
   getTileDataAddress,
   drawPixelsFromLineOfTile,
   getMonochromeColorFromPalette,
+  getColorizedGbHexColorFromPalette,
+  getRedFromHexColor,
+  getGreenFromHexColor,
+  getBlueFromHexColor,
   getRgbColorFromPalette,
   getColorComponentFromRgb,
   loadFromVramBank
@@ -170,13 +174,17 @@ export function drawBackgroundMapToWasmMemory(showColor: i32): void {
         store<u8>(offset + 2, <u8>blue);
       } else {
         // Only rendering camera for now, so coordinates are for the camera.
-        // Get the rgb value for the color Id, will be repeated into R, G, B
-        let monochromeColor: i32 = getMonochromeColorFromPalette(paletteColorId, Graphics.memoryLocationBackgroundPalette);
+        // Get the rgb value for the color Id, will be repeated into R, G, B (if not colorized)
+        let hexColor: i32 = getColorizedGbHexColorFromPalette(paletteColorId, Graphics.memoryLocationBackgroundPalette);
 
-        for (let i: i32 = 0; i < 3; i++) {
-          let offset: i32 = BACKGROUND_MAP_LOCATION + pixelStart + i;
-          store<u8>(offset, <u8>monochromeColor);
-        }
+        let offset: i32 = BACKGROUND_MAP_LOCATION + pixelStart;
+
+        // Red
+        store<u8>(offset + 0, <u8>getRedFromHexColor(hexColor));
+        // Green
+        store<u8>(offset + 1, <u8>getGreenFromHexColor(hexColor));
+        // Blue
+        store<u8>(offset + 2, <u8>getBlueFromHexColor(hexColor));
       }
     }
   }

core/graphics/backgroundWindow.ts

@@ -3,7 +3,13 @@ import { FRAME_LOCATION } from '../constants';
 import { Cpu } from '../cpu/index';
 import { Config } from '../config';
 import { Graphics, loadFromVramBank, setPixelOnFrame, getRgbPixelStart } from './graphics';
-import { getMonochromeColorFromPalette, getRgbColorFromPalette, getColorComponentFromRgb } from './palette';
+import {
+  getMonochromeColorFromPalette,
+  getColorizedGbHexColorFromPalette,
+  getRgbColorFromPalette,
+  getColorComponentFromRgb
+} from './palette';
+import { getRedFromHexColor, getGreenFromHexColor, getBlueFromHexColor } from './colors';
 import { addPriorityforPixel, getPriorityforPixel } from './priority';
 import { TileCache, drawPixelsFromLineOfTile, getTileDataAddress } from './tiles';
 // Assembly script really not feeling the reexport
@@ -238,11 +244,11 @@ function drawMonochromePixelFromTileId(
 
   // FINALLY, RENDER THAT PIXEL!
   // Only rendering camera for now, so coordinates are for the camera.
-  // Get the rgb value for the color Id, will be repeated into R, G, B
-  let monochromeColor: i32 = getMonochromeColorFromPalette(paletteColorId, Graphics.memoryLocationBackgroundPalette);
-  setPixelOnFrame(xPixel, yPixel, 0, monochromeColor);
-  setPixelOnFrame(xPixel, yPixel, 1, monochromeColor);
-  setPixelOnFrame(xPixel, yPixel, 2, monochromeColor);
+  // Get the rgb value for the color Id, will be repeated into R, G, B. if not colorized
+  let hexColor: i32 = getColorizedGbHexColorFromPalette(paletteColorId, Graphics.memoryLocationBackgroundPalette);
+  setPixelOnFrame(xPixel, yPixel, 0, getRedFromHexColor(hexColor));
+  setPixelOnFrame(xPixel, yPixel, 1, getGreenFromHexColor(hexColor));
+  setPixelOnFrame(xPixel, yPixel, 2, getBlueFromHexColor(hexColor));
 
   // Lastly, add the pixel to our background priority map
   // https://github.com/torch2424/wasmBoy/issues/51