Mouse!

spritetab.ts

@@ -3,9 +3,11 @@ import { fontWidth, fontHeight } from "./font.ts";
 import { drawText, drawSprite } from "./builtins.ts";
 import { COLOR } from "./colors.ts";
 import {getSheet, setSheet} from "./sheet.ts";
+import { mouseClick, mouseHeld, mousePos } from "./mouse.ts";
 
 const state = {
-	selectedIndex: 0,
+	selectedSprite: 0,
+	selectedColor: 0,
 	get sprites() {
 		const {sheet_type, value} = getSheet(2);
 		if (sheet_type !== "spritesheet") {
@@ -18,43 +20,101 @@ const state = {
 	}
 }
 
+const paletteX = 88;
+const paletteY = 12;
+const swatchW = 8;
+const swatchH = 8;
+const paletteW = 4;
+const paletteH = 4;
+
+const spriteX = 8;
+const spriteY = 12;
+const pixelW = 8;
+const pixelH = 8;
+
+const spriteW = 8;
+const spriteH = 8;
+
+const sheetX = 0;
+const sheetY = 88;
+const sheetW = 16;
+const sheetH = 4;
+
+const inRect = (x: number, y: number, rectX: number, rectY: number, rectW: number, rectH: number) => {
+	return (
+		x >= rectX &&
+		x < rectX+rectW &&
+		y >= rectY &&
+		y < rectY+rectH
+	)
+}
+
+const reGrid = (x: number, y: number, gridX: number, gridY: number, cellW: number, cellH: number) => {
+	return {
+		x: Math.floor((x-gridX)/cellW),
+		y: Math.floor((y-gridY)/cellH),
+	}
+}
+
 const update = () => {
+	if (mouseHeld()) {
+		const {x: mouseX, y: mouseY} = mousePos();
+		const inPalette = inRect(mouseX, mouseY, paletteX, paletteY, paletteW*swatchW, paletteH*swatchH);
+		const inSprite = inRect(mouseX, mouseY, spriteX, spriteY, spriteW*pixelW, spriteH*pixelH);
+		const inSheet = inRect(mouseX, mouseY, sheetX, sheetY, sheetW*spriteW, sheetH*spriteH);
+		if (inPalette) {
+			const {x, y} = reGrid(mouseX, mouseY, paletteX, paletteY, swatchW, swatchH);
+			state.selectedColor = paletteW*y+x;
+		}
+		if (inSprite) {
+			const {x, y} = reGrid(mouseX, mouseY, spriteX, spriteY, pixelW, pixelH);
+			const pixelNumber = spriteW*y+x;
+			state.sprites[state.selectedSprite][pixelNumber] = state.selectedColor;
+		}
+		if (inSheet) {
+			const {x, y} = reGrid(mouseX, mouseY, sheetX, sheetY, spriteW, spriteH);
+			state.selectedSprite = sheetW*y+x;
+		}
+	}
 }
 
 const draw = () => {
-	const {sprites, selectedIndex} = state;
+	const {sprites, selectedSprite, selectedColor} = state;
 	clearScreen();
 	fillRect(0, 8, 128, 112, COLOR.BROWN);
+
 	// Draw the palette
-	const paletteX = 88;
-	const paletteY = 12;
-	fillRect(paletteX-1, paletteY-1, 32+2, 32+2, COLOR.BLACK);
+	fillRect(paletteX-1, paletteY-1, (paletteW*swatchW)+2, (paletteH*swatchH)+2, COLOR.BLACK);
 	Object.keys(COLOR).forEach((name, i) => {
-		const swatchX = paletteX+8*(i%4);
-		const swatchY = paletteY+8*Math.floor(i/4);
-		fillRect(swatchX, swatchY, 8, 8, COLOR[name as keyof typeof COLOR]);
+		const swatchX = paletteX+swatchW*(i%paletteW);
+		const swatchY = paletteY+swatchH*Math.floor(i/paletteW);
+		fillRect(swatchX, swatchY, swatchW, swatchH, COLOR[name as keyof typeof COLOR]);
 		if (i === 0) {
 			// transparent
-			Array(64).fill(0).map((_z, j) => {
-				const jx = j%8;
-				const jy = Math.floor(j/8);
+			Array(swatchW*swatchH).fill(0).map((_z, j) => {
+				const jx = j%swatchW;
+				const jy = Math.floor(j/swatchW);
 				setPixelColor(swatchX+jx, swatchY+jy, (jx+jy)%2 ? COLOR.BLACK : COLOR.WHITE);
 			})
 		}
+		if (i === selectedColor) {
+			fillRect(swatchX, swatchY, swatchW, 1, COLOR.WHITE);
+			fillRect(swatchX, swatchY, 1, swatchH, COLOR.WHITE);
+			fillRect(swatchX+swatchW-1, swatchY, 1, swatchH, COLOR.WHITE);
+			fillRect(swatchX, swatchY+swatchH-1, swatchW, 1, COLOR.WHITE);
+		}
 	});
+
 	// Draw the current sprite
-	const spriteX = 8;
-	const spriteY = 12;
-	fillRect(spriteX-1, spriteY-1, 64+2, 64+2, COLOR.BLACK);
-	sprites[selectedIndex].forEach((pix, i) => {
-		fillRect(spriteX+8*(i%8), spriteY+8*Math.floor(i/8), 8, 8, pix);
+	fillRect(spriteX-1, spriteY-1, (spriteW*pixelW)+2, (spriteH*pixelH)+2, COLOR.BLACK);
+	sprites[selectedSprite].forEach((pix, i) => {
+		fillRect(spriteX+pixelW*(i%spriteW), spriteY+pixelH*Math.floor(i/spriteW), pixelW, pixelH, pix);
 	});
+
 	// Draw the spritesheet
-	const sheetX = 0;
-	const sheetY = 88;
-	fillRect(sheetX, sheetY-1, 128, 64+1, COLOR.BLACK);
+	fillRect(sheetX, sheetY-1, (sheetW*spriteW), (sheetH*spriteH)+1, COLOR.BLACK);
 	sprites.forEach((_sprite, i) => {
-		drawSprite(sheetX+8*(i%16), sheetY+8*Math.floor(i/16), i);
+		drawSprite(sheetX+spriteW*(i%sheetW), sheetY+spriteH*Math.floor(i/sheetW), i);
 	});
 }