fantasy-console/maptab.ts

import { clearScreen, fillRect } from "./window.ts";
import { drawSprite, drawText } from "./builtins.ts";
import { COLOR } from "./colors.ts";
import { getMapSheet, getSheet, getSpriteSheet, setSheet } from "./sheet.ts";
import { mouseHeld, mousePos } from "./mouse.ts";
import { inRect, reGrid } from "./util.ts";
import { page } from "./viewsheets.ts";
import { useSpritesheet } from "./builtins.ts";

const state = {
	selectedSpriteSheet: 2,
	selectedSprite: 0,
	selectedPatch: 0,
	get map() {
		return getMapSheet(page.activeSheet);
	},
	set map(val) {
		setSheet(page.activeSheet, "map", val);
	},
	setInPatch(i: number, sprsheet: number, sprite: number) {
		const xx = this.selectedPatch%overviewW;
		const yy = Math.floor(this.selectedPatch/overviewW);
		const cell = (yy+patchH*Math.floor(i/patchW))*overviewW*patchW+xx*patchW+i%patchW;
		this.map[cell] = [sprsheet, sprite];
	},
	get patch() {
		const xx = this.selectedPatch%overviewW;
		const yy = Math.floor(this.selectedPatch/overviewW);
		return Array(overviewH).fill(0).flatMap((_, i) => {
			const start = (yy+patchH*i)*overviewW*patchW+xx*patchW;
			return this.map.slice(start, start+patchW);
		})
	}
}

const overviewX = 88;
const overviewY = 12;
const miniPatchW = 4;
const miniPatchH = 4;
const overviewW = 8;
const overviewH = 8;

const patchX = 8;
const patchY = 12;
const patchW = 8;
const patchH = 8;

const spriteW = 8;
const spriteH = 8;

const spriteSheetX = 0;
const spriteSheetY = 88;
const spriteSheetW = 16;
const spriteSheetH = 4;

const spriteSheetPickerX = 0;
const spriteSheetPickerY = 79;
const spriteSheetPickerW = 16;
const spriteSheetPickerH = 1;
const spriteSheetPickerTabW = 8;
const spriteSheetPickerTabH = 8;

const update = () => {
	if (mouseHeld()) {
		const {x: mouseX, y: mouseY} = mousePos();
		const inOverview = inRect(mouseX, mouseY, overviewX, overviewY, overviewW*miniPatchW, overviewH*miniPatchH);
		const inPatch = inRect(mouseX, mouseY, patchX, patchY, patchW*spriteW, patchH*spriteH);
		const inSpriteSheetPicker = inRect(mouseX, mouseY, spriteSheetPickerX, spriteSheetPickerY, spriteSheetPickerW*spriteSheetPickerTabW, spriteSheetPickerH*spriteSheetPickerTabH);
		const inSpriteSheet = inRect(mouseX, mouseY, spriteSheetX, spriteSheetY, spriteSheetW*spriteW, spriteSheetH*spriteH);
		if (inOverview) {
			const {x, y} = reGrid(mouseX, mouseY, overviewX, overviewY, miniPatchW, miniPatchH);
			state.selectedPatch = overviewW*y+x;
		}
		if (inPatch) {
			const {x, y} = reGrid(mouseX, mouseY, patchX, patchY, spriteW, spriteH);
			const cellNumber = spriteW*y+x;
			state.setInPatch(cellNumber, state.selectedSpriteSheet, state.selectedSprite);
		}
		if (inSpriteSheetPicker) {
			const {x, y} = reGrid(mouseX, mouseY, spriteSheetPickerX, spriteSheetPickerY, spriteSheetPickerTabW, spriteSheetPickerTabH);
			state.selectedSpriteSheet = spriteSheetPickerW*y+x;
		}
		if (inSpriteSheet) {
			const {x, y} = reGrid(mouseX, mouseY, spriteSheetX, spriteSheetY, spriteW, spriteH);
			state.selectedSprite = spriteSheetW*y+x;
		}
	}
}

const outlineRect = (x: number, y: number, w: number, h: number, color: number) => {
	fillRect(x, y, w, 1, color);
	fillRect(x, y, 1, h, color);
	fillRect(x+w-1, y, 1, h, color);
	fillRect(x, y+h-1, w, 1, color);
}

const draw = () => {
	const {
		selectedSpriteSheet,
		selectedSprite,
		selectedPatch
	} = state;
	clearScreen();
	fillRect(0, 8, 128, 112, COLOR.DARKGRAY);

	// Draw the overview
	fillRect(overviewX-1, overviewY-1, (overviewW*miniPatchW)+2, (overviewH*miniPatchH)+2, COLOR.BLACK);
	Array(overviewW*overviewH).fill(0).forEach((_, i) => {
		const miniPatchX = overviewX+miniPatchW*(i%overviewW);
		const miniPatchY = overviewY+miniPatchH*Math.floor(i/overviewW);
		if (i === selectedPatch) {
			outlineRect(miniPatchX, miniPatchY, miniPatchW, miniPatchH, COLOR.WHITE);
		}
	});

	// Draw the current patch
	fillRect(patchX-1, patchY-1, (patchW*spriteW)+2, (patchH*spriteH)+2, COLOR.BLACK);
	state.patch.forEach(([sprsheet, sprite], i) => {
		const spriteX = patchX+spriteW*(i%patchW);
		const spriteY = patchY+spriteH*Math.floor(i/patchW);
		if (getSheet(sprsheet).sheet_type === "spritesheet") {
			useSpritesheet(sprsheet);
			drawSprite(spriteX, spriteY, sprite);
		}
	});

	// Draw the spritesheet picker
	fillRect(spriteSheetPickerX, spriteSheetPickerY, spriteSheetPickerTabW*spriteSheetPickerW, spriteSheetPickerTabW, COLOR.BLACK);
	Array(spriteSheetPickerW*spriteSheetPickerH).fill(0).forEach((_, i) => {
		const tabX = spriteSheetPickerX+spriteSheetPickerTabW*(i%spriteSheetPickerW);
		const tabY = spriteSheetPickerY+spriteSheetPickerTabH*Math.floor(i/spriteSheetPickerW);
		let color = COLOR.DARKGREEN;
		if (getSheet(i).sheet_type !== "spritesheet") {
			color = COLOR.BROWN;
		}
		if (i === selectedSpriteSheet) {
			color = color === COLOR.BROWN ? COLOR.TAN : COLOR.GREEN;
		}
		fillRect(tabX, tabY, spriteSheetPickerTabW, spriteSheetPickerTabH, color);
		drawText(tabX+2, tabY+1, ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"][i]);
	});
	
	// Draw the spritesheet
	fillRect(spriteSheetX, spriteSheetY-1, (spriteSheetW*spriteW), (spriteSheetH*spriteH)+1, COLOR.BLACK);
	if (getSheet(selectedSpriteSheet).sheet_type === "spritesheet") {
		useSpritesheet(selectedSpriteSheet);
		getSpriteSheet(selectedSpriteSheet).forEach((_sprite, i) => {
			const sprX = spriteSheetX+spriteW*(i%spriteSheetW);
			const sprY = spriteSheetY+spriteH*Math.floor(i/spriteSheetW);
			drawSprite(sprX, sprY, i);
			if (i === selectedSprite) {
				outlineRect(sprX, sprY, spriteW, spriteH, COLOR.WHITE);
			}
		});
	}
}

export const maptab = {
	update,
	draw,
}