feat: 第一版可用 pokemon

packages/pokemon/src/sprites/renderer.ts

@@ -0,0 +1,76 @@
+import type { AnimMode } from '../types'
+
+/** Heart particle frames for pet animation */
+const PET_HEARTS = [
+	['   ♥    ', '        '],
+	['  ♥ ♥   ', '   ♥    '],
+	[' ♥   ♥  ', '  ♥ ♥   '],
+	['  ♥ ♥   ', ' ♥   ♥  '],
+	['   ♥    ', '  ♥ ♥   '],
+]
+
+/**
+ * Render animated sprite by applying mode-specific transformations.
+ * All species share the same animation logic - only the base sprite differs.
+ */
+export function renderAnimatedSprite(lines: string[], tick: number, mode: AnimMode): string[] {
+	switch (mode) {
+		case 'idle':
+			return lines
+		case 'fidget':
+			return shiftLines(lines, tick % 2 === 0 ? 0 : 1)
+		case 'blink':
+			return blinkEyes(lines)
+		case 'excited':
+			return shiftLines(lines, tick % 2 === 0 ? -1 : 1)
+		case 'pet':
+			return addPetParticles(lines, tick)
+		default:
+			return lines
+	}
+}
+
+/**
+ * Shift all lines left or right by offset columns.
+ */
+function shiftLines(lines: string[], offset: number): string[] {
+	if (offset === 0) return lines
+	if (offset > 0) {
+		return lines.map((line) => ' '.repeat(offset) + line)
+	}
+	// Shift left: remove leading characters
+	const absOffset = Math.abs(offset)
+	return lines.map((line) => line.slice(absOffset))
+}
+
+/**
+ * Replace eye characters with blink indicator.
+ */
+function blinkEyes(lines: string[]): string[] {
+	// Eye characters that should be replaced for blink
+	return lines.map((line) =>
+		line.replace(/[·✦×◉@°oO]/g, '—'),
+	)
+}
+
+/**
+ * Add heart particle frames above the sprite for pet animation.
+ */
+function addPetParticles(lines: string[], tick: number): string[] {
+	const hearts = PET_HEARTS[tick % PET_HEARTS.length]
+	return [...hearts, ...lines]
+}
+
+/**
+ * Get the animation mode for a given tick in the idle sequence.
+ * IDLE_SEQUENCE replicates the original buddy design pattern.
+ */
+const IDLE_SEQUENCE: AnimMode[] = [
+	'idle', 'idle', 'idle', 'idle',
+	'fidget', 'idle', 'idle', 'idle',
+	'blink', 'idle', 'idle', 'idle', 'idle',
+]
+
+export function getIdleAnimMode(tick: number): AnimMode {
+	return IDLE_SEQUENCE[tick % IDLE_SEQUENCE.length]
+}