Drawing

In this example, we have two glow masks that we want to draw on top of our Town NPC; one of which should only be drawn while our Town NPC is attacking.

For this guide, we will be using these sprites

TutorialTownNPC_GlowMask TutorialTownNPC_GlowMaskAttacking

// Load our textures
private readonly Asset<Texture2D> glowMask = ModContent.Request<Texture2D>("TownNPCGuide/Content/NPCs/TownNPCs/Advanced/TutorialTownNPC_GlowMask");
private readonly Asset<Texture2D> glowMaskAttacking = ModContent.Request<Texture2D>("TownNPCGuide/Content/NPCs/TownNPCs/Advanced/TutorialTownNPC_GlowMaskAttacking");
public override void PostDraw(SpriteBatch spriteBatch, Vector2 screenPos, Color drawColor) {
	// Flip the glow mask to match which direction the Town NPC is facing.
	SpriteEffects spriteEffects = NPC.spriteDirection > 0 ? SpriteEffects.FlipHorizontally : SpriteEffects.None;
	// Draw our glow mask in full bright.
	Color color = Color.White;

	// Move the position up by 4 pixels plus the gfxOffY value (that is for climbing half blocks).
	// Main.NPCAddHeight() makes it so if the Town NPC is sitting, it also moves the glow mask up by 4 more pixels.
	Vector2 verticalOffset = new(0, -4 + NPC.gfxOffY + Main.NPCAddHeight(NPC));

	// Draw our glow mask
	spriteBatch.Draw(glowMask.Value, NPC.Center - screenPos + verticalOffset, NPC.frame, color, NPC.rotation, NPC.frame.Size() / 2f, NPC.scale, spriteEffects, 1f);

	// Only draw our extra attacking glow mask while attacking, which are frames 21+
	if (NPC.frame.Y > 20 * NPC.frame.Height) { 
		spriteBatch.Draw(glowMaskAttacking.Value, NPC.Center - screenPos + verticalOffset, NPC.frame, color, NPC.rotation, NPC.frame.Size() / 2f, NPC.scale, spriteEffects, 1f);
	}
}

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