Revision as of 17:05, November 13, 2020

Lighting

Lighting is the arrangement or effect of objects that produce light, in order to depict a lit environment with depth and color. In video games, this specifically refers to any calculated light source that illuminates and shades 3D objects, as well as fog that obscures distant objects. In the Pikmin series, lighting is extremely important to achieving realistic-looking environments and objects, as the designers try to create as much realism in the Pikmin world as possible.

In this article:

"Light" is any object, seen or unseen, that illuminates an environment.
"Dynamic" lights are lights that move or cause visible highlights or reflections on objects, while
"Static" lights are lights that simply add brightness to an area without interacting with other objects.
"Shading" is the contrast of color on an object because one side of it is illuminated by a light.
"Shadows" are shapes of low light on a surface, created when an object stands in between light rays and that surface.
"Materials" are the compositions of objects that interact with light in different ways.

Light sources

Sunlight is the primary source of light in the Pikmin series, and plays an important role in conveying the passage of a day. When a day begins, the color and brightness of a landscape try to suggest morning. As the day progresses, the sun gets brighter and the environment more colorful, until late in the day when it begins setting and colors become more orange as in a sunset. Each game in the series has a unique way of handling sunlight and the shadows it casts, and as the games progress, this arrangement gets closer to simulating real sunlight.

Pikmin

The only dynamic light is sunlight, that shades all objects but does not actually calculate shadows. This light moves throughout the day, beginning foggy and bright in the morning, clear and at average brightness for the majority of the day, and fading to yellow to orange and finally to very little light as sunset approaches (except in The Forest Navel; sunlight is still present there but does not move or change color). All objects in an area have shading based on this light, but none of the scenery casts real moving shadows based on this light. To help players perceive Pikmin locations, up to 50 Pikmin will cast soft shadows that move throughout the day, even when there is no sunlight. In order to optimize processing power, shadows cast by Pikmin are not drawn if more than 51 Pikmin are on the field; instead, they will all have faint shadows directly underneath them. Enemies always have this sort of faint shadow, except for the Beady Long Legs. Environmental objects like plants never move on the map, so one large texture accounts for all their shadows. The exception is Pellet Posies, which cast soft dynamic shadows just like Pikmin.

All other forms of light, such as Common Glowcaps, the light beams coming from the Onions, and even the light around Captain Olimar in The Forest Navel, are static lights. They do not cast any shading or shadows on objects, but simply brighten the area around them to aid visibility or provide light effects, such as the powerful exhaust from the S.S. Dolphin.

Typical passage of sunlight on a day in Pikmin.
Leaders and Pikmin cast directional shadows, while enemies cast simple soft shadows.
With 51 or more Pikmin, shadow directions are not calculated.
The unique shadow of the Beady Long Legs.
A texture for shadows in The Impact Site. The small separated shadows are for the plants in the area.

Pikmin 2

Sunlight in Pikmin 2 behaves very similarly to that in the previous game, except the color of sunlight varies by area, and fog is generally less pronounced. Around noon, the brightness of the sunlight generally increases, and toward the end of the day it dramatically decreases and turns orange. Yet at any point in the day, when a leader approaches an incomplete cave from above ground, the lighting always mixes a very foggy green color to its current color. All objects are shaded by this sunlight, but most of them (including static objects) do not cast accurate shadows. Instead, most moving objects cast circular shadows directly beneath them, and those shadows never move. However, unlike the shadows in Pikmin, these circular shadows can actually dim other objects, and their simple shape allows many shadows to be rendered at once. Several objects have uniquely shaped shadows for specific reasons, such as:

Boulders, as they fall from the sky and use a growing shadow.
Segmented Crawbster, for the same reason.
Empress Bulblax, since it has a long body of circular segments, has multiple circular shadows.
Arachnorbs, Snavians, and the Titan Dweevil, since they have extremities that reach beyond their usual shadow.
Waterwraith, since its rollers appear from the sky before its body.

Areas have background shadows that are large textures, just like in the previous game, and these shadows sway but do not effect shading in any way. However, now that plants either cast their own shadows or none at all, background shadows do not have to account for the locations of plants in the area, and can add more interest to the look of the environment.

In caves, light is very limited, and sometimes completely absent beyond a certain distance, due to very dark distance fog. Objects are still shaded by some dynamic light to give them depth, but they are barely or not visible until a leader comes close enough with the static area light around them. This static light's radius, color, and brightness vary by sublevel, depending on what mood is being set. Once the Solar System is obtained, however, caves are always fully illuminated and everything is visible. Some sublevels behave this way anyway, such as metal or outdoor areas where backgrounds are visible, and the final sublevel of the Glutton's Kitchen. The Solar System does not affect the final sublevels of the Cavern of Chaos and the Dream Den.

The Piklopedia in Pikmin 2 is unique in that it simulates a full continuous cycle of lighting including nighttime. During night lighting, ambient light is very dim and darkly blue. Objects still remain shaded and cast simple shadows, but generally colors are darker and duller. Once morning comes around sunlight gradually increases fog color advances from blue to purple back to a faint green, when sunlight finally brings the color balance back to its usual daylight look.

Typical passage of sunlight on a day in Pikmin 2.
The simple shadows leaders and Pikmin cast in Pikmin 2.
The texture for background shadows in the Valley of Repose. This no longer accounts for the shadows of plants in the area.
Sunlight and fog color change when the active leader is near an incomplete cave.
Visibility is poor or impossible beyond a leader's radius in caves.
Caves with metallic layouts are more visible, since they have illuminated backgrounds.
With the Solar System, most dark sublevels become fully illuminated.

Pikmin 3

The Wii U can process a great deal more data about lighting 3D objects than the GameCube, and so Pikmin 3 presents a much more accurate representation of physical lighting. All objects in Pikmin 3 cast accurately shaped shadows, including the terrain itself. However, these shadows and lights do not follow the sun depicted in the sky; instead, shadows stay directly under objects for a majority of the day, so that object locations (particularly with airborne objects) can more easily be perceived. A new innovation Pikmin 3 brings is that background shadows, while they are still large textures, actually do affect the shading of other objects, even as they sway throughout the day. This minor detail greatly enhances the realistic look of the environment.

In caves, shadows are also directly under all objects. During rainy days, sunlight is generally darker, and rough surfaces have sharper highlights and smooth surfaces are glossy, to simulate wetness.

Although no other lights in the game than sunlight cast shadows, almost all other light sources are dynamic. Electrodes highlight cave surfaces, leaders' beacons and whistles dimly illuminate a radius around them, and most lighting effects (such as bomb rock explosions) throw accurate light onto other objects. Once again, all these effects give Pikmin 3 a photorealistic edge while still not seriously detracting from gameplay or visibility.

Typical passage of sunlight on a day in Pikmin 3.
Blonde Impostor.jpg

An example of how shadows behave in the Twilight River.
Most lights are dynamic in Pikmin 3; casting highlights even in caves. Shadows in caves are always directly below objects.
Darker colors and glossier surfaces during rain in Pikmin 3.

Materials

The Pikmin series's in-game objects are made real-world materials, or at least materials similar to those in real life. As such, they try to emulate the interactions with light real-world materials would have. Although these properties are more often faked than accurately calculated, materials allow players a sense of how in-game objects would feel, which gives them more thematic identity. Below is a list of material properties simulated in Pikmin materials, and some prominent examples.

Diffuse reflection

Diffuse surfaces have visibly or even microscopically rough imperfections, so that when light rays hit the surface, it bounce off in many directions instead of one, diffusing the illumination over a large area. Due to the limits of the GameCube's power, most organic objects in Pikmin and Pikmin 2 (such as Pikmin and most enemies) have a smooth, matte-like material that does not reflect light sharply. In Pikmin 3, materials meant to look rubbery, dirty, or skin-like will look diffuse.

Bigbox.PNG

Cardboard is a notably diffuse substance.
Diffuse skin on Bulborbs in Pikmin.
Five-man Napsack.jpg

Diffuse cloth in Pikmin 2.
A diffuse Armored Cannon Larva and rock in Pikmin 3.
Rough stone, dirt, and grass surfaces.

Full area map test

High definition map of The Impact Site. This was made by taking screenshots using Dolphin's free camera mode, stitching them together with Hugin, and readjusting any details with GIMP.

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Flowchart styles

Style 1

1-A ─	┌→ 1-B ┐	→ 1-C
	└→ SS1

Style 2

1-A ─	↱ 1-B	↳ 1-C
	↳ SS1

Style 3

1-A →	↗ 1-B ↘	1-C
	↘ SS1

Style 4

	┌	→ 1-B	┐
1-A	┤		└	→ 1-C
	└	→ SS1

Prima Guide section banners

(Pretend the P is the Prima logo.)

Proposal 1

The following information comes from Prima Guides.

Proposal 2

The following information is not found in any canon media, and comes from Prima Guides.

Proposal 3

The following information can only be found in Prima Guides, so it counts as debatable canon.

Size chart

—	100 mm	—
			200 mm (with stem)	100 mm

New cave object layout

Before each list, there'd be a link to an article explaining some details about spawning. These examples are for Dream Den sublevel 3.

Proposal 1

Treasures
- Glee Spinner × 1
Main objects
- Spotty Bulbear × 1 (falls when Pikmin are nearby)
- Dwarf Bulbear × 9
- Electrical wire × 4 (in cave unit seams)
- [icon] Gas pipe × 3
- Careening Dirigibug × 2
- And then 11 objects from the following list:
  - Bomb-rock – 100% (falls when Pikmin are nearby)
Decorative objects
- Glowstem (green) × 6
- Glowstem (red) × 6