tmx/
layer.rs

1use super::*;
2use glam::{IVec2, UVec2, Vec4};
3
4/// A layer
5pub enum Layer {
6    /// A layer densely populated with tiles.
7    TileLayer {
8        /// The amount of tiles in the x and y axis.
9        size: UVec2,
10        /// Position offset of the layer, measured in tiles.
11        position: IVec2,
12        /// Position offset of the layer, measured in pixels.
13        offset: IVec2,
14        /// Parallax factor for this layer.
15        parallax: Vec2,
16        /// Color to multiply the contents of this layer with.
17        color: Vec4,
18        /// Whether this layer is visible or not.
19        /// Contents of invisible layers will have their `Draw` component set to invisible.
20        visible: bool,
21        /// Tile data (global tile ids) for this layer, row by row.
22        data: Vec<u32>,
23    },
24    /// A layer populated with individual objects.
25    ObjectLayer {
26        /// Whether to draw objects ordered by index of appearance (true) or y coordinate (false).
27        draworder_index: bool,
28        /// The objects in the layer.
29        objects: Vec<Object>,
30        /// Position offset of the layer, measured in tiles.
31        offset: IVec2,
32        /// Parallax factor for this layer.
33        parallax: Vec2,
34        /// Color to multiply the contents of this layer with.
35        color: Vec4,
36        /// Whether this layer is visible or not.
37        /// Contents of invisible layers will have their `Draw` component set to invisible.
38        visible: bool,
39    },
40    /// A layer populated with a single big image, like a background.
41    ImageLayer {
42        /// The image contained in this layer.
43        image: Texture,
44        /// Position offset of the layer, measured in tiles.
45        offset: IVec2,
46        /// Parallax factor for this layer.
47        parallax: Vec2,
48        /// Color to multiply the contents of this layer with.
49        color: Vec4,
50        /// Whether this layer is visible or not.
51        /// Contents of invisible layers will have their `Draw` component set to invisible.
52        visible: bool,
53    },
54    /// A set of layers grouped together, mainly for convenience in the map editor.
55    Group {
56        /// The layers that were grouped together.
57        layers: Vec<Layer>,
58    },
59}
60
61impl Layer {
62    /*pub(crate) fn set_visible(&mut self, new_visible: bool) {
63        match self {
64            Layer::TileLayer { visible, .. }
65            | Layer::ObjectLayer { visible, .. }
66            | Layer::ImageLayer { visible, .. } => *visible = new_visible,
67            Layer::Group { layers } => {
68                for l in layers.iter_mut() {
69                    l.set_visible(new_visible);
70                }
71            }
72        }
73    }*/
74
75    pub(crate) fn add_offset(&mut self, x: i32, y: i32) {
76        match self {
77            Layer::TileLayer { offset, .. } => {
78                offset.x += x;
79                offset.y += y;
80            }
81            Layer::ObjectLayer { offset, .. } => {
82                offset.x += x;
83                offset.y += y;
84            }
85            Layer::ImageLayer { offset, .. } => {
86                offset.x += x;
87                offset.y += y;
88            }
89            Layer::Group { layers } => {
90                for l in layers.iter_mut() {
91                    l.add_offset(x, y);
92                }
93            }
94        }
95    }
96
97    pub(crate) fn mul_parallax(&mut self, x: f32, y: f32) {
98        match self {
99            Layer::TileLayer { parallax, .. } => {
100                parallax.x *= x;
101                parallax.y *= y;
102            }
103            Layer::ObjectLayer { parallax, .. } => {
104                parallax.x *= x;
105                parallax.y *= y;
106            }
107            Layer::ImageLayer { parallax, .. } => {
108                parallax.x *= x;
109                parallax.y *= y;
110            }
111            Layer::Group { layers } => {
112                for l in layers.iter_mut() {
113                    l.mul_parallax(x, y);
114                }
115            }
116        }
117    }
118
119    pub(crate) fn mul_color(&mut self, o: Vec4) {
120        match self {
121            Layer::TileLayer { color, .. }
122            | Layer::ObjectLayer { color, .. }
123            | Layer::ImageLayer { color, .. } => {
124                *color *= o;
125            }
126            Layer::Group { layers } => {
127                for l in layers.iter_mut() {
128                    l.mul_color(o);
129                }
130            }
131        }
132    }
133}
tmx/layer.rs

tmx/
layer.rs
