From 6429b68654f9db2b611285ab53381fe7832e53a1 Mon Sep 17 00:00:00 2001
From: Evan Pratten <ewpratten@gmail.com>
Date: Sat, 2 Apr 2022 20:13:31 -0400
Subject: [PATCH] Allow friction and temperature sampling

---
 .../src/rendering/utilities/map_render.rs     | 64 +++++++++++++++++--
 1 file changed, 58 insertions(+), 6 deletions(-)

diff --git a/game/game_logic/src/rendering/utilities/map_render.rs b/game/game_logic/src/rendering/utilities/map_render.rs
index 6fc5852d..f950d5a5 100644
--- a/game/game_logic/src/rendering/utilities/map_render.rs
+++ b/game/game_logic/src/rendering/utilities/map_render.rs
@@ -13,7 +13,7 @@ use raylib::{
     texture::Texture2D,
     RaylibHandle, RaylibThread,
 };
-use tiled::{Loader, Map, ResourceCache, ResourcePath, ResourcePathBuf, Tileset};
+use tiled::{Loader, Map, PropertyValue, ResourceCache, ResourcePath, ResourcePathBuf, Tileset};
 
 /// Possible errors generated by the map loading process
 #[derive(Debug, thiserror::Error)]
@@ -131,22 +131,74 @@ impl MapRenderer {
         })
     }
 
-    pub fn sample_friction_at(&self, world_position: na::Vector2<f32>) -> f32 {
+    pub fn sample_friction_at(&self, world_position: na::Vector2<f32>) -> Option<f32> {
         // Convert to a tile position
         let tile_position = na::Vector2::new(
             (world_position.x / 128.0).floor() as i32,
             (world_position.y / 128.0).floor() as i32,
         );
-        todo!()
+
+        // Get the first layer
+        let layer = self.map.layers().next().unwrap();
+
+        // Handle the layer type
+        match layer.layer_type() {
+            tiled::LayerType::TileLayer(layer) => {
+                // Get the tile
+                if let Some(tile) = layer.get_tile(tile_position.x, tile_position.y) {
+                    if let Some(tile) = tile.get_tile() {
+                        if let Some(data) = tile.data.properties.get("friction") {
+                            match data {
+                                PropertyValue::FloatValue(f) => Some(*f),
+                                _ => None,
+                            }
+                        } else {
+                            None
+                        }
+                    } else {
+                        None
+                    }
+                } else {
+                    None
+                }
+            }
+            _ => None,
+        }
     }
 
-    pub fn sample_temperature_at(&self, world_position: na::Vector2<f32>) -> f32 {
+    pub fn sample_temperature_at(&self, world_position: na::Vector2<f32>) -> Option<f32> {
         // Convert to a tile position
         let tile_position = na::Vector2::new(
             (world_position.x / 128.0).floor() as i32,
             (world_position.y / 128.0).floor() as i32,
         );
-        todo!()
+
+        // Get the first layer
+        let layer = self.map.layers().next().unwrap();
+
+        // Handle the layer type
+        match layer.layer_type() {
+            tiled::LayerType::TileLayer(layer) => {
+                // Get the tile
+                if let Some(tile) = layer.get_tile(tile_position.x, tile_position.y) {
+                    if let Some(tile) = tile.get_tile() {
+                        if let Some(data) = tile.data.properties.get("temperature") {
+                            match data {
+                                PropertyValue::FloatValue(f) => Some(*f),
+                                _ => None,
+                            }
+                        } else {
+                            None
+                        }
+                    } else {
+                        None
+                    }
+                } else {
+                    None
+                }
+            }
+            _ => None,
+        }
     }
 
     pub fn render_map(
@@ -330,7 +382,7 @@ impl MapRenderer {
                                                         width: tex.width as f32,
                                                         height: tex.height as f32,
                                                     };
-    
+
                                                     draw_handle.draw_texture_pro(
                                                         &tex,
                                                         r1,