Initial commit

src/infrastructure/road.zig

@@ -0,0 +1,40 @@
+const rl = @import("raylib");
+
+const c = @import("../constants.zig");
+const Node = @import("node.zig").Node;
+
+pub const Road = struct {
+    /// Road ID, used for identification, particularly as we'll access all entities via pointers
+    id: usize,
+    /// Pointers to the nodes that encapsulated our road
+    nodes: [2]*Node,
+    /// Calculated road length
+    length: f32,
+
+    pub fn init(new_id: usize, start: *Node, end: *Node) Road {
+        var road: Road = .{
+            .id = new_id,
+            .nodes = .{start, end},
+            .length = 0,
+        };
+
+        road.length = road.calculate_length();
+        return road;
+    }
+
+    /// Calculates length of the road by taking its two nodes
+    fn calculate_length(self: *const Road) f32 {
+        const start = self.nodes[0];
+        const end = self.nodes[1];
+
+        const x_diff = end.*.pos.x - start.*.pos.x;
+        const y_diff = end.*.pos.y - start.*.pos.y;
+        const square_diff = x_diff * x_diff + y_diff * y_diff;
+
+        return @sqrt(square_diff);
+    }
+
+    pub fn draw(self: *const Road) void {
+        rl.drawLineEx(self.nodes[0].*.pos, self.nodes[1].*.pos, c.ROAD_SIZE, c.ROAD_COLOUR);
+    }
+};