More work on maps and multiplayer

visuals/materials/maptile.tres

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+[gd_resource type="ShaderMaterial" load_steps=4 format=3 uid="uid://dljweksgxvqv6"]
+
+[ext_resource type="Shader" uid="uid://dtq021j73hhht" path="res://visuals/shaders/maptile.gdshader" id="1_o0obt"]
+
+[sub_resource type="Gradient" id="Gradient_2ho3f"]
+offsets = PackedFloat32Array(0, 0.245, 0.56, 0.8025, 1)
+colors = PackedColorArray(0, 0, 0.003921569, 1, 1.6845763e-06, 0, 0.54036456, 1, 0.0007814509, 0.22053, 0.7667125, 1, 0.00022246034, 0.29345024, 0.68059045, 1, 0, 0.49560964, 0.86397636, 1)
+
+[sub_resource type="GradientTexture1D" id="GradientTexture1D_lvjv7"]
+gradient = SubResource("Gradient_2ho3f")
+width = 1024
+
+[resource]
+render_priority = 0
+shader = ExtResource("1_o0obt")
+shader_parameter/height_gradient = SubResource("GradientTexture1D_lvjv7")
+shader_parameter/vertical_offset = 9999.0
+shader_parameter/vertical_range = 6.0

visuals/shaders/maptile.gdshader

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+shader_type spatial;
+
+uniform sampler2D height_gradient;
+uniform float vertical_offset;
+uniform float vertical_range : hint_range(1.0, 12.0, 1.0);
+varying vec3 world_position;
+
+void vertex() {
+	// Called for every vertex the material is visible on.
+	world_position = (MODEL_MATRIX * vec4(VERTEX, 1)).xyz;
+}
+
+void fragment() {
+	float h = (world_position.y - vertical_offset)/vertical_range;
+	vec2 uv = vec2(clamp(h, 0.001, 1.0),0.5);
+	vec4 color = texture(height_gradient, uv);
+	ALBEDO = color.rgb;
+	// Called for every pixel the material is visible on.
+}
+
+//void light() {
+//	// Called for every pixel for every light affecting the material.
+//	// Uncomment to replace the default light processing function with this one.
+//}

visuals/shaders/maptile.gdshader.uid

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+uid://dtq021j73hhht