game: water shader experiments

assets/shaders/vis_water.tres

@@ -0,0 +1,91 @@
+[gd_resource type="VisualShader" load_steps=9 format=3 uid="uid://fcm46siaht3c"]
+
+[ext_resource type="Texture2D" uid="uid://cqjhrbw36g1hf" path="res://assets/sprites/3xwater.png" id="1_s0q3e"]
+
+[sub_resource type="VisualShaderNodeTexture" id="VisualShaderNodeTexture_wu54b"]
+output_port_for_preview = 0
+texture = ExtResource("1_s0q3e")
+
+[sub_resource type="VisualShaderNodeInput" id="VisualShaderNodeInput_s0q3e"]
+output_port_for_preview = 0
+input_name = "uv2"
+
+[sub_resource type="VisualShaderNodeInput" id="VisualShaderNodeInput_wu54b"]
+input_name = "uv"
+
+[sub_resource type="VisualShaderNodeTexture" id="VisualShaderNodeTexture_2m85h"]
+texture = ExtResource("1_s0q3e")
+
+[sub_resource type="VisualShaderNodeInput" id="VisualShaderNodeInput_nkbt4"]
+expanded_output_ports = [0]
+input_name = "vertex"
+
+[sub_resource type="VisualShaderNodeVectorOp" id="VisualShaderNodeVectorOp_88kc6"]
+default_input_values = [0, Vector2(0, 0), 1, Vector2(50, 50)]
+op_type = 0
+
+[sub_resource type="VisualShaderNodeIf" id="VisualShaderNodeIf_kx7fy"]
+default_input_values = [0, 0.0, 1, 0.0, 2, 1e-05, 3, Vector3(0, 0, 0), 4, Vector3(0, 0, 0), 5, Vector3(100, 0, 0)]
+
+[resource]
+code = "shader_type spatial;
+render_mode blend_mix, depth_draw_opaque, cull_back, diffuse_lambert, specular_schlick_ggx;
+
+
+
+
+void vertex() {
+// Input:3
+	vec3 n_out3p0 = VERTEX;
+	float n_out3p2 = n_out3p0.g;
+
+
+	vec3 n_out5p0;
+// If:5
+	float n_in5p1 = 0.00000;
+	float n_in5p2 = 0.00001;
+	vec3 n_in5p3 = vec3(0.00000, 0.00000, 0.00000);
+	vec3 n_in5p4 = vec3(0.00000, 0.00000, 0.00000);
+	vec3 n_in5p5 = vec3(100.00000, 0.00000, 0.00000);
+	if(abs(n_out3p2 - n_in5p1) < n_in5p2)
+	{
+		n_out5p0 = n_in5p3;
+	}
+	else if(n_out3p2 < n_in5p1)
+	{
+		n_out5p0 = n_in5p5;
+	}
+	else
+	{
+		n_out5p0 = n_in5p4;
+	}
+
+
+// VectorOp:4
+	vec2 n_out4p0 = vec2(n_out3p0.xy) + vec2(n_out5p0.xy);
+
+
+// Output:0
+	VERTEX = vec3(n_out4p0, 0.0);
+
+
+}
+"
+graph_offset = Vector2(-22.2715, 18.9148)
+nodes/vertex/0/position = Vector2(1160, 240)
+nodes/vertex/2/node = SubResource("VisualShaderNodeTexture_2m85h")
+nodes/vertex/2/position = Vector2(40, 280)
+nodes/vertex/3/node = SubResource("VisualShaderNodeInput_nkbt4")
+nodes/vertex/3/position = Vector2(300, 140)
+nodes/vertex/4/node = SubResource("VisualShaderNodeVectorOp_88kc6")
+nodes/vertex/4/position = Vector2(860, 120)
+nodes/vertex/5/node = SubResource("VisualShaderNodeIf_kx7fy")
+nodes/vertex/5/position = Vector2(640, 340)
+nodes/vertex/connections = PackedInt32Array(3, 0, 4, 0, 3, 2, 5, 0, 5, 0, 4, 1, 4, 0, 0, 0)
+nodes/fragment/0/position = Vector2(840, 100)
+nodes/fragment/2/node = SubResource("VisualShaderNodeTexture_wu54b")
+nodes/fragment/2/position = Vector2(260, 180)
+nodes/fragment/3/node = SubResource("VisualShaderNodeInput_s0q3e")
+nodes/fragment/3/position = Vector2(-140, 200)
+nodes/fragment/4/node = SubResource("VisualShaderNodeInput_wu54b")
+nodes/fragment/4/position = Vector2(540, 220)

assets/shaders/water.gdshader

@@ -0,0 +1,36 @@
+shader_type canvas_item;
+
+// Parameters
+uniform sampler2D water_texture;      // Your 3x3 water texture
+uniform vec4 water_color : source_color = vec4(0.0, 0.0, 1.0, 1.0);
+uniform float speed : hint_range(0.0, 10.0) = 1.0;
+uniform float strength : hint_range(0.0, 0.2) = 0.05;
+uniform float tile_repeat : hint_range(1.0, 10.0) = 3.0;
+uniform vec2 pan_speed = vec2(0.2, 0.1); // how fast the water texture moves
+
+void fragment() {
+    vec2 uv = UV;
+
+    // Sample the base tile texture
+    vec4 base_tex = texture(TEXTURE, uv);
+
+    // Compute mask for water pixels only
+    float is_water = step(0.8, 1.0 - distance(base_tex.rgb, water_color.rgb));
+
+    // Tile the water texture
+    vec2 water_uv = uv * tile_repeat;
+	water_uv = fract(water_uv);
+
+    // Apply panning / movement
+    water_uv += pan_speed * TIME;
+
+    // Add wave distortion on top of the moving texture
+    water_uv.y += sin(water_uv.x * 2.0 + TIME * speed) * strength * is_water;
+    water_uv.x += cos(water_uv.y * 2.0 + TIME * speed * 0.5) * strength * is_water;
+
+    // Sample the animated water texture
+    vec4 water_sample = texture(water_texture, water_uv);
+
+    // Combine: water animates, other pixels stay the same
+    COLOR = mix(base_tex, water_sample, is_water);
+}

assets/shaders/water.gdshader.uid

@@ -0,0 +1 @@
+uid://dxlfb81ouff0w

assets/shaders/water2.gdshader

@@ -0,0 +1,27 @@
+shader_type canvas_item;
+uniform vec4 water_color : source_color = vec4(0.0, 0.0, 1.0, 1.0);
+uniform sampler2D noise_tex;     // noise texture
+uniform vec2 noise_speed = vec2(0.05, 0.01);
+uniform float noise_strength = 0.2; // how much to lighten/darken
+
+void fragment() {
+	vec2 uv = UV;
+	vec4 base_tex = texture(TEXTURE, uv);
+	float is_water = step(0.8, 1.0 - distance(base_tex.rgb, water_color.rgb));
+	
+	// Scroll UVs for noise animation
+    vec2 noise_uv = SCREEN_UV + noise_speed * TIME;
+    vec4 noise_sample = texture(noise_tex, fract(noise_uv));
+	
+	// Use noise (0..1) to brighten/darken the water color
+    float brightness = (noise_sample.r - 0.5) * 2.0 * noise_strength; 
+    vec4 animated_water = water_color + vec4(vec3(brightness), 0.0);
+
+	
+	COLOR = mix(base_tex, animated_water, is_water);
+}
+
+//void light() {
+//	// Called for every pixel for every light affecting the material.
+//	// Uncomment to replace the default light processing function with this one.
+//}

assets/shaders/water2.gdshader.uid

@@ -0,0 +1 @@
+uid://clpp23h7fpamt

assets/sprites/3xwater.png.import

@@ -0,0 +1,35 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cqjhrbw36g1hf"
+path.s3tc="res://.godot/imported/3xwater.png-bfe2954a002ead9d6959c0ddfb1ffb13.s3tc.ctex"
+metadata={
+"imported_formats": ["s3tc_bptc"],
+"vram_texture": true
+}
+
+[deps]
+
+source_file="res://assets/sprites/3xwater.png"
+dest_files=["res://.godot/imported/3xwater.png-bfe2954a002ead9d6959c0ddfb1ffb13.s3tc.ctex"]
+
+[params]
+
+compress/mode=2
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=true
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0

assets/sprites/water_texture.tres

@@ -0,0 +1,3 @@
+[gd_resource type="ImageTexture" format=3 uid="uid://de02afow3ilxd"]
+
+[resource]

scenes/tiles/tileset.tres

@@ -1,10 +1,31 @@
-[gd_resource type="TileSet" load_steps=4 format=3 uid="uid://c3clgitssvdlg"]
+[gd_resource type="TileSet" load_steps=8 format=3 uid="uid://c3clgitssvdlg"]
 
 [ext_resource type="Texture2D" uid="uid://2xgqhe7u6lfq" path="res://assets/sprites/roguelikeSheet_transparent.png" id="1_kkifh"]
+[ext_resource type="Shader" uid="uid://clpp23h7fpamt" path="res://assets/shaders/water2.gdshader" id="1_n3s2j"]
 
 [sub_resource type="TileMapPattern" id="TileMapPattern_beh8d"]
 tile_data = PackedInt32Array(0, 655360, 7, 65536, 655360, 8, 131072, 655360, 9, 1, 720896, 7, 65537, 720896, 8, 131073, 720896, 9, 2, 786432, 7, 65538, 786432, 8, 131074, 786432, 9)
 
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_n3s2j"]
+seed = 3
+frequency = 0.0066
+fractal_type = 2
+fractal_gain = 0.435
+fractal_weighted_strength = 1.0
+
+[sub_resource type="NoiseTexture2D" id="NoiseTexture2D_m3ddo"]
+width = 2048
+height = 2048
+seamless = true
+noise = SubResource("FastNoiseLite_n3s2j")
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_n3s2j"]
+shader = ExtResource("1_n3s2j")
+shader_parameter/water_color = Color(0.388235, 0.772549, 0.811765, 1)
+shader_parameter/noise_tex = SubResource("NoiseTexture2D_m3ddo")
+shader_parameter/noise_speed = Vector2(0.03, 0.01)
+shader_parameter/noise_strength = 0.05
+
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_s7nh2"]
 texture = ExtResource("1_kkifh")
 separation = Vector2i(1, 1)
@@ -13,6 +34,7 @@ separation = Vector2i(1, 1)
 1:0/0 = 0
 1:0/0/terrain_set = 0
 2:0/0 = 0
+2:0/0/material = SubResource("ShaderMaterial_n3s2j")
 2:0/0/terrain_set = 0
 2:0/0/terrain = 1
 2:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(8, -6.02527, 8, 8, -5.84541, 8, -3.95689, -2.96767)
@@ -25,6 +47,7 @@ separation = Vector2i(1, 1)
 2:0/0/terrains_peering_bit/top_side = 0
 2:0/0/terrains_peering_bit/top_right_corner = 0
 3:0/0 = 0
+3:0/0/material = SubResource("ShaderMaterial_n3s2j")
 3:0/0/terrain_set = 0
 3:0/0/terrain = 1
 3:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(8, 8, -8, 8, -8, -5.84541, 8, -5.75548)
@@ -37,6 +60,7 @@ separation = Vector2i(1, 1)
 3:0/0/terrains_peering_bit/top_side = 0
 3:0/0/terrains_peering_bit/top_right_corner = 0
 4:0/0 = 0
+4:0/0/material = SubResource("ShaderMaterial_n3s2j")
 4:0/0/terrain_set = 0
 4:0/0/terrain = 1
 4:0/0/physics_layer_0/polygon_0/points = PackedVector2Array(6.02527, 8, -8, 8, -8, -5.84541, 2.96767, -3.95689)
@@ -124,6 +148,7 @@ separation = Vector2i(1, 1)
 1:1/0/terrains_peering_bit/top_side = 1
 1:1/0/terrains_peering_bit/top_right_corner = 1
 2:1/0 = 0
+2:1/0/material = SubResource("ShaderMaterial_n3s2j")
 2:1/0/terrain_set = 0
 2:1/0/terrain = 1
 2:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(8, -8, 8, 8, -5.84541, 8, -5.75548, -8)
@@ -136,6 +161,7 @@ separation = Vector2i(1, 1)
 2:1/0/terrains_peering_bit/top_side = 1
 2:1/0/terrains_peering_bit/top_right_corner = 1
 3:1/0 = 0
+3:1/0/material = SubResource("ShaderMaterial_n3s2j")
 3:1/0/terrain_set = 0
 3:1/0/terrain = 1
 3:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, 8, -8, -8, 8, -8, 8, 8)
@@ -148,6 +174,7 @@ separation = Vector2i(1, 1)
 3:1/0/terrains_peering_bit/top_side = 1
 3:1/0/terrains_peering_bit/top_right_corner = 1
 4:1/0 = 0
+4:1/0/material = SubResource("ShaderMaterial_n3s2j")
 4:1/0/terrain_set = 0
 4:1/0/terrain = 1
 4:1/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, 8, -8, -8, 5.84541, -8, 5.75548, 8)
@@ -245,6 +272,7 @@ separation = Vector2i(1, 1)
 1:2/0/terrains_peering_bit/top_side = 1
 1:2/0/terrains_peering_bit/top_right_corner = 1
 2:2/0 = 0
+2:2/0/material = SubResource("ShaderMaterial_n3s2j")
 2:2/0/terrain_set = 0
 2:2/0/terrain = 1
 2:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-6.02527, -8, 8, -8, 8, 5.84541, -2.96767, 3.95689)
@@ -257,6 +285,7 @@ separation = Vector2i(1, 1)
 2:2/0/terrains_peering_bit/top_side = 1
 2:2/0/terrains_peering_bit/top_right_corner = 1
 3:2/0 = 0
+3:2/0/material = SubResource("ShaderMaterial_n3s2j")
 3:2/0/terrain_set = 0
 3:2/0/terrain = 1
 3:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, -8, 8, -8, 8, 5.84541, -8, 5.75548)
@@ -269,6 +298,7 @@ separation = Vector2i(1, 1)
 3:2/0/terrains_peering_bit/top_side = 1
 3:2/0/terrains_peering_bit/top_right_corner = 1
 4:2/0 = 0
+4:2/0/material = SubResource("ShaderMaterial_n3s2j")
 4:2/0/terrain_set = 0
 4:2/0/terrain = 1
 4:2/0/physics_layer_0/polygon_0/points = PackedVector2Array(-8, 6.02527, -8, -8, 5.84541, -8, 3.95689, 2.96767)