Add water shader (#77)

README.md

@@ -21,6 +21,7 @@ A 2d [rapier](https://github.com/dimforge/rapier) physics server for [Godot Engi
 
 <p align="center">
 <img src="rapier-vid.gif"/>
+<img src="fluid_shader.gif"/>
 </p>
 
 # Features
@@ -31,11 +32,6 @@ A 2d [rapier](https://github.com/dimforge/rapier) physics server for [Godot Engi
 - *DISABLED* 32 bits and 64 bits support.
 - *DISABLED* Cross platform determinism.
 
-
-<p align="center">
-<img src="Fluid2d.gif"/>
-</p>
-
 # Limitations
 
 - SeparationRay2D missing [issues/5](https://github.com/appsinacup/godot-rapier-2d/issues/5)

bin/samples/godot-rapier2d/Fluid2DRenderer.gd

@@ -16,12 +16,8 @@ func _process(_delta):
 	for i in points.size():
 		var point = points[i]
 		var created_at = create_times[i]
-		var life_remain = fluid.lifetime - (current_time - created_at) / 1000.0 + 0.5
 		var new_transform: Transform2D = Transform2D()
-		if fluid.lifetime == 0:
-			life_remain = 1
-		var new_color : Color = Color(color, life_remain)
 		new_transform.origin = point - position
 		multimesh.set_instance_transform_2d(index, new_transform)
-		multimesh.set_instance_color(index, new_color)
+		multimesh.set_instance_color(index, color)
 		index += 1

bin/samples/godot-rapier2d/Radial2D.svg.import

@@ -0,0 +1,38 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cho3shol3rky2"
+path="res://.godot/imported/Radial2D.svg-49bed34ceba3cc8d0afeacd9b5c1c480.ctex"
+metadata={
+"has_editor_variant": true,
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://samples/godot-rapier2d/Radial2D.svg"
+dest_files=["res://.godot/imported/Radial2D.svg-49bed34ceba3cc8d0afeacd9b5c1c480.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+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=1
+svg/scale=1.0
+editor/scale_with_editor_scale=true
+editor/convert_colors_with_editor_theme=false

bin/samples/godot-rapier2d/fluid_multi_mesh.tres

@@ -1,19 +1,19 @@
 [gd_resource type="MultiMesh" load_steps=2 format=3 uid="uid://d0bhettx43xt1"]
 
-[sub_resource type="ArrayMesh" id="ArrayMesh_gi4ki"]
+[sub_resource type="ArrayMesh" id="ArrayMesh_gnmrl"]
 _surfaces = [{
 "2d": true,
 "aabb": AABB(-16, -16, 0, 32, 32, 0),
-"attribute_data": PackedByteArray(0, 0, 128, 63, 154, 153, 129, 62, 0, 0, 128, 63, 0, 0, 112, 63, 102, 102, 118, 63, 0, 0, 112, 63, 205, 204, 76, 63, 0, 0, 128, 63, 0, 0, 0, 0, 0, 0, 128, 63, 0, 0, 0, 0, 0, 0, 168, 62, 0, 0, 0, 61, 102, 102, 166, 61, 0, 0, 0, 61, 0, 0, 0, 0, 51, 51, 59, 63, 0, 0, 0, 0),
+"attribute_data": PackedByteArray(0, 0, 128, 63, 102, 102, 6, 62, 0, 0, 128, 63, 51, 51, 95, 63, 51, 51, 67, 63, 0, 0, 128, 63, 0, 0, 0, 0, 0, 0, 128, 63, 0, 0, 0, 0, 154, 153, 105, 62, 0, 0, 0, 61, 154, 153, 25, 60, 51, 51, 87, 63, 0, 0, 0, 0),
 "format": 34393296913,
-"index_count": 21,
-"index_data": PackedByteArray(8, 0, 0, 0, 1, 0, 2, 0, 3, 0, 4, 0, 4, 0, 5, 0, 6, 0, 6, 0, 7, 0, 8, 0, 8, 0, 1, 0, 2, 0, 2, 0, 4, 0, 6, 0, 6, 0, 8, 0, 2, 0),
+"index_count": 15,
+"index_data": PackedByteArray(6, 0, 0, 0, 1, 0, 1, 0, 2, 0, 3, 0, 3, 0, 4, 0, 5, 0, 5, 0, 6, 0, 1, 0, 1, 0, 3, 0, 5, 0),
 "primitive": 3,
 "uv_scale": Vector4(0, 0, 0, 0),
-"vertex_count": 9,
-"vertex_data": PackedByteArray(0, 0, 128, 65, 204, 204, 252, 192, 0, 0, 128, 65, 0, 0, 96, 65, 204, 204, 108, 65, 0, 0, 96, 65, 154, 153, 25, 65, 0, 0, 128, 65, 0, 0, 128, 193, 0, 0, 128, 65, 0, 0, 128, 193, 0, 0, 176, 192, 0, 0, 112, 193, 102, 102, 86, 193, 0, 0, 112, 193, 0, 0, 128, 193, 204, 204, 236, 64, 0, 0, 128, 193)
+"vertex_count": 7,
+"vertex_data": PackedByteArray(0, 0, 128, 65, 205, 204, 60, 193, 0, 0, 128, 65, 102, 102, 62, 65, 102, 102, 6, 65, 0, 0, 128, 65, 0, 0, 128, 193, 0, 0, 128, 65, 0, 0, 128, 193, 51, 51, 11, 193, 0, 0, 112, 193, 51, 51, 123, 193, 102, 102, 46, 65, 0, 0, 128, 193)
 }]
 
 [resource]
 use_colors = true
-mesh = SubResource("ArrayMesh_gi4ki")
+mesh = SubResource("ArrayMesh_gnmrl")