schme/slime-moldies
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some diffuse added for funzies

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This commit is contained in:
Kasper
2025-08-03 02:24:32 +03:00
parent b10deff5e0
commit 761a1b63f4
4 changed files with 32 additions and 14 deletions
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15
shaders/agent_shader.gdshader
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@@ -1,8 +1,17 @@
shader_type canvas_item;
// Snippets of code drawn from https://gist.github.com/Bleuje/1e497df4505ca24c39ab3930a95700b3
uniform sampler2D sim_texture;
void fragment() {
vec3 c = texture(sim_texture, UV).rgb;
COLOR = vec4(c, 1.0);
float gn(in vec2 coordinate, in float seed){
return fract(tan(distance(coordinate*(seed+0.118446744073709551614), vec2(0.118446744073709551614, 0.314159265358979323846264)))*0.141421356237309504880169);
}
void fragment() {
vec3 orig = texture(sim_texture, UV).rgb;
float agent = orig.r;
float trail = orig.g;
COLOR = vec4(agent, trail, orig.b, 1.0);
}

15
shaders/dissolve.gdshader
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@@ -5,7 +5,16 @@ uniform sampler2D sim_texture;
uniform float decay_factor;
void fragment() {
float c = texture(sim_texture, UV).r;
c = c * decay_factor;
COLOR = vec4(c, c, c, 1.0);
vec3 orig = texture(sim_texture, UV).rgb;
float trail = texture(sim_texture, UV).g;
float sum = 0.0;
for(int i=-1;i<=1;i++) {
for(int j=-1;j<=1;j++) {
sum += texture(sim_texture, UV).g;
}
}
trail = sum / 9.0;
trail = trail * decay_factor;
COLOR = vec4(orig.r, trail, orig.b, 1.0);
}

14
slime_simulation.gd
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@@ -12,8 +12,8 @@ extends Node2D
@onready var trail_shader: ShaderMaterial = $SubViewport2/Pass.material
const MAX_TEXTURES: int = 2
var next_texture: int = 0
var frame_count: int = 0
var _next_texture: int = 0
var _frame_count: int = 0
func _ready():
@@ -21,12 +21,12 @@ func _ready():
func _process(_delta: float) -> void:
next_texture = (next_texture + 1) % MAX_TEXTURES
_next_texture = (_next_texture + 1) % MAX_TEXTURES
RenderingServer.call_on_render_thread(
_render_process.bind(next_texture, frame_count, decay_factor)
_render_process.bind(_next_texture, _frame_count, decay_factor)
)
frame_count = frame_count + 1
_frame_count = _frame_count + 1
# Below is for rendering
@@ -42,14 +42,14 @@ func _create_initial_sim_texture(width: int, height: int) -> ImageTexture:
return sim_texture
func _initialize_render(width: int, height: int) -> void:
func _initialize_render(_width: int, _height: int) -> void:
rd = RenderingServer.get_rendering_device()
trail_shader.set_shader_parameter("sim_texture", pass_viewport.get_texture().get_rid())
trail_shader.set_shader_parameter("decay_factor", decay_factor)
func _render_process(next_texture: int, frame_count: int, decay_factor: float) -> void:
func _render_process(__next_texture: int, frame_count: int, decay_factor: float) -> void:
if frame_count > 0:
agent_shader.set_shader_parameter("sim_texture", pass2_viewport.get_texture().get_rid())

2
slime_simulation.tscn
View File

@@ -32,7 +32,7 @@ size = Vector2(1920, 1080)
[sub_resource type="ShaderMaterial" id="ShaderMaterial_g2c28"]
shader = ExtResource("3_s6nlv")
shader_parameter/sim_texture = SubResource("Texture2DRD_s6nlv")
shader_parameter/decay_factor = 0.95
shader_parameter/decay_factor = 0.99
[node name="SlimeSimulation" type="Node2D"]
script = ExtResource("1_s6nlv")