Added object sprite animations

assets

@@ -1 +1 @@
-Subproject commit 05e5272f3789b44192d0bf2bd253641e76659a2a
+Subproject commit 38fd6766762ce90bb699f98e30e46b17c4eda50c

content/ship.toml

@@ -1,5 +1,5 @@
 [ship."Gypsum"]
-sprite = "ship::gypsum"
+sprite = "ship::peregrine"
 size = 100
 mass = 1
 hull = 200

content/sprite.toml

@@ -19,6 +19,23 @@ file = "projectile/blaster.png"
 [sprite."ship::gypsum"]
 file = "ship/gypsum.png"
 
+[sprite."ship::peregrine"]
+duration = 1
+repeat = "repeat"
+frames = [
+	"ship/peregrine/01.png",
+	"ship/peregrine/02.png",
+	"ship/peregrine/03.png",
+	"ship/peregrine/04.png",
+	"ship/peregrine/05.png",
+	"ship/peregrine/06.png",
+	"ship/peregrine/07.png",
+	"ship/peregrine/08.png",
+	"ship/peregrine/09.png",
+	"ship/peregrine/10.png",
+	"ship/peregrine/11.png",
+]
+
 [sprite."ui::radar"]
 file = "ui/radar.png"
 

crates/render/shaders/object.wgsl

@@ -26,7 +26,39 @@ var texture_array: binding_array<texture_2d<f32>>;
 var sampler_array: binding_array<sampler>;
 
 
+fn fmod(x: f32, m: f32) -> f32 {
+	return x - floor(x / m) * m;
+}
 
+// Returns texture index
+// TODO: random age
+// TODO: preprocessor include function
+// TODO: packed location config, better error
+// TODO: bounce animations
+// TODO: animation randomness?
+fn animate(instance: InstanceInput) -> u32 {
+	// Age doesn't make sense here, so arbitrarily pick zero.
+	let age = global.current_time.x;
+	let len = sprites.data[instance.texture_index].frame_count;
+	let rep = sprites.data[instance.texture_index].repeatmode;
+	let fps = sprites.data[instance.texture_index].fps;
+	var frame: u32 = u32(0);
+	if rep == u32(1) {
+		// Repeat
+		frame = u32(fmod(
+			(age / fps),
+			f32(len)
+		));
+	} else {
+		// Once
+		frame = u32(min(
+			(age / fps),
+			f32(len) - 1.0
+		));
+	}
+	
+	return frame + sprites.data[instance.texture_index].first_frame;
+}
 
 @vertex
 fn vertex_main(
@@ -44,8 +76,7 @@ fn vertex_main(
 	var out: VertexOutput;
 	out.position = transform * vec4<f32>(vertex.position, 1.0);
 
-	let i = sprites.data[instance.texture_index].first_frame;
-	let t = atlas.data[i];
+	let t = atlas.data[animate(instance)];
 	out.texture_index = u32(0);
 	out.texture_coords = vec2(t.xpos, t.ypos);
 	if vertex.texture_coords.x == 1.0 {

crates/render/shaders/particle.wgsl

@@ -29,6 +29,30 @@ var texture_array: binding_array<texture_2d<f32>>;
 var sampler_array: binding_array<sampler>;
 
 
+// Returns texture index
+fn animate(instance: InstanceInput) -> u32 {
+	let age = global.current_time.x - instance.created;
+	let len = sprites.data[instance.texture_index].frame_count;
+	let rep = sprites.data[instance.texture_index].repeatmode;
+	let fps = sprites.data[instance.texture_index].fps;
+	var frame: u32 = u32(0);
+	if rep == u32(1) {
+		// Repeat
+		frame = u32(fmod(
+			(age / fps),
+			f32(len)
+		));
+	} else {
+		// Once
+		frame = u32(min(
+			(age / fps),
+			f32(len) - 1.0
+		));
+	}
+	
+	return frame + sprites.data[instance.texture_index].first_frame;
+}
+
 fn fmod(x: f32, m: f32) -> f32 {
 	return x - floor(x / m) * m;
 }
@@ -68,10 +92,7 @@ fn vertex_main(
 		));
 	}
 
-
-	// Pick image
-	frame = frame + sprites.data[instance.texture_index].first_frame;
-	let t = atlas.data[frame];
+	let t = atlas.data[animate(instance)];
 	out.texture_index = u32(0);
 	out.texture_coords = vec2(t.xpos, t.ypos);
 	if vertex.texture_coords.x == 1.0 {