ajout de panneaux de contrôles, de paramètres et refactorisation de la gestion de l'audio

common/vfx/materials/shaders/tilemap_repeat_texture.gdshader

@@ -0,0 +1,21 @@
+shader_type canvas_item;
+
+uniform sampler2D overlay_tex: repeat_enable, filter_nearest;
+uniform float scale = 0.006944444; // calculated by 1/texture size e.g. 1/144
+varying vec2 world_position;
+
+void vertex(){
+	// calculate the world position for use in the fragment shader
+    world_position = (MODEL_MATRIX * vec4(VERTEX, 0.0, 1.0)).xy;
+}
+
+void fragment() {
+	// only apply overlay_tex on the fully red parts of the original tiles
+	float mix_amount = floor(COLOR.r);
+
+	// sample the overlay_tex using worldPos
+	vec4 overlay_color = texture(overlay_tex, world_position * scale);
+
+	// combine original color and overlay color together
+	COLOR = mix(COLOR, overlay_color, mix_amount);
+}