Implemented block build animation and shaders

core/assets/shaders/inline-blocks.fragment

@@ -0,0 +1,96 @@
+#ifdef GL_ES
+precision mediump float;
+precision mediump int;
+#endif
+
+uniform sampler2D u_texture;
+
+uniform vec4 u_color;
+uniform vec2 u_texsize;
+uniform vec2 u_uv;
+uniform vec2 u_uv2;
+uniform float u_progress;
+uniform float u_time;
+
+varying vec4 v_color;
+varying vec2 v_texCoord;
+
+const float chunk = 4.0;
+const float start = 0.7;
+const float end = 0.9;
+
+float rand(vec2 co){
+    return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
+}
+
+float round(float f){
+    return float(int(f / chunk)) * chunk;
+}
+
+bool id(vec2 coords, vec4 base, float basediff){
+    vec4 target = texture2D(u_texture, coords);
+    return target.a < 0.1 || (coords.x < u_uv.x || coords.y < u_uv.y || coords.x > u_uv2.x || coords.y > u_uv2.y);
+}
+
+bool cont(vec2 T, vec2 v, float basediff){
+    float step = 1.0;
+    vec4 base = texture2D(u_texture, T);
+    return base.a > 0.1 &&
+           		(id(T + vec2(0, step) * v, base, basediff) || id(T + vec2(0, -step) * v, base, basediff) ||
+           		id(T + vec2(step, 0) * v, base, basediff) || id(T + vec2(-step, 0) * v, base, basediff));
+}
+
+bool complete(vec2 coords){
+    vec2 rc = vec2(round(coords.x), round(coords.y));
+    float r = clamp(rand(rc) + u_progress, 0.0, 1.0);
+    float fr = (r-start)*(1.0/(end-start));
+
+    vec2 next = rc + chunk/2.0;
+    float rdst = max(abs(coords.x - next.x), abs(coords.y - next.y));
+    return rdst / (chunk/2.0) < fr;
+}
+
+void main() {
+
+	vec2 t = v_texCoord.xy;
+
+	vec2 v = vec2(1.0/u_texsize.x, 1.0/u_texsize.y);
+
+	bool any = false;
+
+	vec2 coords = (v_texCoord-u_uv) / v;
+
+
+	float value = coords.x + coords.y;
+
+	vec4 color = texture2D(u_texture, t);
+	vec2 rc = vec2(round(coords.x), round(coords.y));
+	vec2 center = ((u_uv + u_uv2)/2.0 - u_uv) /v;
+
+	float r = clamp(rand(rc) + u_progress, 0.0, 1.0);
+
+    const float scl = 10.0;
+	float dst = (abs(center.x - coords.x) + abs(center.y - coords.y)) / 2.0;
+
+    if(dst - 1.0 < u_progress * (center.x) && dst> u_progress * (center.x) && color.a > 0.1){
+        gl_FragColor = u_color;
+    }else if(r > end){
+        gl_FragColor = color;
+    }else if((cont(t, v, 100.0) && mod(u_time / 1.5 + value, 20.0) < 5.0 && color.a > 0.1) ||
+            (complete(coords) && (!complete(coords + vec2(1.0, 0.0)) || !complete(coords + vec2(-1.0, 0.0)) || !complete(coords + vec2(0.0, 1.0))
+            || !complete(coords + vec2(0.0, -1.0))))){
+       gl_FragColor = u_color;
+	}else if(r > start && color.a > 0.1){
+	    float fr = (r-start)*(1.0/(end-start));
+
+	    vec2 next = rc + chunk/2.0;
+	    float rdst = max(abs(coords.x - next.x), abs(coords.y - next.y));
+	    if(rdst / (chunk/2.0) < fr){
+	        gl_FragColor = u_color;
+	    }else{
+	        gl_FragColor = vec4(0.0);
+	    }
+	}else{
+	    gl_FragColor = vec4(0.0);
+	}
+}