Started on platforms. Updated player movement.

res/shaders/s2e/frag.gls

@@ -0,0 +1,13 @@
+#version 330 core
+
+uniform sampler2D sampler;
+
+in vec2 texCoords;
+
+out vec4 color;
+
+void main() {
+    color = texture(sampler, texCoords);
+	if (color.a == 0)
+	    discard;
+}

res/shaders/s2e/vert.gls

@@ -0,0 +1,14 @@
+#version 330 core
+
+uniform vec4 subtexture = vec4(0, 0, 1, 1);
+uniform mat4 mvp;
+
+layout (location = 0) in vec3 vertices;
+layout (location = 1) in vec2 itexCoords;
+
+out vec2 texCoords;
+
+void main() {
+	texCoords = itexCoords * subtexture.zw + subtexture.xy;
+	gl_Position = mvp * vec4(vertices, 1);
+}