Shader for lighting, fairy line of view, tileset change, broke lights, sorry

data/shaders.lua

@@ -0,0 +1,31 @@
+myShader = love.graphics.newShader[[
+  uniform vec2 light_pos;
+  uniform vec3 light_color;
+  uniform float range;
+  uniform float game_scale;
+
+  vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords ){
+
+    vec4 pixel = Texel(texture, texture_coords );//This is the current pixel color
+
+    float distance_x = light_pos.x - screen_coords.x;
+    float distance_y = light_pos.y - screen_coords.y;
+    float distance = 1-sqrt( pow(distance_x,2) + pow(distance_y,2) ) / game_scale;
+    if (distance < range){
+      float alpha = (distance/range);
+      if (pixel.a > alpha){
+        pixel.a = alpha;
+      }
+      if (color.r<light_color.r){
+        color.r = light_color.r;
+      }
+      if (color.g<light_color.g){
+        color.g = light_color.g;
+      }
+      if (color.b<light_color.b){
+        color.b = light_color.b;
+      }
+    }
+    return pixel * color;
+  }
+]]