+ float LEFTEND = SCREEN_WIDTH * config.edge_x;
+ float RIGHTEND = SCREEN_WIDTH * (1 - config.edge_x);
+
+ if (player_delta.x < -EPSILON) {
+ // walking left
+ lookahead_pos -= player_delta.x * config.dynamic_speed_sm;
+
+ if(lookahead_pos > RIGHTEND) {
+ lookahead_pos = RIGHTEND;
+ }
+ } else if (player_delta.x > EPSILON) {
+ // walking right
+ lookahead_pos -= player_delta.x * config.dynamic_speed_sm;
+ if(lookahead_pos < LEFTEND) {
+ lookahead_pos = LEFTEND;
+ }
+ }
+
+ // adjust for level ends
+ if (player_pos.x < LEFTEND) {
+ lookahead_pos = LEFTEND;
+ }
+ if (player_pos.x > sector->get_width() - LEFTEND) {
+ lookahead_pos = RIGHTEND;
+ }
+
+ translation.x = player_pos.x - lookahead_pos;