Routines
Prev: 6B58 Up: Map Next: 6B63
6B5E: Calculate offset right edge (terrain extras mode 2)
For fixed-width river sections. Right edge = C + D where C is the river width and D is the left edge coordinate. This maintains constant river width regardless of left edge position.
Input
C River width (from state_terrain_element_23 low byte).
D Left terrain edge coordinate.
Output
A Right terrain edge coordinate = C + D.
calc_terrain_right_offset 6B5E LD A,C A = C + D (fixed width from left), jump to draw_terrain_right_edge.
6B5F ADD A,D
6B60 JP draw_terrain_right_edge
Prev: 6B58 Up: Map Next: 6B63