; Tests sprite 0 hit with regard to column 255 (ignored) and off ; right edge of screen. .include "prefix_sprite_hit.a" test_name: .db "SPRITE HIT RIGHT EDGE",0 .code reset: jsr begin_sprite_hit_tests lda #solid_tile jsr fill_nametable lda #0 sta sprite_attr lda #120 sta sprite_y ; Basic lda #solid_tile sta sprite_tile lda #255 sta sprite_x lda #2;) Should always miss when X = 255 ldx #$1e jsr sprite_should_miss lda #254 sta sprite_x lda #3;) Should hit; sprite has pixels < 255 ldx #$1e jsr sprite_should_hit ; Detailed lda #upper_right_tile sta sprite_tile lda #248 sta sprite_x lda #4;) Should miss; sprite pixel is at 255 ldx #$1e jsr sprite_should_miss lda #247 sta sprite_x lda #5;) Should hit; sprite pixel is at 254 ldx #$1e jsr sprite_should_hit lda #upper_left_tile sta sprite_tile lda #254 sta sprite_x lda #6;) Should also hit; sprite pixel is at 254 ldx #$1e jsr sprite_should_hit jmp tests_passed