; Tests sprite 0 hit with regard to bottom of screen. .include "prefix_sprite_hit.a" test_name: .db "SPRITE HIT SCREEN BOTTOM",0 .code reset: jsr begin_sprite_hit_tests lda #solid_tile jsr fill_nametable lda #0 sta sprite_attr lda #128 sta sprite_x ; Basic lda #solid_tile sta sprite_tile lda #239 sta sprite_y lda #2;) Should always miss when Y >= 239 ldx #$1e jsr sprite_should_miss lda #238 sta sprite_y lda #3;) Can hit when Y < 239 ldx #$1e jsr sprite_should_hit lda #255 sta sprite_y lda #4;) Should always miss when Y = 255 ldx #$1e jsr sprite_should_miss ; Detailed lda #lower_right_tile sta sprite_tile lda #231 sta sprite_y lda #5;) Should hit; sprite pixel is at 238 ldx #$1e jsr sprite_should_hit lda #232 sta sprite_y lda #6;) Should miss; sprite pixel is at 239 ldx #$1e jsr sprite_should_miss lda #upper_left_tile sta sprite_tile lda #238 sta sprite_y lda #7;) Should hit; sprite pixel is at 238 ldx #$1e jsr sprite_should_hit jmp tests_passed