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72 lines
1.6 KiB
NASM
72 lines
1.6 KiB
NASM
; Tests sprite 0 hit with regard to clipping of left 8 pixels of screen.
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.include "prefix_sprite_hit.a"
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test_name:
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.db "SPRITE HIT LEFT CLIPPING",0
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.code
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reset:
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jsr begin_sprite_hit_tests
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lda #solid_tile
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jsr fill_nametable
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lda #0
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sta sprite_attr
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ldy #120
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sta sprite_y
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; Basic
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lda #solid_tile
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sta sprite_tile
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lda #0
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sta sprite_x
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lda #2;) Should miss when entirely in left-edge clipping
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ldx #$18
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jsr sprite_should_miss
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lda #3;) Left-edge clipping occurs when $2001 is not $1e
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ldx #$1a
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jsr sprite_should_miss
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lda #3
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ldx #$1c
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jsr sprite_should_miss
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lda #4;) Left-edge clipping is off when $2001 = $1e
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ldx #$1e
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jsr sprite_should_hit
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lda #1
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sta sprite_x
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lda #5;) Left-edge clipping blocks all hits only when X = 0
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ldx #$18
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jsr sprite_should_hit
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; Detailed
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lda #upper_left_tile
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sta sprite_tile
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lda #7
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sta sprite_x
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lda #6;) Should miss; sprite pixel covered by left-edge clip
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ldx #$18
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jsr sprite_should_miss
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lda #8
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sta sprite_x
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lda #7;) Should hit; sprite pixel outside left-edge clip
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ldx #$18
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jsr sprite_should_hit
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lda #upper_right_tile
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sta sprite_tile
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lda #1
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sta sprite_x
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lda #8;) Should hit; sprite pixel outside left-edge clip
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ldx #$18
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jsr sprite_should_hit
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jmp tests_passed
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