254 lines
5.1 KiB
NASM
254 lines
5.1 KiB
NASM
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**************************************************************************
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* *
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* This loop spawns off the individual paper processes *
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* *
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**************************************************************************
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movk 2,a5
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brc2 movi a_big_paper,a9 ; a9 = animation to use
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create pid_bani,garbage_straight
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movi a_lil_paper,a9 ; a9 = animation to use
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create pid_bani,garbage_straight
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movi a_leaf,a9 ; a9 = animation to use
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create pid_bani,garbage_straight
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create pid_bani,garbage_straight
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create pid_bani,garbage_straight ; straight does NOT loop on screen
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movi a_big_paper,a9
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create pid_bani,garbage_loop ; does a Loop-dee-Loop onscreen
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movi a_lil_paper,a9
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create pid_bani,garbage_loop
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dsj a5,brc2
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;**********************************************
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garbage_straight
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callr get_paper_object ; you can write your version of this
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simp4 callr paper_start_position ; compute where to start paper (offscreen)
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callr paper_glide ; random velocities (to look real)
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callr paper_glide ; random velocities (to look real)
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clr a1 ; dx
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clr a2 ; dy
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jsrp paper_fly_offscreen ; wait for piece to go offscreen
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jruc simp4
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garbage_loop
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callr get_paper_object
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ploop1 callr paper_start_position
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callr paper_glide
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*
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* this code makes the piece go Loop-dee-Loop
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*
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movi ->2800,a10 ; dy
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ploop2 movi ->4000,a1 ; dx
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move *a8(oxvel),a0,l
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abs a0
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cmpi >8000,a0
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jrhi ploop3
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movi >5000,a10 ; reached peak ---> head downwards
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ploop3 move a10,a2
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callr paper_loop_sleep
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cmpi ->20000,a1
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jrgt ploop2
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ploop4 movi >3000,a1 ; dx
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movi >3000,a2 ; dy
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callr paper_loop_sleep
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cmpi >30000,a2
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jrlt ploop5
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movi >30000,a2
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ploop5
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cmpi >30000,a1
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jrlt ploop4
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movi >3000,a1 ; dx
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movi ->2000,a2 ; dy
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jsrp paper_fly_offscreen
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jruc ploop1 ; offscreen = start over agin !
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paper_fly_offscreen
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move a1,*a13(p_store1),w
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move a2,*a13(p_store2),w
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pfo4 move *a13(p_store1),a1,w
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move *a13(p_store2),a2,w
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callr paper_loop_sleep
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calla next_anirate
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move @worldtlx1+16,a1,w
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addi scrrgt,a1 ; a1 = right edge
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move *a8(oxpos),a0,w ; a0 = obj position
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cmp a1,a0
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jrlt pfo4 ; on screen = loopy
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retp
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*
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* Input:
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* a1 = x velocity change
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* a2 = y velocity change
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*
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paper_loop_sleep
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move *a8(oyvel),a0,l
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add a2,a0
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move a0,*a8(oyvel),l
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move *a8(oxvel),a0,l
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add a1,a0
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move a0,*a8(oxvel),l
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pull a11 ; return address
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sleep 1
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calla next_anirate
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move *a8(oxvel),a1,l
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move *a8(oyvel),a2,l
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jump a11 ; return
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paper_glide
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pull a11
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movi >20000,a0
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calla srand
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subi >4000,a0 ; nudge things up
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move a0,*a8(oyvel),l
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movi >20,a0
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movi >08,a1
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calla randu_minimum
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move a0,a10
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glid3 sleep 1
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calla next_anirate
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dsj a10,glid3
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jump a11 ; return
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;******************
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get_paper_object
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pull a11
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movi >30,a0
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calla randu
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calla prcslp
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movk 4,a0
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calla init_anirate
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move *a9,a5,l
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; you probably have a routine which
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; does the equivalent of this !
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calla gso_dmawnz ; get object with write non-zero bit set
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movi baklst4,b4
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move a8,a0
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calla insobj_v ; insert on baklst 4 !!
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jump a11
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*
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* Start position = just off the left side of the screen (flies to the right)
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*
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paper_start_position
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movi >0000fff0,a4
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movi >40,a0 ; this range !!
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movi >80,a1 ; at least this low on the screen
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calla randu_minimum ; a1 = randomness #
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sll 16,a0 ; random starting y position
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addxy a0,a4
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callr a4_to_world_coor ; and rets
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movi >40000,a0
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movi >40000,a1
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calla randu_minimum
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move a0,*a8(oxvel),l ; random starting vel
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rets
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*
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* Convert A4 (screen coordinates) to world coordinates
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*
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a4_to_world_coor
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move @worldtlx1+16,a0,w
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move @worldtly+16,a1,w
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sll 16,a1
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or a0,a1
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addxy a1,a4 ; a4 = coordinate for obj
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calla set_xy_coordinates
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rets
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;*****************************************************************
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*
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* Garbage/Paper animations
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*
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a_paper1 .long PAPER1
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.long PAPER2
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.long PAPER3
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.long PAPER4
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.long PAPER5
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.long PAPER6
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.long PAPER7
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.long PAPER8
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.long PAPER9
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.long 0
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a_big_paper
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.long LGSHEET1
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.long LGSHEET2
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.long LGSHEET3
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.long LGSHEET4
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.long LGSHEET5
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.long LGSHEET6
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.long LGSHEET7
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.long LGSHEET8
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.long LGSHEET9
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.long ani_jump,a_big_paper
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a_lil_paper
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.long SMSHEET1
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.long SMSHEET2
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.long SMSHEET3
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.long SMSHEET4
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.long SMSHEET5
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.long SMSHEET6
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.long SMSHEET7
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.long SMSHEET8
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.long SMSHEET9
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.long ani_jump,a_lil_paper
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a_leaf .long LEAF1
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.long LEAF2
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.long LEAF3
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.long LEAF4
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.long LEAF5
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.long LEAF6
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.long LEAF7
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.long LEAF8
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.long ani_jump,a_leaf
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*
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* LOD file for paper/garbage images
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*
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C:\VIDEO\KOMBAT3\IMG\MKBGANI2.IMG
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---> PAPER1,LGSHEET1,SMSHEET1,LEAF1,SKTORCH1
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POF>
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---> PAPER2,PAPER3,PAPER4,PAPER5,PAPER6,PAPER7,PAPER8,PAPER9
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---> LGSHEET2,LGSHEET3,LGSHEET4,LGSHEET5,LGSHEET6,LGSHEET7
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---> LGSHEET8,LGSHEET9,SMSHEET2,SMSHEET3,SMSHEET4,SMSHEET5
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---> SMSHEET6,SMSHEET7,SMSHEET8,SMSHEET9,LEAF2,LEAF3,LEAF4,LEAF5
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---> LEAF6,LEAF7,LEAF8
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