mirror of https://github.com/nmlgc/ReC98.git
190 lines
4.1 KiB
NASM
190 lines
4.1 KiB
NASM
.386
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locals
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include libs/master.lib/master.inc
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include th03/arg_bx.inc
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include th02/main/playfld.inc
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include th04/math/motion.inc
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include th04/hardware/input.inc
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include th04/main/player/player.inc
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VECTOR2_AT procdesc pascal far \
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ret:ptr Point, origin_x:word, origin_y:word, length:word, angle:byte
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MAIN_01 group MAIN_0_TEXT, MAIN_01_TEXT
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MAIN_0_TEXT segment byte public 'CODE' use16
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TILES_INVALIDATE_AROUND procdesc pascal near \
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center:Point
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MAIN_0_TEXT ends
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extrn _tile_invalidate_box:Point
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extrn _miss_time:byte
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extrn _miss_explosion_angle:byte
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extrn _miss_explosion_radius:word
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extrn _drawpoint:Point
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extrn _player_option_pos_prev:Point
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extrn _player_pos:motion_t
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extrn _playchar_speed_aligned:word
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extrn _playchar_speed_diagonal:word
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; ----------------------------------------------------------------------------
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MAIN_01_TEXT segment word public 'CODE' use16
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assume cs:MAIN_01
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; void pascal near player_invalidate(void);
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public PLAYER_INVALIDATE
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PLAYER_INVALIDATE proc pascal near
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mov _tile_invalidate_box.y, PLAYER_H
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cmp _miss_time, 0
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jz short @@alive
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push di
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mov _tile_invalidate_box.x, MISS_EXPLOSION_W
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mov di, _miss_explosion_radius
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; Go back a frame
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add di, -MISS_EXPLOSION_RADIUS_VELOCITY
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mov al, _miss_explosion_angle
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add al, -MISS_EXPLOSION_ANGLE_VELOCITY
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mov ah, MISS_EXPLOSION_COUNT
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@@loop:
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cmp ah, MISS_EXPLOSION_COUNT / 2
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jnz short @@invalidate
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shr di, 1
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neg al
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@@invalidate:
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push ax
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call VECTOR2_AT pascal, offset _drawpoint, _player_pos.cur.x, _player_pos.cur.y, di, ax
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MISS_EXPLOSION_CLIP @@next
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call TILES_INVALIDATE_AROUND pascal, large [_drawpoint]
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@@next:
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pop ax
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add al, 256 / (MISS_EXPLOSION_COUNT / 2)
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dec ah
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jnz short @@loop
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pop di
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jmp short @@ret
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; ---------------------------------------------------------------------------
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@@alive:
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mov _tile_invalidate_box.x, PLAYER_W
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call TILES_INVALIDATE_AROUND pascal, large [_player_pos.prev]
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mov _tile_invalidate_box.x, PLAYER_OPTION_W + PLAYER_W + PLAYER_OPTION_W
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mov _tile_invalidate_box.y, PLAYER_OPTION_H
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call TILES_INVALIDATE_AROUND pascal, large [_player_option_pos_prev]
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@@ret:
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retn
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PLAYER_INVALIDATE endp
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even
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; move_ret_t pascal near player_move(int input);
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public PLAYER_MOVE
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PLAYER_MOVE proc near
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arg_bx near, @input:word
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@@diagonal_x equ ax
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@@diagonal_y equ cx
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@@aligned equ dx
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mov bx, @input
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cmp bl, INPUT_RIGHT or INPUT_DOWN
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ja short @@invalid
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mov @@diagonal_y, _playchar_speed_diagonal
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mov @@diagonal_x, @@diagonal_y
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mov @@aligned, _playchar_speed_aligned
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and bh, low INPUT_MOVEMENT
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jz short @@switch
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or bl, bl
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jnz short @@invalid
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shr bx, 8
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cmp bl, 8
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ja short @@invalid
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add bl, 11
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@@switch:
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add bx, bx
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jmp word ptr cs:@@switch_table[bx]
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@@up:
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neg @@aligned
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@@down:
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mov _player_pos.velocity.y, @@aligned
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jmp short @@moved
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; ---------------------------------------------------------------------------
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@@left:
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neg @@aligned
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@@right:
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mov _player_pos.velocity.x, @@aligned
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jmp short @@moved
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; ---------------------------------------------------------------------------
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@@up_right:
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neg @@diagonal_y
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jmp short @@down_right
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; ---------------------------------------------------------------------------
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@@up_left:
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neg @@diagonal_y
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@@down_left:
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neg @@diagonal_x
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@@down_right:
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mov _player_pos.velocity.x, @@diagonal_x
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mov _player_pos.velocity.y, @@diagonal_y
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jmp short @@moved
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; ---------------------------------------------------------------------------
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@@standing_still:
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mov al, MOVE_NOINPUT
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jmp short @@ret
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; ---------------------------------------------------------------------------
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@@invalid:
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xor al, al
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jmp short @@ret
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; ---------------------------------------------------------------------------
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@@moved:
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mov al, MOVE_VALID
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@@ret:
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ret_bx
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; ---------------------------------------------------------------------------
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@@switch_table label word
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dw @@standing_still
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dw @@up
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dw @@down
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dw @@invalid
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dw @@left
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dw @@up_left
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dw @@down_left
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dw @@invalid
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dw @@right
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dw @@up_right
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dw @@down_right
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dw @@invalid
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dw @@up_left
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dw @@up_right
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dw @@invalid
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dw @@down_left
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dw @@invalid
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dw @@invalid
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dw @@invalid
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dw @@down_right
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PLAYER_MOVE endp
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MAIN_01_TEXT ends
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end
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