river-raid: Routine at 6682

6682: Render player plane sprite

Used by the routines at play and scroll_screen.
Renders the player's plane at its current position. Only executes in GAMEPLAY_MODE_NORMAL; returns immediately in other modes (scroll-in, overview, refuel). Sets COLLISION_MODE_FUEL_DEPOT so the collision system checks for fuel depot contact during rendering. Backs up missile coordinates to state_plane_missile_y_backup before modifying them for collision detection. Selects between normal sprite (sprite_plane) and banked sprite (sprite_plane_banked) based on state_plane_sprite_bank. Player 2 uses different attributes (same as ship).
render_plane	6682	LD A,($5F68)	Return if not in GAMEPLAY_MODE_NORMAL.
	6685	CP $00
	6687	RET NZ
	6688	LD A,($5F72)	Backup missile coords to state_plane_missile_y_backup; set up plane position (Y=$80, X from state_plane_x).
	668B	LD HL,($5EF3)
	668E	LD ($5F8F),HL
	6691	LD C,A	Set COLLISION_MODE_FUEL_DEPOT and store plane coords.
	6692	LD B,$80
	6694	LD A,$01
	6696	LD ($5EF5),A
	6699	LD ($8B0C),BC
	669D	CALL advance_object	Calculate previous position for sprite erasure.
	66A0	LD ($8B0A),BC	Calculate previous position for sprite erasure.
	66A4	LD BC,$0010	Set frame size and sprite pointer from ptr_plane_sprite.
	66A7	LD HL,($5EF7)
	66AA	LD ($8B0E),HL
	66AD	LD E,$0E	Set attributes; call ld_attributes_ship for Player 2 (uses ship attributes).
	66AF	LD A,($923D)
	66B2	CP $02
	66B4	CALL Z,ld_attributes_ship
	66B7	LD D,$08	Set height, load sprite base; if bank=$04, use sprite_plane_banked.
	66B9	LD HL,$83B1
	66BC	LD A,($5F69)
	66BF	CP $04
	66C1	CALL Z,ld_sprite_plane_banked
	66C4	LD A,$02	Set width and call render_object to render.
	66C6	CALL render_object	Set width and call render_object to render.
	66C9	JP restore_plane_state_after_render	Restore state.