From c3b0fa04a663fe233765b83d3be41a42aa08c25d Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Mon, 3 May 2021 08:21:10 +0100
Subject: Initial import for public release

---
 lib/cpcrslib/cpc_CollSp.s | 126 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 lib/cpcrslib/cpc_CollSp.s

(limited to 'lib/cpcrslib/cpc_CollSp.s')

diff --git a/lib/cpcrslib/cpc_CollSp.s b/lib/cpcrslib/cpc_CollSp.s
new file mode 100644
index 0000000..08bd02a
--- /dev/null
+++ b/lib/cpcrslib/cpc_CollSp.s
@@ -0,0 +1,126 @@
+.globl _cpc_CollSp
+	
+_cpc_CollSp::
+;first parameter sprite 
+;second parameter value
+	ld hl,#2
+	add hl,sp
+	
+	;ld ix,#2
+	;add ix,sp
+;	ld e,2 (ix)
+;	ld d,3 (ix)
+	;A=x value
+;	ld l,0 (ix)
+;	ld h,1 (ix)
+	
+	ld e,(hl)
+	inc hl
+	ld d,(hl)
+	push de
+	inc hl
+	ld e,(hl)
+	inc hl
+	ld d,(hl)
+	push de
+	
+	pop iy	;ix sprite2 data
+  
+    pop ix	;iy sprite1 data
+    
+    ;Sprite coords & sprite dims
+				
+;COLISION_sprites
+
+
+
+;entran sprite1 y sprite 2 y se actualizan los datos
+;ix apunta a sprite1
+;iy apunta a sprite2
+
+;coordenadas
+	ld l,8 (ix)
+	ld h,9 (ix)
+	LD (#SPR2X),HL
+	
+	ld l,8 (iy)
+	ld h,9 (iy)
+	LD (#SPR1X),HL	
+
+;dimensiones sprite 1
+	ld l,0 (ix)
+	ld h,1 (ix)
+	ld b,(hl)
+	inc hl
+	ld c,(hl)
+;dimensiones sprite 12
+	ld l,0 (iy)
+	ld h,1 (iy)
+	ld d,(hl)
+	inc hl
+	ld e,(hl)	
+	
+	
+	;ld e,(ix+6)
+	;ld d,(ix+7)	
+	
+	
+
+;ld de,DIMENSIONES_SP_PPAL	;dimensiones sprite 2
+;ld bc,DIMENSIONES_SP_PPAL	;dimensiones sprite 1
+CALL TOCADO
+;RET NC ;vuelve si no hay colision
+ld h,#0
+JP nc,no_colision
+;Aquí hay colisión
+ld l,#1
+RET		
+
+no_colision:
+ld l,h
+ret
+	
+TOCADO:
+	LD HL,#SPR2X	
+	LD A,(#SPR1X)
+	CP (HL)
+	jp C,C1
+	LD A,(HL)
+	ADD A,B	;alto del sprite1
+	LD B,A
+	LD A,(#SPR1X)
+	SUB B
+	RET NC
+	jp COMPROBAR
+C1:
+	ADD A,D	;alto sprite2
+	LD D,A
+	LD A,(HL)
+	SUB D
+	RET NC
+COMPROBAR:
+	INC HL
+	LD A,(#SPR1Y)
+	CP (HL)
+	jp C,C2
+	LD A,(HL)
+	ADD A,C
+	LD C,A
+	LD A,(#SPR1Y)
+	SUB C
+	RET
+C2:
+	ADD A,E
+	LD E,A
+	LD A,(HL)
+	SUB E
+	RET
+
+SPR1X: 
+.db 0
+SPR1Y: 
+.db 0
+SPR2X: 
+.db 0
+SPR2Y: 
+.db 0
-- 
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