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frog_maze.tlv
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\m4_TLV_version 1d: tl-x.org
\SV
m4_include_lib(['https://raw.githubusercontent.com/stevehoover/tlv_lib/db48b4c22c4846c900b3fa307e87d9744424d916/fundamentals_lib.tlv'])
m4_makerchip_module // (Expanded in Nav-TLV pane.)
/* verilator lint_on WIDTH */
\TLV frog_maze(/_top, _where)
/_top
|pipe
@1
$reset = *reset;
m4_define(['M4_MAZE_NAME'], ['dev']) // original, dev
m4+ifelse(M4_MAZE_NAME, ['original'],
\TLV
m4_define_hier(M4_YY, 24, 0)
m4_define_hier(M4_XX, 38, 0)
m4_define(M4_FROG_START_XX, 1)
m4_define(M4_FROG_START_YY, M4_YY_MAX-2)
\SV_plus
logic [M4_YY_RANGE][M4_XX_RANGE] maze;
assign maze = '{
38'b11111111111111111111111111111111111111,
38'b10010010000110001000000000100100000000,
38'b10001000000000000000000000000001100000,
38'b10000000010000000011001000001000000101,
38'b10000000000001100110000100000000000001,
38'b11001000010010000000000000000001000001,
38'b10001100000001000000000110011011010011,
38'b10000010000001000001100100000000000001,
38'b10001001001010011001100000000001000001,
38'b10000000000000000000000001001000100101,
38'b10010001000000000000001001001100000001,
38'b10000000010010010000000000000000000011,
38'b10000000000000000100100000000100100001,
38'b10010100100000000000010010100000010001,
38'b10000000100101001000000000000000000001,
38'b10000100000000000110010000000000010001,
38'b10001100000001000000001010010011000001,
38'b10001000100110100100000000001001000001,
38'b11000001000000000001000100000000001001,
38'b10000000000000000011000000100000000001,
38'b10011000001100110000001000110000000001,
38'b10000000000000000000000000000000001001,
38'b10000000110000010010000000001010100011,
38'b11111111111111111111111111111111111111
};
,
\TLV
// Default small maze for development.
m4_define_hier(M4_YY, 11, 0)
m4_define_hier(M4_XX, 10, 0)
m4_define(M4_FROG_START_XX, 1)
m4_define(M4_FROG_START_YY, M4_YY_MAX-2)
\SV_plus
logic [M4_YY_RANGE][M4_XX_RANGE] maze;
assign maze = '{
10'b1111111111,
10'b1000000101,
10'b1000000001,
10'b1000000000,
10'b1100110000,
10'b1000010001,
10'b1000000011,
10'b1000000001,
10'b1000000001,
10'b1000000001,
10'b1111111111
};
)
m4_define(M4_UP, 2'b00)
m4_define(M4_DOWN, 2'b10)
m4_define(M4_LEFT, 2'b11)
m4_define(M4_RIGHT, 2'b01)
// 1 while solving until the frog location knows where to go.
$solved = /yy[/frog$Yy]/xx[/frog$Xx]$Solved;
/M4_YY_HIER
/M4_XX_HIER
$wall = *maze\[M4_YY_MAX - #yy\]\[M4_XX_MAX - #xx\];
// Can the upper-left corner of the frog be at these coordinates?
$FrogOk <= (! $wall) &&
( ! (/yy/xx[(#xx + 1) % M4_XX_CNT]$wall)) &&
( ! (/yy[(#yy + 1) % M4_YY_CNT]/xx$wall)) &&
( ! (/yy[(#yy + 1) % M4_YY_CNT]/xx[(#xx + 1) % M4_XX_CNT]$wall));
// $Solved: 1 once it is known how to get the frog to the exit from this location.
// $Dir: directiton to solve from this space if solved. Otherwise, 00, or 11 for exit location.
$Solved <= $next_solved;
$Dir[1:0] <= $next_dir;
{$next_solved, $next_dir[1:0]} =
// On reset, we have a solution for all FrogOk positions (presumably one) that are at the edge.
|pipe$reset ? ($FrogOk && (#xx == 0 || #yy == 0 || #xx >= M4_XX_MAX-1 || #yy >= M4_YY_MAX-1) ? {1'b1, #xx == 0 ? 2'b11 : #yy == 0 ? 2'b00 : #xx >= M4_XX_MAX-1 ? 2'b01 : 2'b10} : {1'b0, 2'b00}
) :
! $FrogOk ? {1'b0, 2'b00} :
$Solved ? {1'b1, $Dir} :
// solve by going left?
(/yy/xx[(#xx + M4_XX_CNT - 2) % M4_XX_CNT]$Solved ||
(! /yy/xx[(#xx + M4_XX_CNT - 2) % M4_XX_CNT]$FrogOk && /yy/xx[(#xx + M4_XX_CNT - 1) % M4_XX_CNT]$Solved)
) ? {1'b1, M4_LEFT} :
// solve by going right?
(/yy/xx[(#xx + 2) % M4_XX_CNT]$Solved ||
(! /yy/xx[(#xx + 2) % M4_XX_CNT]$FrogOk && /yy/xx[(#xx + 1) % M4_XX_CNT]$Solved)
) ? {1'b1, M4_RIGHT} :
// solve by going up?
(/yy[(#yy + M4_YY_CNT - 2) % M4_YY_CNT]/xx$Solved ||
(! /yy[(#yy + M4_YY_CNT - 2) % M4_YY_CNT]/xx$FrogOk && /yy[(#yy + M4_YY_CNT - 1) % M4_YY_CNT]/xx$Solved)
) ? {1'b1, M4_UP} :
// solve by going down?
(/yy[(#yy + 2) % M4_YY_CNT]/xx$Solved ||
(! /yy[(#yy + 2) % M4_YY_CNT]/xx$FrogOk && /yy[(#yy + 1) % M4_YY_CNT]/xx$Solved)
) ? {1'b1, M4_DOWN} :
{1'b0, 2'b00};
/frog
$reset = |pipe$reset;
// Make one hop per cycle in the following direction.
$dir[1:0] = |pipe/yy[$Yy]/xx[$Xx]$Dir;
// Determine the +1 and +2 position of the frog based on $dir.
$hop1_x[M4_XX_INDEX_RANGE] =
$dir == M4_RIGHT ? $Xx + 1 :
$dir == M4_LEFT ? $Xx - 1 :
$Xx;
$hop1_y[M4_YY_INDEX_RANGE] =
$dir == M4_DOWN ? $Yy + 1 :
$dir == M4_UP ? $Yy - 1 :
$Yy;
$hop2_x[M4_XX_INDEX_RANGE] =
$dir == M4_RIGHT ? $Xx + 2 :
$dir == M4_LEFT ? $Xx - 2 :
$Xx;
$hop2_y[M4_YY_INDEX_RANGE] =
$dir == M4_DOWN ? $Yy + 2 :
$dir == M4_UP ? $Yy - 2 :
$Yy;
// Hop by 0, 1 or 2.
$hop1_ok = |pipe/yy[$hop1_y]/xx[$hop1_x]$FrogOk;
$hop2_ok = |pipe/yy[$hop2_y]/xx[$hop2_x]$FrogOk;
$Xx[M4_XX_INDEX_RANGE] <=
$reset || ! |pipe$solved ? M4_FROG_START_XX :
$hop2_ok ? $hop2_x :
$hop1_ok ? $hop1_x :
$RETAIN;
$Yy[M4_YY_INDEX_RANGE] <=
$reset || ! |pipe$solved ? M4_FROG_START_YY :
$hop2_ok ? $hop2_y :
$hop1_ok ? $hop1_y :
$RETAIN;
// Assert these to end simulation (before Makerchip cycle limit).
|pipe
@1
/frog
$done = ($Xx == 0 || $Yy == 0 || $Xx >= M4_XX_MAX-1 || $Yy >= M4_YY_MAX-1);
// Visualization
\viz_js
box: {strokeWidth: 0},
where: {_where}
|pipe
@1
\viz_js
strokeWidth: 0,
// Board background
template() {
//debugger
let objects = {}
let TILE_SIZE = 2
for (let x = 0; x < M4_XX_HIGH; x = x + TILE_SIZE) {
for (let y = 0; y < M4_YY_HIGH; y = y + TILE_SIZE) {
objects[`b_${x}_${y}`] = ["Rect",
{left: x * 10,
top: y * 10,
width: (x + TILE_SIZE > M4_XX_HIGH ? M4_XX_HIGH - x : TILE_SIZE) * 10,
height: (y + TILE_SIZE > M4_YY_HIGH ? M4_YY_HIGH - y : TILE_SIZE) * 10,
fill: (((x + y) % (TILE_SIZE * 2)) == 0) ? "#102020" : "#1C2C2C",
strokeWidth: 0,
}
]
}
}
return objects
}
/M4_YY_HIER
\viz_js
box: {height: 10, strokeWidth: 0},
layout: {top: 10}
/M4_XX_HIER
\viz_js
layout: {left: 10},
box: {
width: 10, height: 10,
fill: "#A030A0",
strokeWidth: 0,
visible: false,
}, // (TODO: arrowhead is outside the box, which is bad form.)
template: {
arrowhead: ["Triangle",
{left: 10, top: 10,
width: 6, height: 6,
originX: "center", originY: "center",
fill: "gray",
visible: false,
}
]
},
render() {
this.getBox().set({visible: '$wall'.asBool()})
this.getObjects().arrowhead.set({visible: '$Solved'.asBool() && ! '|pipe$solved'.asBool(),
angle: '$Dir'.asInt() * 90})
}
/frog
\viz_js
box: {width: 10 * M4_XX_HIGH, height: 10 * M4_YY_HIGH, strokeWidth: 0},
init() {
//debugger
let frog_circle = new fabric.Circle(
{originX: "center", originY: "center",
radius: 10,
fill: "#ffffff10"
}
)
frog_image = this.newImageFromURL(
"https://raw.githubusercontent.com/stevehoover/makerchip_examples/master/viz_imgs/frog.png",
"",
{originX: "center", originY: "center",
left: 0, top: 0,
scaleX: 0.03, scaleY: 0.03,
angle: -7,
}
)
let frog = new fabric.Group([frog_circle, frog_image],
{originX: "center", originY: "center",
angle: 0,
width: 20, height: 20,
})
return {frog}
},
render() {
//debugger
// Keep count of the number of renders so we can terminate an animation after another is started.
this.render_cnt = this.render_cnt ? this.render_cnt++ : 1
render_cnt = this.render_cnt
// Determine old and new angles and adjust to make sure frog rotates no more than 180.
let old_angle = this.getInitObjects().frog.angle
let new_angle = '>>1$dir'.asInt() * 90
if (old_angle == 0 && new_angle == 270) {
old_angle = 360
} else if (old_angle == 270 && new_angle == 0) {
old_angle = -90
}
this.getInitObjects().frog.set({angle: old_angle})
// Animate
this.getInitObjects().frog
.animate({angle: new_angle})
.thenAnimate({left: ('$Xx'.asInt() + 1) * 10, top: ('$Yy'.asInt() + 1) * 10},
{duration: '>>1$hop2_ok'.asBool() ? 400 : '>>1$hop1_ok'.asBool() ? 200 : 0})
}
\TLV
m4+frog_maze(/maze)
*passed = *cyc_cnt > 10 && /maze|pipe/frog>>2$done;
*failed = 1'b0;
\SV
endmodule