SpriteTestTools/ssTest.html at main · Mjons/SpriteTestTools · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Side Scroller Tester (7x5)</title>
    <style>
        body {
            margin: 0;
            background-color: #1a1a1a;
            color: white;
            font-family: 'Segoe UI', sans-serif;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
        }

        /* UI Overlay */
        .controls-panel {
            position: absolute;
            top: 20px;
            left: 20px;
            background: rgba(0, 0, 0, 0.8);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #444;
            box-shadow: 0 4px 10px rgba(0,0,0,0.5);
        }

        h1 { margin: 0 0 10px 0; font-size: 18px; color: #ff0055; }
        .key-row { display: flex; justify-content: space-between; margin-bottom: 5px; font-size: 13px; color: #ccc; }
        .key { font-weight: bold; color: #fff; background: #333; padding: 2px 6px; border-radius: 4px; }

        canvas {
            border-bottom: 4px solid #444; /* The floor visual */
            background: linear-gradient(to bottom, #202020, #111);
            box-shadow: 0 0 30px rgba(0,0,0,0.5);
            image-rendering: pixelated;
        }

        .upload-btn {
            margin-top: 10px;
            display: block;
            width: 100%;
        }
    </style>
</head>
<body>

    <div class="controls-panel">
        <h1>Side Scroller Tester</h1>
        <div class="key-row"><span>Move</span> <span class="key">A / D</span></div>
        <div class="key-row"><span>Jump</span> <span class="key">Space</span></div>
        <div class="key-row"><span>Run</span> <span class="key">Shift</span></div>
        <div style="border-top:1px solid #444; margin:10px 0;"></div>
        <div class="key-row"><span>Attack A</span> <span class="key">J</span></div>
        <div class="key-row"><span>Attack B</span> <span class="key">K</span></div>
        <div class="key-row"><span>Taunt</span> <span class="key">L</span></div>
        <div class="key-row"><span>Hurt</span> <span class="key">H</span></div>

        <input type="file" id="upload" class="upload-btn" accept="image/*">
    </div>

    <canvas id="canvas"></canvas>

    <script>
        const canvas = document.getElementById('canvas');
        const ctx = canvas.getContext('2d');

        // --- CONFIG ---
        // 7 Rows x 5 Columns
        const COLS = 5;
        const ROWS = 7;

        // Row Mapping based on your request
        const ANIM = {
            IDLE: 0,
            WALK: 1,
            RUN: 2,
            ATTACK_A: 3,
            ATTACK_B: 4,
            TAUNT: 5,
            HURT: 6
        };

        // Physics Config
        const GRAVITY = 0.8;
        const WALK_SPEED = 4;
        const RUN_SPEED = 8;
        const JUMP_FORCE = 15;
        const GROUND_Y = 400; // Where the floor is

        // --- STATE ---
        let spriteSheet = new Image();
        let isLoaded = false;

        let player = {
            x: 200,
            y: GROUND_Y,
            vx: 0,
            vy: 0,
            facingRight: true,
            state: ANIM.IDLE,
            frame: 0,
            frameTimer: 0,
            isGrounded: true,
            isLocked: false // Locks movement during attacks
        };

        // Frame Dimensions (Calculated on load)
        let fw = 64;
        let fh = 64;

        // Input
        const keys = {
            left: false, right: false, run: false, jump: false
        };

        // --- INIT ---
        function resize() {
            canvas.width = window.innerWidth - 100;
            canvas.height = window.innerHeight - 100;
            GROUND_Y_ACTUAL = canvas.height - 100;
            player.y = GROUND_Y_ACTUAL;
            ctx.imageSmoothingEnabled = false;
        }
        window.addEventListener('resize', resize);
        resize();

        document.getElementById('upload').addEventListener('change', (e) => {
            const f = e.target.files[0];
            if(!f) return;
            const reader = new FileReader();
            reader.onload = (evt) => {
                spriteSheet = new Image();
                spriteSheet.onload = () => {
                    isLoaded = true;
                    // Auto-Calculate Grid
                    fw = Math.floor(spriteSheet.width / COLS);
                    fh = Math.floor(spriteSheet.height / ROWS);
                };
                spriteSheet.src = evt.target.result;
            };
            reader.readAsDataURL(f);
        });

        // Input Listeners
        window.addEventListener('keydown', e => {
            const k = e.key.toLowerCase();
            if(k === 'a' || k === 'arrowleft') keys.left = true;
            if(k === 'd' || k === 'arrowright') keys.right = true;
            if(k === 'shift') keys.run = true;
            if(k === ' ' || k === 'arrowup') jump();

            // Actions
            if(k === 'j') playAction(ANIM.ATTACK_A);
            if(k === 'k') playAction(ANIM.ATTACK_B);
            if(k === 'l') playAction(ANIM.TAUNT);
            if(k === 'h') playAction(ANIM.HURT);
        });

        window.addEventListener('keyup', e => {
            const k = e.key.toLowerCase();
            if(k === 'a' || k === 'arrowleft') keys.left = false;
            if(k === 'd' || k === 'arrowright') keys.right = false;
            if(k === 'shift') keys.run = false;
        });

        // --- LOGIC ---

        function jump() {
            if(player.isGrounded && !player.isLocked) {
                player.vy = -JUMP_FORCE;
                player.isGrounded = false;
            }
        }

        function playAction(animRow) {
            // interrupt current action? yes.
            player.state = animRow;
            player.frame = 0;
            player.isLocked = true; // Can't move while attacking
        }

        function update() {
            // 1. Physics
            if(!player.isLocked) {
                let speed = keys.run ? RUN_SPEED : WALK_SPEED;

                if(keys.left) {
                    player.vx = -speed;
                    player.facingRight = false;
                } else if(keys.right) {
                    player.vx = speed;
                    player.facingRight = true;
                } else {
                    player.vx = 0;
                }
            } else {
                // Friction if locked (attacking)
                player.vx *= 0.8;
            }

            // Apply Velocity
            player.x += player.vx;
            player.y += player.vy;
            player.vy += GRAVITY;

            // Ground Collision
            // We use GROUND_Y_ACTUAL defined in resize
            const floor = canvas.height - 100;
            if(player.y >= floor) {
                player.y = floor;
                player.vy = 0;
                player.isGrounded = true;
            } else {
                player.isGrounded = false;
            }

            // 2. State Machine (Animation Switching)
            // Only change state if we aren't locked in an animation (like attacking)
            if(!player.isLocked) {
                if(!player.isGrounded) {
                    // Optional: You could add a "Jump" row here if you had one
                    // For now, we use Run frame for jumping
                    player.state = ANIM.RUN;
                }
                else if(Math.abs(player.vx) > 0.1) {
                    player.state = keys.run ? ANIM.RUN : ANIM.WALK;
                }
                else {
                    player.state = ANIM.IDLE;
                }
            }

            // 3. Animation Frame Cycle
            player.frameTimer++;
            let frameDelay = 8; // Standard speed
            if(player.state === ANIM.RUN) frameDelay = 5; // Run faster

            if(player.frameTimer > frameDelay) {
                player.frame++;

                // Loop Logic
                if(player.frame >= COLS) {
                    if(player.isLocked) {
                        // If action finished, return to idle and unlock
                        player.isLocked = false;
                        player.state = ANIM.IDLE;
                        player.frame = 0;
                    } else {
                        // Loop normally
                        player.frame = 0;
                    }
                }
                player.frameTimer = 0;
            }
        }

        // --- DRAW ---
        function draw() {
            // Background
            ctx.clearRect(0, 0, canvas.width, canvas.height);

            // Draw Floor Line
            ctx.beginPath();
            ctx.moveTo(0, canvas.height - 100 + fh); // Draw slightly below feet
            ctx.lineTo(canvas.width, canvas.height - 100 + fh);
            ctx.strokeStyle = "#444";
            ctx.lineWidth = 4;
            ctx.stroke();

            // Draw Text instructions if not loaded
            if(!isLoaded) {
                ctx.fillStyle = "white";
                ctx.font = "20px sans-serif";
                ctx.textAlign = "center";
                ctx.fillText("Upload your 7x5 Sprite Sheet", canvas.width/2, canvas.height/2 - 20);
                return;
            }

            // SPRITE DRAWING
            ctx.save();

            // Position the context at player's feet
            let drawX = player.x;
            let drawY = player.y;

            // Translate to pivot point (bottom center of sprite)
            ctx.translate(drawX, drawY);

            // Scale Size
            const scale = 3;

            // FLIP LOGIC
            if(!player.facingRight) {
                ctx.scale(-1, 1); // Mirror horizontally
            }

            // Draw Image
            // Source X/Y
            let sx = player.frame * fw;
            let sy = player.state * fh;

            // Draw centered on the pivot
            // We draw at -width/2 and -height so the pivot is at bottom center
            ctx.drawImage(
                spriteSheet,
                sx, sy, fw, fh,       // Source
                -(fw*scale)/2, -(fh*scale), fw*scale, fh*scale // Dest
            );

            // Debug Box (optional, to see pivot)
            // ctx.fillStyle = "red";
            // ctx.fillRect(-2, -2, 4, 4);

            ctx.restore();
        }

        // Loop
        function loop() {
            update();
            draw();
            requestAnimationFrame(loop);
        }
        loop();

    </script>
</body>
</html>