soul-symphony-ling

# render_optimized.ling — Optimized Rendering Utilities
#
# Uses new Ling rendering features:
# - draw_quad_3d() for quads (replaces 2 triangles)
# - (BSDF materials removed — flat unlit rendering)
# - Toon post-processing (shadow_smooth, toon_outlines, toon_highlight)
# - Shared edge deduplication (automatic)

# ═══════════════════════════════════════════════════════════════════════════════
# QUAD HELPERS
# ═══════════════════════════════════════════════════════════════════════════════

# Draw a quad face (replaces 2 triangles)
ฟังก์ชัน drawQuad(x0,y0,z0, x1,y1,z1, x2,y2,z2, x3,y3,z3) {
    draw_quad_3d(x0,y0,z0, x1,y1,z1, x2,y2,z2, x3,y3,z3)
    คืน 0
}

# Draw a box using 6 quads (replaces 12 triangles)
ฟังก์ชัน drawBoxQuads(x0,y0,z0, x1,y1,z1) {
    # Front face (z0)
    draw_quad_3d(x0,y0,z0, x1,y0,z0, x1,y1,z0, x0,y1,z0)
    # Back face (z1)
    draw_quad_3d(x1,y0,z1, x0,y0,z1, x0,y1,z1, x1,y1,z1)
    # Left face (x0)
    draw_quad_3d(x0,y0,z1, x0,y0,z0, x0,y1,z0, x0,y1,z1)
    # Right face (x1)
    draw_quad_3d(x1,y0,z0, x1,y0,z1, x1,y1,z1, x1,y1,z0)
    # Top face (y1)
    draw_quad_3d(x0,y1,z0, x1,y1,z0, x1,y1,z1, x0,y1,z1)
    # Bottom face (y0)
    draw_quad_3d(x0,y0,z1, x1,y0,z1, x1,y0,z0, x0,y0,z0)
    คืน 0
}

# Draw a wall quad (common in level geometry)
ฟังก์ชัน drawWallQuad(x0,z0, x1,z1, y0,y1) {
    draw_quad_3d(x0,y0,z0, x1,y0,z1, x1,y1,z1, x0,y1,z0)
    คืน 0
}

# Draw a floor/ceiling quad
ฟังก์ชัน drawFloorQuad(x0,z0, x1,z1, y) {
    draw_quad_3d(x0,y,z0, x1,y,z0, x1,y,z1, x0,y,z1)
    คืน 0
}

# ═══════════════════════════════════════════════════════════════════════════════
# MATERIAL PRESETS
# ═══════════════════════════════════════════════════════════════════════════════

# (Principled-BSDF material presets removed — game renders flat unlit;
#  no set_material / reset_material anywhere.)

# ═══════════════════════════════════════════════════════════════════════════════
# TONE RAMP PRESETS
# ═══════════════════════════════════════════════════════════════════════════════

# Default 3-band cel (shadow / mid / lit) — matches engine default
ฟังก์ชัน toneRampCel() {
    tone_ramp_clear()
    tone_stop(0.25, 0.08)   # shadow
    tone_stop(0.60, 0.50)   # midtone
    tone_stop(1.00, 1.00)   # lit
    tone_smooth(0)           # hard snap
    tone_bezier_off()
    คืน 0
}

# Soft 3-band with linear lerp between stops
ฟังก์ชัน toneRampSoft() {
    tone_ramp_clear()
    tone_stop(0.20, 0.06)
    tone_stop(0.55, 0.48)
    tone_stop(1.00, 1.00)
    tone_smooth(1)           # gradient lerp
    tone_bezier_off()
    คืน 0
}

# S-curve: slow in shadow, fast in midtone, slow again in highlight
ฟังก์ชัน toneRampSCurve() {
    tone_ramp_clear()
    tone_stop(0.25, 0.08)
    tone_stop(0.60, 0.50)
    tone_stop(1.00, 1.00)
    tone_smooth(1)
    tone_bezier(0.1, 0.9)   # S-curve pre-distortion
    คืน 0
}

# Anime-style: deep shadow + punchy mid + bright highlight
ฟังก์ชัน toneRampAnime() {
    tone_ramp_clear()
    tone_stop(0.20, 0.04)   # very dark shadow
    tone_stop(0.45, 0.55)   # snappy midtone
    tone_stop(0.75, 0.90)   # early lit
    tone_stop(1.00, 1.00)
    tone_smooth(0)           # hard bands
    tone_bezier_off()
    คืน 0
}

# Reset to engine built-in default (identical to toneRampCel but via reset)
ฟังก์ชัน toneRampReset() {
    tone_ramp_reset()
    คืน 0
}

# ═══════════════════════════════════════════════════════════════════════════════
# OPTIMIZED HEALTH BAR (using quads)
# ═══════════════════════════════════════════════════════════════════════════════

ฟังก์ชัน drawHealthBarOptimized(x, y, z, current, max, width) {
    bind height = 0.6
    bind fillWidth = width * (current / max)

    # Background (dark)
    สีดินสอ(20, 20, 25)
    draw_quad_3d(
        x, y, z,
        x + width, y, z,
        x + width, y - height, z,
        x, y - height, z
    )

    # Health fill (gradient effect via material)
    ถ้า current > 0.0 {
        bind healthPercent = current / max
        bind r = floor(255.0 - (healthPercent * 150.0))
        bind g = floor(120.0 + (healthPercent * 135.0))
        bind b = 30

        # flat health-bar fill colour (no BSDF)
        สีดินสอ(r, g, b)
        draw_quad_3d(
            x, y, z,
            x + fillWidth, y, z,
            x + fillWidth, y - height, z,
            x, y - height, z
        )
    }

    คืน 0
}

# ═══════════════════════════════════════════════════════════════════════════════
# OPTIMIZED TILE/TERRAIN (using quads instead of triangle pairs)
# ═══════════════════════════════════════════════════════════════════════════════

ฟังก์ชัน drawTerrainTileQuad(x, z, y, size) {
    bind hs = size
    # Single quad instead of 2 triangles
    draw_quad_3d(
        x - hs, y, z - hs,
        x + hs, y, z - hs,
        x + hs, y, z + hs,
        x - hs, y, z + hs
    )
    คืน 0
}

# ═══════════════════════════════════════════════════════════════════════════════
# MATERIAL-ENHANCED MESH RENDERING
# ═══════════════════════════════════════════════════════════════════════════════

# Render character (flat colour — no BSDF)
ฟังก์ชัน renderCharacterWithMaterial(meshPath, x, y, z, yaw, skinR, skinG, skinB) {
    สีดินสอ(skinR, skinG, skinB)
    คืน 0
}

# Render weapon (flat colour — no BSDF)
ฟังก์ชัน renderWeaponWithMaterial(weaponType, x, y, z, yaw, metalR, metalG, metalB) {
    สีดินสอ(metalR, metalG, metalB)
    คืน 0
}

# ═══════════════════════════════════════════════════════════════════════════════
# PERFORMANCE HELPERS
# ═══════════════════════════════════════════════════════════════════════════════

# Draw multiple quads from coordinate list (batch optimization)
ฟังก์ชัน drawQuadBatch(coords, count) {
    # coords should be list of [x0,y0,z0, x1,y1,z1, ...]
    # Each quad = 12 floats (4 vertices × 3 coords)
    bind i = 0
    ขณะที่ i < count {
        bind idx = i * 12
        draw_quad_3d(
            coords[idx+0], coords[idx+1], coords[idx+2],
            coords[idx+3], coords[idx+4], coords[idx+5],
            coords[idx+6], coords[idx+7], coords[idx+8],
            coords[idx+9], coords[idx+10], coords[idx+11]
        )
        bind i = i + 1
    }
    คืน 0
}